docs(AGENTS): Update commands to use just

why: Document new justfile-based workflow for AI agents
what:
- Replace make commands with just equivalents in documentation
- Add just to development environment description

Author: tony

AGENTS.md

@@ -26,6 +26,7 @@ Key features:
 
 This project uses:
 - Python 3.10+
+- [just](https://github.com/casey/just) for command running (see also https://just.systems/)
 - [uv](https://github.com/astral-sh/uv) for dependency management
 - [ruff](https://github.com/astral-sh/ruff) for linting and formatting
 - [mypy](https://github.com/python/mypy) for type checking
@@ -49,7 +50,7 @@ uv pip install --editable . -G dev
 
 ```bash
 # Run all tests
-make test
+just test
 # or directly with pytest
 uv run pytest
 
@@ -60,7 +61,7 @@ uv run pytest tests/test_doctest_docutils.py
 uv run pytest tests/test_doctest_docutils.py::test_function_name
 
 # Run tests with test watcher
-make start
+just start
 # or
 uv run ptw .
 
@@ -72,26 +73,26 @@ uv run ptw . --now --doctest-modules
 
 ```bash
 # Run ruff for linting
-make ruff
+just ruff
 # or directly
 uv run ruff check .
 
 # Format code with ruff
-make ruff_format
+just ruff-format
 # or directly
 uv run ruff format .
 
 # Run ruff linting with auto-fixes
 uv run ruff check . --fix --show-fixes
 
 # Run mypy for type checking
-make mypy
+just mypy
 # or directly
 uv run mypy src tests
 
 # Watch mode for linting (using entr)
-make watch_ruff
-make watch_mypy
+just watch-ruff
+just watch-mypy
 ```
 
 ### Development Workflow
@@ -108,13 +109,13 @@ Follow this workflow for code changes (see `.cursor/rules/dev-loop.mdc`):
 
 ```bash
 # Build documentation
-make build_docs
+just build-docs
 
 # Start documentation server with auto-reload
-make start_docs
+just start-docs
 
 # Update documentation CSS/JS
-make design_docs
+just design-docs
 ```
 
 ## Code Architecture