update plugin settings and add testing section to AGENTS.md

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

.claude/settings.json

@@ -1,16 +1,15 @@
 {
+  "enabledMcpjsonServers": [
+    "next-devtools"
+  ],
   "enabledPlugins": {
     "frontend-design@claude-plugins-official": true,
     "feature-dev@claude-plugins-official": true,
     "commit-commands@claude-plugins-official": true,
     "pr-review-toolkit@claude-plugins-official": true,
-    "code-simplifier@claude-plugins-official": true,
     "typescript-lsp@claude-plugins-official": true,
     "claude-md-management@claude-plugins-official": true,
-    "claude-code-setup@claude-plugins-official": true
-  },
-  "enabledMcpjsonServers": [
-    "next-devtools"
-  ],
-  "outputStyle": "Explanatory"
+    "claude-code-setup@claude-plugins-official": true,
+    "skill-creator@claude-plugins-official": true
+  }
 }

AGENTS.md

@@ -1,5 +1,7 @@
 # AGENTS.md
 
+> **Monorepo note:** `web/` is a separate Next.js landing page with its own `AGENTS.md`. This file covers the Flutter app only.
+
 ## Workflow
 
 - In plan mode, interview thoroughly — ask about UI/UX, tradeoffs, and edge cases before coding
@@ -41,6 +43,13 @@ dart run build_runner build --delete-conflicting-outputs             # Same, but
 - Always include trailing commas
 - Use single quotes
 
+## Testing
+
+- `flutter test` runs all tests; `flutter test test/path/to/file.dart` for a single file
+- HTTP mocking: `http_mock_adapter` (`DioAdapter`) — use full URLs in `onGet`/`onPost`
+- General mocking: `mocktail` (no codegen required)
+- Fixtures live in `test/fixtures/` (e.g., `irc_messages.dart`, `api_responses.dart`)
+
 ## Commits
 
 Lowercase, no prefixes (e.g., `fix landscape bottom padding in chat bottom bar`). Keep commits tightly scoped.