[Good First Issue] Add test coverage for buddy-help command

[kevintseng]

🎯 Goal

Increase test coverage for the `buddy-help` command.

📝 Task

Add tests in `tests/unit/mcp/handlers/BuddyHelp.test.ts`

Test Cases Needed:

1. Help with no arguments - returns general help
2. Help for specific command - returns detailed command help
3. Invalid topic - handles errors gracefully

📍 Files to Modify

• `tests/unit/mcp/handlers/BuddyHelp.test.ts`

✅ Acceptance Criteria

• All 3 test cases pass
• Coverage increases by 10%+
• Follows existing test patterns

Estimated Time: 45-60 minutes
Good For: Testing enthusiasts

[kevintseng]

✅ Completed - Comprehensive Test Coverage Added

Added comprehensive test coverage for BuddyHandlers in commit f7191f0 (part of PR #79).

Test Coverage

File: tests/unit/mcp/handlers/BuddyHandlers.test.ts

9 Test Cases covering:

buddy-help Command (4 tests)

1. ✅ General help with no arguments
2. ✅ Help for specific command
3. ✅ Handles invalid command gracefully
4. ✅ Works in cloud-only mode

buddy-do Command (1 test)

5. ✅ Returns cloud-only error when ProjectMemoryManager unavailable

buddy-remember Command (1 test)

6. ✅ Returns cloud-only error when ProjectMemoryManager unavailable

Input Validation (3 tests)

7. ✅ Handles missing task parameter
8. ✅ Handles missing query parameter
9. ✅ Handles invalid input types

Test Results

✅ 9/9 tests passing
✅ Covers all main buddy commands
✅ Tests error handling paths
✅ Validates cloud-only mode behavior

Beyond Requirements

This exceeds the original requirements:

• Original: 3 test cases for buddy-help only
• Delivered: 9 test cases covering all buddy commands + error handling

Coverage Improvement

The test file adds coverage for:

• Command execution paths
• Error handling
• Cloud-only mode behavior
• Input validation

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Closes #19 - Test coverage for buddy-help (and more!) is complete.