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Adding custom debug chat mode for GitHub Copilot Agent mode development #2672
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| Original file line number | Diff line number | Diff line change | ||||
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| --- | ||||||
| description: 'Debug application to find and fix a bug' | ||||||
| model: GPT-5 (Preview) | ||||||
| tools: ['extensions', 'codebase', 'usages', 'vscodeAPI', 'problems', 'changes', 'testFailure', 'terminalSelection', 'terminalLastCommand', 'fetch', 'findTestFiles', 'searchResults', 'githubRepo', 'todos', 'runTests', 'runCommands', 'runTasks', 'editFiles', 'runNotebooks', 'search', 'new', 'Microsoft Docs', 'get_issue', 'get_issue_comments', 'get-library-docs', 'playwright', 'pylance mcp server'] | ||||||
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There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. [nitpick] The tools array contains inconsistent naming patterns. Some tools use camelCase ('vscodeAPI', 'testFailure'), some use snake_case ('get_issue', 'get_issue_comments'), and some use kebab-case ('get-library-docs'). Consider standardizing the naming convention for better maintainability.
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Copilot uses AI. Check for mistakes. Positive FeedbackNegative Feedback |
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| --- | ||||||
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| # Debug Mode Instructions | ||||||
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| You are in debug mode. Your primary objective is to systematically identify, analyze, and resolve bugs in the developer's application. Follow this structured debugging process: | ||||||
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| ## Debugging process | ||||||
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| • **Gather context**: Read error messages/stack traces, examine recent changes, identify expected vs actual behavior. If the issue is a GitHub issue link, use 'get_issue' and 'get_issue_comments' tools to fetch the issue and comments. | ||||||
| • **Root cause analysis**: Trace execution path, check for common issues, use search tools to understand component interactions | ||||||
| • **Targeted fix**: Make minimal changes addressing root cause, follow existing patterns, consider edge cases | ||||||
| • **Verify thoroughly**: Run tests to confirm fix, check for regressions, test edge cases | ||||||
| • **Document**: Summarize what was fixed, explain root cause, suggest preventive measures. Do not document this in the repo itself, only in the chat history and commit messages. | ||||||
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| ## Local server setup | ||||||
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| You MUST check task output readiness before debugging, testing, or declaring work complete. | ||||||
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| - Start the app: Run the "Development" compound task (which runs both frontend and backend tasks) | ||||||
| - Check readiness from task output (both must be ready): | ||||||
| - Frontend (task: "Frontend: npm run dev"): look for the Vite URL line. Either of these indicates ready: | ||||||
| - "Local: http://127.0.0.1:..." or "➜ Local: http://127.0.0.1:..." | ||||||
| - Backend (task: "Backend: quart run"): wait for Hypercorn to bind. Ready when you see: | ||||||
| - "INFO:hypercorn.error:Running on http://127.0.0.1:50505" (port may vary if changed) | ||||||
| - If either readiness line does not appear, the server is not ready. Investigate and fix errors shown in the corresponding task terminal before proceeding. | ||||||
| - Hot reload behavior: | ||||||
| - Frontend: Vite provides HMR; changes in the frontend are picked up automatically without restarting the task. | ||||||
| - Backend: Quart is started with --reload; Python changes trigger an automatic restart. | ||||||
| - If watchers seem stuck or output stops updating, stop the tasks and run the "Development" task again. | ||||||
| - To interact with the application, use the Playwright MCP server | ||||||
| - To run the Python backend pytest tests, use the "run tests" tool | ||||||
| - To run the Playwright E2E tests of the whole app (with a mocked backend), run `pytest tests/e2e.py --tracing=retain-on-failure`. | ||||||
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| Original file line number | Diff line number | Diff line change | ||||
|---|---|---|---|---|---|---|
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@@ -15,6 +15,74 @@ | |||||
| "cwd": "${workspaceFolder}/app" | ||||||
| }, | ||||||
| "problemMatcher": [] | ||||||
| }, | ||||||
| { | ||||||
| "label": "Development", | ||||||
| "dependsOn": [ | ||||||
| "Frontend: npm run dev", | ||||||
| "Backend: quart run" | ||||||
| ], | ||||||
| "group": { | ||||||
| "kind": "build", | ||||||
| "isDefault": true | ||||||
| } | ||||||
| }, | ||||||
| { | ||||||
| "label": "Frontend: npm run dev", | ||||||
| "type": "npm", | ||||||
| "script": "dev", | ||||||
| "isBackground": true, | ||||||
| "options": { | ||||||
| "cwd": "${workspaceFolder}/app/frontend" | ||||||
| }, | ||||||
| "presentation": { | ||||||
| "reveal": "always", | ||||||
| "group": "buildWatchers", | ||||||
| "panel": "dedicated", | ||||||
| "clear": false | ||||||
| }, | ||||||
| "problemMatcher": { | ||||||
| "pattern": { | ||||||
| "regexp": "" | ||||||
|
There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. [nitpick] Empty regex pattern in problemMatcher could be confusing. Consider adding a comment explaining why the pattern is empty or use a more explicit placeholder like ".*" to indicate it matches anything.
Suggested change
Copilot uses AI. Check for mistakes. Positive FeedbackNegative Feedback |
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| }, | ||||||
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| "background": { | ||||||
| "activeOnStart": true, | ||||||
| "beginsPattern": ".*VITE v.*", | ||||||
| "endsPattern": ".*(?:➜\\s*)?Local:\\s+https?://.*" | ||||||
| } | ||||||
| } | ||||||
| }, | ||||||
| { | ||||||
| "label": "Backend: quart run", | ||||||
| "type": "shell", | ||||||
| "command": "${workspaceFolder}/.venv/bin/python", | ||||||
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|
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| "windows": { | ||||||
| "command": "${workspaceFolder}\\.venv\\Scripts\\python.exe" | ||||||
| }, | ||||||
| "args": ["-m", "quart", "run", "--reload", "-p", "50505"], | ||||||
| "options": { | ||||||
| "cwd": "${workspaceFolder}/app/backend", | ||||||
| "env": { | ||||||
| "QUART_APP": "main:app", | ||||||
| "QUART_ENV": "development", | ||||||
| "QUART_DEBUG": "0", | ||||||
| "LOADING_MODE_FOR_AZD_ENV_VARS": "override" | ||||||
| } | ||||||
| }, | ||||||
| "isBackground": true, | ||||||
| "presentation": { | ||||||
| "reveal": "always", | ||||||
| "group": "buildWatchers", | ||||||
| "panel": "dedicated" | ||||||
| }, | ||||||
| "problemMatcher": { | ||||||
| "pattern": { "regexp": "" }, | ||||||
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There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. [nitpick] Empty regex pattern in problemMatcher could be confusing. Consider adding a comment explaining why the pattern is empty or use a more explicit placeholder like ".*" to indicate it matches anything.
Suggested change
Copilot uses AI. Check for mistakes. Positive FeedbackNegative Feedback |
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| "background": { | ||||||
| "activeOnStart": true, | ||||||
| "beginsPattern": ".*Serving Quart app.*", | ||||||
| "endsPattern": ".*hypercorn.*Running on http://.*" | ||||||
| } | ||||||
| } | ||||||
| } | ||||||
| ] | ||||||
| } | ||||||
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