feat(claude/settings): enable agent teams and use local commands

Enable experimental agent teams support and switch to local commit
commands, disabling the official commit-commands plugin now that
equivalent commands exist in claude/commands/.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

claude/settings.json

@@ -93,10 +93,14 @@
     "command": "~/.claude/statusline.sh",
     "padding": 0
   },
+  "env": {
+    "CLAUDE_CODE_EXPERIMENTAL_AGENT_TEAMS": "1"
+  },
+  "teammateMode": "auto",
   "enabledPlugins": {
     "code-review@claude-plugins-official": true,
     "code-simplifier@claude-plugins-official": true,
-    "commit-commands@claude-plugins-official": true,
+    "commit-commands@claude-plugins-official": false,
     "feature-dev@claude-plugins-official": true,
     "frontend-design@claude-plugins-official": true,
     "gopls-lsp@claude-plugins-official": true,