feat(adr-075): 修復 Telegram 動態按鈕 4 個斷點 + 新增 7 種告警分類

斷點 A: decision_manager 提取 alert_category/notification_type 傳入 send_approval_card
斷點 B: send_approval_card 新增參數並傳遞至 _build_inline_keyboard
斷點 C: 互動型通知 (TYPE-3/4/4D/8M) 禁止發 SRE 群組，防 nonce 洩漏
斷點 D: _CATEGORY_BUTTONS k8s_workload → kubernetes + 新增 6 類按鈕組

classify_alert_early 新增: alertchain_health, flywheel_health, storage,
devops_tool, external_site, ssl_cert, host_resource (從 infrastructure 分離)
Test: 52 classify + 664 total passed

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

apps/api/src/services/decision_manager.py

@@ -246,6 +246,9 @@ async def _push_decision_to_telegram(
             )
         else:
             # TYPE-2 / TYPE-3 / TYPE-4 都走 send_approval_card（按鈕組合由 alert_category 決定）
+            # 2026-04-12 ogt: ADR-075 斷點 A 修復 — 從 Incident 提取 alert_category/notification_type
+            _alert_category = getattr(incident, "alert_category", "") or ""
+            _notification_type = getattr(incident, "notification_type", "") or _notif_type.value if _notif_type else ""
             tg_result = await gateway.send_approval_card(
                 approval_id=approval_id,
                 risk_level=risk_level,
@@ -265,6 +268,8 @@ async def _push_decision_to_telegram(
                 nemotron_tool_model=nemotron_tool_model,
                 nemotron_tool_backend=nemotron_tool_backend,
                 incident_id=incident.incident_id,
+                alert_category=_alert_category,
+                notification_type=_notification_type,
             )
 
         # 2026-04-09 Claude Sonnet 4.6: 存 message_id → 後續狀態更新在原訊息延續