feat: 早报系统重构与功能增强

- 新增常驻调度器 daily/scheduler.py + run-scheduler.ps1（定时生成/推送）
- 新增 daily/bridge_manager.py：Windows 兼容的 Cursor SDK 桥接
- 新增 skills/daily-featured-pick 首推 Skill 与叙事轴/去重逻辑
- 新闻抓取窗口、GitHub 搜索、企微 delta 模式等多项改进
- 补充设计文档与 superpowers 计划/规范
- 新增对应测试（scheduler、featured_pick、github_search、news_fetch_window 等）

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

daily/featured_pick.py

@@ -62,6 +62,10 @@ def load_recent_featured_keys(date_str: str, days: int | None = None) -> set[str
         if not isinstance(data, dict):
             continue
         key = str(data.get("featured_pick_key") or "").strip()
+        if not key:
+            featured = data.get("featured_pick")
+            if isinstance(featured, dict):
+                key = featured_identity_key(featured)
         if key:
             out.add(key)
     return out
@@ -84,7 +88,12 @@ def load_yesterday_featured_key(date_str: str) -> str | None:
     if not isinstance(data, dict):
         return None
     key = str(data.get("featured_pick_key") or "").strip()
-    return key or None
+    if key:
+        return key
+    featured = data.get("featured_pick")
+    if isinstance(featured, dict):
+        return featured_identity_key(featured) or None
+    return None
 
 
 def _featured_rng(date_str: str) -> random.Random: