feat: initial implementation

Asyncio IRC bot with decorator-based plugin system.
Zero external dependencies, Python 3.11+.

- IRC protocol: message parsing, formatting, async TCP/TLS connection
- Plugin system: @command and @event decorators, file-based loading
- Bot orchestrator: connect, dispatch, reconnect, nick recovery
- CLI: argparse entry point with TOML config
- Built-in plugins: ping, help, version, echo
- 28 unit tests for parser and plugin system

Makefile

@@ -0,0 +1,39 @@
+.PHONY: install dev test lint clean help
+
+VENV := .venv
+PIP := $(VENV)/bin/pip
+PYTHON := $(VENV)/bin/python
+PYTEST := $(VENV)/bin/pytest
+RUFF := $(VENV)/bin/ruff
+
+help: ## Show this help
+	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | \
+		awk 'BEGIN {FS = ":.*?## "}; {printf "  \033[38;5;110m%-12s\033[0m %s\n", $$1, $$2}'
+
+venv: ## Create virtual environment
+	python3 -m venv $(VENV)
+	$(PIP) install --upgrade pip
+
+install: venv ## Install package (editable)
+	$(PIP) install -e .
+	$(PIP) install pytest ruff
+
+test: ## Run tests
+	$(PYTEST) -v
+
+lint: ## Run linter
+	$(RUFF) check src/ tests/ plugins/
+
+fmt: ## Format code
+	$(RUFF) format src/ tests/ plugins/
+
+run: ## Run the bot
+	$(PYTHON) -m derp
+
+clean: ## Remove build artifacts
+	rm -rf build/ dist/ *.egg-info src/*.egg-info
+	find . -type d -name __pycache__ -exec rm -rf {} + 2>/dev/null || true
+
+link: install ## Symlink to ~/.local/bin
+	ln -sf $$(pwd)/$(VENV)/bin/derp ~/.local/bin/derp
+	@echo "Installed: $$(which derp)"