feat: P1 合盘/星座/问答与测测完整设计包及模拟器取证工具

落地 synastry/star/ask API 与 H5 页面，补齐 cece-frontend-re complete-design 证据文档，并加入 Android 模拟器截图抓取脚本。

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

apps/api/migrations/000004_ask.up.sql

@@ -0,0 +1,23 @@
+-- Ask threads & messages (AI 成长助手)
+
+CREATE TABLE IF NOT EXISTS ask_threads (
+  id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
+  user_id uuid NOT NULL REFERENCES users(id),
+  profile_id uuid NOT NULL REFERENCES profiles(id),
+  scene varchar(32) NULL,
+  created_at timestamptz NOT NULL DEFAULT now(),
+  updated_at timestamptz NOT NULL DEFAULT now(),
+  deleted_at timestamptz NULL
+);
+CREATE INDEX IF NOT EXISTS idx_ask_threads_user_id ON ask_threads(user_id);
+CREATE INDEX IF NOT EXISTS idx_ask_threads_profile_id ON ask_threads(profile_id);
+
+CREATE TABLE IF NOT EXISTS ask_messages (
+  id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
+  thread_id uuid NOT NULL REFERENCES ask_threads(id),
+  role varchar(16) NOT NULL CHECK (role IN ('user', 'assistant')),
+  content text NOT NULL,
+  created_at timestamptz NOT NULL DEFAULT now(),
+  deleted_at timestamptz NULL
+);
+CREATE INDEX IF NOT EXISTS idx_ask_messages_thread_id ON ask_messages(thread_id);