docs: restructure docs into diataxis (#121)

docs/how-to/dev-setup.md

@@ -0,0 +1,32 @@
+# Dev setup
+
+Set up Takopi for local development and run the checks.
+
+## Clone and run
+
+```bash
+git clone https://github.com/banteg/takopi
+cd takopi
+
+# Run directly with uv (installs deps automatically)
+uv run takopi --help
+```
+
+## Install locally (optional)
+
+```bash
+uv tool install .
+takopi --help
+```
+
+## Run checks
+
+```bash
+uv run pytest
+uv run ruff check src tests
+uv run ty check .
+
+# Or all at once
+just check
+```
+