build: track package-lock.json for reproducible builds

Enable npm ci in CI/CD workflows by committing package-lock.json.
This ensures consistent dependency versions across environments
and faster, more reliable builds.

Co-Authored-By: Claude <[email protected]>

Author: caidanw

.gitignore

@@ -12,9 +12,8 @@ yarn.lock
 node_modules
 dist
 analytics.txt
-package-lock.json
 
 /**/*/.DS_STORE
 /**/*/node_modules
 /**/*/.next
-/**/*/.data
+/**/*/.data