build: drop support for Python 3.8 and 3.9 (#8)

Co-authored-by: Claude Haiku 4.5 <[email protected]>

Author: hasansezertasan

.python-version

@@ -1 +1 @@
-3.8
+3.10

CLAUDE.md

@@ -0,0 +1,51 @@
+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Project Overview
+
+ossin is a Python CLI utility that displays system information (OS, Python environment, platform) using Rich for terminal output. Built with Typer, it supports table, panel, and JSON output formats.
+
+## Development Commands
+
+```bash
+uv sync                          # Install dependencies
+uv run ossin                     # Run the CLI
+uv run ossin --format json       # Run with JSON output
+uv run pytest                    # Run tests
+```
+
+### Linting & Type Checking (CI runs these on Ubuntu only)
+
+```bash
+uv run ruff check src tests      # Lint
+uv run ruff format --check .     # Format check
+uv run mypy                      # Type check (strict mode)
+uv run ty check                  # Type check with ty
+uv run pyrefly check             # Type check with pyrefly
+uv run pyright                   # Type check with pyright
+uv run vulture src tests         # Dead code detection
+uv run validate-pyproject pyproject.toml
+```
+
+## Architecture
+
+- `src/ossin/core.py` — `SystemInfo` TypedDict and `get_system_info()` function (stdlib only: `platform`, `sys`)
+- `src/ossin/cli.py` — Typer app with three output renderers (table, panels, JSON) using Rich
+- `src/ossin/__main__.py` — Entry point, imports and runs `cli.app`
+- Version is dynamic from VCS via hatch-vcs, generated into `src/ossin/_version.py` at build time
+
+## Code Style
+
+- **Ruff** with ALL rules selected, preview mode, unsafe fixes enabled. Ignored rules: B008, COM812, FBT001, FBT003
+- No relative imports allowed (`ban-relative-imports = "all"`)
+- McCabe complexity limit: 4
+- Docstring convention: PEP 257
+- All type checkers run in strict/error-on-warning mode
+- Target Python version: 3.10
+
+## CI/CD
+
+- PR titles must follow **Conventional Commits** format (enforced by check-pr-title workflow)
+- CI runs linters/type-checkers on Ubuntu only; runs the CLI on all three platforms (Ubuntu, macOS, Windows)
+- CD publishes to PyPI via trusted publishing on GitHub release, then triggers Homebrew and Scoop manifest updates

pyproject.toml

@@ -34,8 +34,6 @@ classifiers = [
   "Programming Language :: Python :: 3.12",
   "Programming Language :: Python :: 3.13",
   "Programming Language :: Python :: 3.14",
-  "Programming Language :: Python :: 3.8",
-  "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: Implementation :: CPython",
   "Programming Language :: Python :: Implementation :: PyPy",
   "Programming Language :: Python",
@@ -45,7 +43,7 @@ classifiers = [
   "Topic :: Terminals",
   "Typing :: Typed",
 ]
-requires-python = ">=3.8"
+requires-python = ">=3.10"
 dependencies = [
     "typer>=0.16.0",
 ]
@@ -123,7 +121,7 @@ output-format = "full"
 preview = true
 show-fixes = true
 src = ["src", "tests", "examples"]
-target-version = "py38"
+target-version = "py310"
 unsafe-fixes = true
 
 
@@ -177,7 +175,7 @@ max-complexity = 4
 [tool.mypy]
 files = ["src"]
 pretty = true
-python_version = "3.8"
+python_version = "3.10"
 show_error_codes = true
 strict = true
 
@@ -192,13 +190,13 @@ respect-ignore-files = false
 
 
 [tool.ty.environment]
-python-version = "3.8"
+python-version = "3.10"
 
 
 [tool.ty.terminal]
 error-on-warning = true
 
 
 [tool.pyrefly]
-python-version = "3.8"
+python-version = "3.10"
 project-includes = ["src"]