feat: add hidden files API endpoints

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

server/routes/hidden.py

@@ -1,3 +1,25 @@
-from fastapi import APIRouter
+from fastapi import APIRouter, Query
 
 router = APIRouter()
+
+
+def _db():
+    from ..app import db
+    return db
+
+
+@router.post("/hidden/{filename}")
+def hide_file(filename: str, profile: str = Query("default")):
+    _db().hide_file(filename, profile)
+    return {"hidden": filename}
+
+
+@router.delete("/hidden/{filename}")
+def unhide_file(filename: str, profile: str = Query("default")):
+    _db().unhide_file(filename, profile)
+    return {"unhidden": filename}
+
+
+@router.get("/hidden")
+def get_hidden(profile: str = Query("default")):
+    return sorted(_db().get_hidden_files(profile))