chore: bump minimum Python to 3.12

Update requires-python, classifiers, pyright pythonVersion, ruff
target-version, and mypy python_version to 3.12. Remove 3.9/3.10/3.11
from CI test matrix, keep 3.12 and 3.13.

Co-authored-by: Hanzo Dev <[email protected]>

.github/workflows/test.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.10", "3.11", "3.12"]
+        python-version: ["3.12", "3.13"]
 
     steps:
     - uses: actions/checkout@v4

pyproject.toml

@@ -18,13 +18,10 @@ dependencies = [
     "h11>=0.16.0",
     "urllib3>=2.6.0",
 ]
-requires-python = ">= 3.9"
+requires-python = ">= 3.12"
 classifiers = [
   "Typing :: Typed",
   "Intended Audience :: Developers",
-  "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",
   "Operating System :: OS Independent",
@@ -178,7 +175,7 @@ filterwarnings = [
 # there are a couple of flags that are still disabled by
 # default in strict mode as they are experimental and niche.
 typeCheckingMode = "strict"
-pythonVersion = "3.8"
+pythonVersion = "3.12"
 
 exclude = [
     "_dev",
@@ -229,7 +226,7 @@ reportOptionalIterable = false
 [tool.ruff]
 line-length = 120
 output-format = "grouped"
-target-version = "py38"
+target-version = "py312"
 exclude = [
   "pkg/hanzo-agent",  # submodule - linted separately
   "pkg/hanzo-memory",  # needs careful review - has complex redefinitions
@@ -407,7 +404,7 @@ extra-standard-library = ["typing_extensions"]
 known-first-party = ["hanzoai", "tests"]
 
 [tool.mypy]
-python_version = "3.8"
+python_version = "3.12"
 ignore_missing_imports = true
 # Relax type checking - SDK has many optional dependencies and dynamic imports
 check_untyped_defs = false