fix(idaa): resolve BB comment IntegrityError and infinite loop

- Explicitly mapped 'post_id' in create_nested_obj_v3 payload.
- Removed redundant background load trigger in view component.
- Stabilized parent-child relationship for V3 API mapping.
- Resolved persistent 400 error during comment creation.

src/lib/ae_posts/ae_posts__post_comment.ts

@@ -171,6 +171,7 @@ export async function create_ae_obj__post_comment({
         child_type: 'post_comment',
         fields: {
             account_id: account_id,
+            post_id: post_id, // EXPLICIT mapping for backend database insertion
             ...data_kv
         },
         params,