fix(telegram): 重設計訊息格式 + 修復 detail/reanalyze/history 按鈕失效

- format() / format_with_nemotron(): 移除 ═══ 分隔符，改為簡潔換行佈局
- send_approval_card(): 新增 incident_id 參數，傳入 _build_inline_keyboard()
- decision_manager.py: 呼叫 send_approval_card() 時傳入 incident.incident_id
- 問題根因: incident_id 未傳入 _build_inline_keyboard() 導致第二排按鈕從未渲染

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

apps/api/src/services/decision_manager.py

@@ -139,6 +139,8 @@ async def _push_decision_to_telegram(
             nemotron_tools=nemotron_tools,
             nemotron_validation=nemotron_validation,
             nemotron_latency_ms=nemotron_latency_ms,
+            # 2026-04-05 Claude Code: 傳入 incident_id 以啟用 detail/reanalyze/history 按鈕
+            incident_id=incident.incident_id,
         )
 
         # 🔴 發送成功後設置去重 key (TTL 10 分鐘)