feat: fix template preview links, default chat action, update default templates

- Fix sanitizePreview regex to match literal quotes instead of " entities
- Default telegram chat_action to "typing" in model and frontend
- Change "photo(s)" to "file(s)" in default templates (EN/RU)
- Remove redundant album URL line from assets_added templates
- Auto-refresh system-owned templates from files on server startup

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

packages/server/src/notify_bridge_server/main.py

@@ -78,7 +78,7 @@ async def health():
 
 
 async def _seed_default_templates():
-    """Seed default templates on first startup if none exist."""
+    """Seed or update default (system-owned) templates on startup."""
     from sqlmodel import func, select
     from sqlmodel.ext.asyncio.session import AsyncSession
     from .database.engine import get_engine
@@ -89,22 +89,36 @@ async def _seed_default_templates():
     async with AsyncSession(engine) as session:
         result = await session.exec(select(func.count()).select_from(TemplateConfig))
         count = result.one()
-        if count > 0:
-            return
 
-        for locale in ("en", "ru"):
-            slots = load_default_templates(locale)
-            if not slots:
-                continue
-            name = f"Default ({locale.upper()})"
-            config = TemplateConfig(
-                user_id=0,
-                provider_type="immich",
-                name=name,
-                description=f"Default Immich templates ({locale.upper()})",
-                **slots,
+        if count == 0:
+            # First startup — seed all defaults
+            for locale in ("en", "ru"):
+                slots = load_default_templates(locale)
+                if not slots:
+                    continue
+                name = f"Default ({locale.upper()})"
+                config = TemplateConfig(
+                    user_id=0,
+                    provider_type="immich",
+                    name=name,
+                    description=f"Default Immich templates ({locale.upper()})",
+                    **slots,
+                )
+                session.add(config)
+        else:
+            # Update existing system-owned templates from files
+            result = await session.exec(
+                select(TemplateConfig).where(TemplateConfig.user_id == 0)
             )
-            session.add(config)
+            system_configs = result.all()
+            for config in system_configs:
+                locale = "ru" if "(RU)" in config.name else "en"
+                slots = load_default_templates(locale)
+                if not slots:
+                    continue
+                for key, value in slots.items():
+                    setattr(config, key, value)
+                session.add(config)
 
         await session.commit()