Pin supported Python to 3.12+ to match the CI matrix

CI tests py3.12 and py3.13 only after dropping py3.11 in 038fb5d, so
the project metadata and docs that still claimed py3.10 / py3.11
support were inaccurate. Tighten everything to >=3.12.

pyproject.toml:
- requires-python = ">=3.12"
- Drop "Programming Language :: Python :: 3.10" and 3.11 classifiers
- Drop "tomli>=2.0.0; python_version < '3.11'" (stdlib tomllib in 3.11+)
- Drop "typing-extensions>=4.10.0" (only used as a fallback for the
  py<3.11 typing.Self import path)

src/aragog/parser.py: collapse the sys.version_info < (3, 11) tomli /
typing_extensions fallback block to a single import tomllib + from
typing import Self. Drop the now-unused import sys.

Docs (installation, firstrun, build_test): update Python-version
claims to match (>= 3.12; CI matrix tests 3.12 and 3.13).

Author: timlichtenberg

docs/How-to/installation.md

@@ -5,7 +5,7 @@
 
 ## Quick install
 
-The basic procedure is to install Aragog into a Python environment. For example, if you are using a Conda distribution to create and manage Python environments (e.g. [Anaconda](https://www.anaconda.com/download)), create a new environment noting that Aragog requires Python >= 3.10. Once created, make sure to activate the environment. To achieve this, terminal commands are given below, but you can also use the Anaconda Navigator (or similar GUI) to create and activate environments:
+The basic procedure is to install Aragog into a Python environment. For example, if you are using a Conda distribution to create and manage Python environments (e.g. [Anaconda](https://www.anaconda.com/download)), create a new environment noting that Aragog requires Python >= 3.12. Once created, make sure to activate the environment. To achieve this, terminal commands are given below, but you can also use the Anaconda Navigator (or similar GUI) to create and activate environments:
 
 ```sh
 conda create -n aragog python

docs/Tutorials/build_test.md

@@ -156,10 +156,10 @@ If a test is missing from the collection output, the most likely causes are a mi
 
 ## 5. Verify CI picks them up
 
-After pushing the branch, the **Unit Tests** workflow runs `pytest -m "unit and not slow"` against ubuntu-latest and macos-latest with Python 3.11, 3.12, and 3.13.
+After pushing the branch, the **Unit Tests** workflow runs `pytest -m "unit and not slow"` against ubuntu-latest and macos-latest with Python 3.12 and 3.13.
 The test file should appear under one of the green checks; if it does not, the test was not discovered (see step 4).
 
-The **Integration Tests** workflow runs nightly and adds `-m "smoke or slow"`; unit tests run there too as part of `unit or smoke or slow`.
+The **Integration Tests** workflow runs nightly and on every push to main; it adds `-m "smoke or integration or slow"`. Unit tests run there too as part of `unit or smoke or integration or slow`.
 
 ## What's next
 

docs/Tutorials/firstrun.md

@@ -12,7 +12,7 @@ Reach a **first successful integration** of a coupled-mantle setup and read its
 
 ## Assumptions
 
-- You are using Python 3.10+ (3.12 recommended).
+- You are using Python 3.12 or 3.13.
 - Aragog is installed (see [Installation](../How-to/installation.md)).
 - A directory of SPIDER-format pressure-entropy EOS tables is available on disk (see [Reference: data](../Reference/data.md) for the file format and the canonical PALEOS data sources).
 

pyproject.toml

@@ -7,7 +7,7 @@ name = "fwl-aragog"
 version = "26.05.08"
 description = "1-D interior dynamics of rocky mantles that are solid, liquid, or mixed phase"
 readme = "README.md"
-requires-python = ">=3.10"
+requires-python = ">=3.12"
 license = {text = "GPL-3.0-or-later"}
 authors = [
     {name="Dan J. Bower",            email="dbower@ethz.ch"},
@@ -24,8 +24,6 @@ classifiers = [
     "License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)",
     "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",
     "Topic :: Scientific/Engineering :: Astronomy",
@@ -38,8 +36,6 @@ dependencies = [
     "thermochem>=0.8.2",
     "matplotlib>=3.8.3",
     "typed-configparser>=1.1.0",
-    "typing-extensions>=4.10.0",
-    "tomli>=2.0.0; python_version < '3.11'",
     "click>=8.1.3",
     "platformdirs>=3.10.0",
 ]

src/aragog/parser.py

@@ -13,22 +13,15 @@
 from __future__ import annotations
 
 import logging
-import sys
+import tomllib  # noqa: F401
 from dataclasses import dataclass, field
 from pathlib import Path
-from typing import Any
+from typing import Any, Self
 
 import numpy as np
 import numpy.typing as npt
 from typed_configparser import ConfigParser
 
-if sys.version_info < (3, 11):
-    import tomli as tomllib  # noqa: F401  (3.10 fallback installed via pyproject)
-    from typing_extensions import Self
-else:
-    import tomllib  # noqa: F401
-    from typing import Self
-
 logger: logging.Logger = logging.getLogger('fwl.' + __name__)