fix: remove **/packages/** from DEFAULT_EXCLUDE

Monorepos commonly use packages/ as workspace root containing
primary source code. Excluding it by default breaks indexing
for JS/TS monorepos (pnpm, npm workspaces, etc.).

Fixes #4

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: CSCSoftware

src/commands/init.ts

@@ -53,7 +53,6 @@ export interface InitResult {
 export const DEFAULT_EXCLUDE = [
     // Package managers
     '**/node_modules/**',
-    '**/packages/**',
     '**/vendor/**',          // PHP Composer, Go
     '**/vendor/bundle/**',   // Ruby Bundler
     // Build output