fix: resolve all ruff linting errors and add lint CI check

- Fix ambiguous fullwidth characters (commas, parentheses) in strings and comments
- Replace Chinese comments with English equivalents
- Fix unused imports with proper noqa annotations for intentional imports
- Fix bare except clauses with specific exception types
- Fix redefined variables and undefined names
- Add ruff noqa annotations for generated protobuf files
- Add lint and format check to GitHub Actions CI pipeline

packages/leann-core/pyproject.toml

@@ -35,9 +35,9 @@ dependencies = [
 
 [project.optional-dependencies]
 colab = [
-    "torch>=2.0.0,<3.0.0",  # 限制torch版本避免冲突
-    "transformers>=4.30.0,<5.0.0",  # 限制transformers版本
-    "accelerate>=0.20.0,<1.0.0",  # 限制accelerate版本
+    "torch>=2.0.0,<3.0.0",  # Limit torch version to avoid conflicts
+    "transformers>=4.30.0,<5.0.0",  # Limit transformers version
+    "accelerate>=0.20.0,<1.0.0",  # Limit accelerate version
 ]
 
 [project.scripts]