Implemented the next missing parity slice around informational slash commands.

Adds 15 commands ported from npm src/commands/: /output-style,
/release-notes, /feedback (alias /bug), /upgrade, /stickers,
/mobile (aliases /ios, /android), /desktop (alias /app),
/install-github-app, /install-slack-app, /privacy-settings,
/extra-usage, /passes, /rate-limit-options, /chrome, and
/reload-plugins. Browser launches honor CI / CLAUDE_CODE_NO_BROWSER
and fall back to a printed link when a browser is unavailable.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

tests/test_external_slash_commands.py

@@ -0,0 +1,145 @@
+"""Tests for the informational slash commands ported from the npm source.
+
+Covers /output-style, /release-notes, /feedback, /upgrade, /stickers, /mobile,
+/desktop, /install-github-app, /install-slack-app, /privacy-settings,
+/extra-usage, /passes, /rate-limit-options, /chrome, /reload-plugins.
+"""
+
+from __future__ import annotations
+
+import os
+import tempfile
+import unittest
+from pathlib import Path
+
+from src.agent_runtime import LocalCodingAgent
+from src.agent_types import AgentRuntimeConfig, ModelConfig
+
+
+def _make_agent(tmp_dir: str) -> LocalCodingAgent:
+    return LocalCodingAgent(
+        model_config=ModelConfig(model='test-model'),
+        runtime_config=AgentRuntimeConfig(cwd=Path(tmp_dir)),
+    )
+
+
+class ExternalSlashCommandsTest(unittest.TestCase):
+    """Each test runs with CLAUDE_CODE_NO_BROWSER=1 so no browser opens."""
+
+    def setUp(self) -> None:
+        os.environ['CLAUDE_CODE_NO_BROWSER'] = '1'
+
+    def tearDown(self) -> None:
+        os.environ.pop('CLAUDE_CODE_NO_BROWSER', None)
+
+    def _run(self, cmd: str) -> str:
+        with tempfile.TemporaryDirectory() as tmp:
+            agent = _make_agent(tmp)
+            return agent.run(cmd).final_output
+
+    def test_output_style_is_deprecated(self) -> None:
+        out = self._run('/output-style')
+        self.assertIn('deprecated', out.lower())
+        self.assertIn('/config', out)
+
+    def test_release_notes_falls_back_to_link(self) -> None:
+        out = self._run('/release-notes')
+        self.assertIn('CHANGELOG.md', out)
+        self.assertIn('https://github.com/anthropics/claude-code', out)
+
+    def test_release_notes_reads_local_changelog(self) -> None:
+        with tempfile.TemporaryDirectory() as tmp:
+            (Path(tmp) / 'CHANGELOG.md').write_text(
+                '# Changelog\n\n## 1.2.3\n- did a thing\n\n## 1.2.2\n- old\n',
+                encoding='utf-8',
+            )
+            agent = _make_agent(tmp)
+            out = agent.run('/release-notes').final_output
+        self.assertIn('1.2.3', out)
+        self.assertIn('did a thing', out)
+        self.assertNotIn('1.2.2', out)
+
+    def test_feedback_returns_link(self) -> None:
+        out = self._run('/feedback')
+        self.assertIn('https://github.com/anthropics/claude-code/issues', out)
+
+    def test_bug_aliases_to_feedback(self) -> None:
+        out = self._run('/bug')
+        self.assertIn('https://github.com/anthropics/claude-code/issues', out)
+
+    def test_feedback_includes_user_note(self) -> None:
+        out = self._run('/feedback the wrap selector keeps eating my prompt')
+        self.assertIn('Draft note', out)
+        self.assertIn('wrap selector', out)
+
+    def test_upgrade_returns_link(self) -> None:
+        out = self._run('/upgrade')
+        self.assertIn('https://claude.ai/upgrade/max', out)
+
+    def test_stickers_returns_link(self) -> None:
+        out = self._run('/stickers')
+        self.assertIn('stickermule.com/claudecode', out)
+
+    def test_mobile_lists_both_stores(self) -> None:
+        out = self._run('/mobile')
+        self.assertIn('apps.apple.com', out)
+        self.assertIn('play.google.com', out)
+
+    def test_ios_alias(self) -> None:
+        out = self._run('/ios')
+        self.assertIn('apps.apple.com', out)
+
+    def test_android_alias(self) -> None:
+        out = self._run('/android')
+        self.assertIn('play.google.com', out)
+
+    def test_desktop_returns_link(self) -> None:
+        out = self._run('/desktop')
+        self.assertIn('claude.ai/download', out)
+
+    def test_app_aliases_to_desktop(self) -> None:
+        out = self._run('/app')
+        self.assertIn('claude.ai/download', out)
+
+    def test_install_github_app(self) -> None:
+        out = self._run('/install-github-app')
+        self.assertIn('github.com/apps/claude', out)
+
+    def test_install_slack_app(self) -> None:
+        out = self._run('/install-slack-app')
+        self.assertIn('slack.com/marketplace/A08SF47R6P4-claude', out)
+
+    def test_privacy_settings(self) -> None:
+        out = self._run('/privacy-settings')
+        self.assertIn('claude.ai/settings/data-privacy-controls', out)
+
+    def test_extra_usage_points_to_upgrade(self) -> None:
+        out = self._run('/extra-usage')
+        self.assertIn('claude.ai/upgrade/max', out)
+        self.assertIn('/login', out)
+
+    def test_passes_mentions_claude_ai(self) -> None:
+        out = self._run('/passes')
+        self.assertIn('claude.ai', out.lower())
+        self.assertIn('passes', out.lower())
+
+    def test_rate_limit_options_lists_actions(self) -> None:
+        out = self._run('/rate-limit-options')
+        self.assertIn('/upgrade', out)
+        self.assertIn('/extra-usage', out)
+        self.assertIn('/login', out)
+
+    def test_chrome_returns_link(self) -> None:
+        out = self._run('/chrome')
+        self.assertIn('claude.ai/chrome', out)
+
+    def test_reload_plugins_reports_counts(self) -> None:
+        out = self._run('/reload-plugins')
+        self.assertIn('Reloaded plugins', out)
+        self.assertIn('plugin(s)', out)
+        self.assertIn('tool(s)', out)
+        self.assertIn('hook(s)', out)
+
+
+if __name__ == '__main__':
+    unittest.main()