chore: update .gitignore, remove tracked .pi-lens files, and sync pending changes

- Add .cache to .gitignore
- Remove .pi-lens/ from git tracking (already ignored)
- Update pi-agent-runner, pi-agent-wrapper modules
- Update claude-code agent module
- Update overlays, opencode-desktop package, and tests

.gitignore

@@ -43,3 +43,5 @@ flake.lock.bak
 .sidecar-start.sh
 .sidecar-base
 .td-root
+.pi-lens
+.cache