diff --git a/tests/unit/test_editing_mode_domain.py b/tests/unit/test_editing_mode_domain.py
new file mode 100755
index 000000000..63e5cb08d
--- /dev/null
+++ b/tests/unit/test_editing_mode_domain.py
@@ -0,0 +1,40 @@
+"""
+EditingMode 剪辑模式枚举单元测试
+"""
+
+from packages.domain.editing_mode import EditingMode
+
+
+class TestEditingMode:
+    """EditingMode 枚举测试"""
+
+    def test_all_modes_exist(self):
+        assert EditingMode.ONE_TAKE == "one_take"
+        assert EditingMode.PIP == "pip"
+        assert EditingMode.VOICE_OVER == "voice_over"
+        assert EditingMode.VOICE_PIP == "voice_pip"
+
+    def test_total_count(self):
+        assert len(EditingMode) == 4
+
+    def test_is_string_type(self):
+        for mode in EditingMode:
+            assert isinstance(mode.value, str)
+            assert isinstance(mode, str)
+
+    def test_mode_descriptions(self):
+        """验证模式值有意义"""
+        assert "one" in EditingMode.ONE_TAKE
+        assert "pip" in EditingMode.PIP
+        assert "voice" in EditingMode.VOICE_OVER
+        assert "voice" in EditingMode.VOICE_PIP
+
+    def test_usage_in_comparison(self):
+        mode = EditingMode.ONE_TAKE
+        assert mode == "one_take"
+        assert mode != "pip"
+
+    def test_iterable(self):
+        modes = list(EditingMode)
+        assert len(modes) == 4
+        assert EditingMode.ONE_TAKE in modes
diff --git a/tests/unit/test_entities_domain.py b/tests/unit/test_entities_domain.py
new file mode 100755
index 000000000..29fde2533
--- /dev/null
+++ b/tests/unit/test_entities_domain.py
@@ -0,0 +1,732 @@
+"""entities 领域模块单元测试 - P3-1 第七波
+
+覆盖 User、Project、AssetLibrary、Asset、IngestJob 五个数据类
++ AssetLibraryKind/IngestJobStatus/AssetStatus/ClassificationStatus 四个枚举
+"""
+
+from __future__ import annotations
+
+from datetime import datetime, timezone
+
+import pytest
+
+
+class TestAssetLibraryKind:
+    """AssetLibraryKind 枚举测试"""
+
+    def test_all_kinds_exist(self):
+        from packages.domain.entities import AssetLibraryKind
+
+        assert AssetLibraryKind.VIDEO == "video"
+        assert AssetLibraryKind.VOICE == "voice"
+        assert AssetLibraryKind.IMAGE == "image"
+
+    def test_is_string_type(self):
+        from packages.domain.entities import AssetLibraryKind
+
+        assert isinstance(AssetLibraryKind.VIDEO, str)
+        assert AssetLibraryKind.VIDEO + "" == "video"
+
+    def test_total_count(self):
+        from packages.domain.entities import AssetLibraryKind
+
+        assert len(AssetLibraryKind) == 3
+
+
+class TestIngestJobStatus:
+    """IngestJobStatus 枚举测试"""
+
+    def test_all_statuses_exist(self):
+        from packages.domain.entities import IngestJobStatus
+
+        assert IngestJobStatus.PENDING == "pending"
+        assert IngestJobStatus.PROCESSING == "processing"
+        assert IngestJobStatus.COMPLETED == "completed"
+        assert IngestJobStatus.FAILED == "failed"
+
+    def test_is_string_type(self):
+        from packages.domain.entities import IngestJobStatus
+
+        assert isinstance(IngestJobStatus.PENDING, str)
+
+    def test_total_count(self):
+        from packages.domain.entities import IngestJobStatus
+
+        assert len(IngestJobStatus) == 4
+
+
+class TestAssetStatus:
+    """AssetStatus 枚举 + _missing_ 兼容逻辑测试"""
+
+    def test_standard_values(self):
+        from packages.domain.entities import AssetStatus
+
+        assert AssetStatus.UPLOADING == "uploading"
+        assert AssetStatus.READY == "ready"
+        assert AssetStatus.PROCESSING == "processing"
+        assert AssetStatus.ERROR == "error"
+        assert AssetStatus.DELETED == "deleted"
+
+    def test_missing_uploaded_maps_to_ready(self):
+        """历史值 uploaded → READY"""
+        from packages.domain.entities import AssetStatus
+
+        assert AssetStatus("uploaded") == AssetStatus.READY
+
+    def test_missing_success_maps_to_ready(self):
+        from packages.domain.entities import AssetStatus
+
+        assert AssetStatus("success") == AssetStatus.READY
+
+    def test_missing_done_maps_to_ready(self):
+        from packages.domain.entities import AssetStatus
+
+        assert AssetStatus("done") == AssetStatus.READY
+
+    def test_missing_upload_variants_map_to_uploading(self):
+        from packages.domain.entities import AssetStatus
+
+        assert AssetStatus("upload") == AssetStatus.UPLOADING
+        assert AssetStatus("uploading_start") == AssetStatus.UPLOADING
+        assert AssetStatus("upload_start") == AssetStatus.UPLOADING
+
+    def test_missing_failed_variants_map_to_error(self):
+        from packages.domain.entities import AssetStatus
+
+        assert AssetStatus("failed") == AssetStatus.ERROR
+        assert AssetStatus("fail") == AssetStatus.ERROR
+        assert AssetStatus("err") == AssetStatus.ERROR
+
+    def test_missing_process_variants_map_to_processing(self):
+        from packages.domain.entities import AssetStatus
+
+        assert AssetStatus("process") == AssetStatus.PROCESSING
+        assert AssetStatus("running") == AssetStatus.PROCESSING
+        assert AssetStatus("run") == AssetStatus.PROCESSING
+
+    def test_missing_unknown_falls_back_to_ready(self):
+        """完全未知的值兜底为 READY，不阻塞业务"""
+        from packages.domain.entities import AssetStatus
+
+        assert AssetStatus("weird_status") == AssetStatus.READY
+        assert AssetStatus("deprecated_state") == AssetStatus.READY
+
+    def test_missing_case_insensitive(self):
+        from packages.domain.entities import AssetStatus
+
+        assert AssetStatus("UPLOADED") == AssetStatus.READY
+        assert AssetStatus("Failed") == AssetStatus.ERROR
+
+    def test_missing_with_spaces(self):
+        from packages.domain.entities import AssetStatus
+
+        assert AssetStatus("  uploaded  ") == AssetStatus.READY
+
+    def test_missing_non_string_returns_ready(self):
+        """非字符串输入也兜底，不抛异常"""
+        from packages.domain.entities import AssetStatus
+
+        assert AssetStatus(None) == AssetStatus.READY  # type: ignore[arg-type]
+        assert AssetStatus(123) == AssetStatus.READY  # type: ignore[arg-type]
+
+
+class TestClassificationStatus:
+    """ClassificationStatus 枚举 + _missing_ 兼容逻辑测试"""
+
+    def test_standard_values(self):
+        from packages.domain.entities import ClassificationStatus
+
+        assert ClassificationStatus.PENDING == "pending"
+        assert ClassificationStatus.PROCESSING == "processing"
+        assert ClassificationStatus.COMPLETED == "completed"
+        assert ClassificationStatus.FAILED == "failed"
+
+    def test_missing_done_maps_to_completed(self):
+        """历史值 done → COMPLETED"""
+        from packages.domain.entities import ClassificationStatus
+
+        assert ClassificationStatus("done") == ClassificationStatus.COMPLETED
+
+    def test_missing_success_maps_to_completed(self):
+        from packages.domain.entities import ClassificationStatus
+
+        assert ClassificationStatus("success") == ClassificationStatus.COMPLETED
+
+    def test_missing_finished_maps_to_completed(self):
+        from packages.domain.entities import ClassificationStatus
+
+        assert ClassificationStatus("finished") == ClassificationStatus.COMPLETED
+
+    def test_missing_fail_variants_map_to_failed(self):
+        from packages.domain.entities import ClassificationStatus
+
+        assert ClassificationStatus("fail") == ClassificationStatus.FAILED
+        assert ClassificationStatus("error") == ClassificationStatus.FAILED
+        assert ClassificationStatus("err") == ClassificationStatus.FAILED
+
+    def test_missing_process_variants_map_to_processing(self):
+        from packages.domain.entities import ClassificationStatus
+
+        assert ClassificationStatus("process") == ClassificationStatus.PROCESSING
+        assert ClassificationStatus("running") == ClassificationStatus.PROCESSING
+
+    def test_missing_unknown_falls_back_to_pending(self):
+        """完全未知的值兜底为 PENDING"""
+        from packages.domain.entities import ClassificationStatus
+
+        assert ClassificationStatus("unknown_state") == ClassificationStatus.PENDING
+
+    def test_missing_case_insensitive_and_whitespace(self):
+        from packages.domain.entities import ClassificationStatus
+
+        assert ClassificationStatus("DONE") == ClassificationStatus.COMPLETED
+        assert ClassificationStatus("  Success  ") == ClassificationStatus.COMPLETED
+
+    def test_missing_non_string_returns_pending(self):
+        from packages.domain.entities import ClassificationStatus
+
+        assert ClassificationStatus(None) == ClassificationStatus.PENDING  # type: ignore[arg-type]
+
+
+class TestUser:
+    """User 数据类测试"""
+
+    def test_create_minimal_user(self):
+        from packages.domain.entities import User
+
+        user = User(id="user_123", email="test@example.com", display_name="测试用户")
+        assert user.id == "user_123"
+        assert user.email == "test@example.com"
+        assert user.display_name == "测试用户"
+        assert user.username == ""
+
+    def test_default_values(self):
+        from packages.domain.entities import User
+
+        user = User(id="u1", email="a@b.com", display_name="Test")
+        assert user.password_hash == ""
+        assert user.email_verified is False
+        assert user.email_verification_token is None
+        assert user.password_reset_token is None
+        assert user.subscription_plan == "free"
+        assert user.subscription_status == "active"
+        assert user.max_projects == 3
+        assert user.max_storage_gb == 10
+        assert user.used_storage_gb == 0.0
+        assert user.is_admin is False
+        assert user.wechat_openid is None
+        assert user.phone is None
+        assert user.phone_verified is False
+
+    def test_with_wechat_binding(self):
+        from packages.domain.entities import User
+
+        user = User(
+            id="u1",
+            email="wx_user@wechat.local",
+            display_name="微信用户",
+            wechat_openid="o123456789",
+            wechat_unionid="u987654321",
+        )
+        assert user.wechat_openid == "o123456789"
+        assert user.wechat_unionid == "u987654321"
+
+    def test_with_phone_binding(self):
+        from packages.domain.entities import User
+
+        user = User(
+            id="u1",
+            email="a@b.com",
+            display_name="Test",
+            phone="13800138000",
+            phone_verified=True,
+        )
+        assert user.phone == "13800138000"
+        assert user.phone_verified is True
+
+    def test_admin_user(self):
+        from packages.domain.entities import User
+
+        user = User(id="admin", email="admin@example.com", display_name="Admin", is_admin=True)
+        assert user.is_admin is True
+
+    def test_pro_subscription(self):
+        from packages.domain.entities import User
+
+        user = User(
+            id="u1",
+            email="a@b.com",
+            display_name="Pro",
+            subscription_plan="pro",
+            max_projects=100,
+            max_storage_gb=100,
+        )
+        assert user.subscription_plan == "pro"
+        assert user.max_projects == 100
+        assert user.max_storage_gb == 100
+
+    def test_has_created_at(self):
+        from packages.domain.entities import User
+
+        before = datetime.now(timezone.utc)
+        user = User(id="u1", email="a@b.com", display_name="Test")
+        after = datetime.now(timezone.utc)
+        assert before <= user.created_at <= after
+
+
+class TestProject:
+    """Project 数据类 + 业务方法测试"""
+
+    def test_create_project(self):
+        from packages.domain.entities import Project
+
+        project = Project.create(owner_user_id="user_1", name="我的项目")
+        assert project.id  # 自动生成 ID
+        assert len(project.id) == 32  # uuid4 hex
+        assert project.owner_user_id == "user_1"
+        assert project.name == "我的项目"
+        assert project.description == ""
+        assert project.shared_users == []
+
+    def test_create_with_description(self):
+        from packages.domain.entities import Project
+
+        project = Project.create(owner_user_id="u1", name="测试项目", description="这是描述")
+        assert project.name == "测试项目"
+        assert project.description == "这是描述"
+
+    def test_create_strips_whitespace(self):
+        from packages.domain.entities import Project
+
+        project = Project.create(owner_user_id="u1", name="  我的项目  ", description="  描述  ")
+        assert project.name == "我的项目"
+        assert project.description == "描述"
+
+    def test_create_empty_name_raises(self):
+        from packages.domain.entities import Project
+
+        with pytest.raises(ValueError, match="项目名称不能为空"):
+            Project.create(owner_user_id="u1", name="")
+
+    def test_create_whitespace_name_raises(self):
+        from packages.domain.entities import Project
+
+        with pytest.raises(ValueError, match="项目名称不能为空"):
+            Project.create(owner_user_id="u1", name="   ")
+
+    def test_is_owner_true(self):
+        from packages.domain.entities import Project
+
+        project = Project.create(owner_user_id="user_1", name="P1")
+        assert project.is_owner("user_1") is True
+
+    def test_is_owner_false(self):
+        from packages.domain.entities import Project
+
+        project = Project.create(owner_user_id="user_1", name="P1")
+        assert project.is_owner("user_2") is False
+
+    def test_is_shared_with_true(self):
+        from packages.domain.entities import Project
+
+        project = Project(id="p1", owner_user_id="owner", name="P1", shared_users=["u1", "u2"])
+        assert project.is_shared_with("u1") is True
+        assert project.is_shared_with("u2") is True
+
+    def test_is_shared_with_false(self):
+        from packages.domain.entities import Project
+
+        project = Project(id="p1", owner_user_id="owner", name="P1", shared_users=["u1"])
+        assert project.is_shared_with("u3") is False
+
+    def test_can_access_owner(self):
+        from packages.domain.entities import Project
+
+        project = Project.create(owner_user_id="owner", name="P1")
+        assert project.can_access("owner") is True
+
+    def test_can_access_shared_user(self):
+        from packages.domain.entities import Project
+
+        project = Project(id="p1", owner_user_id="owner", name="P1", shared_users=["shared_user"])
+        assert project.can_access("shared_user") is True
+
+    def test_cannot_access_other(self):
+        from packages.domain.entities import Project
+
+        project = Project.create(owner_user_id="owner", name="P1")
+        assert project.can_access("stranger") is False
+
+    def test_has_created_at(self):
+        from packages.domain.entities import Project
+
+        project = Project.create(owner_user_id="u1", name="P1")
+        assert isinstance(project.created_at, datetime)
+
+
+class TestAssetLibrary:
+    """AssetLibrary 数据类测试"""
+
+    def test_create_library(self):
+        from packages.domain.entities import AssetLibrary, AssetLibraryKind
+
+        lib = AssetLibrary.create(project_id="proj_1", name="视频素材库", kind=AssetLibraryKind.VIDEO)
+        assert lib.id
+        assert len(lib.id) == 32
+        assert lib.project_id == "proj_1"
+        assert lib.name == "视频素材库"
+        assert lib.kind == AssetLibraryKind.VIDEO
+        assert lib.asset_count == 0
+        assert lib.total_size == 0
+
+    def test_create_strips_name(self):
+        from packages.domain.entities import AssetLibrary, AssetLibraryKind
+
+        lib = AssetLibrary.create(project_id="p1", name="  语音库  ", kind=AssetLibraryKind.VOICE)
+        assert lib.name == "语音库"
+
+    def test_create_empty_name_raises(self):
+        from packages.domain.entities import AssetLibrary, AssetLibraryKind
+
+        with pytest.raises(ValueError, match="素材库名称不能为空"):
+            AssetLibrary.create(project_id="p1", name="", kind=AssetLibraryKind.IMAGE)
+
+    def test_image_library_kind(self):
+        from packages.domain.entities import AssetLibrary, AssetLibraryKind
+
+        lib = AssetLibrary.create(project_id="p1", name="图片库", kind=AssetLibraryKind.IMAGE)
+        assert lib.kind == AssetLibraryKind.IMAGE
+        assert lib.kind == "image"
+
+    def test_default_timestamps(self):
+        from packages.domain.entities import AssetLibrary, AssetLibraryKind
+
+        lib = AssetLibrary.create(project_id="p1", name="L1", kind=AssetLibraryKind.VIDEO)
+        assert isinstance(lib.created_at, datetime)
+        assert isinstance(lib.updated_at, datetime)
+
+
+class TestAsset:
+    """Asset 数据类 + 业务方法测试"""
+
+    def test_create_minimal_asset(self):
+        from packages.domain.entities import Asset, AssetStatus, ClassificationStatus
+
+        asset = Asset.create(
+            project_id="p1",
+            library_id="lib1",
+            name="test.mp4",
+            storage_key="videos/test.mp4",
+            mime_type="video/mp4",
+        )
+        assert asset.id
+        assert len(asset.id) == 32
+        assert asset.project_id == "p1"
+        assert asset.library_id == "lib1"
+        assert asset.name == "test.mp4"
+        assert asset.storage_key == "videos/test.mp4"
+        assert asset.mime_type == "video/mp4"
+        assert asset.status == AssetStatus.UPLOADING
+        assert asset.classification_status == ClassificationStatus.PENDING
+        assert asset.file_size == 0
+        assert asset.metadata == {}
+        assert asset.tag_ids == []
+
+    def test_create_with_full_params(self):
+        from packages.domain.entities import Asset, AssetStatus, ClassificationStatus
+
+        asset = Asset.create(
+            project_id="p1",
+            library_id="lib1",
+            name="  clip.mp4  ",
+            storage_key="  path/clip.mp4  ",
+            mime_type="  video/mp4  ",
+            metadata={"quality": "high"},
+            file_size=1024000,
+            thumbnail_url="https://example.com/thumb.jpg",
+            duration=30.5,
+            width=1920,
+            height=1080,
+            fps=30.0,
+            codec="h264",
+            status=AssetStatus.READY,
+            classification_status=ClassificationStatus.COMPLETED,
+            quality_score=0.95,
+            uploaded_by_user_id="  user_1  ",
+            file_hash="  abc123  ",
+        )
+        assert asset.name == "clip.mp4"  # strip
+        assert asset.storage_key == "path/clip.mp4"
+        assert asset.mime_type == "video/mp4"
+        assert asset.file_size == 1024000
+        assert asset.thumbnail_url == "https://example.com/thumb.jpg"
+        assert asset.duration == 30.5
+        assert asset.width == 1920
+        assert asset.height == 1080
+        assert asset.fps == 30.0
+        assert asset.codec == "h264"
+        assert asset.status == AssetStatus.READY
+        assert asset.classification_status == ClassificationStatus.COMPLETED
+        assert asset.quality_score == 0.95
+        assert asset.uploaded_by_user_id == "user_1"
+        assert asset.file_hash == "abc123"
+        assert asset.metadata == {"quality": "high"}
+
+    def test_create_empty_name_raises(self):
+        from packages.domain.entities import Asset
+
+        with pytest.raises(ValueError, match="素材名称不能为空"):
+            Asset.create(project_id="p1", library_id="l1", name="", storage_key="k", mime_type="video/mp4")
+
+    def test_create_empty_storage_key_raises(self):
+        from packages.domain.entities import Asset
+
+        with pytest.raises(ValueError, match="storage_key 不能为空"):
+            Asset.create(project_id="p1", library_id="l1", name="a.mp4", storage_key="  ", mime_type="video/mp4")
+
+    def test_create_empty_mime_type_raises(self):
+        from packages.domain.entities import Asset
+
+        with pytest.raises(ValueError, match="mime_type 不能为空"):
+            Asset.create(project_id="p1", library_id="l1", name="a.mp4", storage_key="k", mime_type="")
+
+    def test_file_type_video(self):
+        from packages.domain.entities import Asset
+
+        asset = Asset.create(project_id="p1", library_id="l1", name="v.mp4", storage_key="k", mime_type="video/mp4")
+        assert asset.file_type == "video"
+
+    def test_file_type_audio(self):
+        from packages.domain.entities import Asset
+
+        asset = Asset.create(project_id="p1", library_id="l1", name="a.mp3", storage_key="k", mime_type="audio/mpeg")
+        assert asset.file_type == "audio"
+
+    def test_file_type_image(self):
+        from packages.domain.entities import Asset
+
+        asset = Asset.create(project_id="p1", library_id="l1", name="i.jpg", storage_key="k", mime_type="image/jpeg")
+        assert asset.file_type == "image"
+
+    def test_file_type_no_slash(self):
+        from packages.domain.entities import Asset
+
+        asset = Asset.create(project_id="p1", library_id="l1", name="f.bin", storage_key="k", mime_type="octet-stream")
+        assert asset.file_type == "octet-stream"
+
+    def test_add_tag(self):
+        from packages.domain.entities import Asset
+
+        asset = Asset.create(project_id="p1", library_id="l1", name="v.mp4", storage_key="k", mime_type="video/mp4")
+        asset.add_tag("tag_1")
+        assert "tag_1" in asset.tag_ids
+        assert len(asset.tag_ids) == 1
+
+    def test_add_tag_strips_whitespace(self):
+        from packages.domain.entities import Asset
+
+        asset = Asset.create(project_id="p1", library_id="l1", name="v.mp4", storage_key="k", mime_type="video/mp4")
+        asset.add_tag("  tag_1  ")
+        assert asset.tag_ids == ["tag_1"]
+
+    def test_add_tag_deduplicates(self):
+        from packages.domain.entities import Asset
+
+        asset = Asset.create(project_id="p1", library_id="l1", name="v.mp4", storage_key="k", mime_type="video/mp4")
+        asset.add_tag("tag_1")
+        asset.add_tag("tag_1")
+        assert asset.tag_ids.count("tag_1") == 1
+
+    def test_add_empty_tag_raises(self):
+        from packages.domain.entities import Asset
+
+        asset = Asset.create(project_id="p1", library_id="l1", name="v.mp4", storage_key="k", mime_type="video/mp4")
+        with pytest.raises(ValueError, match="标签 ID 不能为空"):
+            asset.add_tag("   ")
+
+    def test_add_tag_updates_updated_at(self):
+        from time import sleep
+
+        from packages.domain.entities import Asset
+
+        asset = Asset.create(project_id="p1", library_id="l1", name="v.mp4", storage_key="k", mime_type="video/mp4")
+        original = asset.updated_at
+        sleep(0.001)
+        asset.add_tag("tag_1")
+        assert asset.updated_at > original
+
+    def test_remove_tag_existing(self):
+        from packages.domain.entities import Asset
+
+        asset = Asset.create(project_id="p1", library_id="l1", name="v.mp4", storage_key="k", mime_type="video/mp4")
+        asset.add_tag("tag_1")
+        asset.add_tag("tag_2")
+        asset.remove_tag("tag_1")
+        assert "tag_1" not in asset.tag_ids
+        assert "tag_2" in asset.tag_ids
+        assert len(asset.tag_ids) == 1
+
+    def test_remove_tag_nonexistent_is_idempotent(self):
+        """删除不存在的标签不报错"""
+        from packages.domain.entities import Asset
+
+        asset = Asset.create(project_id="p1", library_id="l1", name="v.mp4", storage_key="k", mime_type="video/mp4")
+        asset.remove_tag("nonexistent")  # 不抛异常
+        assert asset.tag_ids == []
+
+    def test_remove_tag_strips_whitespace(self):
+        from packages.domain.entities import Asset
+
+        asset = Asset.create(project_id="p1", library_id="l1", name="v.mp4", storage_key="k", mime_type="video/mp4")
+        asset.add_tag("tag_1")
+        asset.remove_tag("  tag_1  ")
+        assert "tag_1" not in asset.tag_ids
+
+    def test_remove_tag_updates_updated_at(self):
+        from time import sleep
+
+        from packages.domain.entities import Asset
+
+        asset = Asset.create(project_id="p1", library_id="l1", name="v.mp4", storage_key="k", mime_type="video/mp4")
+        asset.add_tag("tag_1")
+        original = asset.updated_at
+        sleep(0.001)
+        asset.remove_tag("tag_1")
+        assert asset.updated_at > original
+
+    def test_thumbnail_none_when_falsy(self):
+        """空字符串 thumbnail 存为 None"""
+        from packages.domain.entities import Asset
+
+        asset = Asset.create(
+            project_id="p1",
+            library_id="l1",
+            name="v.mp4",
+            storage_key="k",
+            mime_type="video/mp4",
+            thumbnail_url="",
+        )
+        assert asset.thumbnail_url is None
+
+    def test_metadata_default_empty_dict(self):
+        from packages.domain.entities import Asset
+
+        asset = Asset.create(
+            project_id="p1",
+            library_id="l1",
+            name="v.mp4",
+            storage_key="k",
+            mime_type="video/mp4",
+            metadata=None,
+        )
+        assert asset.metadata == {}
+        # 不共享同一个默认 dict
+        asset2 = Asset.create(
+            project_id="p1",
+            library_id="l1",
+            name="v2.mp4",
+            storage_key="k2",
+            mime_type="video/mp4",
+        )
+        asset.metadata["test"] = "value"
+        assert "test" not in asset2.metadata
+
+
+class TestIngestJob:
+    """IngestJob 数据类测试"""
+
+    def test_create_minimal(self):
+        from packages.domain.entities import IngestJob, IngestJobStatus
+
+        job = IngestJob.create(
+            project_id="p1",
+            library_id="lib1",
+            storage_key="videos/test.mp4",
+        )
+        assert job.id
+        assert len(job.id) == 32
+        assert job.project_id == "p1"
+        assert job.library_id == "lib1"
+        assert job.storage_key == "videos/test.mp4"
+        assert job.status == IngestJobStatus.PENDING
+        assert job.error_message == ""
+        assert job.result_asset_id == ""
+        assert job.file_hash == ""
+
+    def test_create_with_file_hash(self):
+        from packages.domain.entities import IngestJob
+
+        job = IngestJob.create(
+            project_id="p1",
+            library_id="lib1",
+            storage_key="k",
+            file_hash="abc123def456",
+        )
+        assert job.file_hash == "abc123def456"
+
+    def test_create_strips_fields(self):
+        from packages.domain.entities import IngestJob
+
+        job = IngestJob.create(
+            project_id="  p1  ",
+            library_id="  lib1  ",
+            storage_key="  key  ",
+            file_hash="  hash  ",
+        )
+        assert job.project_id == "p1"
+        assert job.library_id == "lib1"
+        assert job.storage_key == "key"
+        assert job.file_hash == "hash"
+
+    def test_create_empty_project_id_raises(self):
+        from packages.domain.entities import IngestJob
+
+        with pytest.raises(ValueError, match="project_id 不能为空"):
+            IngestJob.create(project_id="", library_id="l1", storage_key="k")
+
+    def test_create_empty_library_id_raises(self):
+        from packages.domain.entities import IngestJob
+
+        with pytest.raises(ValueError, match="library_id 不能为空"):
+            IngestJob.create(project_id="p1", library_id="  ", storage_key="k")
+
+    def test_create_empty_storage_key_raises(self):
+        from packages.domain.entities import IngestJob
+
+        with pytest.raises(ValueError, match="storage_key 不能为空"):
+            IngestJob.create(project_id="p1", library_id="l1", storage_key="")
+
+    def test_failed_status(self):
+        from packages.domain.entities import IngestJob, IngestJobStatus
+
+        job = IngestJob(
+            id="j1",
+            project_id="p1",
+            library_id="l1",
+            storage_key="k",
+            status=IngestJobStatus.FAILED,
+            error_message="转码失败",
+        )
+        assert job.status == IngestJobStatus.FAILED
+        assert job.error_message == "转码失败"
+
+    def test_completed_with_result(self):
+        from packages.domain.entities import IngestJob, IngestJobStatus
+
+        job = IngestJob(
+            id="j1",
+            project_id="p1",
+            library_id="l1",
+            storage_key="k",
+            status=IngestJobStatus.COMPLETED,
+            result_asset_id="asset_123",
+        )
+        assert job.status == IngestJobStatus.COMPLETED
+        assert job.result_asset_id == "asset_123"
+
+    def test_has_timestamps(self):
+        from packages.domain.entities import IngestJob
+
+        job = IngestJob.create(project_id="p1", library_id="l1", storage_key="k")
+        assert isinstance(job.created_at, datetime)
+        assert isinstance(job.updated_at, datetime)
diff --git a/tests/unit/test_memory_state_store.py b/tests/unit/test_memory_state_store.py
new file mode 100755
index 000000000..a387d2887
--- /dev/null
+++ b/tests/unit/test_memory_state_store.py
@@ -0,0 +1,142 @@
+"""MemoryStateStore 单元测试 - 微信 OAuth state 存储
+
+覆盖：正常存取、一次性消费、过期清理、并发安全、空 state 处理。
+"""
+
+from __future__ import annotations
+
+import time
+from threading import Thread
+
+import pytest
+
+
+class TestMemoryStateStore:
+    def test_put_and_verify_success(self):
+        """正常存入并校验成功"""
+        from packages.application.auth.wechat_oauth_service import MemoryStateStore
+
+        store = MemoryStateStore()
+        store.put("test_state_123")
+        assert store.verify_and_consume("test_state_123") is True
+
+    def test_verify_nonexistent_state_fails(self):
+        """不存在的 state 校验失败"""
+        from packages.application.auth.wechat_oauth_service import MemoryStateStore
+
+        store = MemoryStateStore()
+        assert store.verify_and_consume("nonexistent") is False
+
+    def test_state_single_use(self):
+        """state 只能消费一次（防重放）"""
+        from packages.application.auth.wechat_oauth_service import MemoryStateStore
+
+        store = MemoryStateStore()
+        store.put("single_use_state")
+        assert store.verify_and_consume("single_use_state") is True
+        assert store.verify_and_consume("single_use_state") is False
+
+    def test_empty_state_rejected(self):
+        """空字符串 state 校验失败"""
+        from packages.application.auth.wechat_oauth_service import MemoryStateStore
+
+        store = MemoryStateStore()
+        store.put("")
+        # 空字符串作为 key 技术上可以存，但业务层应该拒绝
+        # 这里验证 store 本身行为一致性
+        assert store.verify_and_consume("") is True  # 存入了就能通过一次
+        assert store.verify_and_consume("") is False  # 消费后就没了
+
+    def test_expired_state_cleaned(self):
+        """过期 state 会被清理，校验失败"""
+        from packages.application.auth.wechat_oauth_service import MemoryStateStore
+
+        # TTL 设为 0.01 秒，快速过期
+        store = MemoryStateStore(ttl_seconds=0.01)
+        store.put("expire_me")
+        time.sleep(0.02)
+        assert store.verify_and_consume("expire_me") is False
+
+    def test_multiple_states_independent(self):
+        """多个 state 互不影响"""
+        from packages.application.auth.wechat_oauth_service import MemoryStateStore
+
+        store = MemoryStateStore()
+        store.put("state_a")
+        store.put("state_b")
+        store.put("state_c")
+
+        # 消费 b
+        assert store.verify_and_consume("state_b") is True
+        assert store.verify_and_consume("state_b") is False
+
+        # a 和 c 仍然有效
+        assert store.verify_and_consume("state_a") is True
+        assert store.verify_and_consume("state_c") is True
+
+    def test_clean_expired_doesnt_touch_valid(self):
+        """过期清理不影响未过期的 state"""
+        from packages.application.auth.wechat_oauth_service import MemoryStateStore
+
+        store = MemoryStateStore(ttl_seconds=10)
+        store.put("valid_state")
+
+        # 手动触发清理（通过 verify 触发内部 clean_expired）
+        # 由于所有 state 都没过期，清理不影响
+        assert store.verify_and_consume("valid_state") is True
+
+    def test_thread_safety_concurrent_put(self):
+        """并发写入不丢数据"""
+        from packages.application.auth.wechat_oauth_service import MemoryStateStore
+
+        store = MemoryStateStore(ttl_seconds=60)
+        states = [f"state_{i}" for i in range(100)]
+
+        def put_states(states_list):
+            for s in states_list:
+                store.put(s)
+
+        threads = [Thread(target=put_states, args=(states[i * 20 : (i + 1) * 20],)) for i in range(5)]
+        for t in threads:
+            t.start()
+        for t in threads:
+            t.join()
+
+        # 每个 state 都能消费一次
+        for s in states:
+            assert store.verify_and_consume(s) is True
+
+    def test_thread_safety_concurrent_consume(self):
+        """并发消费同一个 state 只有一个能成功"""
+        from packages.application.auth.wechat_oauth_service import MemoryStateStore
+
+        store = MemoryStateStore()
+        store.put("contested_state")
+
+        results = []
+
+        def try_consume():
+            results.append(store.verify_and_consume("contested_state"))
+
+        threads = [Thread(target=try_consume) for _ in range(10)]
+        for t in threads:
+            t.start()
+        for t in threads:
+            t.join()
+
+        # 只有一个成功，其余失败
+        assert sum(1 for r in results if r) == 1
+        assert sum(1 for r in results if not r) == 9
+
+    def test_default_ttl_is_10_minutes(self):
+        """默认 TTL 是 600 秒（10分钟）"""
+        from packages.application.auth.wechat_oauth_service import (
+            STATE_TTL_SECONDS,
+            MemoryStateStore,
+        )
+
+        assert STATE_TTL_SECONDS == 600
+        store = MemoryStateStore()
+        # 验证默认值生效：存入后立即验证应该通过
+        store.put("default_ttl_test")
+        assert store.verify_and_consume("default_ttl_test") is True
diff --git a/tests/unit/test_recipe_domain.py b/tests/unit/test_recipe_domain.py
new file mode 100755
index 000000000..fd903a3bb
--- /dev/null
+++ b/tests/unit/test_recipe_domain.py
@@ -0,0 +1,84 @@
+"""
+Recipe 配方领域模型单元测试
+"""
+
+from packages.domain.recipe import Recipe, RecipeItem
+
+
+class TestRecipeItem:
+    """RecipeItem 测试"""
+
+    def test_create_item(self):
+        item = RecipeItem(
+            id="item-1",
+            recipe_id="recipe-1",
+            item_type="asset",
+            item_id="asset-123",
+            position=0,
+        )
+        assert item.id == "item-1"
+        assert item.recipe_id == "recipe-1"
+        assert item.item_type == "asset"
+        assert item.item_id == "asset-123"
+        assert item.position == 0
+        assert item.metadata_ == {}
+
+    def test_item_with_metadata(self):
+        item = RecipeItem(
+            id="item-1",
+            recipe_id="r1",
+            item_type="voice",
+            item_id="voice-1",
+            position=2,
+            metadata_={"speed": 1.0, "pitch": 0},
+        )
+        assert item.metadata_["speed"] == 1.0
+        assert item.metadata_["pitch"] == 0
+
+
+class TestRecipe:
+    """Recipe 测试"""
+
+    def test_create_minimal(self):
+        r = Recipe(id="r1", user_id="u1", name="我的配方")
+        assert r.id == "r1"
+        assert r.user_id == "u1"
+        assert r.name == "我的配方"
+
+    def test_default_values(self):
+        r = Recipe(id="r1", user_id="u1", name="n")
+        assert r.description == ""
+        assert r.template_id == ""
+        assert r.generation_params == {}
+        assert r.items == []
+        assert r.is_active is True
+        assert r.metadata_ == {}
+
+    def test_with_items(self):
+        items = [
+            RecipeItem(id="i1", recipe_id="r1", item_type="asset", item_id="a1", position=0),
+            RecipeItem(id="i2", recipe_id="r1", item_type="title", item_id="t1", position=1),
+        ]
+        r = Recipe(id="r1", user_id="u1", name="n", items=items)
+        assert len(r.items) == 2
+        assert r.items[0].item_type == "asset"
+        assert r.items[1].item_type == "title"
+
+    def test_with_generation_params(self):
+        params = {"mode": "one_take", "duration": 30}
+        r = Recipe(id="r1", user_id="u1", name="n", generation_params=params)
+        assert r.generation_params["mode"] == "one_take"
+
+    def test_recipe_inactive(self):
+        r = Recipe(id="r1", user_id="u1", name="n", is_active=False)
+        assert r.is_active is False
+
+    def test_has_timestamps(self):
+        r = Recipe(id="r1", user_id="u1", name="n")
+        assert r.created_at is not None
+        assert r.updated_at is not None
+
+    def test_all_item_types(self):
+        for itype in ["asset", "title", "voice"]:
+            item = RecipeItem(id="i1", recipe_id="r1", item_type=itype, item_id="x", position=0)
+            assert item.item_type == itype
diff --git a/tests/unit/test_tag_domain.py b/tests/unit/test_tag_domain.py
new file mode 100755
index 000000000..d9b4e580a
--- /dev/null
+++ b/tests/unit/test_tag_domain.py
@@ -0,0 +1,34 @@
+"""
+Tag 标签领域模型单元测试
+"""
+
+import pytest
+
+from packages.domain.tag import Tag
+
+
+class TestTagCreate:
+    """创建标签测试"""
+
+    def test_create_basic(self):
+        tag = Tag.create(user_id="user-1", name="风景")
+        assert tag.id is not None
+        assert len(tag.id) == 32
+        assert tag.user_id == "user-1"
+        assert tag.name == "风景"
+
+    def test_create_strips_name(self):
+        tag = Tag.create(user_id="user-1", name="  风景  ")
+        assert tag.name == "风景"
+
+    def test_create_empty_name_raises(self):
+        with pytest.raises(ValueError, match="标签名称不能为空"):
+            Tag.create(user_id="user-1", name="")
+
+    def test_create_whitespace_name_raises(self):
+        with pytest.raises(ValueError, match="标签名称不能为空"):
+            Tag.create(user_id="user-1", name="   ")
+
+    def test_create_has_created_at(self):
+        tag = Tag.create(user_id="user-1", name="美食")
+        assert tag.created_at is not None
diff --git a/tests/unit/test_title_library_domain.py b/tests/unit/test_title_library_domain.py
new file mode 100755
index 000000000..b5a680f11
--- /dev/null
+++ b/tests/unit/test_title_library_domain.py
@@ -0,0 +1,78 @@
+"""
+TitleLibraryItem 标题库领域模型单元测试
+"""
+
+from packages.domain.title_library import TitleLibraryItem
+
+
+class TestTitleLibraryItem:
+    """TitleLibraryItem 测试"""
+
+    def test_create_minimal(self):
+        item = TitleLibraryItem(id="t1", user_id="u1", name="标题1", text="这是标题文本")
+        assert item.id == "t1"
+        assert item.user_id == "u1"
+        assert item.name == "标题1"
+        assert item.text == "这是标题文本"
+
+    def test_default_values(self):
+        item = TitleLibraryItem(id="t1", user_id="u1", name="n", text="t")
+        assert item.category == "default"
+        assert item.description == ""
+        assert item.tags == []
+        assert item.usage_count == 0
+        assert item.is_active is True
+        assert item.metadata_ == {}
+
+    def test_with_category(self):
+        item = TitleLibraryItem(
+            id="t1",
+            user_id="u1",
+            name="n",
+            text="t",
+            category="美食",
+        )
+        assert item.category == "美食"
+
+    def test_with_tags(self):
+        item = TitleLibraryItem(
+            id="t1",
+            user_id="u1",
+            name="n",
+            text="t",
+            tags=["爆款", "美食"],
+        )
+        assert len(item.tags) == 2
+        assert "爆款" in item.tags
+
+    def test_usage_count(self):
+        item = TitleLibraryItem(id="t1", user_id="u1", name="n", text="t")
+        assert item.usage_count == 0
+        item.usage_count = 10
+        assert item.usage_count == 10
+
+    def test_inactive(self):
+        item = TitleLibraryItem(
+            id="t1",
+            user_id="u1",
+            name="n",
+            text="t",
+            is_active=False,
+        )
+        assert item.is_active is False
+
+    def test_with_metadata(self):
+        meta = {"source": "import", "quality": "high"}
+        item = TitleLibraryItem(
+            id="t1",
+            user_id="u1",
+            name="n",
+            text="t",
+            metadata_=meta,
+        )
+        assert item.metadata_["source"] == "import"
+
+    def test_has_timestamps(self):
+        item = TitleLibraryItem(id="t1", user_id="u1", name="n", text="t")
+        assert item.created_at is not None
+        assert item.updated_at is not None
diff --git a/tests/unit/test_voice_library_domain.py b/tests/unit/test_voice_library_domain.py
new file mode 100755
index 000000000..9ebe1b6e3
--- /dev/null
+++ b/tests/unit/test_voice_library_domain.py
@@ -0,0 +1,95 @@
+"""
+VoiceLibraryItem 配音库领域模型单元测试
+"""
+
+from packages.domain.voice_library import VoiceLibraryItem
+
+
+class TestVoiceLibraryItem:
+    """VoiceLibraryItem 测试"""
+
+    def test_create_minimal(self):
+        item = VoiceLibraryItem(id="v1", user_id="u1", name="我的配音")
+        assert item.id == "v1"
+        assert item.user_id == "u1"
+        assert item.name == "我的配音"
+
+    def test_default_values(self):
+        item = VoiceLibraryItem(id="v1", user_id="u1", name="n")
+        assert item.text == ""
+        assert item.voice_provider == ""
+        assert item.voice_id == ""
+        assert item.voice_name == ""
+        assert item.audio_url == ""
+        assert item.duration == 0
+        assert item.file_size == 0
+        assert item.status == "completed"
+        assert item.project_id is None
+        assert item.tags == []
+        assert item.metadata_ == {}
+
+    def test_with_voice_info(self):
+        item = VoiceLibraryItem(
+            id="v1",
+            user_id="u1",
+            name="温柔女声",
+            text="大家好",
+            voice_provider="cosyvoice",
+            voice_id="longxiaochun_v3",
+            voice_name="龙小淳",
+        )
+        assert item.voice_provider == "cosyvoice"
+        assert item.voice_id == "longxiaochun_v3"
+        assert item.voice_name == "龙小淳"
+
+    def test_with_audio_info(self):
+        item = VoiceLibraryItem(
+            id="v1",
+            user_id="u1",
+            name="n",
+            audio_url="https://example.com/audio.wav",
+            duration=15.5,
+            file_size=102400,
+        )
+        assert item.audio_url == "https://example.com/audio.wav"
+        assert item.duration == 15.5
+        assert item.file_size == 102400
+
+    def test_with_project_id(self):
+        item = VoiceLibraryItem(
+            id="v1",
+            user_id="u1",
+            name="n",
+            project_id="proj-123",
+        )
+        assert item.project_id == "proj-123"
+
+    def test_status_values(self):
+        for status in ["pending", "processing", "completed", "failed"]:
+            item = VoiceLibraryItem(id="v1", user_id="u1", name="n", status=status)
+            assert item.status == status
+
+    def test_with_tags(self):
+        item = VoiceLibraryItem(
+            id="v1",
+            user_id="u1",
+            name="n",
+            tags=["温柔", "女声", "解说"],
+        )
+        assert len(item.tags) == 3
+        assert "温柔" in item.tags
+
+    def test_with_metadata(self):
+        item = VoiceLibraryItem(
+            id="v1",
+            user_id="u1",
+            name="n",
+            metadata_={"speed": 1.0, "pitch": 0.5},
+        )
+        assert item.metadata_["speed"] == 1.0
+        assert item.metadata_["pitch"] == 0.5
+
+    def test_has_timestamps(self):
+        item = VoiceLibraryItem(id="v1", user_id="u1", name="n")
+        assert item.created_at is not None
+        assert item.updated_at is not None