refactor: Finish timeline migration by removing AssetGrid wrapper

- Remove AssetGrid wrapper 
- Update all remaining route files to import Timeline directly
- Fix component signatures where needed (onThumbnailClick → onAssetOpen)
- Update album-viewer component to use Timeline
- Update geolocation route with proper callback signature

All routes now use Timeline component directly:
- album-viewer component

The major parts of the refactoring are complete.

mise.toml

@@ -300,7 +300,7 @@ run = "tsc --noEmit"
 depends = "web:svelte-kit-sync"
 env._.path = "web/node_modules/.bin"
 dir = "web"
-run = "svelte-check --no-tsconfig --fail-on-warnings --compiler-warnings 'reactive_declaration_non_reactive_property:ignore' --ignore src/lib/components/photos-page/asset-grid.svelte"
+run = "svelte-check --no-tsconfig --fail-on-warnings"
 
 [tasks."web:checklist"]
 run = [