feat: add Makefile with pnpm integration and systemd daemon management

- Use pnpm for all build, dev, test, and quality check commands
- Replace manual PID file handling with systemd service control
- Add daemon-start, daemon-stop, daemon-restart, daemon-status, daemon-logs targets
- Add enable/disable targets for boot startup management
- Provide convenience aliases (stop, restart, status, logs) for common operations
- Integrate with existing flynn.service systemd user service

Makefile

@@ -0,0 +1,86 @@
+# Flynn Makefile
+# Self-hosted personal AI agent
+
+.PHONY: build dev start stop restart status logs tui tui-fs tui-dev test test-run lint typecheck help daemon-start daemon-stop daemon-restart daemon-status daemon-logs enable disable
+
+# Default target
+.DEFAULT_GOAL := help
+
+# Build and development
+build: ## Compile TypeScript to dist/
+	pnpm build
+
+dev: ## Run daemon with watch mode
+	pnpm dev
+
+start: ## Start production build (foreground)
+	node dist/cli/index.js start
+
+# Systemd daemon management
+daemon-start: ## Start the systemd service
+	systemctl --user start flynn.service
+	@echo "Flynn daemon started"
+
+daemon-stop: ## Stop the systemd service
+	systemctl --user stop flynn.service
+	@echo "Flynn daemon stopped"
+
+daemon-restart: ## Restart the systemd service
+	systemctl --user restart flynn.service
+	@echo "Flynn daemon restarted"
+
+daemon-status: ## Check systemd service status
+	systemctl --user status flynn.service
+
+daemon-logs: ## Show systemd service logs
+	journalctl --user -u flynn.service -f
+
+enable: ## Enable Flynn to start on boot
+	systemctl --user enable flynn.service
+	@echo "Flynn enabled to start on boot"
+
+disable: ## Disable Flynn from starting on boot
+	systemctl --user disable flynn.service
+	@echo "Flynn disabled from starting on boot"
+
+# Aliases for convenience
+stop: daemon-stop ## Alias for daemon-stop
+restart: daemon-restart ## Alias for daemon-restart
+status: daemon-status ## Alias for daemon-status
+logs: daemon-logs ## Alias for daemon-logs
+
+# TUI commands
+tui: ## Run TUI in minimal mode (readline)
+	pnpm tui
+
+tui-fs: ## Run TUI in fullscreen mode (React/Ink)
+	pnpm tui:fs
+
+tui-dev: ## Run TUI with watch mode
+	pnpm tui:dev
+
+# Testing
+test: ## Run tests in watch mode
+	pnpm test
+
+test-run: ## Run tests once (no watch)
+	pnpm test:run
+
+# Quality checks
+lint: ## Run ESLint
+	pnpm lint
+
+typecheck: ## Run TypeScript compiler (no emit)
+	pnpm typecheck
+
+check: lint typecheck test-run ## Run all checks (lint, typecheck, test)
+
+# Dependencies
+install: ## Install dependencies
+	pnpm install
+
+# Utilities
+help: ## Show this help message
+	@echo "Flynn - Self-hosted personal AI agent"
+	@echo ""
+	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "  \033[36m%-15s\033[0m %s\n", $$1, $$2}'