新增 17 個 Skills 並完成全員技能配置

- 新增 17 個 SKILL.md（tradermonty + langalpha 來源）：
  breadth-chart-analyst, catalyst-calendar, competitive-analysis,
  comps-analysis, dcf-model, earnings-analysis, earnings-preview,
  earnings-trade-analyzer, edge-concept-synthesizer, edge-hint-extractor,
  options-strategy-advisor, pair-trade-screener, pead-screener,
  portfolio-manager, sector-overview, stanley-druckenmiller-investment,
  theme-detector
- 更新全部 11 個 Agent 的 AGENTS.md（含原本空白的 ceo 與 xiao-an）
- 更新 docs/agent-skill-mapping.md 至 v3.0（71 個配置，62 個技能）
- 台股 + 美股雙市場覆蓋，Skills 均基於真實開源 repo

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

agents/bearish-researcher/AGENTS.md

@@ -6,6 +6,10 @@ skills:
   - us-market-bubble-detector
   - market-top-detector
   - downtrend-duration-analyzer
+  - competitive-analysis
+  - sector-overview
+  - comps-analysis
+  - options-strategy-advisor
 role: general
 icon: "🛡️"
 ---