import filters for pixiv sidecars, tag filtering, and favicon generation

app/main.py

@@ -423,7 +423,7 @@ def gallery_jump():
     )
 
 
-def _get_tags_with_previews(kind=None, limit=35, offset=0, images_per_tag=3):
+def _get_tags_with_previews(kind=None, limit=35, offset=0, images_per_tag=3, search=None):
     """
     Helper function to get tags with counts and preview images.
     Returns (tag_data list, total_count, has_more).
@@ -436,6 +436,8 @@ def _get_tags_with_previews(kind=None, limit=35, offset=0, images_per_tag=3):
     count_q = db.session.query(func.count(Tag.id))
     if kind:
         count_q = count_q.filter(Tag.kind == kind)
+    if search:
+        count_q = count_q.filter(Tag.name.ilike(f'%{search}%'))
     total_count = count_q.scalar()
 
     # Query 1: Get tags with image counts (paginated)
@@ -446,6 +448,8 @@ def _get_tags_with_previews(kind=None, limit=35, offset=0, images_per_tag=3):
 
     if kind:
         q = q.filter(Tag.kind == kind)
+    if search:
+        q = q.filter(Tag.name.ilike(f'%{search}%'))
 
     tags_with_counts = q.order_by(Tag.name.asc()).offset(offset).limit(limit).all()
 
@@ -505,22 +509,25 @@ def tag_list():
     Generic tag explorer with infinite scroll:
       /tags            -> all tags
       /tags?kind=user  -> only user tags
+      /tags?search=xyz -> tags matching search term
       etc.
     Shows a few preview images per tag.
     Initially loads 35 tags, more loaded via API as user scrolls.
     """
     kind = request.args.get('kind')
+    search = request.args.get('search', '').strip() or None
     limit = 35
     images_per_tag = 3
 
     tag_data, total_count, has_more = _get_tags_with_previews(
-        kind=kind, limit=limit, offset=0, images_per_tag=images_per_tag
+        kind=kind, limit=limit, offset=0, images_per_tag=images_per_tag, search=search
     )
 
     return render_template('tags_list.html',
                            tag_data=tag_data,
                            images_per_tag=images_per_tag,
                            active_kind=kind,
+                           search_query=search or '',
                            total_count=total_count,
                            has_more=has_more,
                            page_size=limit)
@@ -533,12 +540,13 @@ def api_tags_list():
     Returns JSON with tag cards HTML and pagination info.
     """
     kind = request.args.get('kind')
+    search = request.args.get('search', '').strip() or None
     offset = request.args.get('offset', 0, type=int)
     limit = request.args.get('limit', 35, type=int)
     images_per_tag = 3
 
     tag_data, total_count, has_more = _get_tags_with_previews(
-        kind=kind, limit=limit, offset=offset, images_per_tag=images_per_tag
+        kind=kind, limit=limit, offset=offset, images_per_tag=images_per_tag, search=search
     )
 
     # Render tag cards to HTML