update

backend/main.py

@@ -2,6 +2,7 @@ from contextlib import asynccontextmanager
 
 from fastapi import FastAPI
 from fastapi.staticfiles import StaticFiles
+from starlette.middleware.gzip import GZipMiddleware
 
 from logsetup import setup_logging
 
@@ -22,9 +23,24 @@ async def lifespan(app: FastAPI):
     await close_db()
 
 
+class CachedStatic(StaticFiles):
+    """StaticFiles mit Cache-Control: gehashte Assets dauerhaft (immutable),
+    index.html nie cachen (verweist immer auf die aktuellen Asset-Hashes)."""
+    async def get_response(self, path, scope):
+        resp = await super().get_response(path, scope)
+        if path.startswith("assets/"):
+            resp.headers["Cache-Control"] = "public, max-age=31536000, immutable"
+        else:
+            resp.headers["Cache-Control"] = "no-cache"
+        return resp
+
+
 app = FastAPI(title="Creator", lifespan=lifespan)
 
+# gzip für JS/CSS-Bundle + große JSON-Antworten (~1,39 MB JS → ~400 KB).
+app.add_middleware(GZipMiddleware, minimum_size=500)
+
 app.include_router(router)
 
 if FRONTEND_DIST.exists():
-    app.mount("/", StaticFiles(directory=FRONTEND_DIST, html=True), name="frontend")
+    app.mount("/", CachedStatic(directory=FRONTEND_DIST, html=True), name="frontend")