feat: Phase 2 triage with keyboard shortcuts J/S/X

Implement /triage GET/POST routes in triage.py blueprint; render
phase2.html with day-grouped photo grid, Alpine.js keyboard tagging
(J=journal, S=story, X/Space=skip), and done-button gated on all-tagged.
Remove stub from albums.py; register triage.bp in __init__.py.

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

services/travel-memories/app/__init__.py

@@ -8,8 +8,9 @@ def create_app(state_dir=None, pages_dir=None):
     app.config["IMMICH_URL"] = os.environ.get("IMMICH_URL", "")
     app.config["IMMICH_API_KEY"] = os.environ.get("IMMICH_API_KEY", "")
 
-    from .routes import albums, proxy, notes, nav
+    from .routes import albums, triage, proxy, notes, nav
     app.register_blueprint(albums.bp)
+    app.register_blueprint(triage.bp)
     app.register_blueprint(proxy.bp)
     app.register_blueprint(notes.bp)
     app.register_blueprint(nav.bp)