refactor: revert .gitignore changes — scope to data-diff only

Author: suryaiyer95

.gitignore

@@ -28,12 +28,6 @@ target
 # Commit message scratch files
 .github/meta/
 
-# Local connections config (may contain credentials)
-.altimate-code/
-
-# Pre-built native binaries (platform-specific, not for source control)
-packages/opencode/*.node
-
 # Local dev files
 opencode-dev
 logs/