chore: update CLI linking instructions and add dev script to package.json

Author: pnftrading

docs/README-VI.md

@@ -31,8 +31,8 @@ pnpm install
 # Build tất cả packages
 pnpm -r build
 
-# Link CLI toàn cục
-cd packages/cli && npm link
+# Link CLI toàn cục (dành cho phát triển)
+cd packages/cli && pnpm link --global
 ```
 
 ---

docs/README.md

@@ -31,8 +31,8 @@ pnpm install
 # Build all packages
 pnpm -r build
 
-# Link CLI globally
-cd packages/cli && npm link
+# Link CLI globally (for development)
+cd packages/cli && pnpm link --global
 ```
 
 ---

package.json

@@ -5,6 +5,7 @@
   "description": "Vectorless, reasoning-based code index for AI context retrieval",
   "scripts": {
     "build": "pnpm -r build",
+    "dev": "pnpm --filter @codeindex/cli dev",
     "test": "pnpm -r test",
     "lint": "pnpm -r lint",
     "clean": "pnpm -r clean",