alexei.dolgolyov 3a516d6d58 Fix runtime issues found during live testing ...

- Fix jinja2.sandbox import: use `from jinja2.sandbox import
  SandboxedEnvironment` (dotted attribute access doesn't work)
  in templates.py, sync.py, and notifier.py
- Fix greenlet crash in tracker trigger: SQLAlchemy async sessions
  can't survive across aiohttp.ClientSession context managers.
  Eagerly load all tracker/server data before entering HTTP context.
  Split check_tracker into check_tracker (scheduler, own session)
  and check_tracker_with_session (API, reuses route session).
- Fix _check_album to accept pre-loaded params instead of tracker
  object (avoids lazy-load access after greenlet context break)

Tested end-to-end against live Immich server:
- Server connection + album browsing: OK (39 albums)
- Template creation + preview: OK
- Webhook target creation: OK
- Tracker creation + trigger: OK (initialized 4 assets)
- Second trigger: OK (no_changes detected)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

2026-03-19 15:17:12 +03:00

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