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

pkgs/opencode-desktop/default.nix

@@ -31,7 +31,7 @@
   # Upstream is missing outputHashes for git dependencies
   # Also fix stale npm deps hash in upstream node_modules FOD
   fixedNodeModules = opencode.node_modules.overrideAttrs {
-    outputHash = "sha256-LRhPPrOKCGUSCEWTpAxPdWKTKVNkg82WrvD25cP3jts=";
+    outputHash = "sha256-285KZ7rZLRoc6XqCZRHc25NE+mmpGh/BVeMpv8aPQtQ=";
   };
 
   opencode-desktop = rustPlatform.buildRustPackage (finalAttrs: {