build(deps-dev): bump mypy from 1.17.1 to 2.4.0

pyproject.toml

@@ -10,7 +10,7 @@ dependencies = []
 
 [dependency-groups]
 dev = [
-    "mypy==1.17.1",
+    "mypy==2.4.0",
     "yamllint==1.38.0",
     "websockets>=17.3,<18",
 ]

tools/codegen/generate_error_catalogs.py

@@ -4,7 +4,7 @@
 from pathlib import Path
 from typing import Any, Final
 
-import yaml  # type: ignore[import-untyped]  # PyYAML ships without inline type stubs
+import yaml
 
 ROOT: Final[Path] = Path(__file__).resolve().parents[2]
 SOURCE: Final[Path] = ROOT / "contracts/errors/error-catalog.yaml"

tools/contracts/detect_breaking_error_changes.py

@@ -8,7 +8,7 @@
 import subprocess
 from typing import Any, Sequence
 
-import yaml  # type: ignore[import-untyped]  # PyYAML ships without inline type stubs
+import yaml
 
 ROOT = Path(__file__).resolve().parents[2]
 CATALOG_RELATIVE = "contracts/errors/error-catalog.yaml"

tools/errors/build_catalog.py

@@ -8,7 +8,7 @@
 
 from pathlib import Path
 from typing import Any, Dict, List
-import yaml  # type: ignore[import-untyped]  # PyYAML ships without inline type stubs
+import yaml
 
 from tools.errors.validate_catalog import (
     validate_catalog,

tools/errors/test_validate_catalog.py

@@ -119,7 +119,7 @@ def test_legacy_validation_and_current_catalog(self) -> None:
 
     def test_lifecycle_history_retires_err_12(self) -> None:
         """Verify lifecycle history records ERR-12 retirement without replacement."""
-        import yaml  # type: ignore[import-untyped]
+        import yaml
         lifecycle_path = ROOT / "contracts/errors/lifecycle-history.yaml"
         self.assertTrue(lifecycle_path.exists())
         records = yaml.safe_load(lifecycle_path.read_text(encoding="utf-8"))

tools/errors/validate_catalog.py

@@ -18,7 +18,7 @@
 import sys
 from typing import Any, Dict, List, Optional, Set, Tuple
 
-import yaml  # type: ignore[import-untyped]  # PyYAML ships without inline type stubs
+import yaml
 
 CODE_PATTERN = re.compile(r"^[1-9]{4}(0[1-9]|[1-9][0-9])$")
 LEGACY_CODE_PATTERN = re.compile(r"^ERR-[0-9]{2}$")

tools/errors/validate_six_digit_catalog.py

@@ -7,7 +7,7 @@
 import sys
 from typing import Any
 
-import yaml  # type: ignore[import-untyped]  # PyYAML ships without inline type stubs
+import yaml
 
 from tools.errors.validate_catalog import (
     validate_domains_registry,

tools/ops/validate_error_rollout.py

@@ -8,7 +8,7 @@
 import sys
 from typing import Any
 
-import yaml  # type: ignore[import-untyped]  # PyYAML ships without inline type stubs
+import yaml
 
 ROOT = Path(__file__).resolve().parents[2]
 MANIFEST_PATH = ROOT / "infra/deploy/canary/error-rollout-config.yaml"

tools/qa/check_error_hygiene.py

@@ -7,7 +7,7 @@
 from pathlib import Path
 from typing import Final
 
-import yaml  # type: ignore[import-untyped]  # PyYAML ships without inline type stubs
+import yaml
 
 ROOT: Final[Path] = Path(__file__).resolve().parents[2]
 ALLOWLIST_PATH: Final[Path] = ROOT / "tools/qa/error_hygiene_allowlist.yaml"