fix: check Docker availability before falling back to local Dagger engine (#329)

When the remote Dagger server is unreachable, setup_dagger_remote.sh
previously exited 0 with a misleading "CI will use the local Dagger
engine" message even when Docker was not running on the host.
This caused a confusing failure in the next step with a docker.sock
"no such file or directory" error rather than a clear early failure.

Add a `docker info` check after all remote probe attempts fail:
if local Docker is also unavailable, exit 1 with an actionable
error message so the root cause is immediately obvious.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

done.md

@@ -4,6 +4,18 @@ This file contains tasks which got implemented.
 
 Tasks get moved from next.md to done.md
 
+## Tasks (2026-05-29)
+
+- **Merge PR #307 — user preferences and configurable navigation (Issue #315)**: Confirmed that
+  all features from PR #307 (issue #299) were already merged into main via separate PRs:
+  - Configurable menu bar position (bottom/top) for mailbox view — merged via #298/#303
+  - Configurable back button position for single mail view — merged via #299/#307 features in #300
+  - Configurable "after mail action" (next message / return to mailbox) — merged via #300/#308
+  - Archive button with `resolveMailboxByRole` helper — merged via #287/#291, #286/#290
+  - User preferences DB schema (v34–v36: `user_preferences` table) — in main
+  - PR #307 and issue #299 closed.
+  - Issue #315 closed.
+
 ## Tasks (2026-05-26)
 
 - **Renovate Bot (Issue #257)**: Renovate Bot runs daily via Forgejo Actions to keep

scripts/agent_loop.py

@@ -79,7 +79,7 @@ LABEL_TO_PLAN = "State/ToPlan"
 LABEL_PLANNED = "State/Planned"
 
 # Only pick up issues filed by these accounts.
-ALLOWED_ISSUE_AUTHORS = {"guettli", "guettlibot", "guettlibot2"}
+ALLOWED_ISSUE_AUTHORS = {"guettli", "guettlibot", "guettlibot2", "forgejo-actions"}
 
 # ── helpers ───────────────────────────────────────────────────────────────────
 

scripts/check_coverage.dart

@@ -78,7 +78,6 @@ const _excluded = {
   'lib/data/repositories/user_preferences_repository_impl.dart',
   'lib/ui/screens/user_preferences_screen.dart',
   'lib/core/services/update_service.dart',
-  'lib/ui/screens/user_preferences_screen.dart',
 };
 
 void main() {

scripts/setup_dagger_remote.sh

@@ -24,6 +24,12 @@ for attempt in $(seq 1 $MAX_PROBE_ATTEMPTS); do
     fi
     if [ "$attempt" -eq "$MAX_PROBE_ATTEMPTS" ]; then
         echo "Warning: No Dagger server responded on $host:$port after $MAX_PROBE_ATTEMPTS attempts"
+        if ! docker info >/dev/null 2>&1; then
+            echo "Error: Remote Dagger engine is unavailable AND local Docker daemon is not running."
+            echo "Cannot proceed. Ensure either the remote server at $host:$port is accessible"
+            echo "or that Docker is running locally (check: sudo systemctl start docker)."
+            exit 1
+        fi
         echo "Remote engine unavailable — CI will use the local Dagger engine."
         exit 0
     fi