diff --git a/tests/integration/test_generation_api.py b/tests/integration/test_generation_api.py
index c4192d439..e516dd0d4 100755
--- a/tests/integration/test_generation_api.py
+++ b/tests/integration/test_generation_api.py
@@ -170,6 +170,38 @@ class StubGenerationTaskRepository:
             items = [t for t in items if str(t.status) == status]
         return len(items)
 
+    def list_by_project_filtered(
+        self,
+        project_id: str,
+        *,
+        status: str | None = None,
+        limit: int | None = None,
+        offset: int = 0,
+    ) -> list:
+        """按项目+状态筛选任务列表（stub实现）。"""
+        items = [t for t in self._tasks.values() if t.project_id == project_id]
+        if status:
+            items = [t for t in items if str(t.status) == status]
+        # 按创建时间倒序
+        items.sort(key=lambda t: t.created_at or "", reverse=True)
+        if offset:
+            items = items[offset:]
+        if limit is not None:
+            items = items[:limit]
+        return items
+
+    def count_by_project_filtered(
+        self,
+        project_id: str,
+        *,
+        status: str | None = None,
+    ) -> int:
+        """按项目+状态筛选计数（stub实现）。"""
+        items = [t for t in self._tasks.values() if t.project_id == project_id]
+        if status:
+            items = [t for t in items if str(t.status) == status]
+        return len(items)
+
 
 class StubGeneratedVideoRepository:
     def __init__(self, videos: dict[str, GeneratedVideo] | None = None):
diff --git a/tests/integration/test_task_center_api.py b/tests/integration/test_task_center_api.py
index 7a94f5122..24772bd5e 100755
--- a/tests/integration/test_task_center_api.py
+++ b/tests/integration/test_task_center_api.py
@@ -135,6 +135,38 @@ class StubGenerationTaskRepository:
             items = [t for t in items if str(t.status) == status]
         return len(items)
 
+    def list_by_project_filtered(
+        self,
+        project_id: str,
+        *,
+        status: str | None = None,
+        limit: int | None = None,
+        offset: int = 0,
+    ) -> list:
+        """按项目+状态筛选任务列表（stub实现）。"""
+        items = [t for t in self._tasks.values() if t.project_id == project_id]
+        if status:
+            items = [t for t in items if str(t.status) == status]
+        # 按创建时间倒序
+        items.sort(key=lambda t: t.created_at or "", reverse=True)
+        if offset:
+            items = items[offset:]
+        if limit is not None:
+            items = items[:limit]
+        return items
+
+    def count_by_project_filtered(
+        self,
+        project_id: str,
+        *,
+        status: str | None = None,
+    ) -> int:
+        """按项目+状态筛选计数（stub实现）。"""
+        items = [t for t in self._tasks.values() if t.project_id == project_id]
+        if status:
+            items = [t for t in items if str(t.status) == status]
+        return len(items)
+
 
 class StubIngestJobRepository:
     def __init__(self, jobs: dict[str, IngestJob] | None = None):
diff --git a/tests/unit/test_edit_plan_generation_api.py b/tests/unit/test_edit_plan_generation_api.py
index d94248d71..85a1b3e03 100644
--- a/tests/unit/test_edit_plan_generation_api.py
+++ b/tests/unit/test_edit_plan_generation_api.py
@@ -225,6 +225,38 @@ class StubGenerationTaskRepository:
             items = [t for t in items if str(t.status) == status]
         return len(items)
 
+    def list_by_project_filtered(
+        self,
+        project_id: str,
+        *,
+        status: str | None = None,
+        limit: int | None = None,
+        offset: int = 0,
+    ) -> list:
+        """按项目+状态筛选任务列表（stub实现）。"""
+        items = [t for t in self._store.values() if t.project_id == project_id]
+        if status:
+            items = [t for t in items if str(t.status) == status]
+        # 按创建时间倒序
+        items.sort(key=lambda t: t.created_at or "", reverse=True)
+        if offset:
+            items = items[offset:]
+        if limit is not None:
+            items = items[:limit]
+        return items
+
+    def count_by_project_filtered(
+        self,
+        project_id: str,
+        *,
+        status: str | None = None,
+    ) -> int:
+        """按项目+状态筛选计数（stub实现）。"""
+        items = [t for t in self._store.values() if t.project_id == project_id]
+        if status:
+            items = [t for t in items if str(t.status) == status]
+        return len(items)
+
 
 # ── Fixtures ──────────────────────────────────────────────────────────────────
 
diff --git a/tests/unit/test_edit_plan_service.py b/tests/unit/test_edit_plan_service.py
index 6b52d5e83..f67335642 100755
--- a/tests/unit/test_edit_plan_service.py
+++ b/tests/unit/test_edit_plan_service.py
@@ -232,6 +232,38 @@ class StubGenerationTaskRepository:
             items = [t for t in items if str(t.status) == status]
         return len(items)
 
+    def list_by_project_filtered(
+        self,
+        project_id: str,
+        *,
+        status: str | None = None,
+        limit: int | None = None,
+        offset: int = 0,
+    ) -> list:
+        """按项目+状态筛选任务列表（stub实现）。"""
+        items = [t for t in self._tasks.values() if t.project_id == project_id]
+        if status:
+            items = [t for t in items if str(t.status) == status]
+        # 按创建时间倒序
+        items.sort(key=lambda t: t.created_at or "", reverse=True)
+        if offset:
+            items = items[offset:]
+        if limit is not None:
+            items = items[:limit]
+        return items
+
+    def count_by_project_filtered(
+        self,
+        project_id: str,
+        *,
+        status: str | None = None,
+    ) -> int:
+        """按项目+状态筛选计数（stub实现）。"""
+        items = [t for t in self._tasks.values() if t.project_id == project_id]
+        if status:
+            items = [t for t in items if str(t.status) == status]
+        return len(items)
+
 
 # ---------------------------------------------------------------------------
 # Service factory
diff --git a/tests/unit/test_generation_presigned_url.py b/tests/unit/test_generation_presigned_url.py
index 725fc4da2..e4453cbf1 100755
--- a/tests/unit/test_generation_presigned_url.py
+++ b/tests/unit/test_generation_presigned_url.py
@@ -80,6 +80,22 @@ class StubGenerationTaskRepository:
             items = [t for t in items if getattr(t, "status", None) == status]
         return len(items)
 
+    def list_by_project_filtered(self, project_id, *, status=None, limit=None, offset=0):
+        items = [t for t in self._tasks.values() if getattr(t, "project_id", None) == project_id]
+        if status:
+            items = [t for t in items if getattr(t, "status", None) == status]
+        if offset:
+            items = items[offset:]
+        if limit is not None:
+            items = items[:limit]
+        return items
+
+    def count_by_project_filtered(self, project_id, *, status=None):
+        items = [t for t in self._tasks.values() if getattr(t, "project_id", None) == project_id]
+        if status:
+            items = [t for t in items if getattr(t, "status", None) == status]
+        return len(items)
+
 
 class StubGeneratedVideoRepository:
     def __init__(self, videos=None):