chore(gitignore): drop local worktree and scratch ignore patterns

Author: Zoo (VP)

.gitignore

@@ -59,14 +59,3 @@ qdrant_storage/
 plans/
 
 roo-cli-*.tar.gz*
-
-# Local worktrees (multi-branch development)
-.wt-*/
-
-# Temporary scratch files
-.tmp-*
-.zoo-status.txt
-untracked-*.txt
-class_*.txt
-check-dup2-result.txt
-*.tsbuildinfo