feat(annotation): implement file version management for annotation feature

Add support for detecting new file versions and switching to them:

Backend Changes:
- Add file_version column to AnnotationResult model
- Create Alembic migration for database schema update
- Implement check_file_version() method to compare annotation and file versions
- Implement use_new_version() method to clear annotations and update version
- Update upsert_annotation() to record file version when saving
- Add new API endpoints: GET /version and POST /use-new-version
- Add FileVersionCheckResponse and UseNewVersionResponse schemas

Frontend Changes:
- Add checkFileVersionUsingGet and useNewVersionUsingPost API calls
- Add version warning banner showing current vs latest file version
- Add 'Use New Version' button with confirmation dialog
- Clear version info state when switching files to avoid stale warnings

Bug Fixes:
- Fix previousFileVersion returning updated value (save before update)
- Handle null file_version for historical data compatibility
- Fix segmented annotation clearing (preserve structure, clear results)
- Fix files without annotations incorrectly showing new version warnings
- Preserve total_segments when clearing segmented annotations

Files Modified:
- frontend/src/pages/DataAnnotation/Annotate/LabelStudioTextEditor.tsx
- frontend/src/pages/DataAnnotation/annotation.api.ts
- runtime/datamate-python/app/db/models/annotation_management.py
- runtime/datamate-python/app/module/annotation/interface/editor.py
- runtime/datamate-python/app/module/annotation/schema/editor.py
- runtime/datamate-python/app/module/annotation/service/editor.py

New Files:
- runtime/datamate-python/alembic.ini
- runtime/datamate-python/alembic/env.py
- runtime/datamate-python/alembic/script.py.mako
- runtime/datamate-python/alembic/versions/20250205_0001_add_file_version.py

runtime/datamate-python/alembic/env.py

@@ -0,0 +1,54 @@
+"""Alembic environment configuration"""
+
+from logging.config import fileConfig
+from sqlalchemy import engine_from_config, pool
+from alembic import context
+import sys
+import os
+
+# 添加项目路径
+sys.path.insert(0, os.path.dirname(os.path.dirname(__file__)))
+
+from app.db.session import Base
+from app.db.models import *
+
+config = context.config
+if config.config_file_name is not None:
+    fileConfig(config.config_file_name)
+
+target_metadata = Base.metadata
+
+
+def run_migrations_offline() -> None:
+    """Run migrations in 'offline' mode."""
+    url = config.get_main_option("sqlalchemy.url")
+    context.configure(
+        url=url,
+        target_metadata=target_metadata,
+        literal_binds=True,
+        dialect_opts={"paramstyle": "named"},
+    )
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def run_migrations_online() -> None:
+    """Run migrations in 'online' mode."""
+    connectable = engine_from_config(
+        config.get_section(config.config_ini_section, {}),
+        prefix="sqlalchemy.",
+        poolclass=pool.NullPool,
+    )
+
+    with connectable.connect() as connection:
+        context.configure(connection=connection, target_metadata=target_metadata)
+
+        with context.begin_transaction():
+            context.run_migrations()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()