feat: Add SVN commit support with GUI interface similar to Git commits

[ubuntutester202]

Related GitHub Issue

Closes: #6100

Roo Code Task Context (Optional)

Description

This PR implements comprehensive SVN (Subversion) support for Roo Code, allowing users to work with SVN repositories alongside existing Git functionality. The implementation includes:

Key Features Implemented:

• SVN Repository Detection: Automatic detection of .svn directories and integration with VS Code workspace
• SVN Commit Search: Search SVN commits by revision number or message content with XML parsing
• SVN Status Integration: Real-time working directory status and diff information via @svn-changes mention
• SVN Version References: Support for r123 and 123 format revision mentions with automatic commit info retrieval
• Debug Infrastructure: Dedicated SVN debug channel with comprehensive logging and user-friendly error handling
• Untracked Files Preview: Show first 3 untracked files with intelligent file type detection

Technical Implementation Details:

• Created src/utils/svn.ts with complete SVN command-line integration
• Added SvnLogger class for comprehensive debug logging with dedicated VS Code output channel
• Implemented SvnErrorHandler with user-friendly error messages and guided troubleshooting
• Added SVN message types to ExtensionMessage.ts for webview communication
• Integrated SVN detection into workspace initialization and mention processing
• Added comprehensive test suite with 18 test cases covering all functionality

Design Choices:

• Used child_process with promisify for reliable SVN command execution
• Implemented XML parsing for structured SVN log data
• Added graceful fallbacks when SVN is not available or installed
• Prioritized user experience with helpful error messages and installation guidance

Test Procedure

Automated Testing:

cd src && npm test svn.spec.ts

✅ All 18 SVN tests pass successfully

Manual Testing Steps:

1. SVN Repository Detection:

   • Open VS Code in an SVN working copy
   • Verify debugSvn command appears in Command Palette
   • Check SVN repository info is correctly detected

2. SVN Commit Search:

   • Use @svn-commits mention with revision number (e.g., @svn-commits 123)
   • Search with commit message text (e.g., @svn-commits "bug fix")
   • Verify results show revision, author, date, and message

3. SVN Status Integration:

   • Make changes to SVN working copy
   • Use @svn-changes mention
   • Verify current status and diff information appears

4. SVN Version References:

   • Reference revisions like r123 or 123 in chat
   • Verify commit information is automatically retrieved and displayed

5. Debug Functionality:

   • Run debugSvn command
   • Check "Roo Code - SVN Debug" output channel for comprehensive information
   • Test error scenarios (non-SVN directory, SVN not installed)

Testing Environment:

• Windows 10 with SVN command-line tools
• VS Code with multiple SVN working copies
• Both TortoiseSVN and command-line SVN installations tested

Pre-Submission Checklist

• Issue Linked: This PR is linked to an approved GitHub Issue (see "Related GitHub Issue" above).
• Scope: My changes are focused on the linked issue (one major feature/fix per PR).
• Self-Review: I have performed a thorough self-review of my code.
• Testing: New and/or updated tests have been added to cover my changes (18 comprehensive test cases).
• Documentation Impact: I have considered if my changes require documentation updates (see "Documentation Updates" section below).
• Contribution Guidelines: I have read and agree to the Contributor Guidelines.

Screenshots / Videos

Main User Interface Changes:

• New debugSvn command available in VS Code Command Palette
• "Roo Code - SVN Debug" output channel for comprehensive logging
• SVN commit and status information integrated into AI chat responses
• User-friendly error dialogs with installation and troubleshooting guidance

Documentation Updates

• No documentation updates are required.
• Yes, documentation updates are required.

Rationale: This feature integrates seamlessly with existing mention system (@svn-changes, @svn-commits) and follows established patterns. The debugSvn command is self-explanatory and appears in Command Palette. User-friendly error messages provide guidance when needed.

Additional Notes

Verification of All Acceptance Criteria:
✅ AC1: SVN Repository Detection & Basic Integration - Implemented with workspace detection
✅ AC2: SVN Commit Search & History - Full XML parsing with revision and message search
✅ AC3: SVN Status & Change Detection - Real-time status via @svn-changes mention
✅ AC4: Untracked Files Preview - Shows first 3 files with smart file detection
✅ AC5: SVN Version References & Mentions - Supports r123 and 123 formats
✅ AC6: Debug & Diagnostics - Comprehensive debugSvn command with dedicated output channel
✅ AC7: Error Handling - User-friendly messages with guided troubleshooting
✅ AC8: Test Coverage - 18 comprehensive test cases covering all functionality
✅ AC9: Integration Patterns - Follows existing mention and webview patterns
✅ AC10: Extension Activation - Proper workspace initialization and command registration

Performance Considerations:

• SVN commands are executed asynchronously to avoid blocking the UI
• Output truncation prevents excessive memory usage
• Graceful degradation when SVN is not available

Future Enhancements Ready:

• Foundation laid for additional SVN operations (commit, update, etc.)
• Extensible error handling system for new SVN scenarios
• Debug infrastructure ready for advanced troubleshooting

Get in Touch

Discord Username: [charmmy_51908]

---

Important

Adds SVN support with commit search, status integration, and debugging capabilities, alongside comprehensive error handling and logging.

• Behavior:
  • Adds SVN support with automatic .svn directory detection and integration into VS Code workspace.
  • Implements SVN commit search by revision or message in svn.ts.
  • Integrates SVN status and diff information with @svn-changes mention.
  • Supports r123 and 123 revision mentions for automatic commit info retrieval.
  • Adds debugSvn command for SVN debugging in registerCommands.ts.
• Error Handling:
  • Introduces SvnErrorHandler for user-friendly error messages and troubleshooting.
• Logging:
  • Adds SvnLogger for comprehensive SVN debug logging.
• Testing:
  • Adds 18 test cases in svn.spec.ts to cover SVN functionalities.
• UI Changes:
  • Updates ChatTextArea.tsx and ContextMenu.tsx to handle SVN mentions and display commit information.
• Misc:
  • Excludes .svn/ in excludes.ts and file-search.ts for file operations.

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[ellipsis-dev]

In getSvnCommitInfoForMentions, the revision string is only cleaned using replace(/^r/i, "") but not fully validated. It would be safer to ensure the revision contains only digits before interpolating into the shell command to avoid potential command injection.

Suggested change

	const cleanRevision = revision.replace(/^r/i, "")
	const cleanRevision = revision.replace(/^r/i, ""); if (!/^\d+$/.test(cleanRevision)) throw new Error("Invalid revision");

[ubuntutester202]

Hi! I've fixed the issue that caused CI to fail before:

• Fixed dependency environment problem, solved check types failure caused by version incompatibility
• My code implementation for the svn commits part is almost in a form that is convenient for developers to merge.
• Please review again, thank you!