feat: extend CI matrix to Python 3.10+ to discover minimum supported version (#322)

Lower requires-python from >=3.12 to >=3.10, expand the CI test matrix
to cover 3.10 through 3.14, and fix ruff lint issues triggered by the
lower target version (import sorting in scripts, PERF203 in integration
tests). No library source changes required — the code supports 3.10 as-is.

Refs: #321

Co-authored-by: wphillipmoore-claude <255925739+wphillipmoore-claude@users.noreply.github.com>

Author: wphillipmoore

.github/workflows/ci.yml

@@ -135,7 +135,7 @@ jobs:
     needs: docs-only
     strategy:
       matrix:
-        python-version: ["3.12", "3.13", "3.14"]
+        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
 
     steps:
       - name: Docs-only short-circuit

pyproject.toml

@@ -10,13 +10,15 @@ readme = "README.md"
 license = "GPL-3.0-or-later"
 license-files = ["LICENSE"]
 authors = [{ name = "Phillip Moore", email = "w.phillip.moore@gmail.com" }]
-requires-python = ">=3.12,<4.0"
+requires-python = ">=3.10,<4.0"
 keywords = ["ibm", "mq", "mqsc", "rest-api", "messaging", "queue-manager"]
 classifiers = [
     "Development Status :: 4 - Beta",
     "Intended Audience :: Developers",
     "Operating System :: OS Independent",
     "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.13",
     "Programming Language :: Python :: 3.14",
@@ -62,7 +64,7 @@ pymqrest = ["py.typed", "mapping-data.json"]
 
 [tool.ruff]
 line-length = 120
-target-version = "py312"
+target-version = "py310"
 src = ["src", "tests"]
 extend-exclude = ["docs/archive"]
 
@@ -103,7 +105,7 @@ docstring-quotes = "double"
 quote-style = "double"
 
 [tool.mypy]
-python_version = "3.12"
+python_version = "3.10"
 strict = true
 warn_return_any = true
 warn_unused_configs = true

scripts/dev/validate_changelog.py

@@ -4,9 +4,10 @@
 from __future__ import annotations
 
 import re
-import tomllib
 from pathlib import Path
 
+import tomllib
+
 
 def load_version() -> str:
     """Load the version from pyproject.toml."""

scripts/dev/validate_dependency_specs.py

@@ -4,9 +4,10 @@
 from __future__ import annotations
 
 import re
-import tomllib
 from pathlib import Path
 
+import tomllib
+
 ANCHOR_PREFIX = "# Anchor:"
 DEPENDENCY_RECORDS_DIR = Path("docs/dependencies")
 PYPROJECT_PATH = Path("pyproject.toml")

scripts/dev/validate_pypi_version.py

@@ -7,13 +7,14 @@
 import json
 import re
 import ssl
-import tomllib
 import urllib.error
 import urllib.request
 from dataclasses import dataclass
 from pathlib import Path
 from typing import TYPE_CHECKING
 
+import tomllib
+
 if TYPE_CHECKING:
     from collections.abc import Sequence
 

scripts/dev/validate_version.py

@@ -7,11 +7,12 @@
 import os
 import re
 import subprocess
-import tomllib
 from dataclasses import dataclass
 from pathlib import Path
 from typing import TYPE_CHECKING
 
+import tomllib
+
 if TYPE_CHECKING:
     from collections.abc import Sequence
 

tests/integration/test_mq_integration.py

@@ -638,7 +638,7 @@ def _wait_for_rest_ready(config: IntegrationConfig) -> None:
     while time.monotonic() < deadline:
         try:
             session.display_qmgr()
-        except MQRESTError as error:
+        except MQRESTError as error:  # noqa: PERF203
             last_error = error
             time.sleep(MQ_READY_SLEEP_SECONDS)
         else: