Adds real-time toast notifications to all admin pages for AI pipeline
job progress. The browser subscribes to an SSE endpoint
(GET /admin/pipeline/events) which polls the DB every 2 seconds and
emits events whenever a job's step or status changes.
- AIPipelineJob gains updatedAt (migration 20260519020000), bumped on
every state-change method, with an index for efficient polling
- AIPipelineJobRepositoryInterface/Doctrine get findUpdatedSince()
- PipelineStreamController streams SSE with per-connection dedup and
auto-reconnect (retry: 3000); streams for 90 s then signals reconnect
- pipeline-notifications.js handles EventSource, shows colour-coded
toasts (queued/processing/completed/failed/needs_review) and is loaded
globally via DashboardController::configureAssets()
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Simon Kuehn
4c16f8cd68