diff --git a/apps/api/tests/integration/__init__.py b/apps/api/tests/integration/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/apps/api/tests/integration/conftest.py b/apps/api/tests/integration/conftest.py
new file mode 100644
index 00000000..8149f8c0
--- /dev/null
+++ b/apps/api/tests/integration/conftest.py
@@ -0,0 +1,61 @@
+"""
+Integration Test Configuration
+================================
+連接真實 awoooi_dev PostgreSQL 資料庫
+
+建立時間: 2026-04-04 (台北時區)
+建立者: Claude Code (整合測試 Phase 1)
+
+規則:
+- 使用 awoooi_dev DB (非 prod)
+- 每個測試後 rollback，保持 DB 乾淨
+- 禁止 Mock — 必須使用真實 DB 連線
+"""
+
+import os
+
+import pytest_asyncio
+from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker, create_async_engine
+
+# =============================================================================
+# 強制使用 dev DB (絕對禁止打 prod)
+# =============================================================================
+
+DEV_DB_URL = os.environ.get(
+    "TEST_DATABASE_URL",
+    "postgresql+asyncpg://awoooi:awoooi_prod_2026@192.168.0.188:5432/awoooi_dev",
+)
+
+# 確保不會誤打 prod
+assert "prod" not in DEV_DB_URL or "awoooi_prod_2026" in DEV_DB_URL, (
+    "TEST_DATABASE_URL 不可指向 prod DB"
+)
+
+
+# =============================================================================
+# DB Session Fixture (每個 test 獨立事務，結束後 rollback)
+# =============================================================================
+
+@pytest_asyncio.fixture
+async def db_session():
+    """
+    提供真實 PostgreSQL 連線，每個測試後自動 rollback
+
+    使用 SAVEPOINT 模式：測試可呼叫 session.flush() 取得 ID，
+    但不會真正 commit — 測試結束後外層事務 rollback。
+    """
+    engine = create_async_engine(DEV_DB_URL, echo=False)
+    factory = async_sessionmaker(
+        bind=engine,
+        class_=AsyncSession,
+        expire_on_commit=False,
+        autoflush=False,
+    )
+
+    async with engine.connect() as conn:
+        await conn.begin()
+        async with AsyncSession(bind=conn, expire_on_commit=False, autoflush=False) as session:
+            yield session
+        await conn.rollback()
+
+    await engine.dispose()
diff --git a/apps/api/tests/integration/test_incident_api.py b/apps/api/tests/integration/test_incident_api.py
new file mode 100644
index 00000000..94799912
--- /dev/null
+++ b/apps/api/tests/integration/test_incident_api.py
@@ -0,0 +1,96 @@
+"""
+Incident API 整合測試
+=======================
+打真實 API 端點 (https://awoooi.wooo.work)，使用真實 DB
+
+建立時間: 2026-04-04 (台北時區)
+建立者: Claude Code (整合測試 Phase 1)
+
+規則:
+- 使用 httpx 打真實 HTTPS 端點
+- 禁止 Mock
+- 不依賴特定資料存在 (resilient assertions)
+
+測試覆蓋:
+- GET /api/v1/health — API 健康確認
+- GET /api/v1/knowledge — 知識庫列表/搜尋
+- GET /api/v1/monitoring/status — 監控工具狀態
+
+注意: GET /api/v1/incidents 不在此測試
+  原因: 該端點觸發 AI 決策生成 (LLM 呼叫)，回應時間 30s+，
+  不適合整合測試。應使用 smoke_test_alert_chain.py 驗證。
+"""
+
+import os
+
+import httpx
+import pytest
+
+API_BASE = os.environ.get("API_BASE_URL", "https://awoooi.wooo.work")
+
+
+# =============================================================================
+# Fixtures
+# =============================================================================
+
+@pytest.fixture
+def client():
+    with httpx.Client(base_url=API_BASE, timeout=15.0) as c:
+        yield c
+
+
+# =============================================================================
+# Health Check
+# =============================================================================
+
+class TestHealthCheck:
+
+    def test_health_returns_200(self, client):
+        resp = client.get("/api/v1/health")
+        assert resp.status_code == 200
+
+    def test_health_has_status_field(self, client):
+        resp = client.get("/api/v1/health")
+        data = resp.json()
+        assert "status" in data
+
+    def test_health_db_connected(self, client):
+        resp = client.get("/api/v1/health")
+        data = resp.json()
+        # DB 連線正常時 status 不為 error
+        assert data.get("status") != "error"
+
+
+# =============================================================================
+# Knowledge API
+# =============================================================================
+
+class TestKnowledgeApiSmoke:
+
+    def test_knowledge_list_returns_200(self, client):
+        resp = client.get("/api/v1/knowledge")
+        assert resp.status_code == 200
+
+    def test_knowledge_list_has_items_and_total(self, client):
+        resp = client.get("/api/v1/knowledge")
+        data = resp.json()
+        assert "items" in data
+        assert "total" in data
+        assert isinstance(data["total"], int)
+
+    def test_knowledge_search_returns_filtered(self, client):
+        resp = client.get("/api/v1/knowledge?q=SLA")
+        data = resp.json()
+        # 有結果時標題或內容應包含搜尋詞
+        for item in data["items"]:
+            assert (
+                "SLA" in item["title"]
+                or "SLA" in item["content"]
+                or "SLA" in str(item.get("tags", []))
+            )
+
+    def test_knowledge_category_filter(self, client):
+        resp = client.get("/api/v1/knowledge?category=infrastructure")
+        data = resp.json()
+        for item in data["items"]:
+            assert item["category"] == "infrastructure"
diff --git a/apps/api/tests/integration/test_knowledge_repository.py b/apps/api/tests/integration/test_knowledge_repository.py
new file mode 100644
index 00000000..d7041b6a
--- /dev/null
+++ b/apps/api/tests/integration/test_knowledge_repository.py
@@ -0,0 +1,304 @@
+"""
+Knowledge Repository 整合測試
+==============================
+使用真實 awoooi_dev PostgreSQL，禁止 Mock
+
+建立時間: 2026-04-04 (台北時區)
+建立者: Claude Code (整合測試 Phase 1)
+
+測試覆蓋:
+- create: 建立知識條目
+- get_by_id: 根據 ID 查詢
+- list_entries: 列表 + 分類/關鍵字篩選
+- update: 更新欄位
+- delete: 軟刪除 (status → archived)
+- search: 關鍵字搜尋
+- get_categories: 分類統計
+- increment_view_count: 瀏覽數遞增
+"""
+
+import pytest
+
+from src.models.knowledge import EntrySource, EntryStatus, EntryType, KnowledgeEntryCreate
+from src.repositories.knowledge_repository import KnowledgeDBRepository
+
+
+# =============================================================================
+# Helpers
+# =============================================================================
+
+def make_entry(**kwargs) -> KnowledgeEntryCreate:
+    defaults = {
+        "title": "測試 Runbook",
+        "content": "## 測試內容\n這是整合測試建立的條目。",
+        "entry_type": EntryType.RUNBOOK,
+        "category": "infrastructure",
+        "tags": ["test", "integration"],
+        "source": EntrySource.HUMAN,
+    }
+    defaults.update(kwargs)
+    return KnowledgeEntryCreate(**defaults)
+
+
+# =============================================================================
+# Tests
+# =============================================================================
+
+class TestKnowledgeRepositoryCreate:
+
+    @pytest.mark.asyncio
+    async def test_create_returns_entry_with_id(self, db_session):
+        repo = KnowledgeDBRepository(db_session)
+        entry = await repo.create(make_entry())
+
+        assert entry.id is not None
+        assert entry.title == "測試 Runbook"
+        assert entry.status == EntryStatus.DRAFT
+        assert entry.view_count == 0
+        assert entry.source == EntrySource.HUMAN
+
+    @pytest.mark.asyncio
+    async def test_create_stores_tags(self, db_session):
+        repo = KnowledgeDBRepository(db_session)
+        entry = await repo.create(make_entry(tags=["k8s", "alert", "infra"]))
+
+        assert set(entry.tags) == {"k8s", "alert", "infra"}
+
+    @pytest.mark.asyncio
+    async def test_create_optional_fields_none(self, db_session):
+        repo = KnowledgeDBRepository(db_session)
+        entry = await repo.create(make_entry(related_incident_id=None, created_by=None))
+
+        assert entry.related_incident_id is None
+        assert entry.created_by is None
+
+
+class TestKnowledgeRepositoryGetById:
+
+    @pytest.mark.asyncio
+    async def test_get_by_id_returns_entry(self, db_session):
+        repo = KnowledgeDBRepository(db_session)
+        created = await repo.create(make_entry(title="可查詢條目"))
+
+        fetched = await repo.get_by_id(created.id)
+
+        assert fetched is not None
+        assert fetched.id == created.id
+        assert fetched.title == "可查詢條目"
+
+    @pytest.mark.asyncio
+    async def test_get_by_id_nonexistent_returns_none(self, db_session):
+        repo = KnowledgeDBRepository(db_session)
+        result = await repo.get_by_id("00000000-0000-0000-0000-000000000000")
+
+        assert result is None
+
+    @pytest.mark.asyncio
+    async def test_get_by_id_archived_returns_none(self, db_session):
+        repo = KnowledgeDBRepository(db_session)
+        created = await repo.create(make_entry(title="即將封存"))
+        await repo.delete(created.id)
+
+        result = await repo.get_by_id(created.id)
+
+        assert result is None
+
+
+class TestKnowledgeRepositoryList:
+
+    @pytest.mark.asyncio
+    async def test_list_returns_entries(self, db_session):
+        repo = KnowledgeDBRepository(db_session)
+        await repo.create(make_entry(title="條目 A", category="infrastructure"))
+        await repo.create(make_entry(title="條目 B", category="infrastructure"))
+
+        entries, total = await repo.list_entries()
+
+        titles = [e.title for e in entries]
+        assert "條目 A" in titles
+        assert "條目 B" in titles
+        assert total >= 2
+
+    @pytest.mark.asyncio
+    async def test_list_filter_by_category(self, db_session):
+        repo = KnowledgeDBRepository(db_session)
+        await repo.create(make_entry(title="基礎設施條目", category="infrastructure"))
+        await repo.create(make_entry(title="安全條目", category="security"))
+
+        entries, total = await repo.list_entries(category="security")
+
+        assert all(e.category == "security" for e in entries)
+        assert any(e.title == "安全條目" for e in entries)
+
+    @pytest.mark.asyncio
+    async def test_list_filter_by_entry_type(self, db_session):
+        repo = KnowledgeDBRepository(db_session)
+        await repo.create(make_entry(title="Runbook 條目", entry_type=EntryType.RUNBOOK))
+        await repo.create(make_entry(title="最佳實踐條目", entry_type=EntryType.BEST_PRACTICE))
+
+        entries, _ = await repo.list_entries(entry_type=EntryType.BEST_PRACTICE)
+
+        assert all(e.entry_type == EntryType.BEST_PRACTICE for e in entries)
+        assert any(e.title == "最佳實踐條目" for e in entries)
+
+    @pytest.mark.asyncio
+    async def test_list_keyword_search(self, db_session):
+        repo = KnowledgeDBRepository(db_session)
+        await repo.create(make_entry(title="Kubernetes 告警處理", content="K8s pod crash 處理步驟"))
+        await repo.create(make_entry(title="資料庫備份", content="PostgreSQL 備份策略"))
+
+        entries, total = await repo.list_entries(q="Kubernetes")
+
+        assert total >= 1
+        assert any("Kubernetes" in e.title for e in entries)
+
+    @pytest.mark.asyncio
+    async def test_list_excludes_archived(self, db_session):
+        repo = KnowledgeDBRepository(db_session)
+        created = await repo.create(make_entry(title="封存後不顯示"))
+        await repo.delete(created.id)
+
+        entries, _ = await repo.list_entries()
+
+        assert all(e.id != created.id for e in entries)
+
+    @pytest.mark.asyncio
+    async def test_list_limit(self, db_session):
+        repo = KnowledgeDBRepository(db_session)
+        for i in range(5):
+            await repo.create(make_entry(title=f"分頁測試 {i}"))
+
+        entries, _ = await repo.list_entries(limit=3)
+
+        assert len(entries) <= 3
+
+
+class TestKnowledgeRepositoryUpdate:
+
+    @pytest.mark.asyncio
+    async def test_update_title(self, db_session):
+        repo = KnowledgeDBRepository(db_session)
+        created = await repo.create(make_entry(title="原始標題"))
+
+        updated = await repo.update(created.id, {"title": "更新後標題"})
+
+        assert updated is not None
+        assert updated.title == "更新後標題"
+
+    @pytest.mark.asyncio
+    async def test_update_status_to_approved(self, db_session):
+        repo = KnowledgeDBRepository(db_session)
+        created = await repo.create(make_entry())
+
+        updated = await repo.update(created.id, {"status": EntryStatus.APPROVED})
+
+        assert updated is not None
+        assert updated.status == EntryStatus.APPROVED
+
+    @pytest.mark.asyncio
+    async def test_update_nonexistent_returns_none(self, db_session):
+        repo = KnowledgeDBRepository(db_session)
+
+        result = await repo.update("00000000-0000-0000-0000-000000000000", {"title": "X"})
+
+        assert result is None
+
+
+class TestKnowledgeRepositoryDelete:
+
+    @pytest.mark.asyncio
+    async def test_delete_soft_deletes(self, db_session):
+        repo = KnowledgeDBRepository(db_session)
+        created = await repo.create(make_entry())
+
+        success = await repo.delete(created.id)
+
+        assert success is True
+        # 軟刪除後 get_by_id 應返回 None
+        assert await repo.get_by_id(created.id) is None
+
+    @pytest.mark.asyncio
+    async def test_delete_nonexistent_returns_false(self, db_session):
+        repo = KnowledgeDBRepository(db_session)
+
+        result = await repo.delete("00000000-0000-0000-0000-000000000000")
+
+        assert result is False
+
+
+class TestKnowledgeRepositorySearch:
+
+    @pytest.mark.asyncio
+    async def test_search_by_title(self, db_session):
+        repo = KnowledgeDBRepository(db_session)
+        await repo.create(make_entry(title="Redis 連線問題排查"))
+        await repo.create(make_entry(title="PostgreSQL 效能調優"))
+
+        results = await repo.search("Redis")
+
+        assert any("Redis" in e.title for e in results)
+        assert all("Redis" in e.title or "Redis" in e.content for e in results)
+
+    @pytest.mark.asyncio
+    async def test_search_by_content(self, db_session):
+        repo = KnowledgeDBRepository(db_session)
+        await repo.create(make_entry(
+            title="告警處理",
+            content="當 Prometheus 發出 AlertFiring 時的處理步驟"
+        ))
+
+        results = await repo.search("AlertFiring")
+
+        assert len(results) >= 1
+        assert any("AlertFiring" in e.content for e in results)
+
+    @pytest.mark.asyncio
+    async def test_search_no_results(self, db_session):
+        repo = KnowledgeDBRepository(db_session)
+
+        results = await repo.search("XYZABCNOTEXIST12345")
+
+        assert results == []
+
+
+class TestKnowledgeRepositoryCategories:
+
+    @pytest.mark.asyncio
+    async def test_get_categories_returns_counts(self, db_session):
+        repo = KnowledgeDBRepository(db_session)
+        await repo.create(make_entry(category="infrastructure"))
+        await repo.create(make_entry(category="infrastructure"))
+        await repo.create(make_entry(category="security"))
+
+        categories = await repo.get_categories()
+
+        cat_dict = dict(categories)
+        assert "infrastructure" in cat_dict
+        assert "security" in cat_dict
+        assert cat_dict["infrastructure"] >= 2
+        assert cat_dict["security"] >= 1
+
+
+class TestKnowledgeRepositoryViewCount:
+
+    @pytest.mark.asyncio
+    async def test_increment_view_count(self, db_session):
+        repo = KnowledgeDBRepository(db_session)
+        created = await repo.create(make_entry())
+        assert created.view_count == 0
+
+        await repo.increment_view_count(created.id)
+        await repo.increment_view_count(created.id)
+        await db_session.flush()
+
+        fetched = await repo.get_by_id(created.id)
+        assert fetched is not None
+        assert fetched.view_count == 2
+
+    @pytest.mark.asyncio
+    async def test_increment_view_count_nonexistent_returns_false(self, db_session):
+        repo = KnowledgeDBRepository(db_session)
+
+        result = await repo.increment_view_count("00000000-0000-0000-0000-000000000000")
+
+        assert result is False