feat(scripts): add unified startup scripts for full stack development

Add comprehensive startup scripts for managing all ZCLAW services:

Windows (PowerShell):
- start.ps1 / start-all.ps1 - Unified service launcher
- Supports -NoBrowser, -NoGateway, -Dev, -Stop flags

Unix (Bash):
- start.sh - Cross-platform launcher for macOS/Linux

Makefile:
- make start / make start-unix
- make desktop / make desktop-build
- make setup / make test / make clean

pnpm commands:
- pnpm start - Start all services
- pnpm start:dev - Development mode with hot reload
- pnpm start:no-browser - Skip ChromeDriver
- pnpm start:no-gateway - Skip OpenFang gateway
- pnpm desktop - Start Tauri only
- pnpm chromedriver - Start ChromeDriver only

Services managed:
1. ChromeDriver (port 4444) - Browser automation
2. OpenFang Gateway (port 4200) - AI Agent runtime
3. Tauri Desktop - React + Rust frontend

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Makefile

@@ -0,0 +1,79 @@
+# ZCLAW Makefile
+# Cross-platform task runner
+
+.PHONY: help start start-dev start-no-browser start-no-gateway desktop desktop-build setup test clean
+
+help: ## Show this help message
+	@echo "ZCLAW - OpenFang Desktop Client"
+	@echo ""
+	@echo "Usage: make [target]"
+	@echo ""
+	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "  \033[36m%-18s\033[0m %s\n", $$1, $$2}'
+
+# === Startup Commands ===
+
+start: ## Start all services (Windows: PowerShell)
+	@pwsh -File ./start.ps1
+
+start-dev: ## Start all services in dev mode
+	@pwsh -File ./start.ps1 -Dev
+
+start-no-browser: ## Start without ChromeDriver
+	@pwsh -File ./start.ps1 -NoBrowser
+
+start-no-gateway: ## Start without OpenFang gateway
+	@pwsh -File ./start.ps1 -NoGateway
+
+start-unix: ## Start all services (Unix: macOS/Linux)
+	@chmod +x ./start.sh && ./start.sh
+
+start-unix-dev: ## Start all services in dev mode (Unix)
+	@chmod +x ./start.sh && ./start.sh --dev
+
+# === Desktop App ===
+
+desktop: ## Start Tauri desktop app in dev mode
+	@cd desktop && pnpm tauri dev
+
+desktop-build: ## Build Tauri desktop app
+	@cd desktop && pnpm build && pnpm tauri build
+
+# === Development ===
+
+setup: ## Run first-time setup
+	@tsx scripts/setup.ts
+
+test: ## Run all tests
+	@pnpm test
+
+test-desktop: ## Run desktop tests
+	@cd desktop && pnpm test
+
+typecheck: ## Run TypeScript type check
+	@cd desktop && pnpm typecheck
+
+# === Services ===
+
+gateway: ## Start OpenFang gateway
+	@openfang gateway start
+
+gateway-status: ## Check gateway status
+	@openfang gateway status
+
+chromedriver: ## Start ChromeDriver on port 4444
+	@chromedriver --port=4444
+
+# === Cleanup ===
+
+clean: ## Clean build artifacts
+	@rm -rf dist/
+	@rm -rf desktop/dist/
+	@rm -rf desktop/src-tauri/target/
+	@rm -rf node_modules/
+	@rm -rf desktop/node_modules/
+	@echo "Cleaned build artifacts"
+
+clean-deep: clean ## Deep clean (including pnpm cache)
+	@rm -rf desktop/pnpm-lock.yaml
+	@rm -rf pnpm-lock.yaml
+	@echo "Deep clean complete. Run 'pnpm install' to reinstall."