feat: fix search, poster serving, and add hover overlay UI for cards

- Fix search store exports to match component expectations (inputValue,
  bangumiList, onSearch) and transform data to SearchResult format
- Fix poster endpoint path check that incorrectly blocked all requests
- Add resolvePosterUrl utility to handle both external URLs and local paths
- Move tags into hover overlay on homepage cards and calendar cards
- Show title and tags on poster hover with dark semi-transparent styling
- Add downloader API, store, and page
- Update backend to async patterns and uv migration changes
- Remove .claude/settings.local.json from tracking

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/src/module/parser/title_parser.py

@@ -31,8 +31,8 @@ class TitleParser:
             logger.warning(f"Cannot parse {torrent_path} with error {e}")
 
     @staticmethod
-    def tmdb_parser(title: str, season: int, language: str):
-        tmdb_info = tmdb_parser(title, language)
+    async def tmdb_parser(title: str, season: int, language: str):
+        tmdb_info = await tmdb_parser(title, language)
         if tmdb_info:
             logger.debug(f"TMDB Matched, official title is {tmdb_info.title}")
             tmdb_season = tmdb_info.last_season if tmdb_info.last_season else season
@@ -43,8 +43,8 @@ class TitleParser:
             return title, season, None, None
 
     @staticmethod
-    def tmdb_poster_parser(bangumi: Bangumi):
-        tmdb_info = tmdb_parser(bangumi.official_title, settings.rss_parser.language)
+    async def tmdb_poster_parser(bangumi: Bangumi):
+        tmdb_info = await tmdb_parser(bangumi.official_title, settings.rss_parser.language)
         if tmdb_info:
             logger.debug(f"TMDB Matched, official title is {tmdb_info.title}")
             bangumi.poster_link = tmdb_info.poster_link
@@ -104,5 +104,5 @@ class TitleParser:
             return None
 
     @staticmethod
-    def mikan_parser(homepage: str) -> tuple[str, str]:
-        return mikan_parser(homepage)
+    async def mikan_parser(homepage: str) -> tuple[str, str]:
+        return await mikan_parser(homepage)