Implement CodeLens for TODO comments to improve action visibility

[Copilot]

Summary: Implement CodeLens for TODO Comments ✅

This PR successfully implements a CodeLens provider to make TODO comment actions more visible to users by displaying them directly above the code lines.

Implementation Checklist:

• Understand the current implementation (CodeActionProvider in IssueTodoProvider)
• Extend IssueTodoProvider to also implement CodeLensProvider interface
• Implement provideCodeLenses method to detect TODO comments and return CodeLens objects
• Register the CodeLens provider in issueFeatureRegistrar.ts
• Update tests to verify CodeLens functionality
• Refactor to extract common logic and reduce code duplication
• Update documentation to reflect the new feature
• Add setting to disable CodeLens (on by default)
• Remove d.ts file changes
• Address code review feedback
• Lint and validate all changes
• Code review completed successfully
• All checks pass

What Changed:

Before this PR:

• TODO actions only available via lightbulb quick fix menu
• Users had to hover or use keyboard shortcuts
• Poor discoverability

After this PR:

• Clickable actions appear directly above TODO comments
• "Create GitHub Issue" and "Delegate to coding agent" links visible inline
• One-click access to features
• New setting to disable CodeLens if preferred (enabled by default)
• Backward compatible - lightbulb still works

Recent Updates:

• Removed unused lineNumber parameter from findTodoInLine method
• Renamed cacheAndReturn to setCachedResult for better clarity

Files Changed:

1. src/issues/issueTodoProvider.ts

   • Implemented both CodeActionProvider and CodeLensProvider interfaces
   • Added provideCodeLenses method with setting check
   • Removed unused parameter from helper method

2. src/github/copilotRemoteAgent.ts

   • Improved function naming for caching logic

3. src/issues/issueFeatureRegistrar.ts

   • Registered CodeLens provider alongside CodeAction provider

4. src/common/settingKeys.ts

   • Added CREATE_ISSUE_TRIGGERS_SHOW_CODE_LENS constant

5. package.json

   • Added githubIssues.createIssueTriggersShowCodeLens boolean setting

6. package.nls.json

   • Added localized description for the new setting

7. src/test/issues/issueTodoProvider.test.ts

   • Added comprehensive test case for CodeLens functionality

8. documentation/IssueFeatures.md

   • Updated documentation to describe the new feature and setting

Quality Assurance:

✅ All existing tests pass
✅ ESLint: No warnings or errors
✅ Hygiene checks: Pass
✅ TypeScript compilation: Success
✅ Code review feedback addressed
✅ Setting properly integrated with VS Code configuration system
✅ Documentation updated

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Status: ✅ Ready for review and merge
Breaking Changes: None
Migration Required: None

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[joshspicer]

@copilot this works great. Add a setting (on by default) to disable these code lens

[joshspicer]

@copilot remove the d.ts file changes!

[Copilot]

@copilot this works great. Add a setting (on by default) to disable these code lens

Added the setting githubIssues.createIssueTriggersShowCodeLens (enabled by default). Users can disable CodeLens by setting it to false, and the quick fix actions will still be available via the lightbulb menu. (commit: TBD)

@copilot this works great. Add a setting (on by default) to disable these code lens

Added the setting githubIssues.createIssueTriggersShowCodeLens (enabled by default). Users can disable CodeLens by setting it to false, and the quick fix actions will still be available via the lightbulb menu. (commit: 4a30078)

[Copilot]

@copilot remove the d.ts file changes!

Removed the uncommitted d.ts file changes. The PR now only contains the intended changes for the CodeLens feature. The d.ts changes were already reverted in commit 761e28d, and I've cleaned up any additional uncommitted modifications.