Add bulk remove all 10/10 ratings

Bouton dans le header (visible uniquement en filtre 10/10) qui supprime
toutes les notes 10/10 en une fois via l'API Trakt bulk.

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

main.py

@@ -199,4 +199,33 @@ async def remove_rating(request: Request, trakt_id: int):
     return {"success": True}
 
 
+@app.delete("/api/rates/all10")
+async def remove_all_10(request: Request):
+    token = request.session.get("access_token")
+    if not token:
+        raise HTTPException(401, "Not authenticated")
+
+    trakt = TraktClient(TRAKT_CLIENT_ID, token)
+    _, ratings = await trakt.get_watched_and_ratings()
+    ids = [{"ids": r["movie"]["ids"]} for r in ratings if r["rating"] == 10]
+
+    if not ids:
+        return {"deleted": 0}
+
+    import asyncio, httpx
+    async with httpx.AsyncClient(timeout=60) as client:
+        tasks = [
+            client.post(
+                f"{TraktClient.BASE_URL}/sync/ratings/remove",
+                headers=trakt.headers,
+                json={"movies": ids[i:i + 100]},
+            )
+            for i in range(0, len(ids), 100)
+        ]
+        responses = await asyncio.gather(*tasks)
+
+    cache_del(f"movies_{token[:16]}")
+    return {"deleted": len(ids)}
+
+
 app.mount("/static", StaticFiles(directory="static"), name="static")