Add Python 3.13 + 3.14 to CI matrices

Extend pytest-headless (quality.yml) plus the legacy hardware-smoke
matrices (dev.yml / stable.yml) from {3.10, 3.11, 3.12} to
{3.10, 3.11, 3.12, 3.13, 3.14}. Also reflect the broader supported
range in pyproject.toml classifiers so PyPI metadata matches.

Publish step in stable.yml stays on 3.12 — no need to bump the
build interpreter.

Author: JE-Chen

.github/workflows/dev.yml

@@ -17,7 +17,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [ "3.10", "3.11", "3.12" ]
+        python-version: [ "3.10", "3.11", "3.12", "3.13", "3.14" ]
 
     steps:
       - uses: actions/checkout@v4

.github/workflows/quality.yml

@@ -59,7 +59,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [ "3.10", "3.11", "3.12" ]
+        python-version: [ "3.10", "3.11", "3.12", "3.13", "3.14" ]
     steps:
       - uses: actions/checkout@v4
 

.github/workflows/stable.yml

@@ -21,7 +21,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [ "3.10", "3.11", "3.12" ]
+        python-version: [ "3.10", "3.11", "3.12", "3.13", "3.14" ]
 
     steps:
       - uses: actions/checkout@v4

pyproject.toml

@@ -24,6 +24,10 @@ dependencies = [
 ]
 classifiers = [
     "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",
     "Development Status :: 2 - Pre-Alpha",
     "Environment :: Win32 (MS Windows)",
     "Environment :: MacOS X",