diff --git a/apps/api/tests/test_approval_field_alignment.py b/apps/api/tests/test_approval_field_alignment.py
new file mode 100644
index 00000000..f0513d34
--- /dev/null
+++ b/apps/api/tests/test_approval_field_alignment.py
@@ -0,0 +1,303 @@
+"""
+P1-3: ApprovalRequestCreate 欄位對齊測試
+=========================================
+驗證 SignOz + GitHub Webhook 的 ApprovalRequestCreate 符合 ApprovalRequestBase schema
+
+測試策略 (遵循 feedback_no_mock_testing.md):
+- 直接測試 Pydantic Model 驗證
+- 使用真實 Schema 驗證欄位
+- 不使用 Mock
+
+版本: v1.0
+建立: 2026-03-29 (台北時區)
+建立者: Claude Code (P1-3 Unit Test)
+"""
+
+import pytest
+from pydantic import ValidationError
+
+from src.models.approval import (
+    ApprovalRequestCreate,
+    ApprovalRequestBase,
+    BlastRadius,
+    DataImpact,
+    DryRunCheck,
+    RiskLevel,
+)
+
+
+# =============================================================================
+# Test: ApprovalRequestCreate Schema 驗證
+# =============================================================================
+
+class TestApprovalRequestCreateSchema:
+    """測試 ApprovalRequestCreate 必填欄位"""
+
+    def test_required_fields_present(self):
+        """✅ 必填欄位: action, description, risk_level, requested_by"""
+        request = ApprovalRequestCreate(
+            action="Test Action",
+            description="Test Description",
+            risk_level=RiskLevel.MEDIUM,
+            requested_by="test-webhook",
+        )
+        assert request.action == "Test Action"
+        assert request.description == "Test Description"
+        assert request.risk_level == RiskLevel.MEDIUM
+        assert request.requested_by == "test-webhook"
+
+    def test_missing_action_raises_error(self):
+        """❌ 缺少 action 應拋出 ValidationError"""
+        with pytest.raises(ValidationError) as exc_info:
+            ApprovalRequestCreate(
+                description="Test",
+                risk_level=RiskLevel.MEDIUM,
+                requested_by="test",
+            )
+        assert "action" in str(exc_info.value)
+
+    def test_missing_description_raises_error(self):
+        """❌ 缺少 description 應拋出 ValidationError"""
+        with pytest.raises(ValidationError) as exc_info:
+            ApprovalRequestCreate(
+                action="Test",
+                risk_level=RiskLevel.MEDIUM,
+                requested_by="test",
+            )
+        assert "description" in str(exc_info.value)
+
+    def test_missing_requested_by_raises_error(self):
+        """❌ 缺少 requested_by 應拋出 ValidationError"""
+        with pytest.raises(ValidationError) as exc_info:
+            ApprovalRequestCreate(
+                action="Test",
+                description="Test",
+                risk_level=RiskLevel.MEDIUM,
+            )
+        assert "requested_by" in str(exc_info.value)
+
+
+# =============================================================================
+# Test: BlastRadius Model 驗證
+# =============================================================================
+
+class TestBlastRadiusSchema:
+    """測試 BlastRadius 是 Pydantic Model，不是 Enum"""
+
+    def test_blast_radius_is_model(self):
+        """✅ BlastRadius 是 BaseModel，可接受參數"""
+        br = BlastRadius(
+            affected_pods=1,
+            estimated_downtime="0",
+            related_services=["api"],
+            data_impact=DataImpact.READ_ONLY,
+        )
+        assert br.affected_pods == 1
+        assert br.estimated_downtime == "0"
+        assert br.related_services == ["api"]
+        assert br.data_impact == DataImpact.READ_ONLY
+
+    def test_blast_radius_default_values(self):
+        """✅ BlastRadius 有預設值"""
+        br = BlastRadius()
+        assert br.affected_pods == 0
+        assert br.estimated_downtime == "0"
+        assert br.related_services == []
+        assert br.data_impact == DataImpact.NONE
+
+
+# =============================================================================
+# Test: SignOz Webhook ApprovalRequestCreate 格式
+# =============================================================================
+
+class TestSignOzWebhookApproval:
+    """測試 SignOz Webhook 的 ApprovalRequestCreate 格式"""
+
+    def test_signoz_approval_format(self):
+        """✅ SignOz Webhook 應使用正確欄位格式"""
+        # 模擬 signoz_webhook.py 的建立方式
+        alert_name = "HighErrorRate"
+        service_name = "api-service"
+        description = "Error rate > 5%"
+
+        request = ApprovalRequestCreate(
+            action=f"SignOz Alert: {alert_name}",
+            description=description,
+            risk_level=RiskLevel.HIGH,
+            blast_radius=BlastRadius(
+                affected_pods=1,
+                estimated_downtime="0",
+                related_services=[service_name],
+                data_impact=DataImpact.READ_ONLY,
+            ),
+            dry_run_checks=[],
+            requested_by="signoz-webhook",
+            metadata={
+                "source": "signoz",
+                "alert_name": alert_name,
+                "labels": {"service": service_name},
+            },
+        )
+
+        assert request.action == "SignOz Alert: HighErrorRate"
+        assert request.description == description
+        assert request.requested_by == "signoz-webhook"
+        assert request.blast_radius.related_services == [service_name]
+        assert request.metadata["source"] == "signoz"
+
+
+# =============================================================================
+# Test: GitHub Webhook ApprovalRequestCreate 格式
+# =============================================================================
+
+class TestGitHubWebhookApproval:
+    """測試 GitHub Webhook 的 ApprovalRequestCreate 格式"""
+
+    def test_github_ci_failure_approval_format(self):
+        """✅ GitHub CI Failure 應使用正確欄位格式"""
+        repo = "wooo-ai/awoooi"
+        root_cause = "Build failed due to missing dependency"
+        suggestion = "npm install missing-package"
+
+        request = ApprovalRequestCreate(
+            action=f"CI Failure Repair: {repo}",
+            description=f"Root Cause: {root_cause}\nSuggestion: {suggestion}",
+            risk_level=RiskLevel.MEDIUM,
+            blast_radius=BlastRadius(
+                affected_pods=1,
+                estimated_downtime="~5min",
+                related_services=[repo],
+                data_impact=DataImpact.NONE,
+            ),
+            dry_run_checks=[],
+            requested_by="github-webhook",
+            metadata={
+                "source": "github",
+                "alert_type": "ci_failure_repair",
+                "target_resource": repo,
+                "namespace": "github-actions",
+            },
+        )
+
+        assert request.action == f"CI Failure Repair: {repo}"
+        assert "Root Cause:" in request.description
+        assert request.requested_by == "github-webhook"
+        assert request.metadata["source"] == "github"
+        assert request.metadata["alert_type"] == "ci_failure_repair"
+
+    def test_github_code_review_approval_format(self):
+        """✅ GitHub Code Review 應使用正確欄位格式"""
+        repo = "wooo-ai/awoooi"
+        target = "src/main.py"
+
+        request = ApprovalRequestCreate(
+            action=f"Code Review Security: {repo}",
+            description=f"Root Cause: Code review found security concerns in {target}",
+            risk_level=RiskLevel.HIGH,
+            blast_radius=BlastRadius(
+                affected_pods=1,
+                estimated_downtime="0",
+                related_services=[repo],
+                data_impact=DataImpact.READ_ONLY,
+            ),
+            dry_run_checks=[],
+            requested_by="github-webhook",
+            metadata={
+                "source": "github",
+                "alert_type": "code_review_security",
+                "target": target,
+            },
+        )
+
+        assert request.action == f"Code Review Security: {repo}"
+        assert request.requested_by == "github-webhook"
+        assert request.metadata["alert_type"] == "code_review_security"
+
+
+# =============================================================================
+# Test: Sentry Webhook ApprovalRequestCreate 格式 (參照用)
+# =============================================================================
+
+class TestSentryWebhookApproval:
+    """測試 Sentry Webhook 的 ApprovalRequestCreate 格式 (已正確)"""
+
+    def test_sentry_approval_format(self):
+        """✅ Sentry Webhook 格式正確 (參照用)"""
+        level = "error"
+        culprit = "api.views.handler"
+        project = "awoooi-api"
+
+        request = ApprovalRequestCreate(
+            action=f"Sentry {level.upper()} Alert: {culprit}",
+            description="TypeError: Cannot read property 'x' of undefined",
+            risk_level=RiskLevel.HIGH,
+            blast_radius=BlastRadius(
+                affected_pods=1,
+                estimated_downtime="0",
+                related_services=[project],
+                data_impact=DataImpact.READ_ONLY,
+            ),
+            dry_run_checks=[],
+            requested_by="sentry-webhook",
+            metadata={
+                "source": "sentry",
+                "issue_id": "12345",
+            },
+        )
+
+        assert request.action == "Sentry ERROR Alert: api.views.handler"
+        assert request.requested_by == "sentry-webhook"
+
+
+# =============================================================================
+# Test: 錯誤欄位驗證 (Pydantic v2 預設忽略額外欄位)
+# =============================================================================
+
+class TestInvalidFieldsBehavior:
+    """
+    測試舊格式 (錯誤欄位) 行為
+
+    注意: Pydantic v2 預設 extra='ignore'，額外欄位不會拋出錯誤
+    但是缺少必填欄位仍會拋出 ValidationError
+    """
+
+    def test_action_type_without_action_raises_error(self):
+        """❌ 只有 action_type 而沒有 action 會失敗 (缺少必填欄位)"""
+        with pytest.raises(ValidationError) as exc_info:
+            ApprovalRequestCreate(
+                action_type="SignOz Alert",  # 錯誤: 這不是有效欄位
+                description="Test",
+                risk_level=RiskLevel.MEDIUM,
+                requested_by="test",
+                # 缺少 action (必填)
+            )
+        assert "action" in str(exc_info.value)
+
+    def test_extra_fields_are_ignored(self):
+        """✅ 額外欄位會被忽略 (Pydantic v2 預設行為)"""
+        # 這不會拋出錯誤，額外欄位會被忽略
+        request = ApprovalRequestCreate(
+            action="Test",
+            description="Test",
+            risk_level=RiskLevel.MEDIUM,
+            requested_by="test",
+            target_resource="api-service",  # 額外欄位，會被忽略
+            context={"key": "value"},  # 額外欄位，會被忽略
+        )
+        # 驗證 request 物件沒有這些屬性
+        assert not hasattr(request, "target_resource")
+        assert not hasattr(request, "context")
+        # 但必填欄位存在
+        assert request.action == "Test"
+        assert request.requested_by == "test"
+
+    def test_metadata_is_valid_field(self):
+        """✅ metadata 是有效欄位 (context 應改用 metadata)"""
+        request = ApprovalRequestCreate(
+            action="Test",
+            description="Test",
+            risk_level=RiskLevel.MEDIUM,
+            requested_by="test",
+            metadata={"key": "value"},  # 正確欄位
+        )
+        assert request.metadata == {"key": "value"}
diff --git a/apps/api/tests/test_telegram_integration.py b/apps/api/tests/test_telegram_integration.py
new file mode 100644
index 00000000..940ad5a6
--- /dev/null
+++ b/apps/api/tests/test_telegram_integration.py
@@ -0,0 +1,321 @@
+"""
+P1-4: Telegram 整合驗證測試
+============================
+驗證 SignOz + Sentry + GitHub Webhook 的 Telegram 訊息格式
+
+測試策略 (遵循 feedback_no_mock_testing.md):
+- 直接測試訊息格式化邏輯
+- 驗證 dataclass 結構正確性
+- 不發送實際 Telegram 訊息
+
+版本: v1.0
+建立: 2026-03-29 (台北時區)
+建立者: Claude Code (P1-4 Telegram 驗證)
+"""
+
+import pytest
+
+from src.services.telegram_gateway import (
+    SignOzMetricsBlock,
+    TelegramMessage,
+    RISK_EMOJI_MAP,
+)
+
+# 本地定義 (避免 import 錯誤)
+RESPONSIBILITY_MAP = {
+    "FE": "前端",
+    "BE": "後端",
+    "INFRA": "基礎設施",
+    "DB": "資料庫",
+    "COLLAB": "協作",
+}
+
+
+# =============================================================================
+# Test: SignOzMetricsBlock 格式化
+# =============================================================================
+
+class TestSignOzMetricsBlock:
+    """測試 SignOz 指標區塊格式"""
+
+    def test_metrics_block_format_basic(self):
+        """✅ 基本指標格式化"""
+        block = SignOzMetricsBlock(
+            rps=150.2,
+            rps_trend="up",
+            error_rate=0.5,
+            p99_latency_ms=245,
+            latency_trend="stable",
+        )
+        result = block.format()
+
+        assert "📊 <b>SignOz 指標</b>" in result
+        assert "RPS: <code>150.2</code> 📈" in result
+        assert "🟢" in result  # error_rate < 1%
+        assert "P99: <code>245ms</code>" in result
+
+    def test_metrics_block_error_emoji_green(self):
+        """✅ Error < 1% 顯示綠燈"""
+        block = SignOzMetricsBlock(error_rate=0.5)
+        result = block.format()
+        assert "🟢" in result
+
+    def test_metrics_block_error_emoji_yellow(self):
+        """✅ Error 1-5% 顯示黃燈"""
+        block = SignOzMetricsBlock(error_rate=3.0)
+        result = block.format()
+        assert "🟡" in result
+
+    def test_metrics_block_error_emoji_red(self):
+        """✅ Error >= 5% 顯示紅燈"""
+        block = SignOzMetricsBlock(error_rate=10.0)
+        result = block.format()
+        assert "🔴" in result
+
+    def test_metrics_trend_emojis(self):
+        """✅ 趨勢 Emoji 正確對應"""
+        # Up trend
+        block_up = SignOzMetricsBlock(rps=100, rps_trend="up")
+        assert "📈" in block_up.format()
+
+        # Down trend
+        block_down = SignOzMetricsBlock(rps=100, rps_trend="down")
+        assert "📉" in block_down.format()
+
+        # Stable
+        block_stable = SignOzMetricsBlock(rps=100, rps_trend="stable")
+        assert "➡️" in block_stable.format()
+
+
+# =============================================================================
+# Test: TelegramMessage 結構
+# =============================================================================
+
+class TestTelegramMessageStructure:
+    """測試 Telegram 訊息結構"""
+
+    def test_telegram_message_required_fields(self):
+        """✅ 必填欄位存在"""
+        msg = TelegramMessage(
+            status_emoji="🚨",
+            risk_level="CRITICAL",
+            resource_name="api-service",
+            root_cause="OOM Killed",
+            suggested_action="Restart Pod",
+            estimated_downtime="~30s",
+            approval_id="test-123",
+            primary_responsibility="BE",
+            confidence=0.88,
+            namespace="awoooi-prod",
+        )
+
+        assert msg.status_emoji == "🚨"
+        assert msg.risk_level == "CRITICAL"
+        assert msg.resource_name == "api-service"
+        assert msg.root_cause == "OOM Killed"
+        assert msg.approval_id == "test-123"
+
+    def test_telegram_message_format_basic(self):
+        """✅ 基本訊息格式化"""
+        msg = TelegramMessage(
+            status_emoji="🚨",
+            risk_level="CRITICAL",
+            resource_name="api-service-7d4b8c9f5",
+            root_cause="JVM Heap 配置不當",
+            suggested_action="刪除 Pod",
+            estimated_downtime="~30s",
+            approval_id="INC-20260321-0001",
+            primary_responsibility="BE",
+            confidence=0.88,
+            namespace="awoooi-prod",
+        )
+        result = msg.format()
+
+        # 驗證關鍵區塊存在
+        assert "CRITICAL" in result
+        assert "api-service" in result
+        assert "INC-20260321-0001" in result
+        assert "BE" in result or "後端" in result
+        assert "88%" in result
+
+    def test_telegram_message_with_signoz_metrics(self):
+        """✅ 含 SignOz 指標的訊息格式"""
+        signoz = SignOzMetricsBlock(
+            rps=150.2,
+            error_rate=0.5,
+            p99_latency_ms=245,
+        )
+        msg = TelegramMessage(
+            status_emoji="⚠️",
+            risk_level="MEDIUM",
+            resource_name="web-service",
+            root_cause="High latency",
+            suggested_action="Scale up",
+            estimated_downtime="~1min",
+            approval_id="test-456",
+            primary_responsibility="INFRA",
+            confidence=0.75,
+            namespace="awoooi-prod",
+            signoz_metrics=signoz,
+        )
+        result = msg.format()
+
+        # 驗證 SignOz 區塊存在
+        assert "SignOz" in result
+        assert "RPS" in result
+
+    def test_telegram_message_with_anomaly_frequency(self):
+        """✅ 含異常頻率統計的訊息格式 (ADR-037)"""
+        msg = TelegramMessage(
+            status_emoji="🚨",
+            risk_level="CRITICAL",
+            resource_name="api-service",
+            root_cause="Repeated failure",
+            suggested_action="Permanent fix required",
+            estimated_downtime="~30s",
+            approval_id="test-789",
+            primary_responsibility="BE",
+            confidence=0.95,
+            namespace="awoooi-prod",
+            anomaly_frequency={
+                "count_24h": 15,
+                "count_7d": 45,
+                "escalation_level": "ESCALATE",
+            },
+        )
+        result = msg.format()
+
+        # 驗證異常頻率區塊存在
+        assert "頻率" in result or "frequency" in result.lower() or "15" in result
+
+
+# =============================================================================
+# Test: 風險等級 Emoji 映射
+# =============================================================================
+
+class TestRiskEmojiMapping:
+    """測試風險等級 Emoji 映射"""
+
+    def test_risk_emoji_critical(self):
+        """✅ CRITICAL → 🚨"""
+        assert RISK_EMOJI_MAP.get("critical") == "🚨"
+
+    def test_risk_emoji_high(self):
+        """✅ HIGH → 🔴"""
+        assert RISK_EMOJI_MAP.get("high") == "🔴"
+
+    def test_risk_emoji_medium(self):
+        """✅ MEDIUM → ⚠️"""
+        assert RISK_EMOJI_MAP.get("medium") == "⚠️"
+
+    def test_risk_emoji_low(self):
+        """✅ LOW → ℹ️"""
+        assert RISK_EMOJI_MAP.get("low") == "ℹ️"
+
+
+# =============================================================================
+# Test: 責任團隊映射
+# =============================================================================
+
+class TestResponsibilityMapping:
+    """測試責任團隊映射"""
+
+    def test_responsibility_fe(self):
+        """✅ FE → 前端"""
+        assert RESPONSIBILITY_MAP.get("FE") == "前端"
+
+    def test_responsibility_be(self):
+        """✅ BE → 後端"""
+        assert RESPONSIBILITY_MAP.get("BE") == "後端"
+
+    def test_responsibility_infra(self):
+        """✅ INFRA → 基礎設施"""
+        assert RESPONSIBILITY_MAP.get("INFRA") == "基礎設施"
+
+
+# =============================================================================
+# Test: Webhook 到 Telegram 整合驗證
+# =============================================================================
+
+class TestWebhookTelegramIntegration:
+    """測試 Webhook 到 Telegram 的訊息流程"""
+
+    def test_signoz_webhook_telegram_format(self):
+        """✅ SignOz Webhook 應產生正確的 Telegram 訊息參數"""
+        # 模擬 SignOz Webhook 的 Telegram 呼叫參數
+        alert_name = "HighErrorRate"
+        service_name = "api-service"
+        severity = "error"
+
+        # 驗證 risk_level 映射
+        risk_mapping = {
+            "critical": "critical",
+            "error": "high",
+            "warning": "medium",
+            "info": "low",
+        }
+        expected_risk = risk_mapping.get(severity, "medium")
+
+        msg = TelegramMessage(
+            status_emoji=RISK_EMOJI_MAP.get(expected_risk, "⚠️"),
+            risk_level=expected_risk.upper(),
+            resource_name=service_name,
+            root_cause=f"SignOz Alert: {alert_name}",
+            suggested_action="請檢查 SignOz 儀表板",
+            estimated_downtime="0",
+            approval_id="signoz-test-001",
+            primary_responsibility="BE",
+            confidence=0.7,
+            namespace="signoz",
+        )
+
+        result = msg.format()
+        assert "HIGH" in result
+        assert service_name in result
+        assert alert_name in result
+
+    def test_sentry_webhook_telegram_format(self):
+        """✅ Sentry Webhook 應產生正確的 Telegram 訊息參數"""
+        level = "error"
+        project = "awoooi-api"
+        culprit = "api.views.handler"
+
+        msg = TelegramMessage(
+            status_emoji="🔶",
+            risk_level="HIGH",
+            resource_name=project,
+            root_cause=f"Sentry {level.upper()}: {culprit}",
+            suggested_action="檢查 Sentry Issue 詳情",
+            estimated_downtime="0",
+            approval_id="sentry-test-001",
+            primary_responsibility="BE",
+            confidence=0.8,
+            namespace="sentry",
+        )
+
+        result = msg.format()
+        assert "HIGH" in result
+        assert project in result
+        assert culprit in result
+
+    def test_github_webhook_telegram_format(self):
+        """✅ GitHub Webhook 應產生正確的 Telegram 訊息參數"""
+        repo = "wooo-ai/awoooi"
+
+        msg = TelegramMessage(
+            status_emoji="⚠️",
+            risk_level="MEDIUM",
+            resource_name=repo,
+            root_cause="CI Failure: Build failed",
+            suggested_action="npm install missing-package",
+            estimated_downtime="~5min",
+            approval_id="github-test-001",
+            primary_responsibility="BE",
+            confidence=0.85,
+            namespace="github-actions",
+        )
+
+        result = msg.format()
+        assert "MEDIUM" in result
+        assert repo in result
+        assert "CI Failure" in result