fix: resolve all ruff errors

Author: nulone

pyproject.toml

@@ -56,6 +56,8 @@ include = ["src*"]
 target-version = "py310"
 line-length = 100
 src = ["src", "tests"]
+
+[tool.ruff.lint]
 select = [
     "E",      # pycodestyle errors
     "W",      # pycodestyle warnings
@@ -94,7 +96,7 @@ ignore = [
     "ERA001",   # Commented-out code (useful for documentation in tests)
 ]
 
-[tool.ruff.isort]
+[tool.ruff.lint.isort]
 known-first-party = ["src"]
 
 [tool.mypy]

src/reviewer.py

@@ -9,7 +9,7 @@
 import json
 import logging
 from collections import Counter
-from typing import Any
+from typing import Any, ClassVar
 
 from src.domain import Attempt, ErrorType, ExampleResult, Task
 from src.executor import ExecutionResult, JQExecutor
@@ -39,7 +39,7 @@ class AlgorithmicReviewer:
     """
 
     # Error type priority for selecting primary error (higher index = higher priority)
-    _ERROR_PRIORITY: dict[ErrorType, int] = {
+    _ERROR_PRIORITY: ClassVar[dict[ErrorType, int]] = {
         ErrorType.NONE: 0,
         ErrorType.ORDER: 1,
         ErrorType.MISSING_EXTRA: 2,