Detect trashed and archived Deck entities, skip archived boards

Deck's Entity getters are magic (__call), so method_exists() never saw
getDeletedAt() or getArchived(): trashed cards were moved, trashed boards
were neither dropped from "my boards" nor detected by findStackIds(), and
every board counted as not archived. DeckIntegrationService now checks the
properties with property_exists() via isTrashed()/isArchived().

Workflows on archived boards stay enabled but are skipped by the runner
(isBoardArchived(), read through BoardMapper) until the board is
unarchived, and the settings list marks them. Archived boards are no
longer offered in the board dropdown at all; editing a workflow on one
clears board and stacks and says why.

.gitea/workflows/appstore.yml

@@ -0,0 +1,84 @@
+name: Publish to App Store
+
+# Manual only: pushes an already published v* release to apps.nextcloud.com.
+# It does not build anything - it signs the exact tarball build-main.yml
+# attached to the Gitea release, because the App Store downloads the file from
+# that URL and checks the signature against it. That release only exists if
+# the checks were green, so this workflow needs no `needs:` of its own.
+#
+# Secrets:
+#   APPSTORE_PRIVATE_KEY  workflow_deck_automation.key (PEM, the key the App
+#                         Store certificate was issued for)
+#   APPSTORE_TOKEN        API token from https://apps.nextcloud.com/account/token
+on:
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: 'Release-Tag, z. B. v35.2.3'
+        required: true
+        type: string
+
+jobs:
+  appstore:
+    runs-on: gitea-runner-server03
+    permissions:
+      contents: read
+    env:
+      TAG: ${{ inputs.tag }}
+      DOWNLOAD_URL: ${{ gitea.server_url }}/${{ gitea.repository }}/releases/download/${{ inputs.tag }}/workflow_deck_automation.tar.gz
+    steps:
+      - name: Check tag
+        run: |
+          # latest-main is rebuilt on every push, so its tarball (and signature)
+          # would not stay valid - only real version tags go to the store.
+          if ! printf '%s' "$TAG" | grep -Eq '^v[0-9]+\.[0-9]+\.[0-9]+$'; then
+            echo "::error::'$TAG' is not a version tag (vX.Y.Z)"
+            exit 1
+          fi
+
+      - name: Download release tarball
+        run: |
+          # Anonymous on purpose: the App Store fetches this URL without
+          # credentials, so a private or missing release has to fail here.
+          curl -fsSL "$DOWNLOAD_URL" -o workflow_deck_automation.tar.gz
+
+      - name: Check version in tarball
+        run: |
+          VERSION=$(tar -xzOf workflow_deck_automation.tar.gz workflow_deck_automation/appinfo/info.xml \
+            | sed -n 's:.*<version>\(.*\)</version>.*:\1:p')
+          if [ "v$VERSION" != "$TAG" ]; then
+            echo "::error::info.xml says version '$VERSION', tag is '$TAG'"
+            exit 1
+          fi
+
+      - name: Sign and upload
+        env:
+          PRIVATE_KEY: ${{ secrets.APPSTORE_PRIVATE_KEY }}
+          APPSTORE_TOKEN: ${{ secrets.APPSTORE_TOKEN }}
+        run: |
+          set -e
+          if [ -z "$PRIVATE_KEY" ] || [ -z "$APPSTORE_TOKEN" ]; then
+            echo "::error::APPSTORE_PRIVATE_KEY and APPSTORE_TOKEN must be set"
+            exit 1
+          fi
+
+          KEY_FILE=$(mktemp)
+          trap 'rm -f "$KEY_FILE"' EXIT
+          chmod 600 "$KEY_FILE"
+          printf '%s\n' "$PRIVATE_KEY" > "$KEY_FILE"
+
+          # -A keeps the base64 on one line, so it can go into the JSON as is.
+          SIGNATURE=$(openssl dgst -sha512 -sign "$KEY_FILE" workflow_deck_automation.tar.gz | openssl base64 -A)
+
+          STATUS=$(curl -sS -o response.json -w '%{http_code}' -X POST \
+            -H "Authorization: Token $APPSTORE_TOKEN" \
+            -H "Content-Type: application/json" \
+            -d "{\"download\":\"$DOWNLOAD_URL\",\"signature\":\"$SIGNATURE\",\"nightly\":false}" \
+            https://apps.nextcloud.com/api/v1/apps/releases)
+
+          cat response.json; echo
+          # 201 = new release, 200 = existing release replaced
+          case "$STATUS" in
+            200|201) echo "App Store accepted $TAG (HTTP $STATUS)" ;;
+            *) echo "::error::App Store answered HTTP $STATUS"; exit 1 ;;
+          esac

CLAUDE.md

@@ -1,187 +1,186 @@
 # CLAUDE.md
 
-This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+Leitfaden für Claude Code (claude.ai/code) in diesem Repository.
 
-## What this is
+## Worum es geht
 
-A Nextcloud app (`workflow_deck_automation`, namespace `WorkflowDeckAutomation`) targeting **Nextcloud Hub 26 Spring (server 34.x)**. It lets each user configure, from their personal settings, automation "workflows" that move overdue [Deck](https://github.com/nextcloud/deck) cards from one stack to another, with optional assigned-user/label filters and an email notification. A background `Job` evaluates all enabled workflows on every cron pass.
+Nextcloud-App `workflow_deck_automation` (Namespace `WorkflowDeckAutomation`) für **Nextcloud 35** (`main`, `min-version="35" max-version="35"`). Jeder Nutzer legt in seinen persönlichen Einstellungen „Workflows“ an, die [Deck](https://github.com/nextcloud/deck)-Karten von einem Stack in einen anderen verschieben, sobald ihr Fälligkeits- oder Startdatum erreicht ist (`trigger_date`, pro Workflow), optional mit Mail. Es gibt bewusst **keine Kartenfilter**: ein Workflow verschiebt *jede* Karte seines Quell-Stacks, deren Datum erreicht ist. Ein Hintergrund-`Job` wertet alle aktiven Workflows bei jedem Cron-Lauf aus.
 
-## Non-negotiable architectural constraint
+## Harte Vorgabe: keine HTTP/OCS-Aufrufe gegen Deck
 
-**No HTTP/OCS calls against Deck, anywhere.** Every read (boards, stacks, cards, labels, assigned users) and the card move itself must go through Deck's own internal PHP classes (`OCA\Deck\Service\CardService`, `StackService`, `BoardService`, `OCA\Deck\Db\CardMapper`, …), resolved in-process via `\OCP\Server::get()`. This was an explicit, repeated product requirement from the user — do not "fix" it by switching to `IClientService`/`curl` against `/ocs/...`, even though that would be the more conventional cross-app integration approach.
+Alle Lesezugriffe (Boards, Stacks, Karten) und das Verschieben laufen über Decks interne PHP-Klassen (`OCA\Deck\Service\*`, `OCA\Deck\Db\*`), in-process per `\OCP\Server::get()`. Das ist eine ausdrückliche, wiederholte Anforderung des Nutzers – nicht auf `IClientService`/`curl` gegen `/ocs/...` „umbauen“.
 
-All Deck access is funneled through `lib/Service/DeckIntegrationService.php` — it is the *only* class that references `OCA\Deck\*`. If you need new Deck data, extend that class rather than reaching into Deck internals from elsewhere. Every call in there is wrapped (`class_exists()` checks, `IAppManager::isEnabledForUser('deck', …)`, try/catch → `DeckUnavailableException`) because `OCA\Deck\*` is not a documented/stable public API — it has no `@since` markers and can change between Deck releases without notice.
+**Nur `lib/Service/DeckIntegrationService.php` referenziert `OCA\Deck\*`.** Neue Deck-Daten → diese Klasse erweitern. Jeder Aufruf dort ist abgesichert (`class_exists()`, `IAppManager::isEnabledForUser('deck', …)`, try/catch → `DeckUnavailableException`), weil `OCA\Deck\*` keine stabile, dokumentierte API ist (keine `@since`-Marker).
 
-## Per-user impersonation in the background job
+## Impersonation im Hintergrundjob – Decks eingefrorene `$userId`
 
-`RunWorkflowsJob` has no logged-in user by default and must evaluate workflows belonging to many different users within one PHP process. `lib/Service/WorkflowRunner.php` therefore groups workflows by owner and impersonates each owner in turn. **Impersonation here is two steps, and `IUserSession::setUser()` is the one that barely matters:**
+`WorkflowRunner` gruppiert Workflows nach Owner und impersoniert jeden nacheinander, in zwei Schritten (beide im `finally` via `clearImpersonation()` zurückgesetzt):
 
-1. `IUserSession::setUser()` — for the handful of Nextcloud services that do read the live session, plus `IRootFolder::getUserFolder()` for Deck helpers that expect an initialised user FS.
-2. `DeckIntegrationService::beginUserContext()` — pins **Deck itself** to that user. This is the load-bearing half.
+1. `IUserSession::setUser()` + `IRootFolder::getUserFolder()` – für die wenigen Dienste, die die Session lesen. Nebensächlich.
+2. `DeckIntegrationService::beginUserContext()` – **der tragende Teil.**
 
-Both are undone in a `finally` (`WorkflowRunner::clearImpersonation()`).
+**Deck liest für Berechtigungen nie die Session.** `PermissionService` (hinter jeder Prüfung, auch in `CardService::reorder()`), `CardService`, `BoardService` und `ActivityManager` halten `private ?string $userId` aus dem `userId`-Service des Deck-Containers – *shared*, also einmal pro Prozess aufgelöst. Im Cron ist das nie der impersonierte Nutzer, sondern `null` (wenn vorher ein Deck-Job lief) oder der erste Owner. `null` lässt jede Prüfung mit `NoPermissionException` scheitern.
 
-**Deck does not read the session for permissions. At all.** `PermissionService` — the class behind every permission check, including the ones inside `CardService::reorder()` — takes the current user as `private ?string $userId`, and so do `CardService`, `BoardService` and `ActivityManager`. That string comes from the app container's `userId` service, which is `ISession::get('user_id')` registered via `registerService()`, i.e. **shared**: Pimple resolves it once and caches it for the whole process, and `ServerContainer` caches Deck's app container just as long. Whoever was active when Deck's container first built `PermissionService` is who every later check is evaluated against.
+`beginUserContext()` überschreibt daher das private Feld per Reflection und `endUserContext()` stellt es wieder her. `PermissionService` ist Pflicht: klappt das Pinnen nicht, wirft die Methode und der Runner **überspringt den Nutzer komplett**. Die anderen drei sind best effort (nur Activity-Zuordnung/Unread-Zähler).
 
-In cron that is *never* the user being impersonated: `null` if any Deck-owned background job ran earlier in the same `cron.php` pass, otherwise the first workflow owner touched. `null` fails every check, so Deck answers `NoPermissionException` for perfectly intact boards. This produced a real bug — see the next section. `beginUserContext()` therefore swaps that private field directly (there is no API), records the old value, and `endUserContext()` puts it back. `PermissionService` is mandatory: if it can't be pinned, `beginUserContext()` throws and the runner **skips that user entirely** rather than acting under someone else's permissions. The other three are best-effort (they only affect activity attribution and unread counts).
+**Regel:** Bevor ein weiterer `OCA\Deck\*`-Dienst im Runner genutzt wird, prüfen, ob er eine eingefrorene `$userId` trägt – der Fehler ist still und nutzerübergreifend. Bevorzugt Mapper (QBMapper ohne Nutzerzustand) oder Methoden mit explizitem uid-Parameter verwenden. Deshalb wird `BoardService::getUserBoards()` nicht verwendet.
 
-Consequence for `getUserBoards()`: `listBoardsForCurrentUser()` stays **request-only** anyway — Deck may already have cached board lists behind that field, and the job has no use for a board *list*; it asks `findStackIds()` about one known board id. Before using any other `OCA\Deck\*` service from the runner, check whether it carries a frozen `$userId` — the failure mode is silent and user-crossing, not an error.
+Der Datumsvergleich `WorkflowRunner::hasPassed()`, `TriggerDate`, `LoopDetector` und die Empfängerregel `NotificationPolicy::shouldNotify()` sind bewusst `static` und seiteneffektfrei, also ohne Deck unit-testbar (`tests/Unit/Service/`). Das sind die einzigen getesteten Teile der App. Neue reine Logik in dieser Form halten.
 
-The filter logic (`WorkflowRunner::cardMatchesFilters()`, `::isOverdue()`, `::findDeadFilters()`) is deliberately `static` and side-effect-free so it's unit-testable without a real Deck installation — see `tests/Unit/Service/WorkflowRunnerFilterTest.php`. Keep new pure logic in that shape; it is the only part of this app that has tests at all.
+## Workflows werden deaktiviert, wenn Board/Stack verschwinden
 
-## Workflows are auto-disabled when their Deck targets vanish
+`WorkflowRunner::findBrokenTarget()` prüft vor jedem Lauf Board und Stacks; fehlt etwas, wird der Workflow abgeschaltet (`enabled = false`) und einmalig gemailt. Invarianten:
 
-`WorkflowRunner::findBrokenTarget()` checks board and stacks before every run and, if something is gone, switches the workflow off (`enabled = false`) and sends a one-off mail. Two invariants hold this together and must survive refactors:
+- **Nur positives Wissen deaktiviert.** `findStackIds()` liefert `null` nur bei „Board-Zeile weg“ (`DoesNotExistException`, Decks `NotFoundException`), „Board im Papierkorb“ (`deleted_at > 0`) oder „uid hat keine Leserechte“ – alles andere *wirft*, und der Runner überspringt den Workflow. Degradiert die Methode auf `[]`/`null`, deaktiviert ein Deck-Ausfall alle Workflows der Instanz und mailt alle Nutzer an.
+- **`findStackIds()` fragt nie einen Deck-Dienst, *wer* fragt.** Sie bekommt die uid als Argument und nutzt nur `BoardMapper`/`StackMapper` plus `PermissionService::getPermissions($boardId, $userId)` mit expliziter uid. Nicht zu `StackService::findAll($boardId)` „vereinfachen“ – genau das prüfte gegen die eingefrorene `null`-uid, warf `NoPermissionException`, wurde als „Board weg“ gelesen und verschickte Deaktivierungsmails für intakte Boards.
+- **`NoPermissionException` beweist nichts** und steht deshalb bewusst nicht in `isMissing()`.
+- **Die Deaktivierungsmail ignoriert `notifyMode` und `notifyChannel`** (die betreffen verschobene Karten) und geht immer nur an den Owner, zusätzlich als Nextcloud-Benachrichtigung, falls die Notifications-App aktiv ist. Sie bleibt einmalig, weil `findAllEnabled()` deaktivierte Workflows nicht mehr lädt.
 
-- **Only positive knowledge disables.** `DeckIntegrationService::findStackIds()` returns `null` only for "board row gone" (`DoesNotExistException`, Deck's `NotFoundException`), "board in the trash" (`deleted_at > 0`), or "this uid has no read permission" — and *throws* for everything else. The runner skips the workflow on a throw. If you make that method degrade to `[]`/`null` on generic errors, a Deck outage will disable every workflow on the instance and mail every user about it.
-- **`findStackIds()` must never ask a Deck service to figure out *who* is asking.** It takes the uid as an argument and is assembled from pieces that cannot answer for the wrong user: `BoardMapper`/`StackMapper` are plain QBMappers with no user state, and `PermissionService::getPermissions($boardId, $userId)` is handed the uid explicitly instead of falling back to the frozen field. Do not "simplify" it back to a single `StackService::findAll($boardId)` — that is precisely what broke. `StackService::findAll()` runs `checkPermission()` with no uid, which falls through to the construction-time `$userId`; with that frozen to `null` in cron, Deck threw `NoPermissionException` for an untouched board, the old code read that as "board is gone", and users got "your workflow was deactivated" mails for boards sitting right in front of them. This layer stays correct even if `beginUserContext()` silently degrades.
-- **`NoPermissionException` is not evidence of anything.** It is deliberately *not* in `isMissing()`. Deck raises it for every failed check regardless of cause.
-- **The mail ignores the `notifyEmail` flag** — that flag is about moved cards; this is a notice that the user's configuration stopped working. It stays a one-off simply because a disabled workflow is not picked up by `findAllEnabled()` again.
+Archivierte Boards lösen das nicht aus (sie bleiben lesbar). Ihre Workflows bleiben aktiv, werden aber übersprungen: `runWorkflow()` fragt nach `findBrokenTarget()` `DeckIntegrationService::isBoardArchived()` (`BoardMapper`, `false` bei fehlendem Board, sonst wirft es). Im Dropdown erscheinen archivierte Boards nie, auch nicht beim Bearbeiten (dann leert das Formular Board und Stapel und zeigt einen Hinweis). In der Übersicht werden sie markiert.
 
-Archived boards deliberately do *not* trigger this (they stay readable, so `findStackIds()` succeeds), even though they're filtered out of the settings dropdowns.
+## Ein Workflow gehört dem Board-Owner, nicht seinem Ersteller
 
-## Dead filters are surfaced, never disabled
+Wird ein Board in Deck übertragen, wandern seine Workflows mit.
 
-`findBrokenTarget()` covers the board and the two stacks — **not** `filter_user_ids` / `filter_label_ids`. Those are plain id lists compared with `array_intersect()` in `cardMatchesFilters()`, so an entry that no longer exists simply stops matching. With three labels of which one was deleted that is exactly right, and disabling would be wrong.
+- **„Meine Boards“** = `listOwnedBoards($uid)` → `BoardMapper::findAllByOwner($uid)` (keine geteilten Boards, keine eingefrorene uid). Diese Mapper-Methode filtert weder Papierkorb noch Archiv: Papierkorb-Boards werden verworfen, archivierte mit `archived: true` behalten (Workflows sichtbar, aber nicht im Dropdown, von `validate()` abgelehnt, vom Runner übersprungen). Wirft statt `[]` zurückzugeben – `[]` würde alle Workflows des Nutzers verstecken.
+- **Auflisten/Bearbeiten/Löschen** nur über `board_id IN (listOwnedBoards)` (`WorkflowMapper::findAllForBoards()`, `WorkflowController::findOwnWorkflow()`). `user_id` spielt keine Rolle – keine `user_id`-Abfragen im Controller wieder einführen.
+- **Anlegen/Speichern** validiert gegen dieselbe Liste und setzt `user_id` auf den aktuellen Nutzer.
+- **Runner:** `followBoardOwner()` → `findBoardOwner()` (`BoardMapper::find()`) schreibt einen abweichenden Owner in `user_id` zurück. Lauf und Mails gehen also an den aktuellen Owner. Ein verschwundenes Board behält den letzten Owner, damit `findBrokenTarget()` ihn anmailen kann.
 
-The pathological case is a filter whose entries are *all* gone: the workflow keeps running, updates `last_run`, and matches nothing — forever, with no mail, no log line and a healthy-looking row. It happens on deleted labels and just as easily on a user losing board access, because Deck's `BoardService::deleteAcl()` calls `assignedUsersMapper->deleteByParticipantOnBoard()` and wipes that user's card assignments.
+`user_id` heißt also nur „als wer läuft der Job / wer bekommt Mail“.
 
-Two low-stakes signals, no state and no migration:
+## Mails über verschobene Karten folgen Decks Benachrichtigungseinstellung
 
-- `WorkflowRunner::warnAboutDeadFilters()` logs a warning on every run.
-- `workflowIssues` in `src/PersonalSettings.vue` marks the row red.
+`notify_mode` (`NotificationPolicy::MODES`) ersetzt seit `Version1002…`/`Version1003…` das frühere `notify_email` (`true` → `owner`):
 
-Both obey the same rule as the disable path: **only positive knowledge**. `DeckIntegrationService::findFilterOptions()` therefore *throws* instead of degrading to `[]` — unlike its siblings `listLabels()`/`listParticipants()`, which are wrapped in `call(…, [])` for the dropdowns, where an empty list is harmless. On the JS side the per-board caches store `null` for a failed request, and `isDeadFilter()` returns false for `null`; storing `[]` there would report every stack and filter of the board as deleted the moment one request fails. Don't collapse those two states back together.
+- `off`: keine Mail. `owner`: nur der Board-Owner, ohne Rücksicht auf seine Deck-Einstellung (altes Verhalten).
+- `board`: alle Board-Berechtigten, gefiltert nach deren Deck-Nutzereinstellung `deck` / `board:<id>:notify-due` (`off`/`assigned`/`all`, Default `assigned`). `NotificationPolicy::shouldNotify()` bildet Decks Regel aus `NotificationHelper::sendCardDuedate()` nach und ist reine, getestete Logik. Dazu gehört: Der Owner eines ungeteilten Boards wird außer bei `off` immer benachrichtigt.
+- `DeckIntegrationService::findNotificationRecipients()` nutzt nur uid-explizite Bausteine: `PermissionService::findUsers($boardId, true)` (Owner + ACL, löst Gruppen/Circles auf, `true` umgeht den Prozess-Cache), `AssignmentMapper::isUserAssigned()` (auch Gruppen-/Circle-Zuweisungen) und `IConfig`. `FederatedUser` wird übersprungen. Bei jedem Fehler wirft die Methode, und der Runner verschickt dann **keine** Mail, statt an eine falsch aufgelöste Empfängerliste zu schicken.
+- Der Runner sammelt verschobene Karten in `$pendingNotices` und verschickt **nach** der Nutzer-Schleife (also ohne Impersonation) je nach `notify_channel` des Workflows eine Sammelmail pro Empfänger und Lauf und/oder eine Nextcloud-Benachrichtigung pro Karte.
 
-Deliberately no mail and no `enabled = false`: one board edit can revive the filter, and there is no "already warned" column to keep a mail one-off with (unlike the disable case, which is one-off for free because a disabled workflow is never picked up again).
+## Nextcloud-Benachrichtigungen sind ein zweiter Kanal, keine zweite Empfängerregel
 
-## The job has no interval — one run per cron pass
+`notify_channel` (`NotificationPolicy::CHANNELS`: `mail`/`notification`/`both`, Default und Migrationswert `mail`, `Version1004…`) sagt nur, *wie* die über `notify_mode` ermittelten Empfänger informiert werden. `NotificationPolicy::sendsMail()`/`sendsNotification()` sind reine, getestete Logik. Unbekannte Werte zählen als `mail`.
 
-`RunWorkflowsJob` extends `OCP\BackgroundJob\Job`, **not** `TimedJob`, so it runs every time cron picks it up. There is no interval and no knob: the cadence *is* the instance's cron cadence. Don't reintroduce one — an earlier version read `workflow_deck_automation.interval` from `config.php` (default 300, 60s floor), and that config key is gone as of v0.2.0. `TimedJob` with `setInterval(0)` would behave nearly identically but keeps an interval concept nothing uses.
+- **`NotificationPusher`** legt über `OCP\Notification\IManager` eine Benachrichtigung **pro Karte** an (Objekt `card`/Karten-ID, Subject `card_moved`) und räumt vorher per `markProcessed()` eine ältere zur selben Karte weg. Gespeichert werden nur Rohwerte (Titel, IDs), keine Texte.
+- **`Notification\Notifier`** (per `registerNotifierService()` in `Application::register()`) baut daraus deutsche Texte und ignoriert `$languageCode`. Titel sind Nutzereingaben und gehen nur als Rich-Objekte (`deck-card`, `deck-board`, `highlight`) in den Text, nie ins Template, sonst würde ein `{…}` im Titel als Platzhalter gelesen. Der Notifier fragt **Deck nicht**: Er läuft beim Abruf durch irgendeinen Nutzer, und Deck-Dienste hätten dort die eingefrorene uid.
+- **Ohne Notifications-App passiert nichts:** `NotificationPusher::isAvailableFor()` prüft `IAppManager::isEnabledForUser('notifications', $user)` pro Empfänger und kehrt stumm zurück. Kein Fallback auf Mail, kein Fehler-Log. Die Einstellungsseite bekommt denselben Check als `data-notifications-available` und zeigt dann einen Hinweis.
+- Push aufs Handy/Desktop ist Sache der Notifications-App (Push-Proxy bzw. `notify_push`), nicht dieser App.
 
-**Time sensitivity is what actually decides whether the job runs at all.** `OC\Core\Service\CronService::runCli()` reads `maintenance_window_start` (default `100`, i.e. unset) and, whenever the current UTC hour is outside `[start, start+4]`, calls `jobList->getNext($onlyTimeSensitive = true)` — time-insensitive jobs are then skipped for the other 20 hours of the day. This app shipped `TIME_INSENSITIVE` once: on an instance with a maintenance window configured (Nextcloud's admin overview nags admins into setting one) the job simply never ran, showing `last_run = 1970-01-01` in `occ background-job:list` indefinitely. Note this gate only exists in `runCli()`, so it doesn't apply to ajax/webcron mode, and passing job classes explicitly (`occ background-job:worker '<class>'`) bypasses it — which is exactly why manual testing can look fine while cron does nothing.
+## Nur Deutsch, keine Übersetzungen
 
-Being a plain `Job` makes that unreachable rather than merely declared. `getNext()` filters on the `time_sensitive` *column* of `oc_jobs`; `JobList::add()` doesn't write the column at all (it takes the `TIME_SENSITIVE` default), and the only place that ever lowers it is a one-way ratchet in `JobList::setLastRun()`:
+Die App wird nur intern genutzt und spricht ausschließlich Deutsch. Oberfläche, Controller-Fehlermeldungen (erscheinen im Formular), Sektionsname, Mails und Nextcloud-Benachrichtigungen sind direkt auf Deutsch geschrieben. Es gibt kein `IL10N` und keinen `l10n/`-Ordner. Nextclouds eigene Mail-Fußzeile wird per `addFooter('', 'de')` ebenfalls deutsch, sonst würde sie im Cron der Instanz-Standardsprache folgen. Log-Meldungen bleiben englisch. Neue nutzersichtbare Texte auf Deutsch schreiben, mit „du“ wie im Rest der App.
 
-```php
-if ($job instanceof TimedJob && !$job->isTimeSensitive()) {
-    $query->set('time_sensitive', $query->createNamedParameter(IJob::TIME_INSENSITIVE));
-}
-```
+## Fälligkeits- oder Startdatum löst das Verschieben aus
 
-There is no `else`, and a non-`TimedJob` never enters it. Note `setTimeSensitivity()`/`isTimeSensitive()` live on `TimedJob`, not on `Job` — so there is nothing to declare here, and nothing that can go wrong.
+`trigger_date` (`TriggerDate::ALL`: `due`/`start`, Default und Migrationswert `due`, `Version1005…`) wählt pro Workflow, welches Kartendatum der Runner mit „jetzt“ vergleicht. Unbekannte Werte zählen als `due`. Karten ohne das gewählte Datum bleiben liegen.
 
-**Rows written by an older version keep their stamp.** Once stamped `TIME_INSENSITIVE` it stays that way: re-registering an existing job (app update, `app:enable`) takes `add()`'s update branch, which leaves the column alone. An instance that ran the pre-v0.1.0-fix build still needs its row fixed once:
+- **`startdate` gibt es erst seit Deck 1.18.** `Card`-Getter sind magisch (`Entity::__call`), `method_exists()` sieht sie nicht und `getStartdate()` würde erst beim Aufruf werfen. Daher `DeckIntegrationService::supportsStartdate()` (`property_exists`). Der Runner liest `getStartdate()` nur bei `start` und überspringt solche Workflows ohne Deaktivierung, wenn Deck das Feld nicht kennt. Der Controller lehnt `start` dann ab.
+- **Texte:** `TriggerDate::describeReason()` liefert den Satzteil („ist überfällig“ / „hat ihr Startdatum erreicht“) für Mail und Notifier. `NotificationPusher` speichert `triggerDate` in den Subject-Parametern. Ältere Benachrichtigungen ohne den Schlüssel gelten als `due`.
+- **Empfänger:** Auch Startdatums-Workflows nutzen bei `notify_mode = board` Decks `notify-due`-Einstellung. Deck hat keine eigene für das Startdatum.
+
+## Keine Schleifen, kein Quelle = Ziel
+
+Jeder aktive Workflow ist eine Kante „Quell-Stack → Ziel-Stack“. `LoopDetector` (rein, getestet) findet Kreise. „Quelle = Ziel“ ist ein Kreis der Länge 1. Das Auslöse-Datum wird bewusst ignoriert: Bei S1→S2 per Start und S2→S1 per Fälligkeit pendelt jede Karte, bei der beide Daten erreicht sind. Ohne Prüfung würde der Runner sie sogar im selben Lauf hin- und herschieben (jeder Workflow liest seinen Quell-Stack neu), mit einer Benachrichtigung pro Bewegung. Ketten sind erlaubt.
+
+- **Controller:** `validate()` → `assertNoLoop()` lehnt einen *aktiven* Workflow ab, dessen Ziel über die anderen aktiven Workflows des Boards zu seiner Quelle zurückführt, und nennt sie. Deaktivierte Workflows zählen nicht. Beim Aktivieren läuft dieselbe Prüfung, weil auch das über `update()` geht.
+- **Runner und Liste:** Altbestand kann trotzdem Kreise bilden. `run()` überspringt alle Workflows auf einem Kreis (nur Log, keine Deaktivierung, keine Mail), und `index()` liefert `loop: true`, das die Oberfläche rot markiert.
+- Stack-IDs sind in Deck boardübergreifend eindeutig, deshalb darf der Runner alle Workflows der Instanz in einen Graphen werfen.
+
+## Fälligkeit wird als UTC-Zeitpunkt verglichen
+
+Decks `duedate` und `startdate` sind `DATETIME`-Spalten ohne Zeitzone mit UTC-Uhrzeit (Frontend sendet `toISOString()`). `Entity` baut daraus `new \DateTime($string)` in PHPs Standardzone, die Nextcloud auf UTC setzt. `WorkflowRunner::asStoredUtc()` legt die Uhrzeit trotzdem ausdrücklich auf UTC fest, damit das Ergebnis nicht von dieser Standardzone abhängt. Decks eigene Pfade `Card::getDaysUntilDue()` (tagesgenau) und `CardMapper::findOverdue()` (vergleicht mit dem `NOW()` der Datenbank, also Ortszeit) sind dafür ungeeignet und werden nicht verwendet.
+
+## Kartenfilter wurden entfernt
+
+Die früheren Filter (`filter_user_ids`/`filter_label_ids`) wurden auf Wunsch entfernt. `Version1001Date20260930120000` löscht die Spalten, und gefilterte Workflows laufen seitdem *ungefiltert* weiter (bewusste Entscheidung). Die Spalten müssen gelöscht bleiben: `Entity::fromRow()` ruft pro Spalte einen Setter auf, den `Workflow` nicht mehr hat. Mit entfernt wurden: Labels-/Participants-Endpunkte, `listLabels()`/`listParticipants()`/`findFilterOptions()` und `CardService::enrichCards()` in `getActiveCardsInStack()` (lief über `BoardService::find()` mit eingefrorener uid). Die Karten dort sind also **nicht angereichert** (keine `assignedUsers`/Labels).
+
+## Der Job hat kein Intervall
+
+`RunWorkflowsJob` erweitert `OCP\BackgroundJob\Job`, **nicht** `TimedJob`: ein Lauf pro Cron-Durchgang, kein Intervall, keine Konfiguration (der frühere `config.php`-Schlüssel `workflow_deck_automation.interval` ist seit v0.2.0 weg). Nicht wieder einführen.
+
+**Zeitkritikalität entscheidet, ob der Job überhaupt läuft.** `CronService::runCli()` holt außerhalb des Wartungsfensters (`maintenance_window_start` … +4 h UTC) nur zeitkritische Jobs (`getNext($onlyTimeSensitive = true)`). Eine frühere Version war `TIME_INSENSITIVE` und lief auf Instanzen mit Wartungsfenster nie (`last_run = 1970-01-01`). Manuelle Tests (`background-job:worker '<Klasse>'`, Ajax/Webcron) umgehen dieses Gate, deshalb wirkt dort alles normal.
+
+Als einfacher `Job` ist das ausgeschlossen: `JobList::add()` schreibt die Spalte `time_sensitive` nicht (Default `TIME_SENSITIVE`), und nur `JobList::setLastRun()` senkt sie – ausschließlich für `TimedJob && !isTimeSensitive()`, ohne Rückweg. Alte, einmal als insensitive gestempelte Zeilen bleiben es (auch nach App-Update). Einmalig reparieren:
 
 ```sql
 UPDATE oc_jobs SET time_sensitive = 0
  WHERE class = 'OCA\\WorkflowDeckAutomation\\BackgroundJob\\RunWorkflowsJob';
 ```
 
-or, without DB access, `occ background-job:delete <id>` followed by `occ app:disable workflow_deck_automation && occ app:enable workflow_deck_automation` to get a freshly inserted row. Fresh installs are unaffected.
+oder `occ background-job:delete <id>`, dann `occ app:disable workflow_deck_automation && occ app:enable workflow_deck_automation`.
 
-To debug this job on a server: `occ background-job:list --class '<class>'` for its id and last run, then `occ background-job:execute <id> --force-execute` to run it right now without waiting for cron. `occ background-job:worker` takes **job classes**, not an app id.
+Debuggen: `occ background-job:list --class '<Klasse>'` (ID, letzter Lauf), dann `occ background-job:execute <id> --force-execute`. `background-job:worker` erwartet **Job-Klassen**, keine App-ID.
 
-## Registration is declarative, not Bootstrap-based
+## Registrierung deklarativ statt über Bootstrap
 
-Background jobs and classic personal settings are registered in `appinfo/info.xml` (`<background-jobs>`, `<settings><personal>/<personal-section>`), **not** via `IRegistrationContext` in `lib/AppInfo/Application.php` — that interface has no `registerBackgroundJob()`/`registerSettings()` methods on NC 34. `Application.php` is intentionally near-empty.
+Hintergrundjob und persönliche Einstellungen stehen in `appinfo/info.xml` (`<background-jobs>`, `<settings><personal>/<personal-section>`). `IRegistrationContext` hat dafür keine Methoden. `lib/AppInfo/Application.php` ist absichtlich fast leer und registriert nur den `Notifier` (dafür gibt es keinen `info.xml`-Eintrag).
 
-## Commands
+## Architektur
 
-**PHP and npm are not available in the local dev sandbox this repo is normally edited from.** Do not try to run `composer`, `php`, or `npm` locally to verify changes — they will fail with "command not found". Verification happens by pushing to `main` (or opening a PR) and checking the Gitea Actions run; the self-hosted runner tag is `gitea-runner-server03` (see `.gitea/workflows/*.yml`, all pinned to that `runs-on:` label).
+- **UI:** `src/PersonalSettings.vue` (Vue 3), gemountet aus `templates/settings/personal.php` (Sektion: `lib/Settings/PersonalSection.php` + `Personal.php`) → `src/api.js` → `lib/Controller/WorkflowController.php` (`OCSController`, Routen in `appinfo/routes.php`, `/ocs/v2.php/apps/workflow_deck_automation/api/v1/...`).
+- **Speicher:** `lib/Db/Workflow.php` / `WorkflowMapper.php`, Tabelle `wfda_workflows` (Migrationen in `lib/Migration/`).
+- **Automation:** `RunWorkflowsJob` → `WorkflowRunner` → `DeckIntegrationService` (alle Deck-Aufrufe), `NotificationMailer` (`IMailer`, an die Account-Adressen der Empfänger, nie an eine eingegebene Adresse) und `NotificationPusher` (`IManager`, Texte aus `lib/Notification/Notifier.php`).
+- Controller (Dropdowns) und Runner (Karten lesen/verschieben) nutzen denselben `DeckIntegrationService`.
+- **Doku:** `README.md` richtet sich an Anwender und Admins und enthält keine Klassennamen. `DEVELOPMENT.md` ist für Entwickler (Aufbau, Datenmodell, Tests, CI, Release, Fehlersuche). Neue Nutzer-Funktionen in der README beschreiben, technische Details in `DEVELOPMENT.md`. Beide Dateien sind per `Makefile` vom Paket ausgeschlossen.
 
-Commands as they'd run in CI/on a machine that has the tools:
+## Befehle und Verifikation
+
+**Lokal gibt es kein PHP und kein npm** (Windows, siehe `CLAUDE.local.md`) – `composer`/`php`/`npm` nicht lokal ausführen. Verifiziert wird über Push/PR und den Gitea-Actions-Lauf (Runner `gitea-runner-server03`).
 
 ```bash
 composer install
-composer run lint       # php -l over lib/ and tests/
-composer run cs:check   # nextcloud/coding-standard (php-cs-fixer); composer run cs:fix to auto-fix
-composer run test:unit  # PHPUnit — pure logic only, no live Deck/Nextcloud instance needed
+composer run lint        # php -l über lib/ und tests/
+composer run cs:check    # nextcloud/coding-standard; cs:fix korrigiert
+composer run test:unit   # PHPUnit, nur reine Logik
+vendor/bin/phpunit --filter <testName> tests/Unit/Service/WorkflowRunnerTest.php
 
-npm install              # no package-lock.json is committed (gitignored) — use install, not `npm ci`
-npm run build             # production build
-npm run watch              # rebuild on change during development
+npm install              # nicht `npm ci`: Lockfiles sind absichtlich nicht committet
+npm run build            # bzw. npm run watch
 ```
 
-To run a single PHPUnit test: `vendor/bin/phpunit --filter testUserFilterIsOrAgainstAssignedUsers tests/Unit/Service/WorkflowRunnerFilterTest.php`.
+`composer.lock` und `package-lock.json` stehen in `.gitignore` → CI muss `composer install`/`npm install` verwenden (`npm ci` hat den Build schon einmal gebrochen). Die Deck-Integration lässt sich nur auf einer echten Nextcloud+Deck-Instanz testen.
 
-There is no meaningful way to test the Deck integration itself outside a real Nextcloud+Deck instance (`php occ background-job:worker 'OCA\WorkflowDeckAutomation\BackgroundJob\RunWorkflowsJob'` — the argument is a job *class*, not an app id) — the unit tests intentionally stop at the pure filter logic.
+## Release und CI
 
-### Release process
+**Versionsschema:** `<Nextcloud-Major>.<minor>.<patch>`. Die erste Zahl entspricht `min-/max-version` in `info.xml` und ändert sich nur mit der unterstützten NC-Major (dann `minor.patch` = `0.0`). `0.x`-Versionen stammen aus der Zeit davor. Die 34er-Linie existiert nur noch als Tags (`v34.*`). Kein Branch.
 
-**Versioning scheme (from 34.0.0 on): `<nextcloud-major>.<minor>.<patch>`.** The leading number tracks the minimum/maximum Nextcloud major version declared in `appinfo/info.xml`'s `<dependencies><nextcloud .../>` (currently `min-version="34" max-version="34"`), not this app's own feature history - so it only changes when the supported Nextcloud major changes (e.g. dropping/adding NC 34 support bumps to `35.0.0`), and resets `minor`/`patch` to `0.0` at that point. Ordinary fixes/features within the same supported NC major bump `minor`/`patch` as usual (semver-ish, without a leading `0.`). Versions before `34.0.0` (`0.1.x`/`0.2.x`) predate this scheme.
+1. `<version>` in `appinfo/info.xml` und `version` in `package.json` synchron erhöhen.
+2. Committen, nach `main` pushen, `build-main.yml` muss grün sein.
+3. `git tag vX.Y.Z && git push origin vX.Y.Z` → Checks, Frontend-Build, `make appstore`, Release mit `workflow_deck_automation.tar.gz`.
 
-1. Bump `<version>` in `appinfo/info.xml` and `version` in `package.json` (keep them in sync).
-2. Commit, push to `main`, confirm the run of `.gitea/workflows/build-main.yml` is green.
-3. `git tag vX.Y.Z && git push origin vX.Y.Z` — this triggers the tag branch of the same workflow, which re-runs the checks, builds the frontend, runs `make appstore`, and attaches `workflow_deck_automation.tar.gz` as the asset on a normal (non-pre-) release for that tag.
+Ist ein Tag-Build fehlgeschlagen und **nie ein Artefakt entstanden**, den Tag auf den Fix verschieben statt die Version zu erhöhen (`git tag -d vX.Y.Z && git tag -a vX.Y.Z -m "..." && git push origin :refs/tags/vX.Y.Z && git push origin vX.Y.Z`). Der Job löscht ein vorhandenes Release vorher. Nach einem veröffentlichten Artefakt den Tag nicht mehr verschieben.
 
-**If the tagged build fails and no artifact was ever produced**, fix the issue on `main` and *move* the existing tag to the fixed commit instead of bumping to a new version number (`git tag -d vX.Y.Z && git tag -a vX.Y.Z -m "..." && git push origin :refs/tags/vX.Y.Z && git push origin vX.Y.Z`) — this is how `v0.1.0` was handled through several build fixes before it first built successfully. The job deletes any pre-existing *release* for the tag before creating the new one, so a moved tag republishes cleanly instead of failing on a duplicate asset name. Once a version has actually produced a published artifact, don't move its tag anymore; bump normally instead.
+**`.gitea/workflows/build-main.yml` ist der einzige Build-/Release-Workflow** (Checks `php-lint` mit PHP 8.4 und 8.5, `xml-lint`, `unit-tests` + Job `package`), damit `needs:` das Release an grüne Checks koppelt. Nicht wieder aufteilen.
 
-**No `actions/upload-artifact` anywhere — and don't reintroduce it.** This self-hosted Gitea instance identifies as GHES to the official `actions/*` JS actions, which refuse to run `@actions/artifact` v2.0.0+ (used internally by `upload-artifact@v4` and later) against GHES: `GHESNotSupportedError`, which pinned us to `@v3` for a while. Publishing through the Gitea release REST API with `curl` sidesteps that version-specific backend API entirely, so the build workflow uses that instead. `actions/checkout` and `actions/setup-node` were never affected — only the artifact upload/download actions are, because they're the ones talking to a versioned backend rather than just running local commands — and can stay on their latest majors.
+**`.gitea/workflows/appstore.yml` ist nur manuell (`workflow_dispatch`) und soll so bleiben.** Er baut nicht selbst, sondern signiert den Tarball eines vorhandenen `v*`-Release und meldet dessen Gitea-Download-URL beim App Store an (Secrets `APPSTORE_PRIVATE_KEY`, `APPSTORE_TOKEN`). Signiert wird genau die Datei hinter der URL. Nach dem Store-Upload darf der Tag also nicht mehr verschoben werden, sonst passt die Signatur nicht mehr. `latest-main` wird abgelehnt. Kein `appinfo/signature.json` (Code-Signing): Das braucht der Store nicht, und Nextcloud prüft es bei Nicht-Core-Apps nur, wenn die Datei existiert.
 
-### One workflow for everything
+- `package` baut *und* veröffentlicht in einem Job und braucht nur Node (`make appstore` ist reines `mkdir`/`tar`/`rm`).
+- Bei `pull_request` wird `Publish release` übersprungen (`if: gitea.event_name == 'push'`) und der Job ist nur ein Build-Check.
+- Push auf `main` → Pre-Release `latest-main`, Release *und* Tag werden jedes Mal neu erzeugt (Download-Link zeigt immer den neuesten Build). `v*`-Tag → normales Release. Dabei wird **nie der Tag** gelöscht (Flag `RECREATE_TAG`).
+- **Kein `actions/upload-artifact`:** Gitea gibt sich als GHES aus, `@actions/artifact` ≥ 2 verweigert dann (`GHESNotSupportedError`). Veröffentlicht wird per `curl` gegen die Gitea-Release-API. `checkout`/`setup-node` sind nicht betroffen.
+- **Kein PAT nötig:** Auth über das automatische `secrets.GITEA_TOKEN` mit `permissions: contents: write`. Bei 403: prüfen, ob die Token-Berechtigung des Repos/der Org auf *Restricted* steht (deckelt `permissions:`). Das ist eine Einstellung, kein Workflow-Bug.
 
-`.gitea/workflows/build-main.yml` is the *only* workflow: it carries the checks (`php-lint` across 8.2/8.3/8.4, `xml-lint`, `unit-tests`) and the `package` job that builds and publishes. They used to be four separate workflow files, which meant they all triggered independently on the same push and a `latest-main` release was published even when PHPUnit was red. `needs:` only works between jobs of the same workflow (and Gitea's `workflow_run` can depend on one workflow at a time), so gating the release on the checks required merging them into this file. Don't split them back out.
+## Frontend-Build-Fallen (alle erst in CI aufgefallen)
 
-Consequences of that shape, all intentional:
+- **`vite` muss zum Peer von `@nextcloud/vite-config` passen** (aktuell `vite@^7.3.6`), sonst `ERESOLVE`. Beim Update von `vite-config` dessen `peerDependencies.vite` prüfen.
+- **`"type": "module"` in `package.json`**, sonst scheitert `vite.config.js` am ESM-only-Paket.
+- **`tsconfig.json` und `typescript` als devDependency sind Pflicht**, obwohl es kein TypeScript gibt: `@nextcloud/vite-config` importiert über sein Barrel `vite-plugin-dts`, das `typescript` als Peer braucht. Ohne das Paket crasht es beim Laden (`Cannot read properties of undefined (reading 'useCaseSensitiveFileNames')`). `typescript` nahe an der Version von `vite-config` halten (aktuell `^5.9.3`).
+- **`createAppConfig` stellt die App-ID vor jeden Entry-Namen:** `personal-settings` → `js/workflow_deck_automation-personal-settings.mjs`. `Util::addScript()`/`addStyle()` in `lib/Settings/Personal.php` brauchen diesen vollen Namen (`Application::APP_ID . '-personal-settings'`). Falsch → **leere Einstellungsseite**, nur `Could not find resource …` im Log. Umbenennungen in `vite.config.js` auch dort nachziehen.
+- Die eigentliche CSS steckt in einem gehashten `*.chunk.css`. Die Entry-CSS ist ein ~100-Byte-Stub (`createEmptyCSSEntryPoints`). Das ist korrekt, also Code-Splitting nicht abschalten.
 
-- **`package` builds *and* publishes in one job.** Handing the tarball to a separate publish job would need `actions/upload-artifact` (unusable here, see above) or `actions/cache` — a second Gitea backend API in the critical path for no gain.
-- **The workflow also runs on `pull_request`**, where the `Publish release` step is skipped via `if: gitea.event_name == 'push'` and the job degrades into a frontend-build check. That matters: `npm run build` used to run only on `main`, so no PR ever exercised it.
-- **Tags now get linted and tested too.** Previously the check workflows triggered only on `main` pushes and PRs, so a `v*` tag published completely unverified.
+## `@nextcloud/vue` 9 (Vue 3) – v8-Idiome scheitern still
 
-It runs on pushes to `main` **and** on `v*` tags, and the publish step branches on `gitea.ref`:
+- **Kein `.sync`:** `NcTextField`/`NcCheckboxRadioSwitch` → `v-model`. `:value.sync` lässt den Wert auf dem Startwert stehen.
+- **`NcSelect`: `label` ist der Anzeige-Schlüssel der Optionen** (vue-select), die Beschriftung ist `input-label`. `label="Board"` rendert überall `undefined`.
+- **`NcButton`: `variant` = Stil, `type` = nativer Button-Typ**, `native-type` gibt es nicht mehr. Ein übrig gebliebenes `type="primary"` wird zu `submit`, und Abbrechen schickt das Formular ab.
+- `NcSelect`s `reduce` erreicht vue-select nur per Attribut-Fallthrough (funktioniert, ist aber undokumentiert).
+- `NcNoteCard` nutzt weiterhin `type` (`success|info|warning|error`).
 
-- **`main`** → rolling pre-release tagged `latest-main`; both the release *and* the tag are deleted and recreated each run, so the download URL for `workflow_deck_automation.tar.gz` always serves the newest `main` build.
-- **`v*`** → normal release on the tag that was just pushed. Only a stale release is deleted here — **never the tag**, since deleting it would destroy the ref that triggered the run. That's what the `RECREATE_TAG` flag guards.
+## Deck-Interna, die man kennen muss
 
-The `latest-main` half exists so a build can be grabbed and copied onto the server (`nextcloud.gnilebein.de`) without cutting a version tag first — it produced `v0.1.0`-shaped raw-repo confusion once already when the app directory was populated by copying the git working tree instead of a built package; this gives a one-click alternative to that mistake.
-
-Note that `make appstore` is pure `mkdir`/`tar`/`rm` — no `composer`, no `php`. The `package` job therefore needs Node only; a `setup-php` step *there* would be dead weight (the deleted release workflow had one). PHP is set up in the check jobs, which is a different job and a different container.
-
-**No manually created token is needed.** The publish step authenticates with `secrets.GITEA_TOKEN`, the token Gitea injects into every Actions job automatically (Gitea 1.27.1 here). The job declares `permissions: contents: write`, which Gitea maps to *Code: write* (needed to delete the `latest-main` tag) plus *Releases: write* (creating the release and uploading the asset).
-
-This replaced an earlier hand-made `RELEASE_TOKEN` repo secret. If the publish step ever starts returning 403s, check the repo/org **default token permission mode**: `permissions:` requests are clamped by `MaxTokenPermissions`, so a repository switched from *Permissive* (the backwards-compatible default) to *Restricted* silently downgrades releases to read-only and no `permissions:` block can raise it back. That's a repo setting, not a workflow bug — don't "fix" it by reintroducing a PAT before checking.
-
-## Data flow / architecture map
-
-- **UI**: `src/PersonalSettings.vue` (Vue 3, mounted from `templates/settings/personal.php` into the section registered by `lib/Settings/PersonalSection.php` + `lib/Settings/Personal.php`) talks to `lib/Controller/WorkflowController.php` (an `OCSController`) via `src/api.js`, hitting OCS routes declared in `appinfo/routes.php` (`/ocs/v2.php/apps/workflow_deck_automation/api/v1/...`).
-- **Storage**: `lib/Db/Workflow.php` (Entity) / `lib/Db/WorkflowMapper.php` (QBMapper) over the `wfda_workflows` table, created in `lib/Migration/Version1000Date20260813120000.php`. Filter fields (`filter_user_ids`, `filter_label_ids`) are stored as JSON-encoded arrays in text columns, not join tables.
-- **Automation**: `lib/BackgroundJob/RunWorkflowsJob.php` (plain `Job`, one run per cron pass) → `lib/Service/WorkflowRunner.php` (per-user impersonation + filtering, both filters OR-within-themselves and AND-between-each-other) → `lib/Service/DeckIntegrationService.php` (all actual Deck class calls) and `lib/Service/NotificationMailer.php` (email via `OCP\Mail\IMailer` to the workflow owner's account address, never a manually-entered address).
-- Both the controller's board/stack/label/participant lookups (for populating the settings UI dropdowns) and the runner's card reads/moves go through the same `DeckIntegrationService` — there is no separate read path.
-
-## Composer/npm lockfiles are intentionally not committed
-
-`.gitignore` excludes `composer.lock` and `package-lock.json`. This means CI must use `composer install`/`npm install`, not `composer install --no-dev` assumptions tied to a lock file or `npm ci` (which hard-requires a lock file and will fail otherwise — this has already broken the build workflow once). If you add a lockfile-dependent step, either commit the lockfile deliberately or keep using the non-`ci`/non-locked install form.
-
-## Frontend build gotchas already hit (don't reintroduce)
-
-None of these were discoverable locally — there's no npm here (see "Local-only notes" below), so all three were only caught by an actual Gitea Actions run against the build workflow:
-
-- **`vite` version must satisfy `@nextcloud/vite-config`'s peer requirement.** `package.json` pins `@nextcloud/vite-config` to `^2.2.0`, which currently resolves to `2.5.4` and peer-requires `vite@^7.3.6`. If you bump `@nextcloud/vite-config`, check its `peerDependencies.vite` and bump our `vite` devDependency to match, or `npm install` fails with `ERESOLVE`.
-- **`package.json` needs `"type": "module"`.** `vite.config.js` uses `import`/`export` syntax and `@nextcloud/vite-config` is ESM-only; without `"type": "module"`, Node treats `.js` as CommonJS and `vite build` fails trying to `require()` an ESM-only package.
-- **A `tsconfig.json` must exist at the repo root, even though this project has no TypeScript source.** `@nextcloud/vite-config`'s `index.js` barrel statically re-exports `createLibConfig` from `libConfig.js`, which imports `vite-plugin-dts` at module scope — that import chain runs just from importing `createAppConfig`, regardless of whether `createLibConfig` is ever called. The minimal `tsconfig.json` in this repo exists to give that a config to resolve, not because we write TypeScript. On its own this did **not** fix the crash below — see the next bullet.
-- **`typescript` must be an explicit devDependency.** `vite-plugin-dts` (pulled in transitively by the bullet above, version `^4.5.4` as of `@nextcloud/vite-config@2.5.4`) peer-depends on `typescript: "*"` but doesn't install it itself. Without a `typescript` devDependency in our own `package.json`, nothing provides that package, and `vite-plugin-dts`'s `@volar/typescript` integration crashes at module-load time — before `vite.config.js`'s own code or `tsconfig.json` are ever consulted — with `Cannot read properties of undefined (reading 'useCaseSensitiveFileNames')` (`proxyCreateProgram`). This is the actual fix; `tsconfig.json` existing is necessary but not sufficient. Keep `typescript` reasonably close to the version `@nextcloud/vite-config` itself develops against (currently `^5.9.3`) if you bump either.
-- **`createAppConfig` prefixes every entry name with the app id**, so the entry `personal-settings` is emitted as `js/workflow_deck_automation-personal-settings.mjs` and `css/workflow_deck_automation-personal-settings.css`. `Util::addScript()`/`addStyle()` take that *full on-disk basename* (minus extension), not the bare entry name — `lib/Settings/Personal.php` therefore passes `Application::APP_ID . '-personal-settings'`. Getting this wrong produces a **silently blank settings page**: the template's empty mount `<div>` renders fine, and the only symptom is `Could not find resource workflow_deck_automation/js/….js to load` (`jsresourceloader`) plus a matching `Could not find resource file "/apps/workflow_deck_automation/css/….css"` in `nextcloud.log`. If you rename the entry in `vite.config.js`, rename it in `Personal.php` too.
-- **The bulk of the CSS lives in a hashed `*.chunk.css`**, loaded at runtime by the `.mjs` bundle (`cssCodeSplit: true`). The `css/workflow_deck_automation-personal-settings.css` that `addStyle()` points at is the ~100-byte stub produced by `createEmptyCSSEntryPoints: true`. A near-empty entry CSS file is expected — don't "fix" it by turning off code splitting.
-
-## `@nextcloud/vue` 9 component API (Vue 3) — the v8 idioms silently do nothing
-
-This app is on `@nextcloud/vue` ^9 / Vue 3. The v8 (Vue 2) prop spellings that most Nextcloud app code online still uses either fail silently or, worse, land as stray DOM attributes instead of erroring:
-
-- **No `.sync`.** Vue 3 removed it. `NcTextField` and `NcCheckboxRadioSwitch` both bind through `modelValue`/`update:modelValue`, so it's `v-model="x"` — `:value.sync="x"` / `:checked.sync="x"` leave the bound state permanently at its initial value. That's how `form.title` stayed `''` and every save died on "Bitte einen Titel angeben."
-- **`NcSelect`'s `label` prop is the *option display key*, not a caption** (it's vue-select's). Passing `label="Board"` makes it read `option.Board` on every option and render `undefined` for all of them. The visible caption prop is `input-label`.
-- **`NcButton`: `variant` is the style, `type` is the native button type**, and `native-type` no longer exists (v8's `type="primary"` + `native-type="submit"` → v9's `variant="primary"` + `type="submit"`). A leftover `type="primary"` renders `<button type="primary">`, which HTML treats as the invalid-value default `submit` — so a *cancel* button silently submits the form.
-- `NcSelect`'s `reduce` is not declared on `NcSelect` itself; it reaches vue-select through attribute fallthrough (NcSelect's root element *is* the `VueSelect` component and it doesn't set `inheritAttrs: false`). It works, but it's fallthrough, not a documented prop.
-- `NcNoteCard`'s prop is still `type` (`success|info|warning|error`) — not everything was renamed to `variant`.
-
-## Deck entities are "relational": getters don't return the uid string
-
-Deck's `RelationalEntity` swaps resolved relations for an `OCA\Deck\Db\RelationalObject` once an entity is enriched. So on an enriched board/card, `$acl->getParticipant()`, `$board->getOwner()` and a card assignment's participant return a `RelationalObject` (wrapping `OCA\Deck\Db\User`/`Group`/`Circle`), **not** a uid — the uid is its `getPrimaryKey()`. Probing for `getUID()` on the returned object finds nothing and yields `null`, which is how the settings UI's user dropdown came up empty *and* why the runner's assigned-user filter could never match. `DeckIntegrationService::unwrapUid()` handles both shapes (bare string and `RelationalObject`); route any new participant/owner field through it.
-
-Two more Deck facts that bit us in the same pass: a board's ACL does **not** contain its owner (a private board has an empty ACL, so participants must be seeded with `$board->getOwner()`), and ACL entries can be groups (`type === 1`) whose members have to be expanded via `IGroupManager`.
-
-**`BoardService::getUserBoards()` defaults to `$includeArchived = true`, and that flag also gates the `deleted_at = 0` condition** — with the default you get archived *and* trashed boards back. We call `getUserBoards(null, false)` (with a fallback to the no-arg form if Deck ever changes the signature) and still dedupe by id afterwards, because it merges own/group/circle boards and can return the same board twice. Stacks need no such handling: `StackMapper::findAll()` filters `deleted_at = 0` unconditionally and stacks have no archived state.
-
-## Local-only notes
-
-`CLAUDE.local.md` (gitignored) carries session-specific environment notes (e.g. "no PHP/npm available locally"). Check it at the start of work in this repo — it's not duplicated here since it can change independently of the committed guidance.
+- **Relationale Entities:** Auf angereicherten Entities liefern `$acl->getParticipant()`, `$board->getOwner()` oder Assignment-Teilnehmer ein `RelationalObject` statt einer uid (uid = `getPrimaryKey()`). Neue Teilnehmer-/Owner-Felder immer über `DeckIntegrationService::unwrapUid()` laufen lassen.
+- Die ACL eines Boards enthält **nicht** den Owner (privates Board = leere ACL). ACL-Einträge können Gruppen (`type === 1`) oder Circles sein.
+- `StackMapper::findAll()` filtert `deleted_at = 0` selbst. Stacks haben keinen Archivstatus.
+- **Entity-Getter sind magisch** (`Entity::__call`, z. B. `getDeletedAt()`, `getArchived()`, `getStartdate()`). `method_exists()` ist für sie immer `false`. Vorhandensein per `property_exists()` prüfen (`DeckIntegrationService::isTrashed()`/`isArchived()`/`supportsStartdate()`). Mit `method_exists()` wurden früher Karten aus dem Papierkorb verschoben, und Papierkorb- wie Archiv-Boards blieben unerkannt.
+- Der Deck-Quellcode liegt lokal unter `C:\Users\pani\Documents\git-privat\nextcloud-deck` und dient zum Nachprüfen von Interna.

DEVELOPMENT.md

@@ -0,0 +1,136 @@
+# Entwicklung
+
+Informationen für Entwickler und Admins, die tiefer einsteigen. Die Nutzer-Doku steht in der [README](README.md). Ausführliche Hintergründe zu den Stolperfallen, also warum etwas genau so gebaut ist, stehen in [CLAUDE.md](CLAUDE.md).
+
+## Aufbau
+
+- **Keine HTTP/OCS-Aufrufe gegen Deck.** Lesen (Boards, Stapel, Karten, Board-Mitglieder) und das Verschieben laufen ausschließlich über Decks interne PHP-Klassen im selben Prozess. Sämtlicher Deck-Zugriff ist in [`lib/Service/DeckIntegrationService.php`](lib/Service/DeckIntegrationService.php) gebündelt.
+  - `OCA\Deck\*` ist keine stabile öffentliche API. Jeder Zugriff ist deshalb abgesichert: `class_exists()`-Checks, Prüfung ob Deck aktiviert ist, try/catch mit Logging.
+  - Nach größeren Deck-Updates lohnt sich ein Blick ins Nextcloud-Log.
+- **Hintergrundjob:** [`RunWorkflowsJob`](lib/BackgroundJob/RunWorkflowsJob.php) ist ein einfacher `Job` ohne Intervall. Er läuft bei jedem Cron-Durchlauf und ruft [`WorkflowRunner`](lib/Service/WorkflowRunner.php) auf.
+- **Rechte-Kontext:** Der Runner arbeitet die Workflows nach Eigentümer gruppiert ab und setzt Deck jeweils auf diesen Nutzer, per `DeckIntegrationService::beginUserContext()`. Decks Berechtigungsprüfungen lesen nämlich nicht die Session, sondern eine pro Prozess festgelegte Nutzer-ID.
+- **E-Mail:** [`NotificationMailer`](lib/Service/NotificationMailer.php) verschickt über Nextclouds `IMailer`. Die Empfänger ermittelt `DeckIntegrationService::findNotificationRecipients()`, die Entscheidungsregel steckt in [`NotificationPolicy`](lib/Service/NotificationPolicy.php).
+- **Nextcloud-Benachrichtigungen:** [`NotificationPusher`](lib/Service/NotificationPusher.php) legt sie über `OCP\Notification\IManager` an, eine pro Karte, an dieselben Empfänger wie die Mail. Er speichert nur Rohwerte. Den deutschen Text baut [`Notifier`](lib/Notification/Notifier.php), registriert in `Application::register()`. Ist die App `notifications` für einen Empfänger nicht aktiv, wird nichts angelegt. Push aufs Handy übernimmt die Notifications-App selbst.
+- **Oberfläche:** [`src/PersonalSettings.vue`](src/PersonalSettings.vue) (Vue 3, `@nextcloud/vue` 9) spricht über [`src/api.js`](src/api.js) mit dem OCS-Controller [`WorkflowController`](lib/Controller/WorkflowController.php).
+
+## Datenmodell
+
+Die Tabelle `wfda_workflows` enthält eine Zeile pro Workflow:
+
+| Spalte | Bedeutung |
+| --- | --- |
+| `board_id`, `source_stack_id`, `target_stack_id` | Deck-IDs |
+| `user_id` | Board-Eigentümer, in dessen Namen der Job läuft. Wird bei jedem Lauf aus Deck aktualisiert. |
+| `trigger_date` | `due` oder `start`: Fälligkeits- oder Startdatum löst das Verschieben aus |
+| `notify_mode` | `off`, `owner` oder `board` (wer) |
+| `notify_channel` | `mail`, `notification` oder `both` (wie) |
+| `enabled`, `last_run` | aktiv? / letzter Lauf |
+
+Migrationen in [`lib/Migration/`](lib/Migration/):
+- `Version1000…` legt die Tabelle an.
+- `Version1001…` entfernt die früheren Filter-Spalten.
+- `Version1002…` und `Version1003…` ersetzen `notify_email` durch `notify_mode`. Ein gesetztes Häkchen wird dabei zu `owner`.
+- `Version1004…` fügt `notify_channel` hinzu. Bestehende Workflows bekommen `mail`.
+- `Version1005…` fügt `trigger_date` hinzu. Bestehende Workflows bekommen `due`.
+
+Migrationen laufen nur, wenn die App-Version steigt.
+
+## Lokales Setup
+
+Voraussetzungen: PHP 8.4+, Composer, Node.js 24 mit npm.
+
+```bash
+composer install
+npm install          # nicht `npm ci`: Lockfiles werden bewusst nicht committet
+npm run build        # Produktions-Build
+npm run watch        # Entwicklung mit automatischem Rebuild
+```
+
+## Tests und Linting
+
+```bash
+composer run lint        # php -l über lib/ und tests/
+composer run cs:check    # nextcloud/coding-standard (cs:fix korrigiert)
+composer run test:unit   # PHPUnit
+```
+
+Die Unit-Tests decken nur reine Logik ab, ohne Deck-Installation:
+- Datumsvergleich für Fälligkeits- und Startdatum (`WorkflowRunner::hasPassed()`)
+- Auslöser und Begründungstext (`TriggerDate`)
+- Schleifenerkennung (`LoopDetector`)
+- Empfängerregel (`NotificationPolicy::shouldNotify()`)
+- Benachrichtigungsweg (`NotificationPolicy::sendsMail()`/`sendsNotification()`)
+
+Die Deck-Anbindung lässt sich nur auf einer echten Nextcloud-Instanz mit Deck testen:
+
+```bash
+# Job-ID und letzten Lauf anzeigen
+php occ background-job:list --class 'OCA\WorkflowDeckAutomation\BackgroundJob\RunWorkflowsJob'
+
+# Sofort ausführen, ohne auf Cron zu warten
+php occ background-job:execute <id> --force-execute
+```
+
+## Build, CI und Release
+
+`make appstore` erzeugt `build/artifacts/appstore/workflow_deck_automation.tar.gz`.
+
+Gebaut und veröffentlicht wird in [`.gitea/workflows/build-main.yml`](.gitea/workflows/build-main.yml):
+
+| Job | Zweck |
+| --- | --- |
+| `php-lint` | `php -l` mit PHP 8.4 und 8.5 |
+| `xml-lint` | prüft `appinfo/info.xml` gegen das Appstore-Schema |
+| `unit-tests` | PHPUnit |
+| `package` | Frontend-Build und `make appstore`. Läuft nur, wenn die Checks grün sind. |
+
+Das Paket wird als Release veröffentlicht:
+- Bei jedem Push auf `main` als Pre-Release **`latest-main`**, das jedes Mal neu erzeugt wird.
+- Bei einem `v*`-Tag als reguläres Release.
+- Bei Pull Requests wird nur gebaut, nicht veröffentlicht.
+
+**Versionen** folgen dem Schema `<Nextcloud-Major>.<minor>.<patch>`. Die unterstützte Nextcloud-Version steht in `appinfo/info.xml`.
+
+Ablauf für ein Release:
+1. Version in `appinfo/info.xml` und `package.json` gleich anheben.
+2. Auf `main` pushen und warten, bis die Pipeline grün ist.
+3. `git tag -a vX.Y.Z -m "…" && git push origin vX.Y.Z`.
+4. Optional in den App Store: in Gitea unter *Actions* den Workflow „Publish to App Store“ von Hand starten und den Tag angeben.
+
+### App Store
+
+[`.gitea/workflows/appstore.yml`](.gitea/workflows/appstore.yml) läuft nur von Hand (`workflow_dispatch`). Er baut nichts selbst. Er lädt den Tarball eines vorhandenen `vX.Y.Z`-Release ohne Anmeldung herunter und prüft, ob die Version in `info.xml` zum Tag passt. Dann signiert er das Archiv (SHA-512) und meldet die Download-URL samt Signatur an die App-Store-API. Der Store lädt den Tarball danach selbst von Gitea. Die Releases müssen deshalb öffentlich erreichbar sein, und ein Tag darf nach dem Store-Upload nicht mehr verschoben werden.
+
+Benötigte Repository-Secrets:
+
+| Secret | Inhalt |
+| --- | --- |
+| `APPSTORE_PRIVATE_KEY` | privater Schlüssel (PEM), zu dem Nextcloud das App-Zertifikat ausgestellt hat |
+| `APPSTORE_TOKEN` | API-Token von <https://apps.nextcloud.com/account/token> |
+
+Einmalig vorher: Zertifikat über [nextcloud/app-certificate-requests](https://github.com/nextcloud/app-certificate-requests) beantragen und die App auf apps.nextcloud.com registrieren. Die App wird nicht per Code-Signing (`appinfo/signature.json`) signiert. Nextcloud prüft Apps, die nicht zum Core gehören, nur dann, wenn diese Datei vorhanden ist.
+
+Einzelheiten, etwa zum Verschieben eines Tags nach einem fehlgeschlagenen Build, stehen in [CLAUDE.md](CLAUDE.md).
+
+## Fehlersuche: Der Job läuft nur nachts oder gar nicht
+
+Nextcloud überspringt „nicht zeitkritische“ Jobs außerhalb des Wartungsfensters (`maintenance_window_start` in der `config.php`). Bis einschließlich v0.1.0 war dieser Job als nicht zeitkritisch markiert. Diese Markierung bleibt in der Spalte `oc_jobs.time_sensitive` stehen, auch nach App-Updates.
+
+Symptom: Der Job läuft nur im 4-Stunden-Wartungsfenster, oder `occ background-job:list` zeigt als letzten Lauf `1970-01-01`.
+
+Einmalig korrigieren:
+
+```sql
+UPDATE oc_jobs SET time_sensitive = 0
+ WHERE class = 'OCA\\WorkflowDeckAutomation\\BackgroundJob\\RunWorkflowsJob';
+```
+
+Oder ohne Datenbankzugriff den Job löschen und durch Aus- und Einschalten der App neu registrieren:
+
+```bash
+php occ background-job:delete <id>
+php occ app:disable workflow_deck_automation
+php occ app:enable workflow_deck_automation
+```
+
+Die frühere `config.php`-Option `workflow_deck_automation.interval` (bis v0.1.0) wird ignoriert und kann entfernt werden.

LICENSE

@@ -0,0 +1,661 @@
+                    GNU AFFERO GENERAL PUBLIC LICENSE
+                       Version 3, 19 November 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
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Makefile

@@ -24,6 +24,7 @@ appstore: clean
 		--exclude=./.php-cs-fixer.cache \
 		--exclude=./phpunit.xml \
 		--exclude=./README.md \
+		--exclude=./DEVELOPMENT.md \
 		--exclude=./Makefile \
 		--exclude=./CLAUDE.md \
 		--exclude=./CLAUDE.local.md \

README.md

@@ -1,150 +1,115 @@
 # Deck Workflow-Automatisierung
 
-Nextcloud-App für **Nextcloud Hub 26 Spring (Server 34.x)**, die überfällige Karten der [Deck](https://github.com/nextcloud/deck)-App automatisch von einem Stapel in einen anderen verschiebt und optional eine E-Mail-Benachrichtigung verschickt.
+Nextcloud-App, die Karten der [Deck](https://apps.nextcloud.com/apps/deck)-App automatisch von einem Stapel in einen anderen verschiebt, sobald ihr Fälligkeits- oder Startdatum erreicht ist, und auf Wunsch per E-Mail oder Nextcloud-Benachrichtigung (Push) darüber informiert.
 
-Ersetzt das früher genutzte eigenständige PHP-Cron-Skript durch eine vollwertige App mit Oberfläche in den **persönlichen Einstellungen** — jeder Nutzer kann dort seine eigenen Regeln ("Workflows") anlegen, ohne Admin-Rechte oder Server-Zugriff zu benötigen.
+Die Regeln („Workflows“) richtet der **Eigentümer eines Boards** selbst in seinen **persönlichen Einstellungen** ein. Admin-Rechte braucht er dafür nicht. Für geteilte Boards anderer Nutzer lassen sich keine Workflows anlegen.
 
-## Funktionsumfang
+> Entwickler-Informationen (Aufbau, Tests, Build, Release) stehen in [DEVELOPMENT.md](DEVELOPMENT.md).
 
-Pro Workflow lässt sich konfigurieren:
+## Was die App macht
 
-- Quell-Board und Quell-Stapel
-- Ziel-Stapel, in den überfällige Karten verschoben werden
-- optionaler Filter auf zugewiesene Benutzer (Karte muss **mindestens einem** der gewählten Benutzer zugewiesen sein)
-- optionaler Filter auf Labels/Tags (Karte muss **mindestens eines** der gewählten Labels haben)
-- Checkbox: E-Mail-Benachrichtigung an den Workflow-Besitzer, sobald eine Karte verschoben wurde
+Ein Workflow besteht aus einem Board, einem **Quell-Stapel**, einem **Ziel-Stapel** und dem **Datum**, das das Verschieben auslöst. Bei jedem Durchlauf verschiebt die App **alle Karten** des Quell-Stapels, bei denen dieses Datum erreicht ist, oben in den Ziel-Stapel.
 
-Ein Nutzer kann beliebig viele Workflows anlegen, bearbeiten, deaktivieren oder löschen.
+- **Fälligkeitsdatum** (Standard): Die Karte wird verschoben, sobald sie überfällig ist, also ihr Fälligkeitsdatum samt Uhrzeit überschritten ist.
+- **Startdatum**: Die Karte wird verschoben, sobald ihr Startdatum samt Uhrzeit erreicht ist. Das Startdatum setzt du in Deck in den Kartendetails neben dem Fälligkeitsdatum.
 
-## Architektur
+Karten ohne das gewählte Datum sowie erledigte, archivierte oder gelöschte Karten bleiben liegen.
 
-- **Keine HTTP/OCS-Aufrufe gegen Deck.** Alles Lesen (Boards, Stapel, Karten, Labels, zugewiesene Benutzer) und das Verschieben von Karten läuft ausschließlich über Decks eigene interne PHP-Klassen (`OCA\Deck\Service\CardService`, `StackService`, `BoardService`, `OCA\Deck\Db\CardMapper`, …), aufgelöst per Dependency Injection direkt im selben PHP-Prozess. Sämtlicher Deck-Zugriff ist in [`lib/Service/DeckIntegrationService.php`](lib/Service/DeckIntegrationService.php) gebündelt.
-- **Hintergrundjob statt Seitenaufruf.** [`lib/BackgroundJob/RunWorkflowsJob.php`](lib/BackgroundJob/RunWorkflowsJob.php) ist ein einfacher `Job` ohne eigenes Intervall: Er läuft bei jedem Cron-Durchlauf von Nextcloud (üblicherweise alle 5 Minuten) und ruft [`lib/Service/WorkflowRunner.php`](lib/Service/WorkflowRunner.php) auf.
-- **Rechte-Kontext je Nutzer.** Ein Hintergrundjob hat standardmäßig keinen eingeloggten Nutzer, muss aber die Regeln mehrerer Nutzer in einem einzigen Lauf auswerten. Der `WorkflowRunner` "verkörpert" deshalb für die Dauer der jeweiligen Workflows kurzzeitig den entsprechenden Besitzer. Dazu gehört mehr als `IUserSession::setUser()`: Decks Berechtigungsprüfungen lesen die Session gar nicht, sondern eine Benutzer-ID, die beim Bau des Deck-Containers einmal pro Prozess eingefroren wird. `DeckIntegrationService::beginUserContext()` setzt diesen Wert für die Dauer der Verkörperung auf den Workflow-Besitzer und stellt ihn danach wieder her; schlägt das fehl, wird der Nutzer in diesem Lauf übersprungen, statt unter fremden Rechten zu arbeiten.
-- **E-Mail** läuft über Nextclouds eigenen `IMailer` (nutzt also den in der Nextcloud-Administration hinterlegten Mailserver) und geht an die im Profil des Workflow-Besitzers hinterlegte Adresse.
+Beispiele:
+- Ein Workflow „Waiting → ToDo“ holt jede Karte aus „Waiting / Blocked“ nach „Work in Progress / ToDo“, sobald ihr Fälligkeitsdatum erreicht ist.
+- Ein Workflow „Geplant → In Arbeit“ mit Startdatum holt jede Karte aus „Geplant“ nach „In Arbeit“, sobald an ihrem Startdatum die Arbeit beginnen soll.
 
-### Wichtiger Hinweis zu Decks internen Klassen
+## Einrichtung (für Administratoren)
 
-`OCA\Deck\*` ist keine dokumentierte, stabile öffentliche API von Deck (keine `@since`-Markierungen, keine offizielle Zusicherung von Abwärtskompatibilität). Diese App verwendet sie trotzdem bewusst direkt, wie es die Vorgabe verlangt — jeder Zugriff läuft defensiv abgesichert über `DeckIntegrationService` (Prüfung, ob Deck aktiviert ist, `class_exists()`-Checks, try/catch mit Logging statt Absturz). Nach größeren Deck-Updates lohnt sich ein Blick ins Nextcloud-Log, falls Workflows plötzlich nicht mehr greifen.
+1. App nach `apps/workflow_deck_automation` auf den Server kopieren, zum Beispiel aus dem Release-Archiv `workflow_deck_automation.tar.gz`, und unter *Apps* aktivieren.
+2. Die [Deck-App](https://apps.nextcloud.com/apps/deck) muss installiert und für die Nutzer aktiviert sein.
+3. Die [Hintergrundjobs](https://docs.nextcloud.com/server/latest/admin_manual/configuration_server/background_jobs_configuration.html) müssen auf *Cron* stehen.
+4. Für E-Mails muss in der Nextcloud-Administration ein Mailserver eingerichtet sein.
+5. Für Nextcloud-Benachrichtigungen muss die App **Benachrichtigungen** (`notifications`) aktiviert sein, was sie standardmäßig ist. Fehlt sie, verschickt die App einfach keine Benachrichtigungen. E-Mails kommen trotzdem.
 
-## Installation
+Die Workflows laufen bei **jedem** Cron-Durchlauf von Nextcloud, üblicherweise alle 5 Minuten. Ein eigenes Intervall gibt es nicht.
 
-1. App in `apps/workflow_deck_automation` des Nextcloud-Servers ablegen (oder über den Appstore-Build aus der CI, siehe unten).
-2. In der Nextcloud-Administration unter *Apps* aktivieren.
-3. Die [Deck-App](https://apps.nextcloud.com/apps/deck) muss installiert und für die jeweiligen Nutzer aktiviert sein.
-4. Sicherstellen, dass der [Hintergrundjob-Modus](https://docs.nextcloud.com/server/latest/admin_manual/configuration_server/background_jobs_configuration.html) auf *Cron (empfohlen)* steht, damit `RunWorkflowsJob` regelmäßig läuft.
+## Workflows anlegen
 
-## Benutzung
+Die Einstellungen liegen unter **Persönliche Einstellungen → Deck Workflow-Automatisierung**. Dort legst du Workflows an und kannst sie bearbeiten, deaktivieren oder löschen.
 
-Jeder Nutzer findet die Einstellungen unter **Persönliche Einstellungen → Deck Workflow-Automatisierung**. Dort können neue Workflows angelegt, bestehende bearbeitet oder gelöscht werden. Die Dropdowns für Board/Stapel/Label/Benutzer werden live aus Deck geladen. Zur Auswahl stehen nur aktive Boards — archivierte und im Papierkorb liegende Boards sowie gelöschte Stapel blendet Deck bzw. die App aus.
+- **Board:** Zur Auswahl stehen nur Boards, deren **Eigentümer** du bist. Geteilte, archivierte und gelöschte Boards erscheinen nicht.
+- **Quell- und Ziel-Stapel:** Das müssen zwei verschiedene Stapel desselben Boards sein.
+- **Karte verschieben, wenn:** das Fälligkeitsdatum überschritten oder das Startdatum erreicht ist.
+- **Keine Schleifen:** Ein aktiver Workflow darf mit den anderen aktiven Workflows des Boards keinen Kreis bilden, etwa „A → B“ und „B → A“. Sonst würden Karten bei jedem Durchlauf hin- und hergeschoben. Beim Speichern wird das abgelehnt, mit den Namen der beteiligten Workflows. Das gilt unabhängig davon, ob die Workflows nach Fälligkeits- oder Startdatum verschieben. Ketten wie „A → B“ und „B → C“ sind erlaubt.
+- **Benachrichtigung bei verschobenen Karten** und **Benachrichtigen per:** siehe unten.
+- **Workflow aktiv:** Deaktivierte Workflows bleiben gespeichert, verschieben aber nichts.
 
-### Gelöschte Boards und Stapel
+Ein Workflow gehört immer dem Eigentümer des Boards. Überträgst du ein Board in Deck an jemand anderen, wandern seine Workflows mit: Der neue Eigentümer sieht und verwaltet sie ab sofort, und die Karten werden in seinem Namen verschoben.
 
-Ein Workflow verweist per ID auf ein Board und zwei Stapel. Wird eines davon in Deck gelöscht, passiert Folgendes:
+## Benachrichtigungen
 
-- **Beim Speichern** werden Board und Stapel geprüft; ein Workflow auf nicht mehr existierende Ziele lässt sich gar nicht erst anlegen.
-- **In der Übersicht** wird ein betroffener Workflow rot markiert („Board nicht mehr vorhanden", „Quell-Stapel nicht mehr vorhanden" …).
-- **Im Hintergrundjob** wird der Workflow automatisch deaktiviert und der Besitzer einmalig per E-Mail informiert — unabhängig davon, ob für den Workflow „E-Mail senden" aktiviert ist, denn hier geht es nicht um verschobene Karten, sondern darum, dass die Automatisierung nicht mehr läuft. Danach bleibt es still: Ein deaktivierter Workflow wird nicht erneut ausgewertet.
+Pro Workflow stellst du ein, **wer** über verschobene Karten informiert wird und **wie**.
 
-Ist Deck vorübergehend nicht erreichbar, wird **nicht** deaktiviert — der Job überspringt den Workflow und versucht es beim nächsten Lauf erneut. Archivierte Boards lösen die Deaktivierung ebenfalls nicht aus, sie sind nur in den Auswahlfeldern ausgeblendet.
+### Wer?
 
-### Gelöschte Labels und entfernte Benutzer
-
-Filter sind ein anderer Fall: Sie werden **nicht** deaktiviert. Wird eines von drei ausgewählten Labels gelöscht, greifen die anderen beiden weiter — das abzuschalten wäre falsch.
-
-Problematisch ist nur der Grenzfall, dass **alle** Einträge eines Filters verschwunden sind. Der Workflow läuft dann weiter, kann aber keine einzige Karte mehr treffen. Das passiert bei gelöschten Labels und ebenso, wenn ein gefilterter Benutzer die Board-Freigabe verliert — Deck entfernt dabei alle seine Kartenzuweisungen auf diesem Board.
-
-Damit dieser Zustand nicht unsichtbar bleibt:
-
-- **In der Übersicht** wird der Workflow rot markiert („Label-Filter trifft keine Karte mehr", „Benutzer-Filter trifft keine Karte mehr").
-- **Im Hintergrundjob** landet bei jedem Lauf eine Warnung im `nextcloud.log`.
-
-Keine E-Mail und keine Deaktivierung: Ein einziger Board-Klick kann den Filter wieder lebendig machen. Und wie bei Board und Stapel gilt auch hier — lässt sich das Board gerade nicht abfragen, wird nichts gemeldet statt etwas Falsches.
-
-## Ausführungstakt
-
-Der Hintergrundjob hat **kein eigenes Intervall** und ist auch nicht konfigurierbar: Er läuft bei **jedem** Cron-Durchlauf von Nextcloud. Der Takt ist damit exakt der des System-Crons — üblicherweise alle 5 Minuten, bei einem häufiger eingerichteten Cron entsprechend öfter.
-
-> Bis einschließlich v0.1.0 gab es dafür die `config.php`-Option `workflow_deck_automation.interval`. Sie ist entfallen und wird ignoriert; ein vorhandener Eintrag kann aus der `config.php` entfernt werden.
-
-### Der Job läuft nur nachts bzw. gar nicht
-
-Nextcloud merkt sich in der Spalte `time_sensitive` der Tabelle `oc_jobs`, ob ein Job zeitkritisch ist, und überspringt „unkritische" Jobs außerhalb des Wartungsfensters. `JobList::setLastRun()` setzt diese Spalte nur in eine Richtung — von „zeitkritisch" auf „unkritisch", nie zurück. Wer eine ältere Version dieser App installiert hatte (bis einschließlich v0.1.0 war der Job `TIME_INSENSITIVE`), hat diesen Stempel noch in der Datenbank. Er wird weder durch ein App-Update noch durch `app:enable` zurückgesetzt.
-
-Symptom: Ist in der `config.php` ein `maintenance_window_start` gesetzt, läuft der Job nur in diesem 4-Stunden-Fenster und den Rest des Tages gar nicht.
-
-Einmalig korrigieren:
-
-```sql
-UPDATE oc_jobs SET time_sensitive = 0
- WHERE class = 'OCA\\WorkflowDeckAutomation\\BackgroundJob\\RunWorkflowsJob';
-```
-
-Ohne Datenbankzugriff geht es auch über `occ`, indem der Job gelöscht und durch Aus-/Einschalten der App neu registriert wird:
-
-```bash
-php occ background-job:list --class 'OCA\WorkflowDeckAutomation\BackgroundJob\RunWorkflowsJob'
-php occ background-job:delete <id>
-php occ app:disable workflow_deck_automation
-php occ app:enable workflow_deck_automation
-```
-
-Neuinstallationen sind nicht betroffen.
-
-## Entwicklung
-
-Voraussetzungen: PHP 8.2+, Composer, Node.js 24+, npm 11+.
-
-```bash
-composer install
-npm install
-npm run build      # einmaliger Produktions-Build
-npm run watch       # Entwicklung mit automatischem Rebuild
-```
-
-### Tests & Linting
-
-```bash
-composer run lint       # php -l über lib/ und tests/
-composer run cs:check   # nextcloud/coding-standard (php-cs-fixer)
-composer run test:unit  # PHPUnit — reine Filter-Logik, benötigt keine Deck-Installation
-```
-
-Ein echter End-to-End-Test (Karte anlegen, Workflow konfigurieren, Hintergrundjob auslösen, Verschiebung + Mail prüfen) lässt sich nur gegen eine echte Nextcloud-34-Instanz mit installierter Deck-App durchführen, z. B. per:
-
-```bash
-# Job-ID und letzten Lauf anzeigen
-php occ background-job:list --class 'OCA\WorkflowDeckAutomation\BackgroundJob\RunWorkflowsJob'
-
-# Sofort ausführen, ohne auf den nächsten Cron-Durchlauf zu warten
-php occ background-job:execute <id> --force-execute
-
-# Oder dauerhaft als Worker laufen lassen (Argument ist die Job-Klasse, keine App-ID)
-php occ background-job:worker 'OCA\WorkflowDeckAutomation\BackgroundJob\RunWorkflowsJob'
-```
-
-### Release-Paket bauen
-
-```bash
-make appstore
-```
-
-Erzeugt `build/artifacts/appstore/workflow_deck_automation.tar.gz`.
-
-## CI (Gitea Actions)
-
-In [`.gitea/workflows/`](.gitea/workflows/):
-
-| Workflow | Zweck |
+| Einstellung | Wer wird informiert? |
 | --- | --- |
-| `lint-php.yml` | `php -l` über eine PHP-8.2–8.4-Matrix |
-| `lint-info-xml.yml` | validiert `appinfo/info.xml` gegen das Appstore-XML-Schema |
-| `phpunit.yml` | führt die PHPUnit-Tests aus (SQLite/rein logisch, kein DB-Service nötig) |
-| `build-main.yml` | baut Frontend + Appstore-Archiv und veröffentlicht es als Release-Asset — bei Push auf `main` als rollendes Pre-Release `latest-main`, bei Push eines `v*`-Tags als reguläres Release |
+| **Keine Benachrichtigung** | niemand |
+| **Nur an mich** | der Eigentümer des Boards, unabhängig von seinen Deck-Einstellungen |
+| **An Board-Mitglieder laut ihrer Deck-Einstellung** | alle, die das Board sehen dürfen, je nach ihrer eigenen Deck-Einstellung (siehe unten) |
 
-## Datenmodell
+Bei der dritten Stufe entscheidet jedes Board-Mitglied selbst. Dazu gehören der Eigentümer, Personen mit Freigabe sowie Mitglieder freigegebener Gruppen und Teams. Die Einstellung liegt in Deck im Menü **…** neben dem Board unter **Fälligkeitserinnerungen**:
 
-Workflows werden in der Tabelle `wfda_workflows` gespeichert (siehe [`lib/Migration/Version1000Date20260813120000.php`](lib/Migration/Version1000Date20260813120000.php)): eine Zeile pro Workflow, mit `user_id`-Bezug, Board-/Stapel-IDs, JSON-kodierten Filterlisten sowie `enabled`/`notify_email`/`last_run`.
+- **Alle Karten:** für jede verschobene Karte
+- **Zugewiesene Karten** (Deck-Standard): nur für Karten, denen man zugewiesen ist, direkt oder über eine Gruppe oder ein Team
+- **Keine Benachrichtigungen:** nie
+
+Bei einem Board, das mit niemandem geteilt ist, bekommt der Eigentümer jede Karte gemeldet, außer er hat die Erinnerungen ausgeschaltet. So verhält sich auch Deck selbst.
+
+Das gilt genauso für Workflows mit Startdatum. Deck hat für das Startdatum keine eigene Benachrichtigungseinstellung.
+
+### Wie?
+
+| Einstellung | Was kommt an? |
+| --- | --- |
+| **E-Mail** (Standard) | eine Sammel-E-Mail pro Durchlauf |
+| **Nextcloud-Benachrichtigung (Push)** | eine Benachrichtigung pro Karte in der Glocke oben rechts und als Push-Nachricht in den Nextcloud-Apps auf Handy und Desktop |
+| **E-Mail und Nextcloud-Benachrichtigung** | beides |
+
+Die Empfänger sind in allen drei Fällen dieselben.
+
+**Inhalt der E-Mail:** Jeder Empfänger bekommt pro Durchlauf höchstens **eine** E-Mail, auch wenn mehrere Karten verschoben wurden. Pro Karte steht darin ein Satz wie:
+
+> „Essensvorräte prüfen“ (Board „Persönlich“) ist überfällig und wurde von „Waiting / Blocked“ nach „Work in Progress / ToDo“ verschoben.
+
+Bei Workflows mit Startdatum heißt es stattdessen:
+
+> „Essensvorräte prüfen“ (Board „Persönlich“) hat ihr Startdatum erreicht und wurde von „Geplant“ nach „In Arbeit“ verschoben.
+
+Der Kartentitel ist ein Link direkt zur Karte in Deck. Die Kartenbeschreibung wird nicht mitgeschickt.
+
+**Inhalt der Nextcloud-Benachrichtigung:** „*Kartentitel* wurde nach *Ziel-Stapel* verschoben“, darunter Board, Quell-Stapel und ob die Karte überfällig ist oder ihr Startdatum erreicht hat. Ein Klick öffnet die Karte. Wird dieselbe Karte später noch einmal verschoben, ersetzt die neue Benachrichtigung die alte.
+
+**Keine E-Mail erhalten?**
+- Ist in deinem Nextcloud-Profil eine E-Mail-Adresse hinterlegt? Ohne Adresse wird die E-Mail übersprungen.
+- Welche Stufe und welcher Weg sind im Workflow eingestellt?
+- Bei „An Board-Mitglieder“: Was steht in Deck unter *Fälligkeitserinnerungen* für dieses Board?
+
+**Keine Push-Nachricht erhalten?**
+- Ist die App *Benachrichtigungen* aktiviert? Die Einstellungsseite weist darauf hin, wenn nicht.
+- Für Push aufs Handy muss dort die Nextcloud-App angemeldet sein und Benachrichtigungen erlauben.
+
+Deck schickt zusätzlich seine eigene Erinnerung, wenn eine Karte fällig wird. Sie kommt von Deck, nicht von dieser App, und lässt sich in Deck unter *Fälligkeitserinnerungen* abschalten.
+
+## Wenn Board oder Stapel gelöscht werden
+
+- **In der Übersicht** wird der Workflow rot markiert, zum Beispiel „Board nicht mehr vorhanden“ oder „Quell-Stapel nicht mehr vorhanden“.
+- **Beim nächsten Durchlauf** wird der Workflow automatisch deaktiviert. Der Eigentümer bekommt einmalig eine E-Mail und, wenn die App *Benachrichtigungen* aktiv ist, eine Nextcloud-Benachrichtigung. Das gilt unabhängig davon, was für verschobene Karten eingestellt ist. Danach kommt keine weitere Erinnerung.
+- **Schleifen aus älteren Workflows** (gespeichert vor der Schleifenprüfung) werden in der Übersicht rot markiert und beim Durchlauf übersprungen, bis du einen der Workflows änderst oder deaktivierst.
+- **Archivierte Boards** deaktivieren den Workflow nicht. Er bleibt gespeichert, wird aber in der Übersicht markiert („Board archiviert, wird übersprungen“) und verschiebt nichts, bis du das Board in Deck aus dem Archiv holst. Archivierte Boards lassen sich auch nicht auswählen. Beim Bearbeiten eines solchen Workflows musst du ein anderes Board wählen.
+- **Ist Deck vorübergehend nicht erreichbar**, passiert nichts: Der Workflow wird übersprungen und beim nächsten Durchlauf erneut versucht.
+
+Um einen deaktivierten Workflow wieder zu nutzen, stellst du ein vorhandenes Board und vorhandene Stapel ein und aktivierst ihn wieder.
+
+## Sprache
+
+Die App ist für den internen Einsatz gedacht und durchgehend **deutsch**: Oberfläche, Fehlermeldungen, E-Mails und Benachrichtigungen.
 
 ## Lizenz
 

appinfo/info.xml

@@ -4,43 +4,43 @@
     <id>workflow_deck_automation</id>
     <name lang="de">Deck Workflow-Automatisierung</name>
     <name lang="en">Deck Workflow Automation</name>
-    <summary lang="de">Verschiebt überfällige Deck-Karten automatisch anhand konfigurierbarer Regeln</summary>
-    <summary lang="en">Automatically moves overdue Deck cards based on configurable rules</summary>
+    <summary lang="de">Verschiebt Deck-Karten automatisch, sobald ihr Fälligkeits- oder Startdatum erreicht ist</summary>
+    <summary lang="en">Automatically moves Deck cards once their due date or start date is reached</summary>
     <description lang="de"><![CDATA[
-Diese App erlaubt es jedem Nutzer, in den persönlichen Einstellungen eigene Automatisierungs-Workflows für die Deck-App anzulegen:
+Diese App erlaubt es jedem Nutzer, in den persönlichen Einstellungen Automatisierungs-Workflows für seine eigenen Deck-Boards anzulegen:
 
 * Quell-Board und Quell-Stapel wählen
-* Ziel-Stapel wählen, in den überfällige Karten verschoben werden
-* optional nach zugewiesenen Benutzern filtern
-* optional nach Labels/Tags filtern
-* optional eine E-Mail-Benachrichtigung an sich selbst aktivieren
+* Ziel-Stapel wählen, in den die Karten verschoben werden
+* wählen, ob das Fälligkeitsdatum oder das Startdatum der Karte das Verschieben auslöst
+* optional benachrichtigen, per E-Mail und/oder als Nextcloud-Benachrichtigung (Push): nur sich selbst oder alle Board-Mitglieder gemäß ihrer Deck-Benachrichtigungseinstellung
 
-Ein Hintergrundjob prüft regelmäßig alle aktiven Workflows und verschiebt Karten, deren Fälligkeitsdatum überschritten wurde, ausschließlich über die internen PHP-Klassen der Deck-App (keine HTTP/OCS-Aufrufe).
+Ein Hintergrundjob prüft regelmäßig alle aktiven Workflows und verschiebt Karten, deren Fälligkeits- bzw. Startdatum erreicht wurde.
 ]]></description>
     <description lang="en"><![CDATA[
-This app lets every user configure their own Deck automation workflows from Personal settings:
+This app lets every user configure Deck automation workflows for the boards they own from Personal settings:
 
 * pick a source board and source stack
-* pick a destination stack overdue cards get moved to
-* optionally filter by assigned users
-* optionally filter by labels/tags
-* optionally enable an email notification to themselves
+* pick a destination stack the cards get moved to
+* choose whether the card's due date or start date triggers the move
+* optionally notify by email and/or Nextcloud notification (push): themselves only, or every board member according to their Deck notification setting
 
-A background job periodically evaluates all enabled workflows and moves cards whose due date has passed, using Deck's own internal PHP classes only (no HTTP/OCS calls).
+A background job periodically evaluates all enabled workflows and moves cards whose due date or start date has been reached.
 ]]></description>
-    <version>34.0.2</version>
+    <version>35.4.0</version>
     <licence>agpl</licence>
     <author mail="patrick@niebel.ing">Patrick Niebeling</author>
     <namespace>WorkflowDeckAutomation</namespace>
     <category>organization</category>
     <category>tools</category>
-    <bugs>https://github.com/pniebeling/workflow_deck_automation/issues</bugs>
+    <website>https://gitea.gnilebein.de/gnilebein/nextcloud-workflow-deck-automation</website>
+    <bugs>https://gitea.gnilebein.de/gnilebein/nextcloud-workflow-deck-automation/issues</bugs>
+    <repository type="git">https://gitea.gnilebein.de/gnilebein/nextcloud-workflow-deck-automation.git</repository>
     <dependencies>
         <php min-version="8.4" max-version="8.5"/>
         <database min-version="9.4">pgsql</database>
         <database>sqlite</database>
         <database min-version="8.0">mysql</database>
-        <nextcloud min-version="34" max-version="34"/>
+        <nextcloud min-version="35" max-version="35"/>
     </dependencies>
     <background-jobs>
         <job>OCA\WorkflowDeckAutomation\BackgroundJob\RunWorkflowsJob</job>

appinfo/routes.php

@@ -11,7 +11,5 @@ return [
 
 		['name' => 'workflow#boards', 'url' => '/api/v1/boards', 'verb' => 'GET'],
 		['name' => 'workflow#stacks', 'url' => '/api/v1/boards/{boardId}/stacks', 'verb' => 'GET'],
-		['name' => 'workflow#labels', 'url' => '/api/v1/boards/{boardId}/labels', 'verb' => 'GET'],
-		['name' => 'workflow#participants', 'url' => '/api/v1/boards/{boardId}/participants', 'verb' => 'GET'],
 	],
 ];

lib/AppInfo/Application.php

@@ -4,6 +4,7 @@ declare(strict_types=1);
 
 namespace OCA\WorkflowDeckAutomation\AppInfo;
 
+use OCA\WorkflowDeckAutomation\Notification\Notifier;
 use OCP\AppFramework\App;
 use OCP\AppFramework\Bootstrap\IBootContext;
 use OCP\AppFramework\Bootstrap\IBootstrap;
@@ -16,7 +17,13 @@ class Application extends App implements IBootstrap {
 		parent::__construct(self::APP_ID);
 	}
 
+	/**
+	 * Background job and settings are declared in info.xml; the notifier is
+	 * the one thing that has to be registered here. Without the
+	 * notifications app it is simply never asked.
+	 */
 	public function register(IRegistrationContext $context): void {
+		$context->registerNotifierService(Notifier::class);
 	}
 
 	public function boot(IBootContext $context): void {

lib/Controller/WorkflowController.php

@@ -8,6 +8,9 @@ use OCA\WorkflowDeckAutomation\Db\Workflow;
 use OCA\WorkflowDeckAutomation\Db\WorkflowMapper;
 use OCA\WorkflowDeckAutomation\Service\DeckIntegrationService;
 use OCA\WorkflowDeckAutomation\Service\DeckUnavailableException;
+use OCA\WorkflowDeckAutomation\Service\LoopDetector;
+use OCA\WorkflowDeckAutomation\Service\NotificationPolicy;
+use OCA\WorkflowDeckAutomation\Service\TriggerDate;
 use OCP\AppFramework\Db\DoesNotExistException;
 use OCP\AppFramework\Http;
 use OCP\AppFramework\Http\Attribute\NoAdminRequired;
@@ -33,46 +36,53 @@ class WorkflowController extends OCSController {
 	private function currentUserId(): string {
 		$user = $this->userSession->getUser();
 		if ($user === null) {
-			throw new OCSPreconditionFailedException('Not logged in');
+			throw new OCSPreconditionFailedException('Nicht angemeldet');
 		}
 		return $user->getUID();
 	}
 
+	/**
+	 * Every workflow on a board the user owns, no matter who created it: a
+	 * workflow belongs to its board's owner, and follows the board when
+	 * Deck transfers it.
+	 */
 	#[NoAdminRequired]
 	public function index(): DataResponse {
-		$workflows = $this->workflowMapper->findAllForUser($this->currentUserId());
-		return new DataResponse(array_map(static fn (Workflow $w) => $w->jsonSerialize(), $workflows));
+		$workflows = $this->workflowMapper->findAllForBoards($this->ownedBoardIds());
+
+		// validate() keeps new loops out, but workflows stored before that
+		// check can still form one; the runner skips them, the list says why.
+		$looping = LoopDetector::findLoopingWorkflows(LoopDetector::edgesOf(
+			array_filter($workflows, static fn (Workflow $w) => (bool)$w->getEnabled()),
+		));
+
+		return new DataResponse(array_map(
+			static fn (Workflow $w) => $w->jsonSerialize() + ['loop' => in_array((int)$w->getId(), $looping, true)],
+			$workflows,
+		));
 	}
 
-	/**
-	 * @param string[] $filterUserIds
-	 * @param int[] $filterLabelIds
-	 */
 	#[NoAdminRequired]
 	public function create(
 		string $title,
 		int $boardId,
 		int $sourceStackId,
 		int $targetStackId,
-		array $filterUserIds = [],
-		array $filterLabelIds = [],
-		bool $notifyEmail = false,
+		string $triggerDate = TriggerDate::DUE,
+		string $notifyMode = NotificationPolicy::MODE_OFF,
+		string $notifyChannel = NotificationPolicy::CHANNEL_MAIL,
 		bool $enabled = true,
 	): DataResponse {
-		$this->validate($title, $boardId, $sourceStackId, $targetStackId);
+		$this->validate(null, $title, $boardId, $sourceStackId, $targetStackId, $triggerDate, $notifyMode, $notifyChannel, $enabled);
 
 		$workflow = new Workflow();
 		$workflow->setUserId($this->currentUserId());
-		$this->applyFields($workflow, $title, $boardId, $sourceStackId, $targetStackId, $filterUserIds, $filterLabelIds, $notifyEmail, $enabled);
+		$this->applyFields($workflow, $title, $boardId, $sourceStackId, $targetStackId, $triggerDate, $notifyMode, $notifyChannel, $enabled);
 
 		$workflow = $this->workflowMapper->insert($workflow);
 		return new DataResponse($workflow->jsonSerialize(), Http::STATUS_CREATED);
 	}
 
-	/**
-	 * @param string[] $filterUserIds
-	 * @param int[] $filterLabelIds
-	 */
 	#[NoAdminRequired]
 	public function update(
 		int $id,
@@ -80,20 +90,18 @@ class WorkflowController extends OCSController {
 		int $boardId,
 		int $sourceStackId,
 		int $targetStackId,
-		array $filterUserIds = [],
-		array $filterLabelIds = [],
-		bool $notifyEmail = false,
+		string $triggerDate = TriggerDate::DUE,
+		string $notifyMode = NotificationPolicy::MODE_OFF,
+		string $notifyChannel = NotificationPolicy::CHANNEL_MAIL,
 		bool $enabled = true,
 	): DataResponse {
-		$this->validate($title, $boardId, $sourceStackId, $targetStackId);
+		$workflow = $this->findOwnWorkflow($id);
+		$this->validate($id, $title, $boardId, $sourceStackId, $targetStackId, $triggerDate, $notifyMode, $notifyChannel, $enabled);
 
-		try {
-			$workflow = $this->workflowMapper->findForUser($id, $this->currentUserId());
-		} catch (DoesNotExistException $e) {
-			throw new OCSNotFoundException('Workflow not found');
-		}
-
-		$this->applyFields($workflow, $title, $boardId, $sourceStackId, $targetStackId, $filterUserIds, $filterLabelIds, $notifyEmail, $enabled);
+		// Kept in step with the board owner so the job runs as, and mails,
+		// the right user; validate() made sure the editor owns the board.
+		$workflow->setUserId($this->currentUserId());
+		$this->applyFields($workflow, $title, $boardId, $sourceStackId, $targetStackId, $triggerDate, $notifyMode, $notifyChannel, $enabled);
 		$workflow = $this->workflowMapper->update($workflow);
 
 		return new DataResponse($workflow->jsonSerialize());
@@ -101,12 +109,7 @@ class WorkflowController extends OCSController {
 
 	#[NoAdminRequired]
 	public function destroy(int $id): DataResponse {
-		try {
-			$workflow = $this->workflowMapper->findForUser($id, $this->currentUserId());
-		} catch (DoesNotExistException $e) {
-			throw new OCSNotFoundException('Workflow not found');
-		}
-
+		$workflow = $this->findOwnWorkflow($id);
 		$this->workflowMapper->delete($workflow);
 		return new DataResponse([]);
 	}
@@ -114,7 +117,7 @@ class WorkflowController extends OCSController {
 	#[NoAdminRequired]
 	public function boards(): DataResponse {
 		$this->assertDeck();
-		return new DataResponse($this->deckService->listBoardsForCurrentUser());
+		return new DataResponse($this->ownedBoards());
 	}
 
 	#[NoAdminRequired]
@@ -123,36 +126,70 @@ class WorkflowController extends OCSController {
 		return new DataResponse($this->deckService->listStacks($boardId));
 	}
 
-	#[NoAdminRequired]
-	public function labels(int $boardId): DataResponse {
-		$this->assertDeck();
-		return new DataResponse($this->deckService->listLabels($boardId));
+	private function findOwnWorkflow(int $id): Workflow {
+		try {
+			$workflow = $this->workflowMapper->findById($id);
+		} catch (DoesNotExistException $e) {
+			throw new OCSNotFoundException('Workflow nicht gefunden');
 		}
 
-	#[NoAdminRequired]
-	public function participants(int $boardId): DataResponse {
+		if (!in_array($workflow->getBoardId(), $this->ownedBoardIds(), true)) {
+			// Same answer as for a missing id: don't reveal other users' workflows.
+			throw new OCSNotFoundException('Workflow nicht gefunden');
+		}
+		return $workflow;
+	}
+
+	/**
+	 * @return array<int, array{id: int, title: string, archived: bool}>
+	 */
+	private function ownedBoards(): array {
+		$userId = $this->currentUserId();
 		$this->assertDeck();
-		return new DataResponse($this->deckService->listParticipants($boardId));
+		try {
+			return $this->deckService->listOwnedBoards($userId);
+		} catch (DeckUnavailableException $e) {
+			throw new OCSPreconditionFailedException('Deine Deck-Boards konnten nicht geladen werden: ' . $e->getMessage());
+		}
+	}
+
+	/**
+	 * @return int[]
+	 */
+	private function ownedBoardIds(): array {
+		return array_map(static fn (array $board) => $board['id'], $this->ownedBoards());
 	}
 
 	private function assertDeck(): void {
 		$user = $this->userSession->getUser();
 		if ($user === null) {
-			throw new OCSPreconditionFailedException('Not logged in');
+			throw new OCSPreconditionFailedException('Nicht angemeldet');
 		}
 		try {
 			$this->deckService->assertDeckAvailable($user);
 		} catch (DeckUnavailableException $e) {
-			throw new OCSPreconditionFailedException('Deck is not available: ' . $e->getMessage());
+			throw new OCSPreconditionFailedException('Deck ist nicht verfügbar: ' . $e->getMessage());
 		}
 	}
 
-	private function validate(string $title, int $boardId, int $sourceStackId, int $targetStackId): void {
+	/**
+	 * @param ?int $id the workflow being changed, `null` for a new one
+	 */
+	private function validate(?int $id, string $title, int $boardId, int $sourceStackId, int $targetStackId, string $triggerDate, string $notifyMode, string $notifyChannel, bool $enabled): void {
 		if (trim($title) === '') {
-			throw new OCSBadRequestException('Title must not be empty');
+			throw new OCSBadRequestException('Bitte einen Titel angeben.');
 		}
 		if ($sourceStackId === $targetStackId) {
-			throw new OCSBadRequestException('Source and target stack must differ');
+			throw new OCSBadRequestException('Quell- und Ziel-Stapel müssen sich unterscheiden.');
+		}
+		if (!TriggerDate::isValid($triggerDate)) {
+			throw new OCSBadRequestException('Ungültiges Datum für die Verschiebung, erlaubt sind: ' . implode(', ', TriggerDate::ALL));
+		}
+		if (!NotificationPolicy::isValidMode($notifyMode)) {
+			throw new OCSBadRequestException('Ungültige Benachrichtigungs-Einstellung, erlaubt sind: ' . implode(', ', NotificationPolicy::MODES));
+		}
+		if (!NotificationPolicy::isValidChannel($notifyChannel)) {
+			throw new OCSBadRequestException('Ungültiger Benachrichtigungsweg, erlaubt sind: ' . implode(', ', NotificationPolicy::CHANNELS));
 		}
 
 		// Reject references to boards or stacks that are gone (or were never
@@ -160,13 +197,22 @@ class WorkflowController extends OCSController {
 		// assertDeck() ran first, so an empty list here means "not there",
 		// not "Deck is unreachable".
 		$this->assertDeck();
+		if ($triggerDate === TriggerDate::START && !$this->deckService->supportsStartdate()) {
+			throw new OCSBadRequestException('Die installierte Deck-Version kennt kein Startdatum.');
+		}
 
-		$boardIds = array_map(
-			static fn (array $board) => (int)$board['id'],
-			$this->deckService->listBoardsForCurrentUser(),
-		);
-		if (!in_array($boardId, $boardIds, true)) {
-			throw new OCSBadRequestException('The selected board does not exist or is not accessible');
+		// Only boards the user owns are listed, so this also enforces the
+		// owner rule. Archived boards stay listed (their workflows must stay
+		// visible) but are no target for a new or changed workflow.
+		$board = null;
+		foreach ($this->ownedBoards() as $candidate) {
+			if ($candidate['id'] === $boardId) {
+				$board = $candidate;
+				break;
+			}
+		}
+		if ($board === null || $board['archived']) {
+			throw new OCSBadRequestException('Das gewählte Board existiert nicht, ist archiviert oder gehört dir nicht.');
 		}
 
 		$stackIds = array_map(
@@ -174,32 +220,59 @@ class WorkflowController extends OCSController {
 			$this->deckService->listStacks($boardId),
 		);
 		if (!in_array($sourceStackId, $stackIds, true) || !in_array($targetStackId, $stackIds, true)) {
-			throw new OCSBadRequestException('The selected stack does not exist on this board');
+			throw new OCSBadRequestException('Der gewählte Stapel existiert auf diesem Board nicht.');
+		}
+
+		// A disabled workflow moves nothing and can close no loop; it is
+		// checked again when it gets switched on, which also goes through here.
+		if ($enabled) {
+			$this->assertNoLoop($id, $boardId, $sourceStackId, $targetStackId);
 		}
 	}
 
 	/**
-	 * @param string[] $filterUserIds
-	 * @param int[] $filterLabelIds
+	 * Rejects a workflow whose target stack leads back to its source through
+	 * the board's other enabled workflows — cards would circle forever. See
+	 * LoopDetector.
 	 */
+	private function assertNoLoop(?int $id, int $boardId, int $sourceStackId, int $targetStackId): void {
+		$others = [];
+		foreach ($this->workflowMapper->findAllForBoards([$boardId]) as $other) {
+			if ($other->getId() !== $id && $other->getEnabled()) {
+				$others[(int)$other->getId()] = $other;
+			}
+		}
+
+		$path = LoopDetector::findPath(LoopDetector::edgesOf($others), $targetStackId, $sourceStackId);
+		if ($path === null) {
+			return;
+		}
+
+		$titles = array_map(static fn (int $otherId) => '„' . $others[$otherId]->getTitle() . '“', $path);
+		throw new OCSBadRequestException(sprintf(
+			'Zusammen mit %s würde dieser Workflow eine Schleife bilden, in der Karten immer wieder hin- und hergeschoben werden. Wähle einen anderen Ziel-Stapel oder deaktiviere einen der Workflows.',
+			implode(', ', $titles),
+		));
+	}
+
 	private function applyFields(
 		Workflow $workflow,
 		string $title,
 		int $boardId,
 		int $sourceStackId,
 		int $targetStackId,
-		array $filterUserIds,
-		array $filterLabelIds,
-		bool $notifyEmail,
+		string $triggerDate,
+		string $notifyMode,
+		string $notifyChannel,
 		bool $enabled,
 	): void {
 		$workflow->setTitle($title);
 		$workflow->setBoardId($boardId);
 		$workflow->setSourceStackId($sourceStackId);
 		$workflow->setTargetStackId($targetStackId);
-		$workflow->setFilterUserIds($filterUserIds === [] ? null : json_encode(array_values($filterUserIds)));
-		$workflow->setFilterLabelIds($filterLabelIds === [] ? null : json_encode(array_values($filterLabelIds)));
-		$workflow->setNotifyEmail($notifyEmail);
+		$workflow->setTriggerDate($triggerDate);
+		$workflow->setNotifyMode($notifyMode);
+		$workflow->setNotifyChannel($notifyChannel);
 		$workflow->setEnabled($enabled);
 	}
 }

lib/Db/Workflow.php

@@ -18,12 +18,12 @@ use OCP\DB\Types;
  * @method void setSourceStackId(int $sourceStackId)
  * @method int getTargetStackId()
  * @method void setTargetStackId(int $targetStackId)
- * @method string|null getFilterUserIds()
- * @method void setFilterUserIds(?string $filterUserIds)
- * @method string|null getFilterLabelIds()
- * @method void setFilterLabelIds(?string $filterLabelIds)
- * @method bool getNotifyEmail()
- * @method void setNotifyEmail(bool $notifyEmail)
+ * @method string getTriggerDate()
+ * @method void setTriggerDate(string $triggerDate)
+ * @method string getNotifyMode()
+ * @method void setNotifyMode(string $notifyMode)
+ * @method string getNotifyChannel()
+ * @method void setNotifyChannel(string $notifyChannel)
  * @method bool getEnabled()
  * @method void setEnabled(bool $enabled)
  * @method \DateTime|null getLastRun()
@@ -35,9 +35,9 @@ class Workflow extends Entity implements \JsonSerializable {
 	protected $boardId;
 	protected $sourceStackId;
 	protected $targetStackId;
-	protected $filterUserIds;
-	protected $filterLabelIds;
-	protected $notifyEmail;
+	protected $triggerDate;
+	protected $notifyMode;
+	protected $notifyChannel;
 	protected $enabled;
 	protected $lastRun;
 
@@ -48,38 +48,13 @@ class Workflow extends Entity implements \JsonSerializable {
 		$this->addType('boardId', Types::INTEGER);
 		$this->addType('sourceStackId', Types::INTEGER);
 		$this->addType('targetStackId', Types::INTEGER);
-		$this->addType('filterUserIds', Types::STRING);
-		$this->addType('filterLabelIds', Types::STRING);
-		$this->addType('notifyEmail', Types::BOOLEAN);
+		$this->addType('triggerDate', Types::STRING);
+		$this->addType('notifyMode', Types::STRING);
+		$this->addType('notifyChannel', Types::STRING);
 		$this->addType('enabled', Types::BOOLEAN);
 		$this->addType('lastRun', Types::DATETIME);
 	}
 
-	/**
-	 * @return string[]
-	 */
-	public function getFilterUserIdsArray(): array {
-		return $this->decodeIds($this->getFilterUserIds());
-	}
-
-	/**
-	 * @return int[]
-	 */
-	public function getFilterLabelIdsArray(): array {
-		return array_map('intval', $this->decodeIds($this->getFilterLabelIds()));
-	}
-
-	/**
-	 * @return string[]
-	 */
-	private function decodeIds(?string $json): array {
-		if ($json === null || $json === '') {
-			return [];
-		}
-		$decoded = json_decode($json, true);
-		return is_array($decoded) ? array_values($decoded) : [];
-	}
-
 	public function jsonSerialize(): array {
 		return [
 			'id' => $this->getId(),
@@ -88,9 +63,9 @@ class Workflow extends Entity implements \JsonSerializable {
 			'boardId' => $this->getBoardId(),
 			'sourceStackId' => $this->getSourceStackId(),
 			'targetStackId' => $this->getTargetStackId(),
-			'filterUserIds' => $this->getFilterUserIdsArray(),
-			'filterLabelIds' => $this->getFilterLabelIdsArray(),
-			'notifyEmail' => (bool)$this->getNotifyEmail(),
+			'triggerDate' => (string)$this->getTriggerDate(),
+			'notifyMode' => (string)$this->getNotifyMode(),
+			'notifyChannel' => (string)$this->getNotifyChannel(),
 			'enabled' => (bool)$this->getEnabled(),
 			'lastRun' => $this->getLastRun()?->format(\DateTimeInterface::ATOM),
 		];

lib/Db/WorkflowMapper.php

@@ -22,24 +22,27 @@ class WorkflowMapper extends QBMapper {
 	 * @throws DoesNotExistException
 	 * @throws MultipleObjectsReturnedException
 	 */
-	public function findForUser(int $id, string $userId): Workflow {
+	public function findById(int $id): Workflow {
 		$qb = $this->db->getQueryBuilder();
 		$qb->select('*')
 			->from($this->getTableName())
-			->where($qb->expr()->eq('id', $qb->createNamedParameter($id, IQueryBuilder::PARAM_INT)))
-			->andWhere($qb->expr()->eq('user_id', $qb->createNamedParameter($userId)));
+			->where($qb->expr()->eq('id', $qb->createNamedParameter($id, IQueryBuilder::PARAM_INT)));
 
 		return $this->findEntity($qb);
 	}
 
 	/**
+	 * @param int[] $boardIds
 	 * @return Workflow[]
 	 */
-	public function findAllForUser(string $userId): array {
+	public function findAllForBoards(array $boardIds): array {
+		if ($boardIds === []) {
+			return [];
+		}
 		$qb = $this->db->getQueryBuilder();
 		$qb->select('*')
 			->from($this->getTableName())
-			->where($qb->expr()->eq('user_id', $qb->createNamedParameter($userId)))
+			->where($qb->expr()->in('board_id', $qb->createNamedParameter($boardIds, IQueryBuilder::PARAM_INT_ARRAY)))
 			->orderBy('id', 'ASC');
 
 		return $this->findEntities($qb);

lib/Migration/Version1001Date20260930120000.php

@@ -0,0 +1,40 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OCA\WorkflowDeckAutomation\Migration;
+
+use Closure;
+use OCP\DB\ISchemaWrapper;
+use OCP\Migration\IOutput;
+use OCP\Migration\SimpleMigrationStep;
+
+/**
+ * Drops the assigned-user and label filters. Workflows that had one keep
+ * running, now unfiltered — that was an explicit product decision.
+ *
+ * The columns have to go rather than just be ignored: Entity::fromRow()
+ * calls a setter for every selected column, and the Workflow entity no
+ * longer has these properties.
+ */
+class Version1001Date20260930120000 extends SimpleMigrationStep {
+	public function changeSchema(IOutput $output, Closure $schemaClosure, array $options): ?ISchemaWrapper {
+		/** @var ISchemaWrapper $schema */
+		$schema = $schemaClosure();
+
+		if (!$schema->hasTable('wfda_workflows')) {
+			return null;
+		}
+
+		$table = $schema->getTable('wfda_workflows');
+		$changed = false;
+		foreach (['filter_user_ids', 'filter_label_ids'] as $column) {
+			if ($table->hasColumn($column)) {
+				$table->dropColumn($column);
+				$changed = true;
+			}
+		}
+
+		return $changed ? $schema : null;
+	}
+}

lib/Migration/Version1002Date20261001120000.php

@@ -0,0 +1,64 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OCA\WorkflowDeckAutomation\Migration;
+
+use Closure;
+use OCP\DB\ISchemaWrapper;
+use OCP\DB\QueryBuilder\IQueryBuilder;
+use OCP\DB\Types;
+use OCP\IDBConnection;
+use OCP\Migration\IOutput;
+use OCP\Migration\SimpleMigrationStep;
+
+/**
+ * Replaces the yes/no `notify_email` flag with `notify_mode`
+ * (off / owner / board, see NotificationPolicy::MODES).
+ *
+ * Existing workflows keep behaving exactly as before: a set flag becomes
+ * `owner` — the only recipient the flag ever had — everything else `off`.
+ * The old column is dropped by the next step, once the values are copied.
+ */
+class Version1002Date20261001120000 extends SimpleMigrationStep {
+	public function __construct(
+		private IDBConnection $db,
+	) {
+	}
+
+	public function changeSchema(IOutput $output, Closure $schemaClosure, array $options): ?ISchemaWrapper {
+		/** @var ISchemaWrapper $schema */
+		$schema = $schemaClosure();
+
+		if (!$schema->hasTable('wfda_workflows')) {
+			return null;
+		}
+
+		$table = $schema->getTable('wfda_workflows');
+		if ($table->hasColumn('notify_mode')) {
+			return null;
+		}
+
+		$table->addColumn('notify_mode', Types::STRING, [
+			'notnull' => true,
+			'length' => 16,
+			'default' => 'off',
+		]);
+
+		return $schema;
+	}
+
+	public function postSchemaChange(IOutput $output, Closure $schemaClosure, array $options): void {
+		/** @var ISchemaWrapper $schema */
+		$schema = $schemaClosure();
+		if (!$schema->hasTable('wfda_workflows') || !$schema->getTable('wfda_workflows')->hasColumn('notify_email')) {
+			return;
+		}
+
+		$qb = $this->db->getQueryBuilder();
+		$qb->update('wfda_workflows')
+			->set('notify_mode', $qb->createNamedParameter('owner'))
+			->where($qb->expr()->eq('notify_email', $qb->createNamedParameter(true, IQueryBuilder::PARAM_BOOL)));
+		$qb->executeStatement();
+	}
+}

lib/Migration/Version1003Date20261001120100.php

@@ -0,0 +1,34 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OCA\WorkflowDeckAutomation\Migration;
+
+use Closure;
+use OCP\DB\ISchemaWrapper;
+use OCP\Migration\IOutput;
+use OCP\Migration\SimpleMigrationStep;
+
+/**
+ * Drops `notify_email` now that Version1002Date20261001120000 has copied it
+ * into `notify_mode`. It has to go rather than be ignored: Entity::fromRow()
+ * calls a setter per selected column, and Workflow no longer has one.
+ */
+class Version1003Date20261001120100 extends SimpleMigrationStep {
+	public function changeSchema(IOutput $output, Closure $schemaClosure, array $options): ?ISchemaWrapper {
+		/** @var ISchemaWrapper $schema */
+		$schema = $schemaClosure();
+
+		if (!$schema->hasTable('wfda_workflows')) {
+			return null;
+		}
+
+		$table = $schema->getTable('wfda_workflows');
+		if (!$table->hasColumn('notify_email')) {
+			return null;
+		}
+
+		$table->dropColumn('notify_email');
+		return $schema;
+	}
+}

lib/Migration/Version1004Date20261002120000.php

@@ -0,0 +1,41 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OCA\WorkflowDeckAutomation\Migration;
+
+use Closure;
+use OCP\DB\ISchemaWrapper;
+use OCP\DB\Types;
+use OCP\Migration\IOutput;
+use OCP\Migration\SimpleMigrationStep;
+
+/**
+ * Adds `notify_channel` (mail / notification / both, see
+ * NotificationPolicy::CHANNELS): how the recipients chosen by `notify_mode`
+ * hear about moved cards. Existing workflows get `mail`, the only channel
+ * there was, so nothing changes for them.
+ */
+class Version1004Date20261002120000 extends SimpleMigrationStep {
+	public function changeSchema(IOutput $output, Closure $schemaClosure, array $options): ?ISchemaWrapper {
+		/** @var ISchemaWrapper $schema */
+		$schema = $schemaClosure();
+
+		if (!$schema->hasTable('wfda_workflows')) {
+			return null;
+		}
+
+		$table = $schema->getTable('wfda_workflows');
+		if ($table->hasColumn('notify_channel')) {
+			return null;
+		}
+
+		$table->addColumn('notify_channel', Types::STRING, [
+			'notnull' => true,
+			'length' => 16,
+			'default' => 'mail',
+		]);
+
+		return $schema;
+	}
+}

lib/Migration/Version1005Date20261003120000.php

@@ -0,0 +1,41 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OCA\WorkflowDeckAutomation\Migration;
+
+use Closure;
+use OCP\DB\ISchemaWrapper;
+use OCP\DB\Types;
+use OCP\Migration\IOutput;
+use OCP\Migration\SimpleMigrationStep;
+
+/**
+ * Adds `trigger_date` (due / start, see TriggerDate::ALL): whether a card
+ * moves once its due date or once its start date is reached. Existing
+ * workflows get `due`, the only trigger there was, so nothing changes for
+ * them.
+ */
+class Version1005Date20261003120000 extends SimpleMigrationStep {
+	public function changeSchema(IOutput $output, Closure $schemaClosure, array $options): ?ISchemaWrapper {
+		/** @var ISchemaWrapper $schema */
+		$schema = $schemaClosure();
+
+		if (!$schema->hasTable('wfda_workflows')) {
+			return null;
+		}
+
+		$table = $schema->getTable('wfda_workflows');
+		if ($table->hasColumn('trigger_date')) {
+			return null;
+		}
+
+		$table->addColumn('trigger_date', Types::STRING, [
+			'notnull' => true,
+			'length' => 16,
+			'default' => 'due',
+		]);
+
+		return $schema;
+	}
+}

lib/Notification/Notifier.php

@@ -0,0 +1,152 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OCA\WorkflowDeckAutomation\Notification;
+
+use OCA\WorkflowDeckAutomation\AppInfo\Application;
+use OCA\WorkflowDeckAutomation\Service\NotificationMailer;
+use OCA\WorkflowDeckAutomation\Service\NotificationPusher;
+use OCA\WorkflowDeckAutomation\Service\TriggerDate;
+use OCP\IURLGenerator;
+use OCP\Notification\INotification;
+use OCP\Notification\INotifier;
+use OCP\Notification\UnknownNotificationException;
+
+/**
+ * Turns the values NotificationPusher stored into text. German only, like
+ * the rest of the app — the language Nextcloud asks for is ignored.
+ *
+ * Deliberately asks Deck nothing: the stored titles are the ones from the
+ * moment the card moved, and a Deck lookup here would run as whoever
+ * happens to fetch notifications (see CLAUDE.md on Deck's frozen uid).
+ */
+class Notifier implements INotifier {
+	public function __construct(
+		private IURLGenerator $urlGenerator,
+	) {
+	}
+
+	public function getID(): string {
+		return Application::APP_ID;
+	}
+
+	public function getName(): string {
+		return 'Deck Workflow-Automatisierung';
+	}
+
+	public function prepare(INotification $notification, string $languageCode): INotification {
+		if ($notification->getApp() !== Application::APP_ID) {
+			throw new UnknownNotificationException();
+		}
+
+		$notification->setIcon($this->urlGenerator->getAbsoluteURL($this->urlGenerator->imagePath(Application::APP_ID, 'app-dark.svg')));
+		$params = $notification->getSubjectParameters();
+
+		switch ($notification->getSubject()) {
+			case NotificationPusher::SUBJECT_CARD_MOVED:
+				$this->prepareCardMoved($notification, $params);
+				return $notification;
+			case NotificationPusher::SUBJECT_WORKFLOW_DISABLED:
+				$this->prepareWorkflowDisabled($notification, $params);
+				return $notification;
+			default:
+				throw new UnknownNotificationException();
+		}
+	}
+
+	private function prepareCardMoved(INotification $notification, array $params): void {
+		$cardId = $notification->getObjectId();
+		$boardId = (string)($params['boardId'] ?? '');
+		$boardTitle = (string)($params['boardTitle'] ?? '');
+		$targetStackTitle = (string)($params['targetStackTitle'] ?? '');
+		$cardUrl = $this->urlGenerator->getAbsoluteURL('/apps/deck/board/' . $boardId . '/card/' . $cardId);
+
+		// Every title is user input and goes in as a rich object, never into
+		// the template itself — a title containing "{…}" would otherwise be
+		// read as a placeholder.
+		$objects = [
+			'deck-card' => [
+				'type' => 'deck-card',
+				'id' => $cardId,
+				'name' => (string)($params['cardTitle'] ?? ''),
+				'boardname' => $boardTitle,
+				'stackname' => $targetStackTitle,
+				'link' => $cardUrl,
+			],
+			'deck-board' => [
+				'type' => 'deck-board',
+				'id' => $boardId,
+				'name' => $boardTitle,
+				'link' => $this->urlGenerator->getAbsoluteURL('/apps/deck/board/' . $boardId),
+			],
+			'source-stack' => [
+				'type' => 'highlight',
+				'id' => (string)($params['sourceStackId'] ?? ''),
+				'name' => (string)($params['sourceStackTitle'] ?? ''),
+			],
+			'target-stack' => [
+				'type' => 'highlight',
+				'id' => (string)($params['targetStackId'] ?? ''),
+				'name' => $targetStackTitle,
+			],
+		];
+
+		$notification->setLink($cardUrl);
+		self::setText(
+			$notification,
+			'{deck-card} wurde nach {target-stack} verschoben',
+			sprintf(
+				'Die Karte auf {deck-board} %s und wurde automatisch von {source-stack} nach {target-stack} verschoben.',
+				// Missing on notifications from before the start date existed,
+				// which were all about due dates.
+				TriggerDate::describeReason((string)($params['triggerDate'] ?? TriggerDate::DUE)),
+			),
+			$objects,
+		);
+	}
+
+	private function prepareWorkflowDisabled(INotification $notification, array $params): void {
+		$settingsUrl = $this->urlGenerator->getAbsoluteURL('/settings/user/' . Application::APP_ID);
+
+		$objects = [
+			'workflow' => [
+				'type' => 'highlight',
+				'id' => $notification->getObjectId(),
+				'name' => (string)($params['workflowTitle'] ?? ''),
+				'link' => $settingsUrl,
+			],
+		];
+
+		$notification->setLink($settingsUrl);
+		self::setText(
+			$notification,
+			'Workflow {workflow} wurde deaktiviert',
+			sprintf(
+				'Er wurde automatisch ausgeschaltet, weil %s, und verschiebt keine Karten mehr. Lösche ihn oder stelle ein vorhandenes Board und vorhandene Stapel ein, um ihn wieder zu aktivieren.',
+				NotificationMailer::describeBrokenTarget((string)($params['brokenTarget'] ?? '')),
+			),
+			$objects,
+		);
+	}
+
+	/**
+	 * Sets the rich texts and their plain fallback (used by clients without
+	 * rich text support), with titles in German quotes there.
+	 *
+	 * @param array<string, array{name: string}> $objects
+	 */
+	private static function setText(INotification $notification, string $subject, string $message, array $objects): void {
+		$plain = [];
+		foreach ($objects as $key => $object) {
+			$plain['{' . $key . '}'] = '„' . $object['name'] . '“';
+		}
+
+		// strtr() replaces in a single pass, so a title that itself contains
+		// a placeholder is left as it is.
+		$notification->setParsedSubject(strtr($subject, $plain))
+			->setRichSubject($subject, $objects)
+			->setParsedMessage(strtr($message, $plain))
+			->setRichMessage($message, $objects);
+	}
+}

lib/Service/DeckIntegrationService.php

@@ -4,6 +4,7 @@ declare(strict_types=1);
 
 namespace OCA\WorkflowDeckAutomation\Service;
 
+use OCA\Deck\Db\AssignmentMapper;
 use OCA\Deck\Db\BoardMapper;
 use OCA\Deck\Db\Card;
 use OCA\Deck\Db\CardMapper;
@@ -14,9 +15,8 @@ use OCA\Deck\Service\PermissionService;
 use OCA\Deck\Service\StackService;
 use OCP\App\IAppManager;
 use OCP\AppFramework\Db\DoesNotExistException;
-use OCP\IGroupManager;
+use OCP\IConfig;
 use OCP\IUser;
-use OCP\IUserManager;
 use OCP\Server;
 use Psr\Log\LoggerInterface;
 use ReflectionProperty;
@@ -36,16 +36,9 @@ class DeckIntegrationService {
 	private const DECK_APP_ID = 'deck';
 
 	/**
-	 * Deck's Acl::PERMISSION_TYPE_* values, inlined so this class keeps
-	 * working (degrading to "treat it as a user") if Deck ever moves or
-	 * renames the constants.
-	 */
-	private const ACL_TYPE_USER = 0;
-	private const ACL_TYPE_GROUP = 1;
-
-	/**
-	 * Deck's Acl::PERMISSION_READ, inlined for the same reason. It is the key
-	 * under which PermissionService::getPermissions() reports read access.
+	 * Deck's Acl::PERMISSION_READ, inlined so a moved or renamed constant
+	 * cannot fatal this class. It is the key under which
+	 * PermissionService::getPermissions() reports read access.
 	 */
 	private const ACL_PERMISSION_READ = 0;
 
@@ -75,8 +68,7 @@ class DeckIntegrationService {
 
 	public function __construct(
 		private IAppManager $appManager,
-		private IUserManager $userManager,
-		private IGroupManager $groupManager,
+		private IConfig $config,
 		private LoggerInterface $logger,
 	) {
 	}
@@ -172,55 +164,74 @@ class DeckIntegrationService {
 	}
 
 	/**
-	 * @return array<int, array{id: int, title: string}>
-	 *
-	 * Only ever call this from a *request*: getUserBoards() reads the uid
-	 * BoardService froze at construction time, and beginUserContext() cannot
-	 * help here — it repoints that field, but Deck may already have cached
-	 * board lists behind it, and the job has no use for a board *list*
-	 * anyway. It asks findStackIds() about one known board id instead.
+	 * Whether Deck's cards carry a start date (`deck_cards.startdate`, added
+	 * in Deck 1.18). Checked on the property, not with method_exists():
+	 * Entity getters are magic, so getStartdate() would only fail when called.
 	 */
-	public function listBoardsForCurrentUser(): array {
-		$boards = $this->call(function () {
-			$boardService = $this->resolve(BoardService::class);
-			try {
-				// getUserBoards(?int $since, bool $includeArchived, …): with
-				// the default $includeArchived = true, Deck skips the
-				// `archived = false AND deleted_at = 0` conditions entirely,
-				// so archived *and* trashed boards come back. Ask for the
-				// filtered query instead of sorting them out afterwards.
-				return $boardService->getUserBoards(null, false);
-			} catch (Throwable $e) {
-				// Older/newer Deck with a different signature: fall back to
-				// the unfiltered call, isBoardHidden() below still filters.
-				return $boardService->getUserBoards();
+	public function supportsStartdate(): bool {
+		return class_exists(Card::class) && property_exists(Card::class, 'startdate');
 	}
-		}, []);
 
-		// Deck merges own/group/circle boards, so the same board can come
-		// back more than once; and boards in the trash or archived ones are
-		// no useful automation target. Keyed by id => deduplicated.
+	/**
+	 * Whether a Deck board or card sits in Deck's trash (`deleted_at > 0`).
+	 *
+	 * Read through property_exists(), never method_exists(): Entity getters
+	 * are magic (`__call`), so method_exists() is always false for them —
+	 * which is how trashed cards used to be moved and trashed boards went
+	 * unnoticed.
+	 */
+	private static function isTrashed(object $entity): bool {
+		return property_exists($entity, 'deletedAt') && (int)$entity->getDeletedAt() > 0;
+	}
+
+	/**
+	 * Whether a Deck board is archived. Same magic-getter caveat as
+	 * isTrashed().
+	 */
+	private static function isArchived(object $entity): bool {
+		return property_exists($entity, 'archived') && (bool)$entity->getArchived();
+	}
+
+	/**
+	 * The boards `$userId` owns — the only boards workflows may live on, and
+	 * the boards whose workflows that user sees and manages.
+	 *
+	 * One query: BoardMapper::findAllByOwner() is `WHERE owner = :uid`, so
+	 * shared boards never come back, and as a plain QBMapper it has none of
+	 * the frozen-uid state of BoardService::getUserBoards(). It does return
+	 * archived and trashed boards; trashed ones are dropped here, archived
+	 * ones are kept but flagged — their workflows still exist and must stay
+	 * visible, but the board is no target for a new or changed workflow, and
+	 * the runner skips it.
+	 *
+	 * Throws instead of degrading to `[]`: an empty list would read as "you
+	 * own no boards" and hide every workflow the user has.
+	 *
+	 * @return array<int, array{id: int, title: string, archived: bool}>
+	 * @throws DeckUnavailableException
+	 */
+	public function listOwnedBoards(string $userId): array {
+		$boards = $this->call(
+			fn () => $this->resolve(BoardMapper::class)->findAllByOwner($userId),
+			[],
+			true,
+		);
+
 		$result = [];
 		foreach ($boards as $board) {
-			$id = (int)$board->getId();
-			if (isset($result[$id]) || $this->isBoardHidden($board)) {
+			if (self::isTrashed($board)) {
 				continue;
 			}
+			$id = (int)$board->getId();
 			$title = $board->getTitle();
-			$result[$id] = [
+			$result[] = [
 				'id' => $id,
 				'title' => (is_string($title) && $title !== '') ? $title : ('#' . $id),
+				'archived' => self::isArchived($board),
 			];
 		}
 
-		return array_values($result);
-	}
-
-	private function isBoardHidden(mixed $board): bool {
-		if (method_exists($board, 'getDeletedAt') && (int)$board->getDeletedAt() > 0) {
-			return true;
-		}
-		return method_exists($board, 'getArchived') && $board->getArchived() === true;
+		return $result;
 	}
 
 	/**
@@ -263,7 +274,7 @@ class DeckIntegrationService {
 	public function findStackIds(int $boardId, string $userId): ?array {
 		try {
 			$board = $this->resolve(BoardMapper::class)->find($boardId);
-			if (method_exists($board, 'getDeletedAt') && (int)$board->getDeletedAt() > 0) {
+			if (self::isTrashed($board)) {
 				return null;
 			}
 
@@ -293,6 +304,137 @@ class DeckIntegrationService {
 		return array_map(static fn ($stack) => (int)$stack->getId(), $stacks);
 	}
 
+	/**
+	 * Whether the board is archived — workflows on archived boards stay
+	 * stored and enabled but move nothing until the board is unarchived.
+	 *
+	 * Read through BoardMapper like findBoardOwner(). `false` if the board
+	 * row is gone, so findBrokenTarget() still gets to disable the workflow;
+	 * every other failure throws.
+	 *
+	 * @throws DeckUnavailableException
+	 */
+	public function isBoardArchived(int $boardId): bool {
+		try {
+			$board = $this->resolve(BoardMapper::class)->find($boardId);
+		} catch (DeckUnavailableException $e) {
+			throw $e;
+		} catch (Throwable $e) {
+			if ($this->isMissing($e)) {
+				return false;
+			}
+			throw new DeckUnavailableException('Could not read board ' . $boardId . ': ' . $e->getMessage(), 0, $e);
+		}
+
+		return self::isArchived($board);
+	}
+
+	/**
+	 * The uid of the board's current owner — the user a workflow on that
+	 * board belongs to. Workflows follow the board: when Deck transfers its
+	 * ownership, they move to the new owner along with it.
+	 *
+	 * Read through BoardMapper, a plain QBMapper without user state, so it
+	 * answers the same in a request and in cron. Trashed and archived boards
+	 * still report their owner. `null` only if the board row is gone; every
+	 * other failure throws, like findStackIds().
+	 *
+	 * @throws DeckUnavailableException
+	 */
+	public function findBoardOwner(int $boardId): ?string {
+		try {
+			$board = $this->resolve(BoardMapper::class)->find($boardId);
+		} catch (DeckUnavailableException $e) {
+			throw $e;
+		} catch (Throwable $e) {
+			if ($this->isMissing($e)) {
+				return null;
+			}
+			throw new DeckUnavailableException('Could not read owner of board ' . $boardId . ': ' . $e->getMessage(), 0, $e);
+		}
+
+		$owner = $this->unwrapUid($board->getOwner());
+		if ($owner === null) {
+			throw new DeckUnavailableException('Board ' . $boardId . ' has no readable owner');
+		}
+		return $owner;
+	}
+
+	/**
+	 * Who should hear about each of the given (moved) cards, according to
+	 * every board member's own Deck notification setting for this board —
+	 * the "Notifications: none / assigned cards / all cards" menu, stored as
+	 * the user preference `deck` / `board:<id>:notify-due`. The decision
+	 * itself is NotificationPolicy::shouldNotify(), a copy of Deck's rules.
+	 *
+	 * Like findStackIds(), assembled only from pieces that take the users
+	 * explicitly and never consult Deck's frozen `$userId`:
+	 * PermissionService::findUsers() reads the owner and ACL through mappers
+	 * and expands groups and circles itself; AssignmentMapper is a plain
+	 * mapper that also resolves group/circle assignments; the preference is
+	 * read straight from IConfig.
+	 *
+	 * Throws on any failure, so the caller can log and skip the mail instead
+	 * of mailing a half-resolved or wrong set of people.
+	 *
+	 * @param int[] $cardIds
+	 * @return array<int, list<string>> card id => uids to notify
+	 * @throws DeckUnavailableException
+	 */
+	public function findNotificationRecipients(int $boardId, array $cardIds): array {
+		try {
+			$board = $this->resolve(BoardMapper::class)->find($boardId, false, true);
+			$owner = $this->unwrapUid($board->getOwner());
+			// Deck notifies the owner of a board nobody else can see about
+			// every card: "assigned" means nothing there.
+			$unshared = count($board->getAcl() ?? []) === 0;
+
+			// `true` bypasses PermissionService's per-process cache, which
+			// would otherwise outlive ACL changes for the whole cron pass.
+			$participants = $this->resolve(PermissionService::class)->findUsers($boardId, true);
+			$assignments = $this->resolve(AssignmentMapper::class);
+
+			$settings = [];
+			foreach ($participants as $uid => $participant) {
+				// Users of other instances (FederatedUser) have no local
+				// account and no preference to read.
+				if (!is_a($participant, 'OCA\Deck\Db\User')) {
+					continue;
+				}
+				// Numeric uids come back as integer array keys.
+				$uid = (string)$uid;
+				$settings[$uid] = (string)$this->config->getUserValue(
+					$uid,
+					self::DECK_APP_ID,
+					'board:' . $boardId . ':notify-due',
+					NotificationPolicy::DECK_DEFAULT,
+				);
+			}
+
+			$recipients = [];
+			foreach ($cardIds as $cardId) {
+				$recipients[$cardId] = [];
+				foreach ($settings as $uid => $setting) {
+					$uid = (string)$uid;
+					$notify = NotificationPolicy::shouldNotify(
+						$setting,
+						$unshared && $uid === $owner,
+						static fn (): bool => (bool)$assignments->isUserAssigned($cardId, $uid),
+					);
+					if ($notify) {
+						$recipients[$cardId][] = $uid;
+					}
+				}
+			}
+		} catch (DeckUnavailableException $e) {
+			throw $e;
+		} catch (Throwable $e) {
+			throw new DeckUnavailableException('Could not resolve notification recipients for board ' . $boardId . ': ' . $e->getMessage(), 0, $e);
+		}
+
+		return $recipients;
+	}
+
 	/**
 	 * Deck's own exception classes are referenced by name: `is_a()` with a
 	 * string simply returns false when the class does not exist, so a missing
@@ -311,51 +453,6 @@ class DeckIntegrationService {
 		return is_a($e, 'OCA\Deck\NotFoundException');
 	}
 
-	/**
-	 * @return array<int, array{id: int, title: string, color: string|null}>
-	 */
-	public function listLabels(int $boardId): array {
-		$labels = $this->call(fn () => $this->readLabels($boardId), []);
-
-		return array_map(
-			static fn ($label) => ['id' => (int)$label->getId(), 'title' => $label->getTitle(), 'color' => $label->getColor()],
-			$labels,
-		);
-	}
-
-	/**
-	 * What a workflow's filters *could* legitimately refer to on this board.
-	 *
-	 * Unlike listLabels()/listParticipants() this throws instead of degrading
-	 * to an empty list, because its only caller draws a conclusion from
-	 * emptiness ("this filter cannot match anything any more"). Same rule as
-	 * findStackIds(): a Deck hiccup must never be read as positive knowledge.
-	 *
-	 * @return array{labelIds: int[], participantUids: string[]}
-	 * @throws DeckUnavailableException
-	 */
-	public function findFilterOptions(int $boardId): array {
-		try {
-			$board = $this->readBoard($boardId);
-
-			return [
-				'labelIds' => array_map(
-					static fn ($label) => (int)$label->getId(),
-					$board->getLabels() ?? [],
-				),
-				'participantUids' => array_values(array_unique($this->collectParticipantUids($board))),
-			];
-		} catch (DeckUnavailableException $e) {
-			throw $e;
-		} catch (Throwable $e) {
-			$this->logger->error('Could not read filter options of board ' . $boardId . ': ' . $e->getMessage(), [
-				'app' => 'workflow_deck_automation',
-				'exception' => $e,
-			]);
-			throw new DeckUnavailableException('Deck call failed: ' . $e->getMessage(), 0, $e);
-		}
-	}
-
 	/**
 	 * Titles of a workflow's board and stacks, for the notification mail.
 	 *
@@ -389,85 +486,9 @@ class DeckIntegrationService {
 		return $title !== '' ? $title : ('#' . $id);
 	}
 
-	/**
-	 * Everyone who can hold a card on this board: the board owner (who is
-	 * *not* part of the ACL — a private board has an empty ACL) plus every
-	 * ACL entry, with group shares expanded to their members.
-	 *
-	 * @return array<int, array{uid: string, displayName: string}>
-	 */
-	public function listParticipants(int $boardId): array {
-		$uids = $this->call(fn () => $this->collectParticipantUids($this->readBoard($boardId)), []);
-
-		$participants = [];
-		foreach ($uids as $uid) {
-			if (isset($participants[$uid])) {
-				continue;
-			}
-			$participants[$uid] = [
-				'uid' => $uid,
-				'displayName' => $this->userManager->get($uid)?->getDisplayName() ?? $uid,
-			];
-		}
-
-		return array_values($participants);
-	}
-
-	/**
-	 * The enriched board — `$fullDetails = true` is what populates labels and
-	 * the ACL. Shared by every caller that needs one so a single Deck read
-	 * serves them all.
-	 */
-	private function readBoard(int $boardId): mixed {
-		return $this->resolve(BoardService::class)->find($boardId, true);
-	}
-
-	private function readLabels(int $boardId): array {
-		return $this->readBoard($boardId)->getLabels() ?? [];
-	}
-
-	/**
-	 * @return string[] may contain duplicates
-	 */
-	private function collectParticipantUids(mixed $board): array {
-		$uids = [];
-		$owner = $this->unwrapUid($board->getOwner());
-		if ($owner !== null) {
-			$uids[] = $owner;
-		}
-
-		foreach ($board->getAcl() ?? [] as $entry) {
-			$principal = $this->extractParticipantUid($entry);
-			if ($principal === null) {
-				continue;
-			}
-			$type = method_exists($entry, 'getType') ? (int)$entry->getType() : self::ACL_TYPE_USER;
-			if ($type === self::ACL_TYPE_GROUP) {
-				array_push($uids, ...$this->groupMemberUids($principal));
-			} elseif ($type === self::ACL_TYPE_USER) {
-				$uids[] = $principal;
-			}
-			// Circles and federated shares are skipped: their members
-			// cannot be resolved to plain uids here.
-		}
-
-		return $uids;
-	}
-
-	/**
-	 * @return string[]
-	 */
-	private function groupMemberUids(string $groupId): array {
-		$group = $this->groupManager->get($groupId);
-		if ($group === null) {
-			return [];
-		}
-		return array_map(static fn (IUser $user) => $user->getUID(), $group->getUsers());
-	}
-
 	/**
 	 * Cards in the given stack that are neither archived, deleted nor marked
-	 * done, enriched so getAssignedUsers()/getLabels() are populated.
+	 * done.
 	 *
 	 * The `deletedAt` check is not redundant: Deck's
 	 * `CardMapper::findAllByStack()` filters on `stack_id` and
@@ -479,20 +500,15 @@ class DeckIntegrationService {
 	 */
 	public function getActiveCardsInStack(int $stackId): array {
 		return $this->call(function () use ($stackId) {
-			$cardMapper = $this->resolve(CardMapper::class);
-			$cardService = $this->resolve(CardService::class);
-
-			$cards = $cardMapper->findAllByStack($stackId);
-			// enrichCards() mutates each $cards entry in place (labels, assigned users, ...) but
-			// *returns* CardDetails wrappers whose own fields (duedate, stackId, ...) were never
-			// copied from the wrapped card - only its overridden jsonSerialize() reads through to
-			// them. Capturing that return value here made every card's getDuedate()/getDaysUntilDue()
-			// resolve to null, so isOverdue() was always false and no workflow ever matched a card.
-			// Keep using the original, now-enriched $cards instead.
-			$cardService->enrichCards($cards);
+			// Deliberately not enriched: CardService::enrichCards() only adds
+			// labels, assignees and comment counts, and runs
+			// BoardService::find(), a permission check against Deck's frozen
+			// uid (see beginUserContext()). Assignments, where needed for
+			// mails, come from findNotificationRecipients() instead.
+			$cards = $this->resolve(CardMapper::class)->findAllByStack($stackId);
 
 			return array_values(array_filter($cards, static function (Card $card) {
-				if (method_exists($card, 'getDeletedAt') && (int)$card->getDeletedAt() > 0) {
+				if (self::isTrashed($card)) {
 					return false;
 				}
 				return !$card->getArchived() && $card->getDone() === null;
@@ -500,35 +516,6 @@ class DeckIntegrationService {
 		}, []);
 	}
 
-	/**
-	 * @return string[]
-	 */
-	public function getCardAssignedUserIds(Card $card): array {
-		$assigned = $card->getAssignedUsers() ?? [];
-		$uids = [];
-		foreach ($assigned as $entry) {
-			$uid = $this->extractParticipantUid($entry);
-			if ($uid !== null) {
-				$uids[] = $uid;
-			}
-		}
-		return $uids;
-	}
-
-	/**
-	 * @return int[]
-	 */
-	public function getCardLabelIds(Card $card): array {
-		$labels = $card->getLabels() ?? [];
-		$ids = [];
-		foreach ($labels as $label) {
-			if (method_exists($label, 'getId')) {
-				$ids[] = (int)$label->getId();
-			}
-		}
-		return $ids;
-	}
-
 	/**
 	 * Moves a card to another stack using Deck's own reorder logic
 	 * (the exact same code path behind Deck's "move card" action).
@@ -575,31 +562,6 @@ class DeckIntegrationService {
 		return Server::get($class);
 	}
 
-	/**
-	 * Deck's assignment/ACL entries are internal, undocumented value
-	 * objects whose exact accessor shape has changed across versions, so
-	 * we probe the common accessor names defensively instead of relying
-	 * on one fixed method signature.
-	 */
-	private function extractParticipantUid(mixed $entry): ?string {
-		$uid = $this->unwrapUid($entry);
-		if ($uid !== null) {
-			return $uid;
-		}
-		if (!is_object($entry)) {
-			return null;
-		}
-		foreach (['getParticipant', 'getUid', 'getParticipantUid', 'getUserId'] as $method) {
-			if (method_exists($entry, $method)) {
-				$uid = $this->unwrapUid($entry->$method());
-				if ($uid !== null) {
-					return $uid;
-				}
-			}
-		}
-		return null;
-	}
-
 	/**
 	 * Turns whatever Deck hands out for a "participant"/"owner" field into
 	 * a plain uid.

lib/Service/LoopDetector.php

@@ -0,0 +1,91 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OCA\WorkflowDeckAutomation\Service;
+
+/**
+ * Finds workflows that would hand cards around in a circle — pure logic, no
+ * Nextcloud or Deck dependencies, so it is unit-testable like
+ * NotificationPolicy.
+ *
+ * Every enabled workflow is an edge "source stack → target stack". Two
+ * workflows S1 → S2 and S2 → S1 move a card back and forth on every run,
+ * and since the runner reads each source stack afresh, even within a single
+ * run — with a notice each time. The trigger date is deliberately ignored:
+ * with S1 → S2 by start date and S2 → S1 by due date, every card whose two
+ * dates have both passed still circles. A workflow whose source is its own
+ * target is the shortest such loop.
+ *
+ * Deck's stack ids are unique across boards, so edges from several boards
+ * can be passed in together without mixing anything up.
+ */
+class LoopDetector {
+	/**
+	 * The edges for findPath() and findLoopingWorkflows(). Typed only in the
+	 * docblock, so the tests need no Nextcloud classes.
+	 *
+	 * @param iterable<\OCA\WorkflowDeckAutomation\Db\Workflow> $workflows
+	 * @return array<int, array{0: int, 1: int}>
+	 */
+	public static function edgesOf(iterable $workflows): array {
+		$edges = [];
+		foreach ($workflows as $workflow) {
+			$edges[(int)$workflow->getId()] = [(int)$workflow->getSourceStackId(), (int)$workflow->getTargetStackId()];
+		}
+		return $edges;
+	}
+
+	/**
+	 * The workflows leading from stack $from to stack $to, in order, or
+	 * `null` if there is no way. `[]` if $from already is $to.
+	 *
+	 * @param array<int, array{0: int, 1: int}> $edges workflow id => [source stack id, target stack id]
+	 * @return list<int>|null
+	 */
+	public static function findPath(array $edges, int $from, int $to): ?array {
+		if ($from === $to) {
+			return [];
+		}
+
+		// Breadth-first, remembering how each stack was reached.
+		$reachedBy = [$from => null];
+		$queue = [$from];
+		while ($queue !== []) {
+			$stack = array_shift($queue);
+			foreach ($edges as $id => [$source, $target]) {
+				if ($source !== $stack || array_key_exists($target, $reachedBy)) {
+					continue;
+				}
+				$reachedBy[$target] = [$id, $stack];
+				if ($target === $to) {
+					$path = [];
+					for ($at = $to; $reachedBy[$at] !== null; $at = $reachedBy[$at][1]) {
+						array_unshift($path, $reachedBy[$at][0]);
+					}
+					return $path;
+				}
+				$queue[] = $target;
+			}
+		}
+
+		return null;
+	}
+
+	/**
+	 * Ids of the workflows that lie on a loop: those whose target leads back
+	 * to their own source.
+	 *
+	 * @param array<int, array{0: int, 1: int}> $edges workflow id => [source stack id, target stack id]
+	 * @return list<int>
+	 */
+	public static function findLoopingWorkflows(array $edges): array {
+		$looping = [];
+		foreach ($edges as $id => [$source, $target]) {
+			if (self::findPath($edges, $target, $source) !== null) {
+				$looping[] = $id;
+			}
+		}
+		return $looping;
+	}
+}

lib/Service/NotificationMailer.php

@@ -6,7 +6,6 @@ namespace OCA\WorkflowDeckAutomation\Service;
 
 use OCA\Deck\Db\Card;
 use OCA\WorkflowDeckAutomation\Db\Workflow;
-use OCP\IL10N;
 use OCP\IURLGenerator;
 use OCP\IUser;
 use OCP\Mail\IEMailTemplate;
@@ -15,80 +14,137 @@ use OCP\Util;
 use Psr\Log\LoggerInterface;
 use Throwable;
 
-class NotificationMailer {
-	/**
-	 * Descriptions are unbounded in Deck; keep the mail readable and well
-	 * clear of any MTA size limits.
+/**
+ * The app is used internally only and speaks German, like its settings
+ * page: texts are written in German directly instead of going through
+ * IL10N with English source strings and a translation file.
  */
-	private const MAX_DESCRIPTION_LENGTH = 2000;
+class NotificationMailer {
+	private const APP_ID = 'workflow_deck_automation';
+
+	private const SENDER_NAME = 'Deck Workflow-Automatisierung';
+
+	/**
+	 * Language of Nextcloud's own footer text ("automatically sent email,
+	 * please do not reply"), which would otherwise follow the instance
+	 * default — in cron there is no request to take a language from.
+	 */
+	private const FOOTER_LANGUAGE = 'de';
 
 	public function __construct(
 		private IMailer $mailer,
 		private IURLGenerator $urlGenerator,
-		private IL10N $l10n,
 		private LoggerInterface $logger,
 	) {
 	}
 
 	/**
-	 * @param array{board: string, sourceStack: string, targetStack: string} $targets
-	 *        titles resolved by DeckIntegrationService::describeTargets()
+	 * One mail listing every card moved for $recipient in this run — they
+	 * may come from several workflows and boards.
+	 *
+	 * @param non-empty-list<array{workflow: Workflow, card: Card, targets: array{board: string, sourceStack: string, targetStack: string}}> $entries
+	 *        targets are the titles resolved by DeckIntegrationService::describeTargets()
 	 */
-	public function sendCardMovedNotification(IUser $user, Workflow $workflow, Card $card, array $targets): void {
-		$email = $user->getEMailAddress();
+	public function sendCardsMovedNotification(IUser $recipient, array $entries): void {
+		$email = $recipient->getEMailAddress();
 		if ($email === null || $email === '') {
-			$this->logger->info('Skipping notification for workflow ' . $workflow->getId() . ': user ' . $user->getUID() . ' has no email address', [
-				'app' => 'workflow_deck_automation',
+			$this->logger->info('Skipping moved-cards mail: user ' . $recipient->getUID() . ' has no email address', [
+				'app' => self::APP_ID,
 			]);
 			return;
 		}
 
-		try {
-			$cardLink = $this->urlGenerator->getAbsoluteURL(
-				'/apps/deck/board/' . $workflow->getBoardId() . '/card/' . $card->getId(),
-			);
+		$count = count($entries);
 
-			$template = $this->mailer->createEMailTemplate('workflow_deck_automation.CardMoved', [
-				'cardTitle' => $card->getTitle(),
-				'workflowTitle' => $workflow->getTitle(),
+		try {
+			$template = $this->mailer->createEMailTemplate(self::APP_ID . '.CardsMoved', [
+				'count' => $count,
+				'cardTitles' => array_map(static fn (array $entry) => $entry['card']->getTitle(), $entries),
 			]);
-			$template->setSubject($this->l10n->t('Deck card moved: %s', [$card->getTitle()]));
+			$template->setSubject($count === 1
+				? sprintf('Deck-Karte verschoben: %s', $entries[0]['card']->getTitle())
+				: sprintf('%d Deck-Karten verschoben', $count));
 			$template->addHeader();
-			$template->addHeading($this->l10n->t('A card was moved automatically'), false);
-			$template->addBodyText($this->l10n->t(
-				'The card "%1$s" was moved because it is overdue (workflow "%2$s").',
-				[$card->getTitle(), $workflow->getTitle()],
-			));
-			// Single-argument addBodyText() runs htmlspecialchars() itself, so
-			// these board- and stack-titles (user input) are safe as-is —
-			// unlike the description below, which passes both parts.
-			$template->addBodyText($this->l10n->t(
-				'Board "%1$s": moved from "%2$s" to "%3$s".',
-				[$targets['board'], $targets['sourceStack'], $targets['targetStack']],
-			));
-			$this->addCardDescription($template, $card);
-			$template->addBodyButton($this->l10n->t('Open card'), $cardLink);
-			$template->addFooter();
+			$template->addHeading($count === 1
+				? 'Eine Karte wurde automatisch verschoben'
+				: sprintf('%d Karten wurden automatisch verschoben', $count), false);
+
+			foreach ($entries as $entry) {
+				$this->addCard($template, $entry['workflow'], $entry['card'], $entry['targets']);
+			}
+
+			$template->addFooter('', self::FOOTER_LANGUAGE);
 
 			$message = $this->mailer->createMessage();
-			$message->setTo([$email => $user->getDisplayName()]);
-			$message->setFrom([Util::getDefaultEmailAddress('noreply') => $this->l10n->t('Deck Workflow Automation')]);
+			$message->setTo([$email => $recipient->getDisplayName()]);
+			$message->setFrom([Util::getDefaultEmailAddress('noreply') => self::SENDER_NAME]);
 			$message->useTemplate($template);
 
 			$failedRecipients = $this->mailer->send($message);
 			if (!empty($failedRecipients)) {
-				$this->logger->error('Notification mail for card ' . $card->getId() . ' failed for: ' . implode(', ', $failedRecipients), [
-					'app' => 'workflow_deck_automation',
+				$this->logger->error('Moved-cards mail failed for: ' . implode(', ', $failedRecipients), [
+					'app' => self::APP_ID,
 				]);
 			}
 		} catch (Throwable $e) {
-			$this->logger->error('Could not send notification mail for card ' . $card->getId() . ': ' . $e->getMessage(), [
-				'app' => 'workflow_deck_automation',
+			$this->logger->error('Could not send moved-cards mail to ' . $recipient->getUID() . ': ' . $e->getMessage(), [
+				'app' => self::APP_ID,
 				'exception' => $e,
 			]);
 		}
 	}
 
+	/**
+	 * @param array{board: string, sourceStack: string, targetStack: string} $targets
+	 */
+	private function addCard(IEMailTemplate $template, Workflow $workflow, Card $card, array $targets): void {
+		// The card description and the workflow's name are deliberately left
+		// out — the mail only says what moved where, and why. The card title
+		// itself is the link to the card.
+		$sentence = '„%1$s“ (Board „%2$s“) %5$s und wurde von „%3$s“ nach „%4$s“ verschoben.';
+		$reason = TriggerDate::describeReason((string)$workflow->getTriggerDate());
+		$url = $this->urlGenerator->getAbsoluteURL('/apps/deck/board/' . $workflow->getBoardId() . '/card/' . $card->getId());
+
+		// With both parts passed, addBodyText() escapes nothing: every title
+		// is user input and has to be escaped here for the HTML part.
+		$html = sprintf(
+			$sentence,
+			'<a href="' . self::escape($url) . '">' . self::escape($card->getTitle()) . '</a>',
+			self::escape($targets['board']),
+			self::escape($targets['sourceStack']),
+			self::escape($targets['targetStack']),
+			self::escape($reason),
+		);
+		$plain = sprintf(
+			$sentence,
+			$card->getTitle(),
+			$targets['board'],
+			$targets['sourceStack'],
+			$targets['targetStack'],
+			$reason,
+		) . PHP_EOL . $url;
+
+		$template->addBodyText($html, $plain);
+	}
+
+	private static function escape(string $text): string {
+		return htmlspecialchars($text, ENT_QUOTES, 'UTF-8');
+	}
+
+	/**
+	 * Completes "… wurde ausgeschaltet, weil %s." — shared with
+	 * Notification\Notifier so mail and notification give the same reason.
+	 *
+	 * @param WorkflowRunner::TARGET_* $brokenTarget
+	 */
+	public static function describeBrokenTarget(string $brokenTarget): string {
+		return match ($brokenTarget) {
+			WorkflowRunner::TARGET_SOURCE_STACK => 'sein Quell-Stapel nicht mehr existiert',
+			WorkflowRunner::TARGET_TARGET_STACK => 'sein Ziel-Stapel nicht mehr existiert',
+			default => 'sein Board nicht mehr existiert oder für dich nicht mehr verfügbar ist',
+		};
+	}
+
 	/**
 	 * One-off notice that a workflow was switched off because the board or
 	 * stack it points at is gone.
@@ -99,81 +155,49 @@ class NotificationMailer {
 		$email = $user->getEMailAddress();
 		if ($email === null || $email === '') {
 			$this->logger->info('Cannot notify about disabled workflow ' . $workflow->getId() . ': user ' . $user->getUID() . ' has no email address', [
-				'app' => 'workflow_deck_automation',
+				'app' => self::APP_ID,
 			]);
 			return;
 		}
 
-		$reason = match ($brokenTarget) {
-			WorkflowRunner::TARGET_SOURCE_STACK => $this->l10n->t('its source stack no longer exists'),
-			WorkflowRunner::TARGET_TARGET_STACK => $this->l10n->t('its target stack no longer exists'),
-			default => $this->l10n->t('its board no longer exists or is no longer available to you'),
-		};
+		$reason = self::describeBrokenTarget($brokenTarget);
 
 		try {
-			$settingsLink = $this->urlGenerator->getAbsoluteURL('/settings/user/workflow_deck_automation');
+			$settingsLink = $this->urlGenerator->getAbsoluteURL('/settings/user/' . self::APP_ID);
 
-			$template = $this->mailer->createEMailTemplate('workflow_deck_automation.WorkflowDisabled', [
+			$template = $this->mailer->createEMailTemplate(self::APP_ID . '.WorkflowDisabled', [
 				'workflowTitle' => $workflow->getTitle(),
 			]);
-			$template->setSubject($this->l10n->t('Deck workflow deactivated: %s', [$workflow->getTitle()]));
+			$template->setSubject(sprintf('Deck-Workflow deaktiviert: %s', $workflow->getTitle()));
 			$template->addHeader();
-			$template->addHeading($this->l10n->t('A workflow was deactivated'), false);
-			$template->addBodyText($this->l10n->t(
-				'The workflow "%1$s" was switched off automatically because %2$s. No cards are being moved by it any more.',
-				[$workflow->getTitle(), $reason],
+			$template->addHeading('Ein Workflow wurde deaktiviert', false);
+			$template->addBodyText(sprintf(
+				'Der Workflow „%1$s“ wurde automatisch ausgeschaltet, weil %2$s. Er verschiebt keine Karten mehr.',
+				$workflow->getTitle(),
+				$reason,
 			));
-			$template->addBodyText($this->l10n->t(
-				'Delete the workflow or point it at an existing board and stack to reactivate it. You will not be reminded about this workflow again.',
-			));
-			$template->addBodyButton($this->l10n->t('Open settings'), $settingsLink);
-			$template->addFooter();
+			$template->addBodyText(
+				'Lösche den Workflow oder stelle ein vorhandenes Board und vorhandene Stapel ein, um ihn wieder zu aktivieren. An diesen Workflow wirst du nicht noch einmal erinnert.',
+			);
+			$template->addBodyButton('Einstellungen öffnen', $settingsLink);
+			$template->addFooter('', self::FOOTER_LANGUAGE);
 
 			$message = $this->mailer->createMessage();
 			$message->setTo([$email => $user->getDisplayName()]);
-			$message->setFrom([Util::getDefaultEmailAddress('noreply') => $this->l10n->t('Deck Workflow Automation')]);
+			$message->setFrom([Util::getDefaultEmailAddress('noreply') => self::SENDER_NAME]);
 			$message->useTemplate($template);
 
 			$failedRecipients = $this->mailer->send($message);
 			if (!empty($failedRecipients)) {
 				$this->logger->error('Deactivation mail for workflow ' . $workflow->getId() . ' failed for: ' . implode(', ', $failedRecipients), [
-					'app' => 'workflow_deck_automation',
+					'app' => self::APP_ID,
 				]);
 			}
 		} catch (Throwable $e) {
 			$this->logger->error('Could not send deactivation mail for workflow ' . $workflow->getId() . ': ' . $e->getMessage(), [
-				'app' => 'workflow_deck_automation',
+				'app' => self::APP_ID,
 				'exception' => $e,
 			]);
 		}
 	}
-
-	/**
-	 * Appends the card's description, if it has one.
-	 *
-	 * Deck stores the description as Markdown. It is sent as-is rather than
-	 * rendered: pulling a Markdown parser in just for the mail would be a
-	 * lot of machinery, and unrendered Markdown still reads fine.
-	 */
-	private function addCardDescription(IEMailTemplate $template, Card $card): void {
-		$description = trim((string)$card->getDescription());
-		if ($description === '') {
-			return;
-		}
-
-		if (mb_strlen($description) > self::MAX_DESCRIPTION_LENGTH) {
-			$description = mb_substr($description, 0, self::MAX_DESCRIPTION_LENGTH) . ' […]';
-		}
-
-		$template->addBodyText($this->l10n->t('Card content:'));
-
-		// addBodyText() only runs htmlspecialchars() when it has to build the
-		// plain-text part itself. Passing both parts means escaping is on us
-		// -- and it has to be, because a card description is user input that
-		// would otherwise land unescaped in the HTML mail.
-		$template->addBodyText(
-			nl2br(htmlspecialchars($description, ENT_QUOTES, 'UTF-8'), false),
-			$description,
-		);
-	}
 }

lib/Service/NotificationPolicy.php

@@ -0,0 +1,94 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OCA\WorkflowDeckAutomation\Service;
+
+/**
+ * Who hears about a moved card, and how — pure logic, no Nextcloud or Deck
+ * dependencies, so it is unit-testable like WorkflowRunner::hasPassed().
+ */
+class NotificationPolicy {
+	/** No mail at all. */
+	public const MODE_OFF = 'off';
+	/** Only the workflow's owner (the board owner), regardless of Deck settings. */
+	public const MODE_OWNER = 'owner';
+	/** Everyone with access to the board, filtered by their own Deck setting. */
+	public const MODE_BOARD = 'board';
+
+	public const MODES = [self::MODE_OFF, self::MODE_OWNER, self::MODE_BOARD];
+
+	/** One mail per recipient and run. */
+	public const CHANNEL_MAIL = 'mail';
+	/** One Nextcloud notification (bell, push to the mobile apps) per card. */
+	public const CHANNEL_NOTIFICATION = 'notification';
+	public const CHANNEL_BOTH = 'both';
+
+	public const CHANNELS = [self::CHANNEL_MAIL, self::CHANNEL_NOTIFICATION, self::CHANNEL_BOTH];
+
+	/**
+	 * Values of Deck's per-user, per-board preference
+	 * `deck` / `board:<boardId>:notify-due` (Deck's
+	 * ConfigService::SETTING_BOARD_NOTIFICATION_DUE_*), inlined so a renamed
+	 * constant cannot fatal this app. It is the board's "Notifications" menu
+	 * in Deck — the due-date reminder setting, which is exactly what fits a
+	 * card being moved because it fell due.
+	 */
+	public const DECK_OFF = 'off';
+	public const DECK_ASSIGNED = 'assigned';
+	public const DECK_ALL = 'all';
+	/** What Deck assumes for a user who never touched the setting. */
+	public const DECK_DEFAULT = self::DECK_ASSIGNED;
+
+	public static function isValidMode(string $mode): bool {
+		return in_array($mode, self::MODES, true);
+	}
+
+	public static function isValidChannel(string $channel): bool {
+		return in_array($channel, self::CHANNELS, true);
+	}
+
+	/**
+	 * An unknown channel counts as `mail`, the column default — mail was the
+	 * only channel before the column existed.
+	 */
+	public static function sendsMail(string $channel): bool {
+		return $channel !== self::CHANNEL_NOTIFICATION;
+	}
+
+	public static function sendsNotification(string $channel): bool {
+		return $channel === self::CHANNEL_NOTIFICATION || $channel === self::CHANNEL_BOTH;
+	}
+
+	/**
+	 * Mirrors Deck's own decision in NotificationHelper::sendCardDuedate():
+	 *
+	 * - `off` never notifies — not even the owner of an unshared board;
+	 * - `all` always notifies;
+	 * - the owner of an unshared board is notified for every card, since on a
+	 *   board nobody else can see "assigned" would otherwise mean nothing;
+	 * - `assigned` notifies users assigned to the card, directly or through a
+	 *   group or circle.
+	 *
+	 * An unknown value is treated as Deck's default. Deck rejects anything
+	 * else when storing the setting, so that only happens if the preference
+	 * was edited by hand.
+	 *
+	 * @param bool|callable(): bool $isAssigned a callable is only invoked when
+	 *        the answer actually depends on it — it costs a query per user
+	 */
+	public static function shouldNotify(string $deckSetting, bool $isOwnerOfUnsharedBoard, bool|callable $isAssigned): bool {
+		if (!in_array($deckSetting, [self::DECK_OFF, self::DECK_ASSIGNED, self::DECK_ALL], true)) {
+			$deckSetting = self::DECK_DEFAULT;
+		}
+
+		if ($deckSetting === self::DECK_OFF) {
+			return false;
+		}
+		if ($deckSetting === self::DECK_ALL || $isOwnerOfUnsharedBoard) {
+			return true;
+		}
+
+		return is_callable($isAssigned) ? (bool)$isAssigned() : $isAssigned;
+	}
+}

lib/Service/NotificationPusher.php

@@ -0,0 +1,134 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OCA\WorkflowDeckAutomation\Service;
+
+use OCA\Deck\Db\Card;
+use OCA\WorkflowDeckAutomation\AppInfo\Application;
+use OCA\WorkflowDeckAutomation\Db\Workflow;
+use OCP\App\IAppManager;
+use OCP\AppFramework\Utility\ITimeFactory;
+use OCP\IUser;
+use OCP\Notification\IManager;
+use Psr\Log\LoggerInterface;
+use Throwable;
+
+/**
+ * Nextcloud notifications (the bell, and from there push to the mobile and
+ * desktop clients) — the counterpart to NotificationMailer. Only the raw
+ * values are stored here; Notification\Notifier turns them into text when a
+ * client fetches the notification.
+ *
+ * Without the notifications app nothing is sent and nothing is logged as an
+ * error: the app is optional, and IManager would just drop the notification.
+ */
+class NotificationPusher {
+	public const SUBJECT_CARD_MOVED = 'card_moved';
+	public const SUBJECT_WORKFLOW_DISABLED = 'workflow_disabled';
+
+	public const OBJECT_CARD = 'card';
+	public const OBJECT_WORKFLOW = 'workflow';
+
+	private const NOTIFICATIONS_APP = 'notifications';
+
+	public function __construct(
+		private IManager $notificationManager,
+		private IAppManager $appManager,
+		private ITimeFactory $timeFactory,
+		private LoggerInterface $logger,
+	) {
+	}
+
+	public function isAvailableFor(IUser $user): bool {
+		try {
+			return $this->appManager->isEnabledForUser(self::NOTIFICATIONS_APP, $user);
+		} catch (Throwable $e) {
+			return false;
+		}
+	}
+
+	/**
+	 * One notification per card, unlike the mail: each one links its card
+	 * and can be dismissed on its own. An older notification about the same
+	 * card is removed first, so a card that comes back and falls due again
+	 * is not listed twice.
+	 *
+	 * @param non-empty-list<array{workflow: Workflow, card: Card, targets: array{board: string, sourceStack: string, targetStack: string}}> $entries
+	 */
+	public function sendCardsMovedNotification(IUser $recipient, array $entries): void {
+		if (!$this->isAvailableFor($recipient)) {
+			return;
+		}
+
+		foreach ($entries as $entry) {
+			$workflow = $entry['workflow'];
+			$card = $entry['card'];
+			$targets = $entry['targets'];
+
+			try {
+				$this->dismiss($recipient, self::OBJECT_CARD, (string)$card->getId(), self::SUBJECT_CARD_MOVED);
+
+				$notification = $this->notificationManager->createNotification();
+				$notification->setApp(Application::APP_ID)
+					->setUser($recipient->getUID())
+					->setDateTime($this->timeFactory->getDateTime())
+					->setObject(self::OBJECT_CARD, (string)$card->getId())
+					->setSubject(self::SUBJECT_CARD_MOVED, [
+						'cardTitle' => (string)$card->getTitle(),
+						'boardId' => $workflow->getBoardId(),
+						'boardTitle' => $targets['board'],
+						'sourceStackId' => $workflow->getSourceStackId(),
+						'sourceStackTitle' => $targets['sourceStack'],
+						'targetStackId' => $workflow->getTargetStackId(),
+						'targetStackTitle' => $targets['targetStack'],
+						'triggerDate' => (string)$workflow->getTriggerDate(),
+					]);
+				$this->notificationManager->notify($notification);
+			} catch (Throwable $e) {
+				$this->logger->error('Could not notify ' . $recipient->getUID() . ' about moved card ' . $card->getId() . ': ' . $e->getMessage(), [
+					'app' => Application::APP_ID,
+					'exception' => $e,
+				]);
+			}
+		}
+	}
+
+	/**
+	 * Companion to NotificationMailer::sendWorkflowDisabledNotification().
+	 *
+	 * @param WorkflowRunner::TARGET_* $brokenTarget
+	 */
+	public function sendWorkflowDisabledNotification(IUser $user, Workflow $workflow, string $brokenTarget): void {
+		if (!$this->isAvailableFor($user)) {
+			return;
+		}
+
+		try {
+			$notification = $this->notificationManager->createNotification();
+			$notification->setApp(Application::APP_ID)
+				->setUser($user->getUID())
+				->setDateTime($this->timeFactory->getDateTime())
+				->setObject(self::OBJECT_WORKFLOW, (string)$workflow->getId())
+				->setSubject(self::SUBJECT_WORKFLOW_DISABLED, [
+					'workflowTitle' => (string)$workflow->getTitle(),
+					'brokenTarget' => $brokenTarget,
+				]);
+			$this->notificationManager->notify($notification);
+		} catch (Throwable $e) {
+			$this->logger->error('Could not notify ' . $user->getUID() . ' about disabled workflow ' . $workflow->getId() . ': ' . $e->getMessage(), [
+				'app' => Application::APP_ID,
+				'exception' => $e,
+			]);
+		}
+	}
+
+	private function dismiss(IUser $user, string $objectType, string $objectId, string $subject): void {
+		$notification = $this->notificationManager->createNotification();
+		$notification->setApp(Application::APP_ID)
+			->setUser($user->getUID())
+			->setObject($objectType, $objectId)
+			->setSubject($subject);
+		$this->notificationManager->markProcessed($notification);
+	}
+}

lib/Service/TriggerDate.php

@@ -0,0 +1,34 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OCA\WorkflowDeckAutomation\Service;
+
+/**
+ * Which of a card's dates moves it — pure logic, no Nextcloud or Deck
+ * dependencies, so it is unit-testable like NotificationPolicy.
+ */
+class TriggerDate {
+	/** Deck's `duedate`: the card is moved once it is overdue. */
+	public const DUE = 'due';
+	/** Deck's `startdate`: the card is moved once its start date is reached. */
+	public const START = 'start';
+
+	public const ALL = [self::DUE, self::START];
+
+	public static function isValid(string $trigger): bool {
+		return in_array($trigger, self::ALL, true);
+	}
+
+	/**
+	 * Completes "„<card>“ … %s und wurde … verschoben" — shared by
+	 * NotificationMailer and Notification\Notifier so mail and notification
+	 * give the same reason. An unknown value counts as `due`, the column
+	 * default — the due date was the only trigger before the column existed.
+	 */
+	public static function describeReason(string $trigger): string {
+		return $trigger === self::START
+			? 'hat ihr Startdatum erreicht'
+			: 'ist überfällig';
+	}
+}

lib/Service/WorkflowRunner.php

@@ -4,7 +4,9 @@ declare(strict_types=1);
 
 namespace OCA\WorkflowDeckAutomation\Service;
 
+use DateTimeImmutable;
 use DateTimeInterface;
+use DateTimeZone;
 use OCA\Deck\Db\Card;
 use OCA\WorkflowDeckAutomation\Db\Workflow;
 use OCA\WorkflowDeckAutomation\Db\WorkflowMapper;
@@ -17,7 +19,8 @@ use Psr\Log\LoggerInterface;
 use Throwable;
 
 /**
- * Evaluates all enabled workflows and moves overdue cards.
+ * Evaluates all enabled workflows and moves every card whose due date or
+ * start date — whichever the workflow uses, see TriggerDate — has passed.
  *
  * This runner has to evaluate rules for many different users within a
  * single background-job process, so workflows are grouped by owner and
@@ -36,10 +39,20 @@ class WorkflowRunner {
 
 	private ?IUser $impersonationRestore = null;
 
+	/**
+	 * Moved cards per recipient uid, collected over the whole run. Each
+	 * entry's workflow says whether it goes out by mail, as a Nextcloud
+	 * notification, or both.
+	 *
+	 * @var array<string, list<array{workflow: Workflow, card: Card, targets: array{board: string, sourceStack: string, targetStack: string}}>>
+	 */
+	private array $pendingNotices = [];
+
 	public function __construct(
 		private WorkflowMapper $workflowMapper,
 		private DeckIntegrationService $deckService,
 		private NotificationMailer $mailer,
+		private NotificationPusher $pusher,
 		private IUserManager $userManager,
 		private IUserSession $userSession,
 		private IRootFolder $rootFolder,
@@ -54,8 +67,25 @@ class WorkflowRunner {
 			return;
 		}
 
+		// The controller refuses to store a loop, but workflows saved before
+		// that check — including ones whose source is their own target — can
+		// still form one. They would move the same cards on every run, with a
+		// notice each time, so they are left out until the user fixes them;
+		// the settings page marks them.
+		$looping = LoopDetector::findLoopingWorkflows(LoopDetector::edgesOf($workflows));
+
+		$this->pendingNotices = [];
 		$byUser = [];
+		$owners = [];
 		foreach ($workflows as $workflow) {
+			$this->followBoardOwner($workflow, $owners);
+			if (in_array((int)$workflow->getId(), $looping, true)) {
+				$this->logger->warning('Skipping workflow {id}: it moves cards in a loop together with other workflows', [
+					'app' => 'workflow_deck_automation',
+					'id' => $workflow->getId(),
+				]);
+				continue;
+			}
 			$byUser[$workflow->getUserId()][] = $workflow;
 		}
 
@@ -76,6 +106,57 @@ class WorkflowRunner {
 				]);
 			}
 		}
+
+		$this->sendPendingNotices();
+	}
+
+	/**
+	 * A workflow belongs to its board's owner, not to whoever created it: if
+	 * Deck transferred the board, the workflow moves along to the new owner —
+	 * it then runs as them, and they get its mails.
+	 *
+	 * Only a known owner rewrites `user_id`. A board that is gone keeps its
+	 * last owner, so findBrokenTarget() can disable the workflow and mail
+	 * them; a Deck error keeps it too, and the run just goes ahead as before.
+	 *
+	 * @param array<int, ?string> $owners per-run cache, board id => owner
+	 */
+	private function followBoardOwner(Workflow $workflow, array &$owners): void {
+		$boardId = $workflow->getBoardId();
+		if (!array_key_exists($boardId, $owners)) {
+			try {
+				$owners[$boardId] = $this->deckService->findBoardOwner($boardId);
+			} catch (Throwable $e) {
+				$this->logger->warning('Could not determine the owner of board {board}: ' . $e->getMessage(), [
+					'app' => 'workflow_deck_automation',
+					'board' => $boardId,
+				]);
+				$owners[$boardId] = null;
+			}
+		}
+
+		$owner = $owners[$boardId];
+		if ($owner === null || $owner === $workflow->getUserId()) {
+			return;
+		}
+
+		$this->logger->info('Workflow {id} follows board {board} to its new owner {owner}.', [
+			'app' => 'workflow_deck_automation',
+			'id' => $workflow->getId(),
+			'board' => $boardId,
+			'owner' => $owner,
+		]);
+		$workflow->setUserId($owner);
+		try {
+			$this->workflowMapper->update($workflow);
+		} catch (Throwable $e) {
+			// Not persisted, but this run still goes to the right user; the
+			// next one tries again.
+			$this->logger->warning('Could not store the new owner of workflow {id}: ' . $e->getMessage(), [
+				'app' => 'workflow_deck_automation',
+				'id' => $workflow->getId(),
+			]);
+		}
 	}
 
 	/**
@@ -148,6 +229,25 @@ class WorkflowRunner {
 			return;
 		}
 
+		// An archived board is intact, just shelved: the workflow is skipped,
+		// not disabled, and resumes once the board is unarchived.
+		try {
+			$archived = $this->deckService->isBoardArchived($workflow->getBoardId());
+		} catch (DeckUnavailableException $e) {
+			$this->logger->warning('Could not check whether the board of workflow {id} is archived: ' . $e->getMessage(), [
+				'app' => 'workflow_deck_automation',
+				'id' => $workflow->getId(),
+			]);
+			return;
+		}
+		if ($archived) {
+			$this->logger->debug('Skipping workflow {id}: its board is archived', [
+				'app' => 'workflow_deck_automation',
+				'id' => $workflow->getId(),
+			]);
+			return;
+		}
+
 		try {
 			$cards = $this->deckService->getActiveCardsInStack($workflow->getSourceStackId());
 		} catch (DeckUnavailableException $e) {
@@ -158,24 +258,24 @@ class WorkflowRunner {
 			return;
 		}
 
-		$filterUserIds = $workflow->getFilterUserIdsArray();
-		$filterLabelIds = $workflow->getFilterLabelIdsArray();
-		$this->warnAboutDeadFilters($workflow, $filterUserIds, $filterLabelIds);
-
-		// Resolved at most once per run, and only if a card actually moves
-		// and the workflow wants a mail — this is decoration, not a check.
-		$targets = null;
+		$trigger = (string)$workflow->getTriggerDate();
+		if ($trigger === TriggerDate::START && !$this->deckService->supportsStartdate()) {
+			// Not disabled: the workflow is intact, Deck is just too old for
+			// it, and comes back to life with a Deck update.
+			$this->logger->warning('Skipping workflow {id}: this Deck version has no start date', [
+				'app' => 'workflow_deck_automation',
+				'id' => $workflow->getId(),
+			]);
+			return;
+		}
 
+		$moved = [];
 		$now = $this->timeFactory->getDateTime();
 
 		foreach ($cards as $card) {
-			if (!self::isOverdue($card->getDuedate(), $now)) {
-				continue;
-			}
-
-			$assignedUserIds = $this->deckService->getCardAssignedUserIds($card);
-			$labelIds = $this->deckService->getCardLabelIds($card);
-			if (!self::cardMatchesFilters($assignedUserIds, $labelIds, $filterUserIds, $filterLabelIds)) {
+			// Anything but `start` counts as `due`, the column default.
+			$date = $trigger === TriggerDate::START ? $card->getStartdate() : $card->getDuedate();
+			if (!self::hasPassed($date, $now)) {
 				continue;
 			}
 
@@ -187,22 +287,113 @@ class WorkflowRunner {
 				'target' => $workflow->getTargetStackId(),
 			]);
 
-			if (!$this->moveCard($workflow, $card)) {
-				continue;
-			}
-
-			if ($workflow->getNotifyEmail()) {
-				$targets ??= $this->deckService->describeTargets(
-					$workflow->getBoardId(),
-					$workflow->getSourceStackId(),
-					$workflow->getTargetStackId(),
-				);
-				$this->mailer->sendCardMovedNotification($user, $workflow, $card, $targets);
+			if ($this->moveCard($workflow, $card)) {
+				$moved[] = $card;
 			}
 		}
 
 		$workflow->setLastRun($this->timeFactory->getDateTime());
 		$this->workflowMapper->update($workflow);
+
+		if ($moved !== []) {
+			$this->queueNotices($user, $workflow, $moved);
+		}
+	}
+
+	/**
+	 * Works out who hears about the moved cards and parks them in
+	 * $pendingNotices; sendPendingNotices() delivers them at the end of the
+	 * run. The recipients are the same for mail and notification.
+	 *
+	 * Notices are decoration, not part of the move: nothing in here may fail
+	 * the workflow, and if Deck cannot say who wants one, nobody gets one
+	 * rather than people who asked Deck for silence.
+	 *
+	 * @param Card[] $cards
+	 */
+	private function queueNotices(IUser $owner, Workflow $workflow, array $cards): void {
+		$cardIds = array_map(static fn (Card $card): int => (int)$card->getId(), $cards);
+
+		switch ($workflow->getNotifyMode()) {
+			case NotificationPolicy::MODE_OWNER:
+				$recipients = array_fill_keys($cardIds, [$owner->getUID()]);
+				break;
+			case NotificationPolicy::MODE_BOARD:
+				try {
+					$recipients = $this->deckService->findNotificationRecipients($workflow->getBoardId(), $cardIds);
+				} catch (DeckUnavailableException $e) {
+					$this->logger->warning('No mails or notifications for workflow {id}: ' . $e->getMessage(), [
+						'app' => 'workflow_deck_automation',
+						'id' => $workflow->getId(),
+					]);
+					return;
+				}
+				break;
+			default:
+				return;
+		}
+
+		$targets = $this->deckService->describeTargets(
+			$workflow->getBoardId(),
+			$workflow->getSourceStackId(),
+			$workflow->getTargetStackId(),
+		);
+
+		foreach ($cards as $card) {
+			foreach ($recipients[(int)$card->getId()] ?? [] as $uid) {
+				$this->pendingNotices[$uid][] = [
+					'workflow' => $workflow,
+					'card' => $card,
+					'targets' => $targets,
+				];
+			}
+		}
+	}
+
+	/**
+	 * One mail per recipient and run, however many cards and workflows it
+	 * covers — a board with twenty overdue cards and fifteen members would
+	 * otherwise send three hundred mails at once. Nextcloud notifications
+	 * go out per card instead: they are grouped in the bell anyway, and each
+	 * one links its card.
+	 *
+	 * Runs after the per-user loop, so no impersonation is active any more.
+	 */
+	private function sendPendingNotices(): void {
+		$pending = $this->pendingNotices;
+		$this->pendingNotices = [];
+
+		foreach ($pending as $uid => $entries) {
+			// Same reasoning as in run(): nothing may escape.
+			try {
+				$recipient = $this->userManager->get((string)$uid);
+				if ($recipient === null || !$recipient->isEnabled()) {
+					continue;
+				}
+
+				$mailEntries = array_values(array_filter(
+					$entries,
+					static fn (array $entry): bool => NotificationPolicy::sendsMail((string)$entry['workflow']->getNotifyChannel()),
+				));
+				$notificationEntries = array_values(array_filter(
+					$entries,
+					static fn (array $entry): bool => NotificationPolicy::sendsNotification((string)$entry['workflow']->getNotifyChannel()),
+				));
+
+				if ($mailEntries !== []) {
+					$this->mailer->sendCardsMovedNotification($recipient, $mailEntries);
+				}
+				if ($notificationEntries !== []) {
+					$this->pusher->sendCardsMovedNotification($recipient, $notificationEntries);
+				}
+			} catch (Throwable $e) {
+				$this->logger->error('Could not notify {user} about moved cards: ' . $e->getMessage(), [
+					'app' => 'workflow_deck_automation',
+					'user' => $uid,
+					'exception' => $e,
+				]);
+			}
+		}
 	}
 
 	/**
@@ -246,11 +437,14 @@ class WorkflowRunner {
 			'target' => $brokenTarget,
 		]);
 
-		// Sent regardless of the workflow's notifyEmail setting: that flag is
-		// about moved cards, this is a one-off notice that the automation the
-		// user configured has been switched off. It stays one-off because a
-		// disabled workflow is not picked up again.
+		// Sent to the owner regardless of the workflow's notifyMode and
+		// notifyChannel: those are about moved cards, this is a one-off notice
+		// that the automation the user configured has been switched off — by
+		// mail as always, and in the bell too if the notifications app is
+		// there. It stays one-off because a disabled workflow is not picked
+		// up again.
 		$this->mailer->sendWorkflowDisabledNotification($user, $workflow, $brokenTarget);
+		$this->pusher->sendWorkflowDisabledNotification($user, $workflow, $brokenTarget);
 	}
 
 	private function moveCard(Workflow $workflow, Card $card): bool {
@@ -277,120 +471,42 @@ class WorkflowRunner {
 	}
 
 	/**
-	 * A filter whose every entry has been deleted from the board is not an
-	 * error — the workflow still runs, it just cannot match a single card any
-	 * more, forever, without anything in the UI or the log saying so. That is
-	 * the one failure mode of this app that is completely invisible, so it
-	 * gets a log line on every run.
+	 * Whether the card's trigger date (due or start date, see TriggerDate)
+	 * lies before $now.
 	 *
-	 * Explicitly *not* a reason to disable the workflow or mail the user: a
-	 * filter with three labels of which one was deleted still works as
-	 * intended, and even a fully dead filter may be one board edit away from
-	 * being live again. The settings page shows the same condition in red.
-	 *
-	 * @param string[] $filterUserIds
-	 * @param int[] $filterLabelIds
-	 */
-	private function warnAboutDeadFilters(Workflow $workflow, array $filterUserIds, array $filterLabelIds): void {
-		if ($filterUserIds === [] && $filterLabelIds === []) {
-			return;
-		}
-
-		try {
-			$options = $this->deckService->findFilterOptions($workflow->getBoardId());
-		} catch (DeckUnavailableException $e) {
-			// Same rule as everywhere else: no answer is not a bad answer.
-			$this->logger->debug('Could not check the filters of workflow {id}: ' . $e->getMessage(), [
-				'app' => 'workflow_deck_automation',
-				'id' => $workflow->getId(),
-			]);
-			return;
-		}
-
-		$dead = self::findDeadFilters($filterUserIds, $filterLabelIds, $options['participantUids'], $options['labelIds']);
-
-		if ($dead !== []) {
-			$this->logger->warning(
-				'Workflow {id} can no longer match any card: none of its ' . implode('/', $dead)
-				. ' filter entries exists on board {board} any more',
-				[
-					'app' => 'workflow_deck_automation',
-					'id' => $workflow->getId(),
-					'board' => $workflow->getBoardId(),
-				],
-			);
-		}
-	}
-
-	/**
-	 * Compares the card's actual due timestamp against $now instead of Deck's own
+	 * Compares the card's actual timestamp against $now instead of Deck's own
 	 * Card::getDaysUntilDue(), which truncates both sides to midnight before diffing
 	 * (DateInterval's %a is a whole-day count) and therefore reports 0 - not overdue -
 	 * for any card whose due time has already passed today. That silently held back
 	 * every card for up to 24h after it actually fell due; comparing the raw datetime
 	 * instead matches what Deck's own UI shows (e.g. "vor 2 Stunden") and has no
 	 * day-rounding step to get wrong.
+	 *
+	 * Both sides are compared as absolute instants, and the card's date is
+	 * first pinned to UTC via asStoredUtc() — see there for why.
 	 */
-	public static function isOverdue(?DateTimeInterface $duedate, DateTimeInterface $now): bool {
-		return $duedate !== null && $duedate < $now;
+	public static function hasPassed(?DateTimeInterface $date, DateTimeInterface $now): bool {
+		return $date !== null && self::asStoredUtc($date) < $now;
 	}
 
 	/**
-	 * Which filters cannot match anything any more, because not one of their
-	 * entries is still offered by the board. An empty filter is not dead, it
-	 * is "no restriction on this dimension" — the same reading as in
-	 * cardMatchesFilters(), and getting it backwards would report every
-	 * unfiltered workflow as broken.
+	 * Deck's `duedate` and `startdate` are DATETIME columns without a zone
+	 * that hold UTC wall-clock time: Deck's frontend sends `toISOString()`,
+	 * and the value is written as plain `Y-m-d H:i:s`. Entity hydrates it
+	 * with `new \DateTime($string)`, i.e. in PHP's *default* timezone —
+	 * correct only because Nextcloud sets that default to UTC during
+	 * bootstrap. Reading the wall clock and pinning it to UTC explicitly
+	 * makes the comparison independent of that default, so a server or CLI
+	 * running with a local default zone cannot shift every date by its UTC
+	 * offset.
 	 *
-	 * Static and side-effect free for the same reason as the matching logic:
-	 * testable without a Deck installation.
-	 *
-	 * @param string[] $filterUserIds
-	 * @param int[] $filterLabelIds
-	 * @param string[] $boardUserIds everyone who can hold a card on the board
-	 * @param int[] $boardLabelIds the board's remaining labels
-	 * @return string[] any of 'label', 'user', in that order
+	 * Deck itself has two timezone-sensitive paths this deliberately avoids:
+	 * Card::getDaysUntilDue() (day-truncated, see hasPassed()) and
+	 * CardMapper::findOverdue(), which compares the UTC column against the
+	 * database's `NOW()` — the DB session's local time.
 	 */
-	public static function findDeadFilters(
-		array $filterUserIds,
-		array $filterLabelIds,
-		array $boardUserIds,
-		array $boardLabelIds,
-	): array {
-		$dead = [];
-		if ($filterLabelIds !== [] && array_intersect($filterLabelIds, $boardLabelIds) === []) {
-			$dead[] = 'label';
-		}
-		if ($filterUserIds !== [] && array_intersect($filterUserIds, $boardUserIds) === []) {
-			$dead[] = 'user';
-		}
-		return $dead;
-	}
-
-	/**
-	 * Pure filter-matching logic (kept static/side-effect free so it can
-	 * be unit tested without real Deck objects). Both filters are OR
-	 * inside themselves and AND between each other: an empty filter list
-	 * means "no restriction on this dimension".
-	 *
-	 * @param string[] $cardAssignedUserIds
-	 * @param int[] $cardLabelIds
-	 * @param string[] $filterUserIds
-	 * @param int[] $filterLabelIds
-	 */
-	public static function cardMatchesFilters(
-		array $cardAssignedUserIds,
-		array $cardLabelIds,
-		array $filterUserIds,
-		array $filterLabelIds,
-	): bool {
-		if ($filterUserIds !== [] && array_intersect($filterUserIds, $cardAssignedUserIds) === []) {
-			return false;
-		}
-		if ($filterLabelIds !== [] && array_intersect($filterLabelIds, $cardLabelIds) === []) {
-			return false;
-		}
-		return true;
+	private static function asStoredUtc(DateTimeInterface $date): DateTimeImmutable {
+		return new DateTimeImmutable($date->format('Y-m-d H:i:s.u'), new DateTimeZone('UTC'));
 	}
 
 	/**

lib/Settings/Personal.php

@@ -5,17 +5,31 @@ declare(strict_types=1);
 namespace OCA\WorkflowDeckAutomation\Settings;
 
 use OCA\WorkflowDeckAutomation\AppInfo\Application;
+use OCA\WorkflowDeckAutomation\Service\NotificationPusher;
 use OCP\AppFramework\Http\TemplateResponse;
+use OCP\IUserSession;
 use OCP\Settings\ISettings;
 use OCP\Util;
 
 class Personal implements ISettings {
+	public function __construct(
+		private NotificationPusher $pusher,
+		private IUserSession $userSession,
+	) {
+	}
+
 	public function getForm(): TemplateResponse {
 		// The bundle names carry the app-id prefix that @nextcloud/vite-config adds.
 		Util::addScript(Application::APP_ID, Application::APP_ID . '-personal-settings');
 		Util::addStyle(Application::APP_ID, Application::APP_ID . '-personal-settings');
 
-		return new TemplateResponse(Application::APP_ID, 'settings/personal', [], '');
+		// Only used for a hint in the form: without the notifications app the
+		// job silently sends no Nextcloud notifications.
+		$user = $this->userSession->getUser();
+
+		return new TemplateResponse(Application::APP_ID, 'settings/personal', [
+			'notificationsAvailable' => $user !== null && $this->pusher->isAvailableFor($user),
+		], '');
 	}
 
 	public function getSection(): string {

lib/Settings/PersonalSection.php

@@ -5,13 +5,11 @@ declare(strict_types=1);
 namespace OCA\WorkflowDeckAutomation\Settings;
 
 use OCA\WorkflowDeckAutomation\AppInfo\Application;
-use OCP\IL10N;
 use OCP\IURLGenerator;
 use OCP\Settings\IIconSection;
 
 class PersonalSection implements IIconSection {
 	public function __construct(
-		private IL10N $l10n,
 		private IURLGenerator $urlGenerator,
 	) {
 	}
@@ -21,7 +19,8 @@ class PersonalSection implements IIconSection {
 	}
 
 	public function getName(): string {
-		return $this->l10n->t('Deck workflow automation');
+		// German only, like the rest of this internal app.
+		return 'Deck Workflow-Automatisierung';
 	}
 
 	public function getPriority(): int {

package.json

@@ -1,6 +1,6 @@
 {
 	"name": "workflow_deck_automation",
-	"version": "34.0.2",
+	"version": "35.4.0",
 	"private": true,
 	"type": "module",
 	"description": "Automates moving overdue Deck cards between stacks, configurable per user.",

src/PersonalSettings.vue

@@ -1,7 +1,7 @@
 <template>
 	<NcSettingsSection
 		name="Deck Workflow-Automatisierung"
-		description="Verschiebt überfällige Karten aus einem Deck-Stapel automatisch in einen anderen Stapel. Ein Hintergrundjob prüft die Regeln alle paar Minuten.">
+		description="Verschiebt Karten aus einem Deck-Stapel automatisch in einen anderen Stapel, sobald ihr Fälligkeits- oder Startdatum erreicht ist. Ein Hintergrundjob prüft die Regeln alle paar Minuten.">
 		<NcNoteCard v-if="loadError" type="error">
 			{{ loadError }}
 		</NcNoteCard>
@@ -14,17 +14,19 @@
 			<table v-if="workflows.length" class="wfda-table">
 				<thead>
 					<tr>
+						<th>Board</th>
 						<th>Titel</th>
 						<th>Von Stapel</th>
 						<th>Nach Stapel</th>
-						<th>Filter</th>
-						<th>E-Mail</th>
+						<th>Auslöser</th>
+						<th>Benachrichtigung</th>
 						<th>Aktiv</th>
 						<th />
 					</tr>
 				</thead>
 				<tbody>
-					<tr v-for="workflow in workflows" :key="workflow.id">
+					<tr v-for="workflow in sortedWorkflows" :key="workflow.id">
+						<td>{{ boardLabel(workflow.boardId) }}</td>
 						<td>
 							{{ workflow.title }}
 							<span v-if="workflowIssues[workflow.id]" class="wfda-issue">
@@ -33,16 +35,9 @@
 						</td>
 						<td>{{ stackLabel(workflow.boardId, workflow.sourceStackId) }}</td>
 						<td>{{ stackLabel(workflow.boardId, workflow.targetStackId) }}</td>
-						<td>
-							<span v-if="!workflow.filterUserIds.length && !workflow.filterLabelIds.length">–</span>
-							<span v-else>
-								<span v-if="workflow.filterUserIds.length">{{ workflow.filterUserIds.length }} Benutzer</span>
-								<span v-if="workflow.filterUserIds.length && workflow.filterLabelIds.length">, </span>
-								<span v-if="workflow.filterLabelIds.length">{{ workflow.filterLabelIds.length }} Label</span>
-							</span>
-						</td>
-						<td>{{ workflow.notifyEmail ? 'Ja' : 'Nein' }}</td>
-						<td>{{ workflow.enabled ? 'Ja' : 'Nein' }}</td>
+						<td>{{ triggerLabel(workflow) }}</td>
+						<td>{{ notifyLabel(workflow) }}</td>
+						<td>{{ yesNo(workflow.enabled) }}</td>
 						<td class="wfda-actions">
 							<NcButton variant="tertiary" @click="editWorkflow(workflow)">
 								Bearbeiten
@@ -75,6 +70,12 @@
 					:reduce="option => option.value"
 					placeholder="Board wählen"
 					@update:model-value="onBoardChange" />
+				<NcNoteCard v-if="archivedBoardNote" type="warning">
+					{{ archivedBoardNote }}
+				</NcNoteCard>
+				<NcNoteCard v-if="!boardOptions.length" type="info">
+					Workflows können nur für Boards angelegt werden, deren Eigentümer du bist.
+				</NcNoteCard>
 
 				<NcSelect
 					v-model="form.sourceStackId"
@@ -92,27 +93,61 @@
 					:disabled="!form.boardId"
 					placeholder="Ziel-Stapel wählen" />
 
-				<NcSelect
-					v-model="form.filterUserIds"
-					input-label="Nur für zugewiesene Benutzer (optional)"
-					:options="participantOptions"
-					:reduce="option => option.value"
-					:disabled="!form.boardId"
-					multiple
-					placeholder="Alle Benutzer" />
-
-				<NcSelect
-					v-model="form.filterLabelIds"
-					input-label="Nur mit Label (optional)"
-					:options="labelOptions"
-					:reduce="option => option.value"
-					:disabled="!form.boardId"
-					multiple
-					placeholder="Alle Labels" />
-
-				<NcCheckboxRadioSwitch v-model="form.notifyEmail">
-					Benachrichtigungs-E-Mail an mich senden
+				<fieldset class="wfda-notify">
+					<legend>Karte verschieben, wenn</legend>
+					<NcCheckboxRadioSwitch
+						v-for="option in triggerOptions"
+						:key="option.value"
+						v-model="form.triggerDate"
+						type="radio"
+						name="wfda-trigger-date"
+						:value="option.value">
+						{{ option.label }}
 					</NcCheckboxRadioSwitch>
+					<p class="wfda-hint">
+						Karten ohne das gewählte Datum bleiben liegen.
+					</p>
+				</fieldset>
+
+				<fieldset class="wfda-notify">
+					<legend>Benachrichtigung bei verschobenen Karten</legend>
+					<NcCheckboxRadioSwitch
+						v-for="option in notifyOptions"
+						:key="option.value"
+						v-model="form.notifyMode"
+						type="radio"
+						name="wfda-notify-mode"
+						:value="option.value">
+						{{ option.label }}
+					</NcCheckboxRadioSwitch>
+					<p v-if="form.notifyMode === 'board'" class="wfda-hint">
+						Jedes Board-Mitglied wird entsprechend seiner eigenen
+						Deck-Einstellung „Benachrichtigungen“ für dieses Board informiert: bei „Alle Karten“ immer,
+						bei „Zugewiesene Karten“ nur für Karten, denen es zugewiesen ist, bei „Keine“ nie.
+					</p>
+				</fieldset>
+
+				<fieldset v-if="form.notifyMode !== 'off'" class="wfda-notify">
+					<legend>Benachrichtigen per</legend>
+					<NcCheckboxRadioSwitch
+						v-for="option in channelOptions"
+						:key="option.value"
+						v-model="form.notifyChannel"
+						type="radio"
+						name="wfda-notify-channel"
+						:value="option.value">
+						{{ option.label }}
+					</NcCheckboxRadioSwitch>
+					<p class="wfda-hint">
+						Mehrere Karten eines Laufs werden zu einer E-Mail zusammengefasst.
+						Nextcloud-Benachrichtigungen erscheinen pro Karte in der Glocke und als Push-Nachricht
+						in den Nextcloud-Apps auf Handy und Desktop.
+					</p>
+					<NcNoteCard v-if="!props.notificationsAvailable && form.notifyChannel !== 'mail'" type="warning">
+						Die App „Benachrichtigungen“ ist auf dieser Nextcloud nicht aktiviert.
+						Nextcloud-Benachrichtigungen werden deshalb nicht verschickt.
+					</NcNoteCard>
+				</fieldset>
 
 				<NcCheckboxRadioSwitch v-model="form.enabled">
 					Workflow aktiv
@@ -148,34 +183,75 @@ import {
 	createWorkflow,
 	deleteWorkflow,
 	fetchBoards,
-	fetchLabels,
-	fetchParticipants,
 	fetchStacks,
 	fetchWorkflows,
 	updateWorkflow,
 } from './api.js'
 
+const props = defineProps({
+	// Whether the notifications app is enabled for the current user, from
+	// the data attribute set in templates/settings/personal.php.
+	notificationsAvailable: {
+		type: Boolean,
+		default: true,
+	},
+})
+
 const loading = ref(true)
 const loadError = ref('')
 const workflows = ref([])
 const boards = ref([])
 // Per board, and `null` whenever the request failed — see loadStacksFor().
 const stacksByBoard = reactive({})
-const labelsByBoard = reactive({})
-const participantsByBoard = reactive({})
 
 const showForm = ref(false)
 const saving = ref(false)
 const formError = ref('')
 const editingId = ref(null)
+// Shown when the workflow being edited sits on an archived board.
+const archivedBoardNote = ref('')
 
 const stackOptions = ref([])
-const labelOptions = ref([])
-const participantOptions = ref([])
-// Which board the three lists above currently belong to.
+// Which board the list above currently belongs to.
 const loadedBoardId = ref(null)
 
-const boardOptions = computed(() => boards.value.map((board) => ({ value: board.id, label: board.title })))
+const collator = new Intl.Collator(undefined, { numeric: true, sensitivity: 'base' })
+
+// The backend only returns boards the user owns. Archived ones are in there
+// so their workflows keep a board name, but are never offered — not even
+// when editing a workflow that sits on one, see editWorkflow().
+const boardOptions = computed(() => boards.value
+	.filter((board) => !board.archived)
+	.map((board) => ({ value: board.id, label: board.title }))
+	.sort((a, b) => collator.compare(a.label, b.label)))
+
+/**
+ * Alphabetical by the columns as displayed, left to right: board, title,
+ * source stack, target stack, trigger, notification, active.
+ */
+const sortedWorkflows = computed(() => {
+	const sortKeys = (workflow) => [
+		boardLabel(workflow.boardId),
+		workflow.title,
+		stackLabel(workflow.boardId, workflow.sourceStackId),
+		stackLabel(workflow.boardId, workflow.targetStackId),
+		triggerLabel(workflow),
+		notifyLabel(workflow),
+		yesNo(workflow.enabled),
+	]
+	return workflows.value
+		.map((workflow) => ({ workflow, keys: sortKeys(workflow) }))
+		.sort((a, b) => {
+			for (let i = 0; i < a.keys.length; i++) {
+				const result = collator.compare(a.keys[i], b.keys[i])
+				if (result !== 0) {
+					return result
+				}
+			}
+			return a.workflow.id - b.workflow.id
+		})
+		.map((entry) => entry.workflow)
+})
 
 // Source and target must differ, so each dropdown hides what the other one
 // already holds — the error message on save stays as the backstop for
@@ -184,21 +260,17 @@ const sourceStackOptions = computed(() => stackOptions.value.filter((option) =>
 const targetStackOptions = computed(() => stackOptions.value.filter((option) => option.value !== form.sourceStackId))
 
 /**
- * Workflows that stopped working, keyed by id. Two different kinds:
- *
- * - Board or stacks deleted in Deck. The background job switches these off
- *   by itself, but a row that just stopped working needs to say so instead
- *   of looking healthy.
- * - Every entry of a filter deleted from the board. Nothing switches those
- *   off — deliberately, since one deleted label out of three is harmless —
- *   yet a filter that cannot match a single card any more is otherwise
- *   completely invisible: the workflow keeps running and moves nothing.
+ * Workflows that do not run as configured, keyed by id: board or stacks
+ * deleted in Deck (the background job switches these off by itself), board
+ * archived, or part of a loop (both skipped). A row that just stopped
+ * working needs to say so instead of looking healthy.
  */
 const workflowIssues = computed(() => {
 	const issues = {}
 
 	for (const workflow of workflows.value) {
-		if (!boards.value.some((board) => board.id === workflow.boardId)) {
+		const board = boards.value.find((entry) => entry.id === workflow.boardId)
+		if (!board) {
 			issues[workflow.id] = 'Board nicht mehr vorhanden'
 			continue
 		}
@@ -218,35 +290,25 @@ const workflowIssues = computed(() => {
 			}
 		}
 
-		const dead = []
-		if (isDeadFilter(workflow.filterLabelIds, labelsByBoard[workflow.boardId], 'id')) {
-			dead.push('Label-Filter')
+		// Not disabled, just skipped by the background job until the board
+		// is taken out of the archive again.
+		if (board.archived) {
+			issues[workflow.id] = 'Board archiviert, wird übersprungen'
+			continue
 		}
-		if (isDeadFilter(workflow.filterUserIds, participantsByBoard[workflow.boardId], 'uid')) {
-			dead.push('Benutzer-Filter')
-		}
-		if (dead.length > 1) {
-			issues[workflow.id] = `${dead.join(' und ')} treffen keine Karte mehr`
-		} else if (dead.length) {
-			issues[workflow.id] = `${dead[0]} trifft keine Karte mehr`
+
+		// Set by the server for workflows stored before loops were refused;
+		// the background job skips them.
+		if (workflow.loop) {
+			issues[workflow.id] = workflow.sourceStackId === workflow.targetStackId
+				? 'Quell- und Ziel-Stapel sind gleich, wird übersprungen'
+				: 'Bildet mit anderen Workflows eine Schleife, wird übersprungen'
 		}
 	}
 
 	return issues
 })
 
-/**
- * True only on positive knowledge: the filter has entries, the board's list
- * was actually loaded, and not one entry is still on it. A failed request
- * (null) says nothing and must not turn a healthy row red.
- */
-function isDeadFilter(selected, available, key) {
-	if (!selected.length || !available) {
-		return false
-	}
-	return !selected.some((value) => available.some((entry) => entry[key] === value))
-}
-
 const form = reactive(emptyForm())
 
 function emptyForm() {
@@ -255,13 +317,55 @@ function emptyForm() {
 		boardId: null,
 		sourceStackId: null,
 		targetStackId: null,
-		filterUserIds: [],
-		filterLabelIds: [],
-		notifyEmail: false,
+		triggerDate: 'due',
+		notifyMode: 'off',
+		notifyChannel: 'mail',
 		enabled: true,
 	}
 }
 
+// Values match TriggerDate::ALL on the server.
+const triggerOptions = [
+	{ value: 'due', label: 'das Fälligkeitsdatum überschritten ist (Karte ist überfällig)', short: 'Fälligkeit' },
+	{ value: 'start', label: 'das Startdatum erreicht ist', short: 'Startdatum' },
+]
+
+// Values match NotificationPolicy::MODES on the server.
+const notifyOptions = [
+	{ value: 'off', label: 'Keine Benachrichtigung', short: 'Keine' },
+	{ value: 'owner', label: 'Nur an mich', short: 'Nur ich' },
+	{ value: 'board', label: 'An Board-Mitglieder laut ihrer Deck-Einstellung', short: 'Board-Mitglieder' },
+]
+
+// Values match NotificationPolicy::CHANNELS on the server.
+const channelOptions = [
+	{ value: 'mail', label: 'E-Mail', short: 'E-Mail' },
+	{ value: 'notification', label: 'Nextcloud-Benachrichtigung (Push)', short: 'Push' },
+	{ value: 'both', label: 'E-Mail und Nextcloud-Benachrichtigung', short: 'E-Mail + Push' },
+]
+
+function triggerLabel(workflow) {
+	return triggerOptions.find((option) => option.value === workflow.triggerDate)?.short ?? workflow.triggerDate
+}
+
+function notifyLabel(workflow) {
+	const mode = notifyOptions.find((option) => option.value === workflow.notifyMode)?.short ?? workflow.notifyMode
+	if (workflow.notifyMode === 'off') {
+		return mode
+	}
+	const channel = channelOptions.find((option) => option.value === workflow.notifyChannel)?.short ?? workflow.notifyChannel
+	return `${mode} (${channel})`
+}
+
+function boardLabel(boardId) {
+	const board = boards.value.find((entry) => entry.id === boardId)
+	return board ? board.title : `#${boardId}`
+}
+
+function yesNo(value) {
+	return value ? 'Ja' : 'Nein'
+}
+
 function stackLabel(boardId, stackId) {
 	const stacks = stacksByBoard[boardId]
 	if (!stacks) {
@@ -281,23 +385,6 @@ async function loadStacksFor(boardId) {
 	stacksByBoard[boardId] = await fetchStacks(boardId).catch(() => null)
 }
 
-/**
- * Labels and participants of a board — needed only to judge whether a stored
- * filter can still match anything, so this is fetched just for the boards of
- * workflows that actually use filters.
- */
-async function loadFiltersFor(boardId) {
-	if (!boardId || labelsByBoard[boardId]) {
-		return
-	}
-	const [labels, participants] = await Promise.all([
-		fetchLabels(boardId).catch(() => null),
-		fetchParticipants(boardId).catch(() => null),
-	])
-	labelsByBoard[boardId] = labels
-	participantsByBoard[boardId] = participants
-}
-
 async function loadAll() {
 	loading.value = true
 	loadError.value = ''
@@ -305,13 +392,7 @@ async function loadAll() {
 		const [loadedWorkflows, loadedBoards] = await Promise.all([fetchWorkflows(), fetchBoards()])
 		workflows.value = loadedWorkflows
 		boards.value = loadedBoards
-		await Promise.all(loadedWorkflows.flatMap((workflow) => {
-			const pending = [loadStacksFor(workflow.boardId)]
-			if (workflow.filterLabelIds.length || workflow.filterUserIds.length) {
-				pending.push(loadFiltersFor(workflow.boardId))
-			}
-			return pending
-		}))
+		await Promise.all(loadedWorkflows.map((workflow) => loadStacksFor(workflow.boardId)))
 	} catch (e) {
 		loadError.value = 'Konnte Workflows oder Deck-Boards nicht laden. Ist die Deck-App aktiviert?'
 	} finally {
@@ -320,36 +401,25 @@ async function loadAll() {
 }
 
 /**
- * Fills the stack/label/user dropdowns for a board without touching the
- * current selection — that separation matters: editing a workflow has to
- * load the same options but must keep the stored stacks and filters.
+ * Fills the stack dropdowns for a board without touching the current
+ * selection — that separation matters: editing a workflow has to load the
+ * same options but must keep the stored stacks.
  */
 async function loadBoardOptions(boardId) {
 	stackOptions.value = []
-	labelOptions.value = []
-	participantOptions.value = []
 	loadedBoardId.value = boardId ?? null
 
 	if (!boardId) {
 		return
 	}
 
-	// One failing endpoint must not take the other two dropdowns down with it.
-	const [stacks, labels, participants] = await Promise.all([
-		fetchStacks(boardId).catch(() => null),
-		fetchLabels(boardId).catch(() => null),
-		fetchParticipants(boardId).catch(() => null),
-	])
+	const stacks = await fetchStacks(boardId).catch(() => null)
 
-	// Feed the overview's caches too, so its red markers agree with what the
+	// Feed the overview's cache too, so its red markers agree with what the
 	// form just loaded. `null` propagates on purpose: it means "unknown".
 	stacksByBoard[boardId] = stacks
-	labelsByBoard[boardId] = labels
-	participantsByBoard[boardId] = participants
 
 	stackOptions.value = (stacks ?? []).map((stack) => ({ value: stack.id, label: stack.title }))
-	labelOptions.value = (labels ?? []).map((label) => ({ value: label.id, label: label.title }))
-	participantOptions.value = (participants ?? []).map((participant) => ({ value: participant.uid, label: participant.displayName }))
 }
 
 /**
@@ -364,8 +434,9 @@ async function onBoardChange(boardId) {
 
 	form.sourceStackId = null
 	form.targetStackId = null
-	form.filterUserIds = []
-	form.filterLabelIds = []
+	if (boardId) {
+		archivedBoardNote.value = ''
+	}
 
 	await loadBoardOptions(boardId)
 }
@@ -374,25 +445,33 @@ function startCreate() {
 	Object.assign(form, emptyForm())
 	editingId.value = null
 	formError.value = ''
+	archivedBoardNote.value = ''
 	loadBoardOptions(null)
 	showForm.value = true
 }
 
 async function editWorkflow(workflow) {
+	// An archived board is not offered and would be refused on save, so the
+	// form starts without it rather than holding an id no option matches.
+	const archivedBoard = boards.value.find((board) => board.id === workflow.boardId && board.archived)
+	archivedBoardNote.value = archivedBoard
+		? `Das Board „${archivedBoard.title}“ ist archiviert. Wähle ein anderes Board oder hole es in Deck aus dem Archiv.`
+		: ''
+
 	Object.assign(form, {
 		title: workflow.title,
-		boardId: workflow.boardId,
-		sourceStackId: workflow.sourceStackId,
-		targetStackId: workflow.targetStackId,
-		filterUserIds: [...workflow.filterUserIds],
-		filterLabelIds: [...workflow.filterLabelIds],
-		notifyEmail: workflow.notifyEmail,
+		boardId: archivedBoard ? null : workflow.boardId,
+		sourceStackId: archivedBoard ? null : workflow.sourceStackId,
+		targetStackId: archivedBoard ? null : workflow.targetStackId,
+		triggerDate: workflow.triggerDate || 'due',
+		notifyMode: workflow.notifyMode,
+		notifyChannel: workflow.notifyChannel || 'mail',
 		enabled: workflow.enabled,
 	})
 	editingId.value = workflow.id
 	formError.value = ''
 	showForm.value = true
-	await loadBoardOptions(workflow.boardId)
+	await loadBoardOptions(form.boardId)
 }
 
 function cancelForm() {
@@ -494,6 +573,22 @@ onMounted(loadAll)
 	border-radius: var(--border-radius-large);
 }
 
+.wfda-notify {
+	display: flex;
+	flex-direction: column;
+	gap: 4px;
+}
+
+.wfda-notify legend {
+	font-weight: bold;
+	margin-bottom: 4px;
+}
+
+.wfda-hint {
+	color: var(--color-text-maxcontrast);
+	font-size: 0.9em;
+}
+
 .wfda-form-actions {
 	display: flex;
 	gap: 8px;

src/api.js

@@ -33,13 +33,3 @@ export async function fetchStacks(boardId) {
 	const { data } = await axios.get(ocsUrl(`/boards/${boardId}/stacks`))
 	return data.ocs.data
 }
-
-export async function fetchLabels(boardId) {
-	const { data } = await axios.get(ocsUrl(`/boards/${boardId}/labels`))
-	return data.ocs.data
-}
-
-export async function fetchParticipants(boardId) {
-	const { data } = await axios.get(ocsUrl(`/boards/${boardId}/participants`))
-	return data.ocs.data
-}

src/main.js

@@ -3,5 +3,7 @@ import PersonalSettings from './PersonalSettings.vue'
 
 const mountPoint = document.getElementById('workflow-deck-automation-personal-settings')
 if (mountPoint) {
-	createApp(PersonalSettings).mount(mountPoint)
+	createApp(PersonalSettings, {
+		notificationsAvailable: mountPoint.dataset.notificationsAvailable === '1',
+	}).mount(mountPoint)
 }

templates/settings/personal.php

@@ -1,4 +1,5 @@
 <?php
 /** @var array $_ */
 ?>
-<div id="workflow-deck-automation-personal-settings"></div>
+<div id="workflow-deck-automation-personal-settings"
+	data-notifications-available="<?php p($_['notificationsAvailable'] ? '1' : '0'); ?>"></div>

tests/Unit/Service/LoopDetectorTest.php

@@ -0,0 +1,76 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OCA\WorkflowDeckAutomation\Tests\Unit\Service;
+
+use OCA\WorkflowDeckAutomation\Service\LoopDetector;
+use PHPUnit\Framework\TestCase;
+
+class LoopDetectorTest extends TestCase {
+	public function testNoWorkflowsHaveNoLoop(): void {
+		$this->assertSame([], LoopDetector::findLoopingWorkflows([]));
+	}
+
+	public function testSameSourceAndTargetIsALoop(): void {
+		$this->assertSame([1], LoopDetector::findLoopingWorkflows([1 => [10, 10]]));
+	}
+
+	public function testTwoWorkflowsBackAndForthAreALoop(): void {
+		$this->assertSame([1, 2], LoopDetector::findLoopingWorkflows([
+			1 => [10, 20],
+			2 => [20, 10],
+		]));
+	}
+
+	public function testLongerCircleIsALoop(): void {
+		$this->assertSame([1, 2, 3], LoopDetector::findLoopingWorkflows([
+			1 => [10, 20],
+			2 => [20, 30],
+			3 => [30, 10],
+		]));
+	}
+
+	public function testChainIsNoLoop(): void {
+		$this->assertSame([], LoopDetector::findLoopingWorkflows([
+			1 => [10, 20],
+			2 => [20, 30],
+		]));
+	}
+
+	public function testOnlyWorkflowsOnTheCircleAreReported(): void {
+		// 1 feeds into the circle 2 → 3 → 2 and 4 leads out of it; neither
+		// lies on it.
+		$this->assertSame([2, 3], LoopDetector::findLoopingWorkflows([
+			1 => [10, 20],
+			2 => [20, 30],
+			3 => [30, 20],
+			4 => [30, 40],
+		]));
+	}
+
+	public function testTwoWorkflowsFromTheSameSourceAreNoLoop(): void {
+		$this->assertSame([], LoopDetector::findLoopingWorkflows([
+			1 => [10, 20],
+			2 => [10, 30],
+		]));
+	}
+
+	public function testFindPathListsTheWorkflowsInOrder(): void {
+		$edges = [
+			7 => [30, 10],
+			5 => [10, 20],
+			6 => [20, 30],
+		];
+		$this->assertSame([5, 6], LoopDetector::findPath($edges, 10, 30));
+		$this->assertSame([6, 7], LoopDetector::findPath($edges, 20, 10));
+	}
+
+	public function testFindPathWithoutConnectionIsNull(): void {
+		$this->assertNull(LoopDetector::findPath([1 => [10, 20]], 20, 10));
+	}
+
+	public function testFindPathToItselfIsEmpty(): void {
+		$this->assertSame([], LoopDetector::findPath([], 10, 10));
+	}
+}

tests/Unit/Service/NotificationPolicyTest.php

@@ -0,0 +1,82 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OCA\WorkflowDeckAutomation\Tests\Unit\Service;
+
+use OCA\WorkflowDeckAutomation\Service\NotificationPolicy;
+use PHPUnit\Framework\TestCase;
+
+class NotificationPolicyTest extends TestCase {
+	public function testOffNeverNotifies(): void {
+		$this->assertFalse(NotificationPolicy::shouldNotify('off', false, true));
+		// Not even the owner of an unshared board — "off" is "off" in Deck too.
+		$this->assertFalse(NotificationPolicy::shouldNotify('off', true, true));
+	}
+
+	public function testAllAlwaysNotifies(): void {
+		$this->assertTrue(NotificationPolicy::shouldNotify('all', false, false));
+		$this->assertTrue(NotificationPolicy::shouldNotify('all', true, false));
+	}
+
+	public function testAssignedNotifiesOnlyAssignedUsers(): void {
+		$this->assertTrue(NotificationPolicy::shouldNotify('assigned', false, true));
+		$this->assertFalse(NotificationPolicy::shouldNotify('assigned', false, false));
+	}
+
+	public function testOwnerOfUnsharedBoardIsNotifiedWithAssigned(): void {
+		$this->assertTrue(NotificationPolicy::shouldNotify('assigned', true, false));
+	}
+
+	public function testUnknownSettingFallsBackToDeckDefault(): void {
+		$this->assertTrue(NotificationPolicy::shouldNotify('', false, true));
+		$this->assertFalse(NotificationPolicy::shouldNotify('bogus', false, false));
+		$this->assertTrue(NotificationPolicy::shouldNotify('bogus', true, false));
+	}
+
+	public function testAssignmentIsOnlyLookedUpWhenItMatters(): void {
+		$lookup = function (): bool {
+			$this->fail('assignment lookup must not run');
+		};
+		$this->assertFalse(NotificationPolicy::shouldNotify('off', false, $lookup));
+		$this->assertTrue(NotificationPolicy::shouldNotify('all', false, $lookup));
+		$this->assertTrue(NotificationPolicy::shouldNotify('assigned', true, $lookup));
+
+		$this->assertTrue(NotificationPolicy::shouldNotify('assigned', false, static fn (): bool => true));
+		$this->assertFalse(NotificationPolicy::shouldNotify('assigned', false, static fn (): bool => false));
+	}
+
+	public function testModes(): void {
+		foreach (['off', 'owner', 'board'] as $mode) {
+			$this->assertTrue(NotificationPolicy::isValidMode($mode));
+		}
+		$this->assertFalse(NotificationPolicy::isValidMode(''));
+		$this->assertFalse(NotificationPolicy::isValidMode('all'));
+	}
+
+	public function testChannels(): void {
+		foreach (['mail', 'notification', 'both'] as $channel) {
+			$this->assertTrue(NotificationPolicy::isValidChannel($channel));
+		}
+		$this->assertFalse(NotificationPolicy::isValidChannel(''));
+		$this->assertFalse(NotificationPolicy::isValidChannel('push'));
+	}
+
+	public function testChannelDecidesMailAndNotification(): void {
+		$this->assertTrue(NotificationPolicy::sendsMail('mail'));
+		$this->assertFalse(NotificationPolicy::sendsNotification('mail'));
+
+		$this->assertFalse(NotificationPolicy::sendsMail('notification'));
+		$this->assertTrue(NotificationPolicy::sendsNotification('notification'));
+
+		$this->assertTrue(NotificationPolicy::sendsMail('both'));
+		$this->assertTrue(NotificationPolicy::sendsNotification('both'));
+	}
+
+	public function testUnknownChannelFallsBackToMail(): void {
+		$this->assertTrue(NotificationPolicy::sendsMail(''));
+		$this->assertFalse(NotificationPolicy::sendsNotification(''));
+		$this->assertTrue(NotificationPolicy::sendsMail('bogus'));
+		$this->assertFalse(NotificationPolicy::sendsNotification('bogus'));
+	}
+}

tests/Unit/Service/TriggerDateTest.php

@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OCA\WorkflowDeckAutomation\Tests\Unit\Service;
+
+use OCA\WorkflowDeckAutomation\Service\TriggerDate;
+use PHPUnit\Framework\TestCase;
+
+class TriggerDateTest extends TestCase {
+	public function testKnownTriggersAreValid(): void {
+		$this->assertTrue(TriggerDate::isValid('due'));
+		$this->assertTrue(TriggerDate::isValid('start'));
+	}
+
+	public function testUnknownTriggersAreInvalid(): void {
+		$this->assertFalse(TriggerDate::isValid(''));
+		$this->assertFalse(TriggerDate::isValid('duedate'));
+		$this->assertFalse(TriggerDate::isValid('Start'));
+	}
+
+	public function testReasonNamesTheTriggeringDate(): void {
+		$this->assertSame('ist überfällig', TriggerDate::describeReason('due'));
+		$this->assertSame('hat ihr Startdatum erreicht', TriggerDate::describeReason('start'));
+	}
+
+	public function testUnknownTriggerIsDescribedAsDue(): void {
+		// Notifications stored before the column existed carry no trigger.
+		$this->assertSame('ist überfällig', TriggerDate::describeReason(''));
+	}
+}

tests/Unit/Service/WorkflowRunnerFilterTest.php

@@ -1,83 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace OCA\WorkflowDeckAutomation\Tests\Unit\Service;
-
-use DateTimeImmutable;
-use OCA\WorkflowDeckAutomation\Service\WorkflowRunner;
-use PHPUnit\Framework\TestCase;
-
-class WorkflowRunnerFilterTest extends TestCase {
-	public function testIsOverdueReturnsFalseWithoutDueDate(): void {
-		$this->assertFalse(WorkflowRunner::isOverdue(null, new DateTimeImmutable('2026-01-15 12:00:00')));
-	}
-
-	public function testIsOverdueReturnsFalseForFutureDueDate(): void {
-		$now = new DateTimeImmutable('2026-01-15 12:00:00');
-		$this->assertFalse(WorkflowRunner::isOverdue($now->modify('+1 hour'), $now));
-		$this->assertFalse(WorkflowRunner::isOverdue($now->modify('+3 days'), $now));
-	}
-
-	public function testIsOverdueReturnsTrueForPastDueDate(): void {
-		$now = new DateTimeImmutable('2026-01-15 12:00:00');
-		$this->assertTrue(WorkflowRunner::isOverdue($now->modify('-1 hour'), $now));
-		$this->assertTrue(WorkflowRunner::isOverdue($now->modify('-30 days'), $now));
-	}
-
-	public function testIsOverdueReturnsTrueForADueTimeEarlierTheSameDay(): void {
-		// Regression: comparing whole calendar days (as Deck's own
-		// Card::getDaysUntilDue() does) reports a card due earlier today as
-		// "0 days until due", not overdue, until the calendar date rolls
-		// over - holding every card back for up to 24h after it actually
-		// fell due. isOverdue() must compare the real timestamps instead.
-		$now = new DateTimeImmutable('2026-01-15 12:00:00');
-		$this->assertTrue(WorkflowRunner::isOverdue(new DateTimeImmutable('2026-01-15 06:00:00'), $now));
-	}
-
-	public function testNoFiltersMatchesAnyCard(): void {
-		$this->assertTrue(WorkflowRunner::cardMatchesFilters(['alice'], [1, 2], [], []));
-		$this->assertTrue(WorkflowRunner::cardMatchesFilters([], [], [], []));
-	}
-
-	public function testUserFilterIsOrAgainstAssignedUsers(): void {
-		$this->assertTrue(WorkflowRunner::cardMatchesFilters(['alice', 'bob'], [], ['bob', 'carol'], []));
-		$this->assertFalse(WorkflowRunner::cardMatchesFilters(['alice'], [], ['bob', 'carol'], []));
-	}
-
-	public function testLabelFilterIsOrAgainstCardLabels(): void {
-		$this->assertTrue(WorkflowRunner::cardMatchesFilters([], [1, 2], [], [2, 3]));
-		$this->assertFalse(WorkflowRunner::cardMatchesFilters([], [1], [], [2, 3]));
-	}
-
-	public function testUserAndLabelFiltersAreCombinedWithAnd(): void {
-		// user matches, label does not -> overall false
-		$this->assertFalse(WorkflowRunner::cardMatchesFilters(['alice'], [1], ['alice'], [99]));
-		// both match -> true
-		$this->assertTrue(WorkflowRunner::cardMatchesFilters(['alice'], [1], ['alice'], [1]));
-	}
-
-	public function testEmptyFiltersAreNeverDead(): void {
-		// "no restriction" must not be reported as a broken filter, however
-		// little the board has left to offer.
-		$this->assertSame([], WorkflowRunner::findDeadFilters([], [], [], []));
-		$this->assertSame([], WorkflowRunner::findDeadFilters([], [], ['alice'], [1]));
-	}
-
-	public function testFilterSurvivesAsLongAsOneEntryRemains(): void {
-		$this->assertSame([], WorkflowRunner::findDeadFilters(['alice', 'bob'], [1, 2], ['bob'], [2]));
-	}
-
-	public function testFilterIsDeadWhenEveryEntryIsGone(): void {
-		$this->assertSame(['label'], WorkflowRunner::findDeadFilters([], [1, 2], [], [3]));
-		$this->assertSame(['user'], WorkflowRunner::findDeadFilters(['alice'], [], ['bob'], []));
-		$this->assertSame(
-			['label', 'user'],
-			WorkflowRunner::findDeadFilters(['alice'], [1], ['bob'], [2]),
-		);
-	}
-
-	public function testAnEmptyBoardKillsOnlyTheFiltersThatAreSet(): void {
-		$this->assertSame(['label'], WorkflowRunner::findDeadFilters([], [1], [], []));
-	}
-}

tests/Unit/Service/WorkflowRunnerTest.php

@@ -0,0 +1,67 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OCA\WorkflowDeckAutomation\Tests\Unit\Service;
+
+use DateTimeImmutable;
+use DateTimeZone;
+use OCA\WorkflowDeckAutomation\Service\WorkflowRunner;
+use PHPUnit\Framework\TestCase;
+
+class WorkflowRunnerTest extends TestCase {
+	private static function utc(string $time): DateTimeImmutable {
+		return new DateTimeImmutable($time, new DateTimeZone('UTC'));
+	}
+
+	public function testHasPassedReturnsFalseWithoutDate(): void {
+		$this->assertFalse(WorkflowRunner::hasPassed(null, self::utc('2026-01-15 12:00:00')));
+	}
+
+	public function testHasPassedReturnsFalseForFutureDate(): void {
+		$now = self::utc('2026-01-15 12:00:00');
+		$this->assertFalse(WorkflowRunner::hasPassed($now->modify('+1 hour'), $now));
+		$this->assertFalse(WorkflowRunner::hasPassed($now->modify('+3 days'), $now));
+	}
+
+	public function testHasPassedReturnsTrueForPastDate(): void {
+		$now = self::utc('2026-01-15 12:00:00');
+		$this->assertTrue(WorkflowRunner::hasPassed($now->modify('-1 hour'), $now));
+		$this->assertTrue(WorkflowRunner::hasPassed($now->modify('-30 days'), $now));
+	}
+
+	public function testHasPassedReturnsTrueForATimeEarlierTheSameDay(): void {
+		// Regression: comparing whole calendar days (as Deck's own
+		// Card::getDaysUntilDue() does) reports a card due earlier today as
+		// "0 days until due", not overdue, until the calendar date rolls
+		// over - holding every card back for up to 24h after it actually
+		// fell due. hasPassed() must compare the real timestamps instead.
+		$now = self::utc('2026-01-15 12:00:00');
+		$this->assertTrue(WorkflowRunner::hasPassed(self::utc('2026-01-15 06:00:00'), $now));
+	}
+
+	public function testHasPassedReadsTheStoredWallClockAsUtc(): void {
+		// What Entity hydration produces if PHP's default zone is not UTC:
+		// the stored UTC wall clock "12:00", tagged with the local zone.
+		$date = new DateTimeImmutable('2026-07-15 12:00:00', new DateTimeZone('Europe/Berlin'));
+
+		// Taken at face value that would be 10:00 UTC and already passed.
+		$this->assertFalse(WorkflowRunner::hasPassed($date, self::utc('2026-07-15 11:30:00')));
+		$this->assertTrue(WorkflowRunner::hasPassed($date, self::utc('2026-07-15 12:00:01')));
+	}
+
+	public function testHasPassedComparesNowAsAnAbsoluteInstant(): void {
+		$date = self::utc('2026-07-15 12:00:00');
+		$berlin = new DateTimeZone('Europe/Berlin');
+
+		// 13:30 in Berlin (CEST) is 11:30 UTC - not yet passed.
+		$this->assertFalse(WorkflowRunner::hasPassed($date, new DateTimeImmutable('2026-07-15 13:30:00', $berlin)));
+		// 14:30 in Berlin is 12:30 UTC - passed.
+		$this->assertTrue(WorkflowRunner::hasPassed($date, new DateTimeImmutable('2026-07-15 14:30:00', $berlin)));
+	}
+
+	public function testHasPassedIsFalseAtTheExactInstant(): void {
+		$now = self::utc('2026-01-15 12:00:00');
+		$this->assertFalse(WorkflowRunner::hasPassed($now, $now));
+	}
+}