fix(telegram): 首席架構師 R1 修正 — I-1/I-2/M-1/M-2

I-1: webhooks/sentry_webhook/signoz_webhook 三個呼叫者補 TODO 說明
     無 incident_id 是已知限制（Approval 路徑未建 Incident 關聯）
I-2: TestPushRequest 新增 incident_id 欄位，使 QA 可驗證按鈕渲染
M-1: 移除 _build_inline_keyboard 呼叫中多餘的 `or message.incident_id`
M-2: 補充 900/1000 截斷長度差異說明

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

apps/api/src/api/v1/sentry_webhook.py

@@ -443,6 +443,7 @@ async def send_sentry_telegram_alert(
         level = error_context.get("level", "error")
 
         # 發送 Sentry 告警卡片 (含 Y/n 按鈕)
+        # TODO(2026-04-05): Sentry 路徑無 incident_id，待 Sentry→Incident 關聯後補傳
         await telegram.send_approval_card(
             approval_id=approval_id,
             risk_level="high" if level in ["fatal", "error"] else "medium",

apps/api/src/api/v1/signoz_webhook.py

@@ -369,6 +369,7 @@ async def send_signoz_telegram(
         summary = annotations.get("summary", f"SignOz Alert: {alert_name}")
         description = annotations.get("description", "")
 
+        # TODO(2026-04-05): SignOz 路徑無 incident_id，待 SignOz→Incident 關聯後補傳
         await telegram.send_approval_card(
             approval_id=approval_id,
             risk_level=analysis_result.risk_level if analysis_result else (

apps/api/src/api/v1/telegram.py

@@ -60,6 +60,8 @@ class TestPushRequest(BaseModel):
     root_cause: str = "Test alert for development"
     suggested_action: str = "DELETE_POD"
     estimated_downtime: str = "~30s"
+    # 2026-04-05 Claude Code: 支援 incident_id 以測試第二排按鈕渲染
+    incident_id: str = ""
 
 
 # =============================================================================
@@ -234,6 +236,7 @@ async def test_push(
             root_cause=request.root_cause,
             suggested_action=request.suggested_action,
             estimated_downtime=request.estimated_downtime,
+            incident_id=request.incident_id,
         )
 
         return {

apps/api/src/api/v1/webhooks.py

@@ -198,6 +198,8 @@ async def _push_to_telegram_background(
         if hit_count > 1:
             root_cause_with_count = f"[x{hit_count}] {root_cause}"
 
+        # TODO(2026-04-05): Alertmanager 路徑透過 Approval 建立，尚無 incident_id
+        # 待 Approval→Incident 關聯建立後，補傳 incident_id 以啟用 detail/reanalyze/history 按鈕
         await gateway.send_approval_card(
             approval_id=approval_id,
             risk_level=risk_level,

apps/api/src/services/telegram_gateway.py

@@ -293,7 +293,7 @@ class TelegramMessage:
             f"🔍 <a href='{signoz_url}'>SignOz Trace</a>"
         )
 
-        return message[:900]
+        return message[:900]  # 900 字元上限 (nemotron 版用 1000，因有額外 tool 區塊)
 
     def format_with_nemotron(self) -> str:
         """
@@ -1364,7 +1364,7 @@ class TelegramGateway:
             approval_id=approval_id,
             include_auto_tuning=bool(auto_tuning_command),
             auto_tuning_command=auto_tuning_command,
-            incident_id=incident_id or message.incident_id,
+            incident_id=incident_id,
         )
 
         # 發送訊息