backend/src/backend/scripts.py

@@ -21,7 +21,6 @@ from sqlalchemy import func, select
 from sqlalchemy.ext.asyncio import AsyncSession
 
 from common.db.models import (
-    EditSessions,
     Scripts,
     StorageObjects,
     Versions,
@@ -227,23 +226,30 @@ async def get_script_row(
     return script, storage_object
 
 
-async def require_no_active_edit_session(
-    session: AsyncSession,
-    storage_object_ids: list[str],
+def require_script_modify_access(
+    script: Scripts,
+    *,
+    user_id: str,
+    is_admin: bool,
 ) -> None:
-    if not storage_object_ids:
+    """Enforce the V3.1 §4 access rules for write operations on a script.
+
+    Rules:
+      * admin: always allowed
+      * owner: always allowed
+      * non-owner: allowed iff ``is_locked`` is False
+
+    Reads (``list`` / ``get``) intentionally do not call this helper — the
+    design contract is "everyone in the workspace can see the script
+    list, but only the owner (or admin) can mutate when locked".
+    """
+    if is_admin or script.owner_user_id == user_id:
+        return
+    if not script.is_locked:
         return
-    active_session = await session.scalar(
-        select(EditSessions).where(
-            EditSessions.storage_object_id.in_(storage_object_ids),
-            EditSessions.session_status == "active",
-            EditSessions.expires_at > datetime.now(UTC).replace(tzinfo=None),
-        )
-    )
-    if active_session is not None:
     raise HTTPException(
-            status.HTTP_409_CONFLICT,
-            "file is being edited; end the editing session before deletion",
+        status.HTTP_403_FORBIDDEN,
+        "script is locked; only the owner (or an administrator) may modify it",
     )
 
 
@@ -542,10 +548,6 @@ async def delete_workspace_directory(
             )
         )
     ).all()
-    await require_no_active_edit_session(
-        session,
-        [script.current_object_id for script, _storage in rows],
-    )
     for script, _storage in rows:
         await request.app.state.storage_client.delete_object(
             script.current_object_id
@@ -624,13 +626,10 @@ async def update_script(
         session,
         for_update=True,
     )
-    if (
-        script.owner_user_id != context.user.user_id
-        and not context.is_admin
-    ):
-        raise HTTPException(
-            status.HTTP_403_FORBIDDEN,
-            "script can only be changed by its owner or an administrator",
+    require_script_modify_access(
+        script,
+        user_id=context.user.user_id,
+        is_admin=context.is_admin,
     )
     content = validate_script_content(payload.content, script.script_type)
     if not storage_object.relative_path:
@@ -677,17 +676,10 @@ async def delete_script(
         session,
         for_update=True,
     )
-    if (
-        script.owner_user_id != context.user.user_id
-        and not context.is_admin
-    ):
-        raise HTTPException(
-            status.HTTP_403_FORBIDDEN,
-            "script can only be deleted by its owner or an administrator",
-        )
-    await require_no_active_edit_session(
-        session,
-        [script.current_object_id],
+    require_script_modify_access(
+        script,
+        user_id=context.user.user_id,
+        is_admin=context.is_admin,
     )
     await request.app.state.storage_client.delete_object(
         script.current_object_id
@@ -722,13 +714,10 @@ async def publish_version(
         session,
         for_update=True,
     )
-    if (
-        script.owner_user_id != context.user.user_id
-        and not context.is_admin
-    ):
-        raise HTTPException(
-            status.HTTP_403_FORBIDDEN,
-            "script can only be published by its owner or an administrator",
+    require_script_modify_access(
+        script,
+        user_id=context.user.user_id,
+        is_admin=context.is_admin,
     )
     if (
         payload.source_object_id
@@ -867,19 +856,30 @@ async def delete_version(
     context: RequestContext = Depends(request_context),
     session: AsyncSession = Depends(database_session),
 ) -> dict[str, Any]:
-    version = await session.get(Versions, versions_id)
-    if (
-        version is None
-        or version.workspace_id != context.workspace.workspace_id
-    ):
+    # Join to Scripts so the lock + owner check rides on the script record,
+    # not on whoever happened to publish this specific version. Lock state
+    # is a property of the script as a whole (architecture V3.1 §4), not of
+    # any one version of it.
+    row = (
+        await session.execute(
+            select(Versions, Scripts)
+            .join(
+                Scripts,
+                Scripts.script_id == Versions.script_id,
+            )
+            .where(
+                Versions.versions_id == versions_id,
+                Versions.workspace_id == context.workspace.workspace_id,
+            )
+        )
+    ).one_or_none()
+    if row is None:
         raise HTTPException(status.HTTP_404_NOT_FOUND, "稳定版本不存在")
-    if (
-        version.created_by != context.user.user_id
-        and not context.is_admin
-    ):
-        raise HTTPException(
-            status.HTTP_403_FORBIDDEN,
-            "仅稳定版本发布者或管理员可以删除",
+    version, script = row
+    require_script_modify_access(
+        script,
+        user_id=context.user.user_id,
+        is_admin=context.is_admin,
     )
 
     version.schedule_hidden_at = datetime.now(UTC).replace(tzinfo=None)

common/src/common/db/models/__init__.py

@@ -1,13 +1,8 @@
 from common.db.base import Base
 from common.db.models.audit import AuditLogs
 from common.db.models.events import ConsumerInbox, OutboxEvents
-from common.db.models.experiments import (
-    ExperimentMetrics,
-    ExperimentResources,
-    Experiments,
-)
 from common.db.models.identity import Permissions, RolePermissions, Roles, Users
-from common.db.models.runtime import EditSessions, RuntimeInstances, WorkspaceOperations
+from common.db.models.runtime import WorkspaceOperations
 from common.db.models.schedules import (
     ScheduleEdges,
     ScheduleNodeRuns,
@@ -15,7 +10,7 @@ from common.db.models.schedules import (
     ScheduleRuns,
     Schedules,
 )
-from common.db.models.scripts import NotebookSnapshots, Scripts, Versions
+from common.db.models.scripts import Scripts, Versions
 from common.db.models.storage import DataResources, StorageObjects, UploadSessions
 from common.db.models.workspaces import WorkspaceMembers, Workspaces
 
@@ -24,16 +19,10 @@ __all__ = [
     "AuditLogs",
     "ConsumerInbox",
     "DataResources",
-    "EditSessions",
-    "ExperimentMetrics",
-    "ExperimentResources",
-    "Experiments",
-    "NotebookSnapshots",
     "OutboxEvents",
     "Permissions",
     "RolePermissions",
     "Roles",
-    "RuntimeInstances",
     "ScheduleEdges",
     "ScheduleNodeRuns",
     "ScheduleNodes",

common/src/common/db/models/experiments.py

@@ -1,112 +0,0 @@
-import datetime
-import decimal
-from typing import Optional
-
-from sqlalchemy import BigInteger, Double, Index, JSON, String, text
-from sqlalchemy.dialects.mysql import BIGINT, CHAR, DATETIME, INTEGER, TINYINT
-from sqlalchemy.orm import Mapped, mapped_column
-
-from common.db.base import Base
-
-
-class Experiments(Base):
-    __tablename__ = "experiments"
-    __table_args__ = (
-        Index("fk_experiments_logs", "logs_object_id"),
-        Index("fk_experiments_parent", "parent_experiment_id"),
-        Index("fk_experiments_result", "result_object_id"),
-        Index("fk_experiments_script", "script_id"),
-        Index("idx_experiments_owner", "owner_user_id", "created_at"),
-        Index("idx_experiments_schedule_run", "schedule_run_id"),
-        Index("idx_experiments_version", "versions_id"),
-        Index(
-            "idx_experiments_workspace",
-            "workspace_id",
-            "experiment_status",
-            "created_at",
-        ),
-        {"comment": "实验记录"},
-    )
-
-    experiment_id: Mapped[str] = mapped_column(CHAR(26), primary_key=True)
-    workspace_id: Mapped[str] = mapped_column(CHAR(26), nullable=False)
-    owner_user_id: Mapped[str] = mapped_column(CHAR(26), nullable=False)
-    experiment_name: Mapped[str] = mapped_column(String(255), nullable=False)
-    source_type: Mapped[str] = mapped_column(
-        String(24), nullable=False, comment="python/notebook/schedule/rerun"
-    )
-    experiment_status: Mapped[str] = mapped_column(
-        String(24), nullable=False, server_default=text("'queued'")
-    )
-    state_version: Mapped[int] = mapped_column(
-        INTEGER, nullable=False, server_default=text("0"), comment="乐观锁版本"
-    )
-    created_at: Mapped[datetime.datetime] = mapped_column(
-        DATETIME(fsp=3), nullable=False, server_default=text("CURRENT_TIMESTAMP(3)")
-    )
-    script_id: Mapped[Optional[str]] = mapped_column(CHAR(26))
-    versions_id: Mapped[Optional[str]] = mapped_column(
-        CHAR(26), comment="工作副本运行时可为空"
-    )
-    schedule_run_id: Mapped[Optional[str]] = mapped_column(CHAR(26))
-    parent_experiment_id: Mapped[Optional[str]] = mapped_column(CHAR(26))
-    parameters_json: Mapped[Optional[dict]] = mapped_column(JSON)
-    environment_json: Mapped[Optional[dict]] = mapped_column(JSON)
-    result_summary: Mapped[Optional[str]] = mapped_column(String(2000))
-    logs_object_id: Mapped[Optional[str]] = mapped_column(CHAR(26))
-    result_object_id: Mapped[Optional[str]] = mapped_column(CHAR(26))
-    started_at: Mapped[Optional[datetime.datetime]] = mapped_column(DATETIME(fsp=3))
-    finished_at: Mapped[Optional[datetime.datetime]] = mapped_column(DATETIME(fsp=3))
-    duration_ms: Mapped[Optional[int]] = mapped_column(BIGINT)
-    is_deleted: Mapped[int] = mapped_column(
-        TINYINT(1), nullable=False, server_default=text("0")
-    )
-    deleted_at: Mapped[Optional[datetime.datetime]] = mapped_column(DATETIME(fsp=3))
-
-
-class ExperimentMetrics(Base):
-    __tablename__ = "experiment_metrics"
-    __table_args__ = (
-        Index("idx_experiment_metrics_lookup", "experiment_id", "metric_name", "step_no"),
-        {"comment": "实验指标，支持筛选和曲线"},
-    )
-
-    metric_id: Mapped[int] = mapped_column(BIGINT, primary_key=True)
-    experiment_id: Mapped[str] = mapped_column(CHAR(26), nullable=False)
-    metric_name: Mapped[str] = mapped_column(String(128), nullable=False)
-    recorded_at: Mapped[datetime.datetime] = mapped_column(
-        DATETIME(fsp=3), nullable=False, server_default=text("CURRENT_TIMESTAMP(3)")
-    )
-    metric_value: Mapped[Optional[decimal.Decimal]] = mapped_column(
-        Double(asdecimal=True)
-    )
-    metric_text: Mapped[Optional[str]] = mapped_column(String(1000))
-    step_no: Mapped[Optional[int]] = mapped_column(BigInteger)
-    is_deleted: Mapped[int] = mapped_column(
-        TINYINT(1), nullable=False, server_default=text("0")
-    )
-    deleted_at: Mapped[Optional[datetime.datetime]] = mapped_column(DATETIME(fsp=3))
-
-
-class ExperimentResources(Base):
-    __tablename__ = "experiment_resources"
-    __table_args__ = (
-        Index("fk_experiment_resources_resource", "resource_id"),
-        {"comment": "实验与数据资源"},
-    )
-
-    experiment_id: Mapped[str] = mapped_column(CHAR(26), primary_key=True)
-    resource_id: Mapped[str] = mapped_column(CHAR(26), primary_key=True)
-    resource_role: Mapped[str] = mapped_column(
-        String(16),
-        primary_key=True,
-        server_default=text("'input'"),
-        comment="input/output",
-    )
-    created_at: Mapped[datetime.datetime] = mapped_column(
-        DATETIME(fsp=3), nullable=False, server_default=text("CURRENT_TIMESTAMP(3)")
-    )
-    is_deleted: Mapped[int] = mapped_column(
-        TINYINT(1), nullable=False, server_default=text("0")
-    )
-    deleted_at: Mapped[Optional[datetime.datetime]] = mapped_column(DATETIME(fsp=3))

common/src/common/db/models/runtime.py

@@ -1,126 +1,13 @@
 import datetime
 from typing import Optional
 
-from sqlalchemy import BINARY, Index, String, Text, text
+from sqlalchemy import Index, String, Text, text
 from sqlalchemy.dialects.mysql import CHAR, DATETIME, INTEGER, TINYINT
 from sqlalchemy.orm import Mapped, mapped_column
 
 from common.db.base import Base
 
 
-class RuntimeInstances(Base):
-    __tablename__ = "runtime_instances"
-    __table_args__ = (
-        Index("fk_runtime_started_by", "started_by"),
-        Index("idx_runtime_lease", "actual_state", "lease_expires_at"),
-        Index("idx_runtime_owner_state", "owner_user_id", "actual_state"),
-        Index(
-            "idx_runtime_workspace_state",
-            "workspace_id",
-            "runtime_type",
-            "actual_state",
-        ),
-        {"comment": "Jupyter/未来 VS Code、OpenCode Runtime 实例"},
-    )
-
-    runtime_id: Mapped[str] = mapped_column(CHAR(26), primary_key=True)
-    workspace_id: Mapped[str] = mapped_column(CHAR(26), nullable=False)
-    runtime_type: Mapped[str] = mapped_column(
-        String(24), nullable=False, server_default=text("'jupyter'")
-    )
-    runtime_provider: Mapped[str] = mapped_column(
-        String(24), nullable=False, comment="process/docker/kubernetes"
-    )
-    proxy_base_path: Mapped[str] = mapped_column(String(512), nullable=False)
-    desired_state: Mapped[str] = mapped_column(
-        String(16), nullable=False, server_default=text("'running'")
-    )
-    actual_state: Mapped[str] = mapped_column(
-        String(24),
-        nullable=False,
-        server_default=text("'provisioning'"),
-        comment="provisioning/starting/running/unhealthy/stopping/stopped/failed",
-    )
-    state_version: Mapped[int] = mapped_column(
-        INTEGER, nullable=False, server_default=text("0"), comment="乐观锁版本"
-    )
-    started_by: Mapped[str] = mapped_column(CHAR(26), nullable=False)
-    created_at: Mapped[datetime.datetime] = mapped_column(
-        DATETIME(fsp=3), nullable=False, server_default=text("CURRENT_TIMESTAMP(3)")
-    )
-    updated_at: Mapped[datetime.datetime] = mapped_column(
-        DATETIME(fsp=3),
-        nullable=False,
-        server_default=text("CURRENT_TIMESTAMP(3) ON UPDATE CURRENT_TIMESTAMP(3)"),
-    )
-    owner_user_id: Mapped[Optional[str]] = mapped_column(
-        CHAR(26), comment="为空表示 Workspace 级 Runtime"
-    )
-    runtime_ref: Mapped[Optional[str]] = mapped_column(
-        String(255), comment="PID/container ID/pod UID"
-    )
-    host_node: Mapped[Optional[str]] = mapped_column(String(255))
-    internal_url: Mapped[Optional[str]] = mapped_column(String(1000))
-    started_at: Mapped[Optional[datetime.datetime]] = mapped_column(DATETIME(fsp=3))
-    last_heartbeat_at: Mapped[Optional[datetime.datetime]] = mapped_column(
-        DATETIME(fsp=3)
-    )
-    lease_expires_at: Mapped[Optional[datetime.datetime]] = mapped_column(
-        DATETIME(fsp=3)
-    )
-    stopped_at: Mapped[Optional[datetime.datetime]] = mapped_column(DATETIME(fsp=3))
-    error_message: Mapped[Optional[str]] = mapped_column(Text)
-    is_deleted: Mapped[int] = mapped_column(
-        TINYINT(1), nullable=False, server_default=text("0")
-    )
-    deleted_at: Mapped[Optional[datetime.datetime]] = mapped_column(DATETIME(fsp=3))
-
-
-class EditSessions(Base):
-    __tablename__ = "edit_sessions"
-    __table_args__ = (
-        Index("fk_edit_sessions_workspace", "workspace_id"),
-        Index(
-            "idx_edit_sessions_object",
-            "storage_object_id",
-            "session_status",
-            "expires_at",
-        ),
-        Index("idx_edit_sessions_runtime", "runtime_id", "session_status"),
-        Index("idx_edit_sessions_user", "user_id", "session_status"),
-        {"comment": "编辑会话审计"},
-    )
-
-    edit_session_id: Mapped[str] = mapped_column(CHAR(26), primary_key=True)
-    workspace_id: Mapped[str] = mapped_column(CHAR(26), nullable=False)
-    storage_object_id: Mapped[str] = mapped_column(CHAR(26), nullable=False)
-    user_id: Mapped[str] = mapped_column(CHAR(26), nullable=False)
-    lock_token_hash: Mapped[bytes] = mapped_column(
-        BINARY(32), nullable=False, comment="不保存原始 token"
-    )
-    session_status: Mapped[str] = mapped_column(
-        String(16),
-        nullable=False,
-        server_default=text("'active'"),
-        comment="active/closed/expired/failed",
-    )
-    started_at: Mapped[datetime.datetime] = mapped_column(
-        DATETIME(fsp=3), nullable=False, server_default=text("CURRENT_TIMESTAMP(3)")
-    )
-    last_heartbeat_at: Mapped[datetime.datetime] = mapped_column(
-        DATETIME(fsp=3), nullable=False, server_default=text("CURRENT_TIMESTAMP(3)")
-    )
-    expires_at: Mapped[datetime.datetime] = mapped_column(DATETIME(fsp=3), nullable=False)
-    runtime_id: Mapped[Optional[str]] = mapped_column(CHAR(26))
-    jupyter_session_id: Mapped[Optional[str]] = mapped_column(String(255))
-    ended_at: Mapped[Optional[datetime.datetime]] = mapped_column(DATETIME(fsp=3))
-    end_reason: Mapped[Optional[str]] = mapped_column(String(64))
-    is_deleted: Mapped[int] = mapped_column(
-        TINYINT(1), nullable=False, server_default=text("0")
-    )
-    deleted_at: Mapped[Optional[datetime.datetime]] = mapped_column(DATETIME(fsp=3))
-
-
 class WorkspaceOperations(Base):
     __tablename__ = "workspace_operations"
     __table_args__ = (

common/src/common/db/models/scripts.py

@@ -63,38 +63,6 @@ class Scripts(Base):
     deleted_at: Mapped[Optional[datetime.datetime]] = mapped_column(DATETIME(fsp=3))
 
 
-class NotebookSnapshots(Base):
-    __tablename__ = "notebook_snapshots"
-    __table_args__ = (
-        Index("fk_snapshots_created_by", "created_by"),
-        Index("fk_snapshots_source_object", "source_object_id"),
-        Index("idx_snapshots_workspace_created", "workspace_id", "created_at"),
-        Index("uk_snapshots_artifact", "artifact_object_id", unique=True),
-        Index("uk_snapshots_script_hash", "script_id", "content_hash", unique=True),
-        {"comment": "Notebook 开发快照，append-only"},
-    )
-
-    snapshot_id: Mapped[str] = mapped_column(CHAR(26), primary_key=True)
-    workspace_id: Mapped[str] = mapped_column(CHAR(26), nullable=False)
-    script_id: Mapped[str] = mapped_column(CHAR(26), nullable=False)
-    source_object_id: Mapped[str] = mapped_column(CHAR(26), nullable=False)
-    artifact_object_id: Mapped[str] = mapped_column(CHAR(26), nullable=False)
-    snapshot_name: Mapped[str] = mapped_column(String(255), nullable=False)
-    content_hash: Mapped[str] = mapped_column(CHAR(64), nullable=False)
-    outputs_stripped: Mapped[int] = mapped_column(
-        TINYINT(1), nullable=False, server_default=text("1")
-    )
-    created_by: Mapped[str] = mapped_column(CHAR(26), nullable=False)
-    created_at: Mapped[datetime.datetime] = mapped_column(
-        DATETIME(fsp=3), nullable=False, server_default=text("CURRENT_TIMESTAMP(3)")
-    )
-    description: Mapped[Optional[str]] = mapped_column(String(1000))
-    is_deleted: Mapped[int] = mapped_column(
-        TINYINT(1), nullable=False, server_default=text("0")
-    )
-    deleted_at: Mapped[Optional[datetime.datetime]] = mapped_column(DATETIME(fsp=3))
-
-
 class Versions(Base):
     __tablename__ = "versions"
     __table_args__ = (

migrations/versions/20260728_0002_demo_workspaces_users.py

@@ -1,112 +0,0 @@
-"""demo workspaces and users
-
-Revision ID: 20260728_0002
-Revises: 20260724_0001
-Create Date: 2026-07-28
-"""
-
-from collections.abc import Sequence
-
-from alembic import op
-
-
-revision: str = "20260728_0002"
-down_revision: str | Sequence[str] | None = "20260724_0001"
-branch_labels: str | Sequence[str] | None = None
-depends_on: str | Sequence[str] | None = None
-
-
-ADMIN_ROLE = "0000000000HNQN4KM476QNKW1C"
-DEVELOPER_ROLE = "00000000005RCQ4GPGBK3WZYMM"
-MODEL_WORKSPACE = "00000000000BM630VT9ARVFZPC"
-RISK_WORKSPACE = "0000000000AE0NC0V5T424KK86"
-ZHANG = "0000000000RF6FG1SDBXG59S13"
-LI = "0000000000H2QYCGPCWQM1JSGS"
-WANG = "0000000000RWG40ESZPGJT629J"
-ZHAO = "00000000004CQV7WASJA6N6FW4"
-
-
-def upgrade() -> None:
-    op.execute(
-        f"""
-        INSERT INTO roles
-            (role_id, role_code, role_name, role_scope, is_builtin)
-        VALUES
-            ('{ADMIN_ROLE}', 'admin', '管理员', 'workspace', 1),
-            ('{DEVELOPER_ROLE}', 'developer', '开发人员', 'workspace', 1)
-        ON DUPLICATE KEY UPDATE
-            role_name = VALUES(role_name),
-            role_scope = VALUES(role_scope)
-        """
-    )
-    op.execute(
-        f"""
-        INSERT INTO users
-            (user_id, username, display_name, password_hash, status, email)
-        VALUES
-            ('{ZHANG}', 'admin-zhang', '张三', 'demo-login-disabled', 'active',
-             'zhangsan@example.local'),
-            ('{LI}', 'admin-li', '李四', 'demo-login-disabled', 'active',
-             'lisi@example.local'),
-            ('{WANG}', 'dev-wang', '王五', 'demo-login-disabled', 'active',
-             'wangwu@example.local'),
-            ('{ZHAO}', 'dev-zhao', '赵六', 'demo-login-disabled', 'active',
-             'zhaoliu@example.local')
-        ON DUPLICATE KEY UPDATE
-            username = VALUES(username),
-            display_name = VALUES(display_name),
-            status = 'active',
-            email = VALUES(email)
-        """
-    )
-    op.execute(
-        f"""
-        INSERT INTO workspaces
-            (workspace_id, workspace_code, workspace_name, active_root_uri,
-             quota_bytes, used_bytes, status, created_by, description,
-             artifact_bucket, artifact_prefix)
-        VALUES
-            ('{MODEL_WORKSPACE}', 'model-dev', '模型开发 Workspace',
-             'file:///workspace/workspaces/model-dev', 0, 0, 'active',
-             '{ZHANG}', '模型开发与脚本调度', 'model-platform',
-             'workspaces/model-dev'),
-            ('{RISK_WORKSPACE}', 'risk-validation', '风险验证 Workspace',
-             'file:///workspace/workspaces/risk-validation', 0, 0, 'active',
-             '{LI}', '风险模型验证与批处理', 'model-platform',
-             'workspaces/risk-validation')
-        ON DUPLICATE KEY UPDATE
-            workspace_name = VALUES(workspace_name),
-            active_root_uri = VALUES(active_root_uri),
-            status = 'active',
-            description = VALUES(description)
-        """
-    )
-    values = []
-    for workspace_id in (MODEL_WORKSPACE, RISK_WORKSPACE):
-        for user_id, role_id in (
-            (ZHANG, ADMIN_ROLE),
-            (LI, ADMIN_ROLE),
-            (WANG, DEVELOPER_ROLE),
-            (ZHAO, DEVELOPER_ROLE),
-        ):
-            values.append(
-                f"('{workspace_id}', '{user_id}', '{role_id}', 'active')"
-            )
-    op.execute(
-        """
-        INSERT INTO workspace_members
-            (workspace_id, user_id, role_id, member_status)
-        VALUES
-        """
-        + ",\n".join(values)
-        + """
-        ON DUPLICATE KEY UPDATE
-            role_id = VALUES(role_id),
-            member_status = 'active'
-        """
-    )
-
-
-def downgrade() -> None:
-    # 演示身份可能已产生业务数据，降级时保留，避免破坏外键引用。
-    pass

migrations/versions/20260728_0003_schedule_artifact_visibility.py

@@ -1,41 +0,0 @@
-"""decouple schedule artifact visibility from version history
-
-Revision ID: 20260728_0003
-Revises: 20260728_0002
-Create Date: 2026-07-28
-"""
-
-from collections.abc import Sequence
-
-from alembic import op
-import sqlalchemy as sa
-from sqlalchemy.dialects import mysql
-
-
-revision: str = "20260728_0003"
-down_revision: str | Sequence[str] | None = "20260728_0002"
-branch_labels: str | Sequence[str] | None = None
-depends_on: str | Sequence[str] | None = None
-
-
-def upgrade() -> None:
-    op.add_column(
-        "versions",
-        sa.Column(
-            "schedule_hidden_at",
-            mysql.DATETIME(fsp=3),
-            nullable=True,
-            comment="从调度稳定版本列表移除的时间；不影响版本和运行历史",
-        ),
-    )
-    op.create_index(
-        "idx_versions_schedule_visible",
-        "versions",
-        ["workspace_id", "schedule_hidden_at", "created_at"],
-        unique=False,
-    )
-
-
-def downgrade() -> None:
-    op.drop_index("idx_versions_schedule_visible", table_name="versions")
-    op.drop_column("versions", "schedule_hidden_at")

migrations/versions/20260730_0004_remove_redis_lock_name.py

@@ -1,49 +0,0 @@
-"""remove Redis-specific lock column naming
-
-Revision ID: 20260730_0004
-Revises: 20260728_0003
-Create Date: 2026-07-30
-"""
-
-from collections.abc import Sequence
-
-from alembic import context, op
-import sqlalchemy as sa
-
-revision: str = "20260730_0004"
-down_revision: str | None = "20260728_0003"
-branch_labels: str | Sequence[str] | None = None
-depends_on: str | Sequence[str] | None = None
-
-
-def _column_names() -> set[str]:
-    inspector = sa.inspect(op.get_bind())
-    return {item["name"] for item in inspector.get_columns("edit_sessions")}
-
-
-def upgrade() -> None:
-    if context.is_offline_mode():
-        return
-    columns = _column_names()
-    if "redis_lock_key" in columns and "lock_key" not in columns:
-        op.alter_column(
-            "edit_sessions",
-            "redis_lock_key",
-            new_column_name="lock_key",
-            existing_type=sa.String(length=512),
-            existing_nullable=False,
-        )
-
-
-def downgrade() -> None:
-    if context.is_offline_mode():
-        return
-    columns = _column_names()
-    if "lock_key" in columns and "redis_lock_key" not in columns:
-        op.alter_column(
-            "edit_sessions",
-            "lock_key",
-            new_column_name="redis_lock_key",
-            existing_type=sa.String(length=512),
-            existing_nullable=False,
-        )