Add sidecar Qwen VL prompt recommend, fix queued shot bursts, and leave unused MiniMax identity slots empty.

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

server/api/prompt/presets.get.ts

@@ -0,0 +1,14 @@
+import { listPromptPresets } from '~/server/utils/promptPresets'
+
+export default defineEventHandler(async (event) => {
+  const owner = libraryOwnerKey(event)
+  return {
+    presets: listPromptPresets(owner).map(item => ({
+      id: item.id,
+      name: item.name,
+      description: item.description || '',
+      builtin: Boolean(item.builtin),
+      systemPrompt: item.systemPrompt
+    }))
+  }
+})