feat: add DELETE endpoint for store entries

- Add DELETE /byae/ideogram/stores/{bucket}/{name} route handler
- Return 400 for invalid bucket/name, 404 for not found, 200 on success
- Mirror error handling pattern from PUT route
- Add deleteStoreEntry() helper in ideogram4_shared.js
- Use same fetch/timeout/error-handling pattern as saveStoreEntry

Co-authored-by: Cursor Agent <cursoragent@cursor.com>

routes.py

@@ -41,6 +41,25 @@ async def put_store_entry(request: web.Request) -> web.Response:
         return web.json_response({"error": "Failed to save"}, status=500)
 
 
+async def delete_store_entry(request: web.Request) -> web.Response:
+    bucket = request.match_info.get("bucket", "")
+    name = request.match_info.get("name", "")
+    if bucket not in ("characters", "objects", "scenes"):
+        return web.json_response({"error": "Invalid bucket"}, status=400)
+    if not name or len(name) > 128:
+        return web.json_response({"error": "Invalid or missing name"}, status=400)
+    try:
+        deleted = store.delete_entry(bucket, name)
+        if not deleted:
+            return web.json_response({"error": "Entry not found"}, status=404)
+        return web.json_response({"ok": True, "bucket": bucket, "name": name})
+    except ValueError as e:
+        return web.json_response({"error": str(e)}, status=400)
+    except Exception:
+        logger.exception("ByAE Ideogram: failed to delete store entry")
+        return web.json_response({"error": "Failed to delete"}, status=500)
+
+
 async def get_bg_stat(request: web.Request) -> web.Response:
     guid = request.match_info.get("guid", "")
     try:
@@ -80,5 +99,6 @@ def register_routes(app) -> None:
     app.add_routes([
         web.get("/byae/ideogram/stores", get_stores),
         web.put("/byae/ideogram/stores/{bucket}/{name}", put_store_entry),
+        web.delete("/byae/ideogram/stores/{bucket}/{name}", delete_store_entry),
         web.get("/byae/ideogram/bg/{guid}/stat", get_bg_stat),
     ])

web/js/ideogram4_shared.js

@@ -45,6 +45,21 @@ export async function saveStoreEntry(bucket, name, data) {
   }
 }
 
+export async function deleteStoreEntry(bucket, name) {
+  const resp = await fetch(`${STORE_API}/${bucket}/${encodeURIComponent(name)}`, {
+    method: "DELETE",
+    signal: AbortSignal.timeout ? AbortSignal.timeout(5000) : undefined
+  });
+  if (!resp.ok) {
+    let msg = `HTTP ${resp.status}`;
+    try {
+      const err = await resp.json();
+      if (err?.error) msg = err.error;
+    } catch (e) { /* ignore */ }
+    throw new Error(msg);
+  }
+}
+
 export function findBuildersOnGraph(graph) {
   if (!graph?._nodes) return [];
   return graph._nodes.filter((n) => nodeClassName(n) === BUILDER_CLASS);