feat(api): Sentry init 加入統一 layer/component 標籤

對齊 Prometheus 告警標籤規範 (layer/component/team)
讓 Sentry 事件與 auto_repair 路由決策保持一致

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

apps/api/src/main.py

@@ -158,6 +158,11 @@ if SENTRY_DSN:
         # Phase 15.3: Deep Linking hook
         before_send=_sentry_before_send,
     )
+    # 2026-04-05 Claude Code: 加入統一標籤，對齊 Prometheus/auto_repair layer 規範
+    sentry_sdk.set_tag("layer", "k8s")
+    sentry_sdk.set_tag("component", "api")
+    sentry_sdk.set_tag("host", "k8s-awoooi-prod")
+    sentry_sdk.set_tag("team", "backend")
     logger.info("sentry_initialized", dsn=SENTRY_DSN.split("@")[-1])
 else:
     logger.info("sentry_disabled", reason="SENTRY_DSN not configured")