Initial monorepo setup with npm workspaces and dual TypeScript configuration

- Set up npm workspaces for three packages: pi-tui, pi-agent, and pi (pods)
- Implemented dual TypeScript configuration:
  - Root tsconfig.json with path mappings for development and type checking
  - Package-specific tsconfig.build.json for clean production builds
- Configured lockstep versioning with sync script for inter-package dependencies
- Added comprehensive documentation for development and publishing workflows
- All packages at version 0.5.0 ready for npm publishing

tsconfig.base.json

@@ -0,0 +1,17 @@
+{
+	"compilerOptions": {
+		"target": "esnext",
+		"module": "esnext",
+		"lib": ["ES2022"],
+		"strict": true,
+		"esModuleInterop": true,
+		"skipLibCheck": true,
+		"forceConsistentCasingInFileNames": true,
+		"declaration": true,
+		"declarationMap": true,
+		"sourceMap": true,
+		"moduleResolution": "bundler",
+		"resolveJsonModule": true,
+		"types": ["node"]
+	}
+}