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Gordon Lam fc1307418e Update Copilot guidance and PR prompt workflow (This PR summary and commit are generated accordingly) (#42634 )

## Summary of the Pull Request
- Added new Copilot agent prompts in
`.github/prompts/create-commit-title.prompt.md`,
`.github/prompts/create-pr.prompt.md`, and
`.github/prompts/fix-spelling.prompt.md` to streamline contributor
workflows.
- Refreshed `.github/copilot-instructions.md` with front matter and
clarified build/test guidance.
And added a new section titled `Language Style Rules` to help reduce
style issues in auto-generated code.

## Screenshot
a. For the new prompts, in VSCode, just type "/" and its name
<img width="477" height="124" alt="image"
src="https://github.com/user-attachments/assets/37c7330d-6fdc-45b4-9030-95920920c964"
/>
<img width="446" height="105" alt="image"
src="https://github.com/user-attachments/assets/55d3bb49-46cc-4441-9fb5-fed3a22983d9"
/>
b. All the spelling check problem, PR description, Commit title, are
generated and fixed by above prompts as demonstration (Except this
section)

## PR Checklist
- [x] **Communication:** I've discussed this with core contributors
already. If the work hasn't been agreed, this work might be rejected
- [x] **Tests:** N/A on doc updates.
- [x] **Documentation updated:** If checked, please file a pull request
on [our docs
repo](https://github.com/MicrosoftDocs/windows-uwp/tree/docs/hub/powertoys)
and link it here: #xxx (N/A)

## Detailed Description of the Pull Request / Additional comments
- Introduced prompt definitions so local tooling can generate commit
titles, PR descriptions, and resolve spell-check alerts using consistent
instructions.
- Added GitHub CLI prerequisites inside
`.github/prompts/fix-spelling.prompt.md` to ensure `gh` commands succeed
for new contributors.
- Converted `.github/copilot-instructions.md` to YAML-front-matter
format while aligning headings and terminology with current contributor
guidance.

## Validation Steps Performed
- No automated tests were run; changes are documentation and
configuration only.

2025-10-21 16:05:16 +08:00

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description, applyTo

description	applyTo
PowerToys AI contributor guidance.	pullRequests

PowerToys - Copilot guide (concise)

This is the top-level guide for AI changes. Keep edits small, follow existing patterns, and cite exact paths in PRs.

Repo map (1-line per area)

Core apps: src/runner/** (tray/loader), src/settings-ui/** (Settings app)
Shared libs: src/common/**
Modules: src/modules/* (one per utility; Command Palette in src/modules/cmdpal/**)
Build tools/docs: tools/**, doc/devdocs/**

Build and test (defaults)

Prerequisites: Visual Studio 2022 17.4+, minimal Windows 10 1803+.
Build discipline:
- One terminal per operation (build -> test). Do not switch or open new ones mid-flow.
- After making changes, cd to the project folder that changed (.csproj/.vcxproj).
- Use scripts to build, synchronously block and wait in foreground for completion: tools/build/build.ps1|.cmd (current folder), build-essentials.* (once per brand new build for missing nuget packages).
- Treat build exit code 0 as success; any non-zero exit code is a failure. Read the errors log in the build folder (such as build.*.*.errors.log) and surface problems.
- Do not start tests or launch Runner until the previous step succeeded.
Tests (fast and targeted):
- Find the test project by product code prefix (for example FancyZones, AdvancedPaste). Look for a sibling folder or one to two levels up named like <Product>*UnitTests or <Product>*UITests.
- Build the test project, wait for exit, then run only those tests via VS Test Explorer or vstest.console.exe with filters. Avoid dotnet test in this repo.
- Add or adjust tests when changing behavior; if skipped, state why (for example comment-only or string rename).

Pull requests (expectations)

Atomic: one logical change; no drive-by refactors.
Describe: problem, approach, risk, test evidence.
List: touched paths if not obvious.

When to ask for clarification

Ambiguous spec after scanning relevant docs (see below).
Cross-module impact (shared enum or struct) not clear.
Security, elevation, or installer changes.

Logging (use existing stacks)

C++ logging lives in src/common/logger/** (Logger::info, Logger::warn, Logger::error, Logger::debug). Keep hot paths quiet (hooks, tight loops).
C# logging goes through ManagedCommon.Logger (LogInfo, LogWarning, LogError, LogDebug, LogTrace). Some UIs use injected ILogger via LoggerInstance.Logger.

Docs to consult

tools/build/BUILD-GUIDELINES.md
doc/devdocs/core/architecture.md
doc/devdocs/core/runner.md
doc/devdocs/core/settings/readme.md
doc/devdocs/modules/readme.md

Language style rules

Always enforce repo analyzers: root .editorconfig plus any stylecop.json.
C# code follows StyleCop.Analyzers and Microsoft.CodeAnalysis.NetAnalyzers.
C++ code honors .clang-format plus .clang-tidy (modernize/cppcoreguidelines/readability).
Markdown files wrap at 80 characters and use ATX headers with fenced code blocks that include language tags.
YAML files indent two spaces and add comments for complex settings while keeping keys clear.
PowerShell scripts use Verb-Noun names and prefer single-quoted literals while documenting parameters and satisfying PSScriptAnalyzer.

Done checklist (self review before finishing)

Build clean? Tests updated or passed? No unintended formatting? Any new dependency? Documented skips?

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