Add plan mode detection pattern for Claude Code

[eatnug]

Summary

• Add detection patterns for Claude Code's "Enter plan mode?" prompt
• Extension now properly transitions to 'waiting' status when plan mode dialog appears

Test plan

• Run Claude Code and trigger plan mode prompt
• Verify extension status changes to 'waiting'

🤖 Generated with Claude Code

[gemini-code-assist]

Summary of Changes

Hello @eatnug, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request enhances the extension's ability to accurately monitor and reflect the state of Claude Code. By introducing specific detection patterns for Claude Code's 'plan mode' prompts, the extension can now correctly identify when this mode is active and update its status accordingly, leading to a more responsive and intuitive user experience.

Highlights

• Claude Code Plan Mode Detection: Added new detection patterns to recognize when Claude Code enters its 'plan mode' prompt.
• Extension Status Transition: Ensured the extension properly transitions to a 'waiting' status when the 'plan mode' dialog appears in Claude Code.

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[gemini-code-assist]

Code Review

This pull request adds detection patterns for Claude Code's plan mode, which is a useful enhancement. The new regular expressions appear correct for identifying the plan mode prompt and menu option. My main feedback is to recommend adding unit tests for these new patterns to ensure they are covered and to prevent future regressions. This will improve the overall quality and maintainability of the code.

[gemini-code-assist]

These new patterns for detecting plan mode are a good addition. To ensure they work as expected and prevent future regressions, please add corresponding unit tests in src/test/domain/services/TerminalStatusDetector.test.ts.

For example:

        test('detects waiting status from plan mode prompt', () => {
            const output = 'Enter plan mode?';
            const status = detector.detect('claude', output);
            assert.strictEqual(status, 'waiting');
        });

        test('detects waiting status from plan mode menu option', () => {
            const output = '1. Yes, enter plan mode';
            const status = detector.detect('claude', output);
            assert.strictEqual(status, 'waiting');
        });