Fix rebuild: clear Astro cache and use --force; update site submodule

edit/server.py

@@ -307,8 +307,13 @@ async def upload_asset(file: UploadFile = File(...), user: User = Depends(requir
 @app.post("/rebuild")
 async def rebuild(user: User = Depends(require_auth)) -> JSONResponse:
     try:
+        # Clear Astro content cache so changed files outside site/ are re-read.
+        try:
+            (site_dir / ".astro" / "data-store.json").unlink(missing_ok=True)
+        except Exception:
+            pass
         proc = await asyncio.create_subprocess_exec(
-            "npm", "run", "build",
+            "npm", "run", "build", "--", "--force",
             cwd=site_dir,
             stdout=asyncio.subprocess.PIPE,
             stderr=asyncio.subprocess.PIPE,