feat(python-version): support Python 3.9-3.14, first-class 3.12/3.13

Wide-support / narrow-first-class model for Python versions across the
PyAuto family. Python 3.12 and 3.13 remain the recommended versions.
3.9, 3.10, 3.11, 3.14 install cleanly but emit a loud bypassable
warning at import time. JAX moved to optional [jax] extra gated on
python_version >= '3.11' (so 3.9/3.10 users get numpy-only mode
without install failures).

Coordinated change across PyAutoConf, PyAutoArray, PyAutoFit,
PyAutoGalaxy, PyAutoLens, PyAutoBuild, and the 6 workspace repos. See
sibling PRs on the feature/python-version-policy branch in each repo.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: 2 people

.github/workflows/main.yml

@@ -8,7 +8,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ['3.12', '3.13']
+        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13', '3.14']
     steps:
     - name: Checkout PyAutoConf
       uses: actions/checkout@v2

pyproject.toml

@@ -8,7 +8,7 @@ dynamic = ["version"]
 description="Open-Source Strong Lensing"
 readme = { file = "README.rst", content-type = "text/x-rst" }
 license = { text = "MIT" }
-requires-python = ">=3.12"
+requires-python = ">=3.9"
 authors = [
     { name = "James Nightingale", email = "James.Nightingale@newcastle.ac.uk" },
     { name = "Richard Hayes", email = "richard@rghsoftware.co.uk" },
@@ -18,8 +18,12 @@ classifiers = [
   "Topic :: Scientific/Engineering :: Physics",
   "Natural Language :: English",
   "Operating System :: OS Independent",
+  "Programming Language :: Python :: 3.9",
+  "Programming Language :: Python :: 3.10",
+  "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: 3.12",
-  "Programming Language :: Python :: 3.13"
+  "Programming Language :: Python :: 3.13",
+  "Programming Language :: Python :: 3.14"
 ]
 keywords = ["cli"]
 dependencies = [
@@ -42,7 +46,9 @@ local_scheme = "no-local-version"
 
 
 [project.optional-dependencies]
-optional=[
+jax = ["autogalaxy[jax]"]
+optional = [
+    "autolens[jax]",
     "numba",
     "pynufft",
     "ultranest==3.6.2",