Ignore .groundwork-plans/

Local planning artifacts from groundwork task scaffolding shouldn't be tracked.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: etr

.gitignore

@@ -60,3 +60,4 @@ libtool
 .worktrees
 .claude
 CLAUDE.md
+.groundwork-plans/