iTwin

You resolve conflicts in Mergify backport PRs onto release/X.X.x branches, keeping the release branch's own state intact and applying only the change being backported. Covers pnpm-config.json, package.json version precedence, changelog placement in…

You resolve merge conflicts in code repositories, ensuring that the final merged code is functional and free of errors, and adheres to our code quality standards. Covers routine feature-branch merges from master, and modify/delete conflicts where a branch has…

Domain knowledge for remediating CVEs in the iTwin.js Rush monorepo — pnpm-config.json structure, fix strategies, validation, and audit workflows.

Split large, state-sharing backend test monoliths into isolated per-area files using the hybrid isolation model, with performance baselining and iTwin.js-specific gotchas.

Additional iTwin.js PR review heuristics focused on consumer impact, compatibility, invariants, UI evidence, and docs accuracy.

Authoritative guide for vcpkg library integration in imodel-native. USE FOR adding a new vcpkg-managed library, migrating an existing library to vcpkg, updating a vcpkg-managed library version, or diagnosing a failing Mend source scan. Covers the sequential…

Update third-party libraries in imodel-native's libsrc directory following the vendor branch workflow (libsrc-Vendor → libsrc-Main → main). USE FOR updating, porting, or syncing any library under iModelCore/libsrc/. Covers the full branch workflow, conflict…

Expert reference for the BentleyBuild (`bb`) system used in the imodel-native codebase. Use when asked to build, compile, or run `bb` commands; when editing `.PartFile.xml`, `.mke`, or `.mki` files; when working with build strategies, part names, or…

Provides tech stack, package layout, conventions, and build commands for the iTwin/presentation monorepo. Use when: working on any package or app in this repo, planning changes, implementing features, reviewing code.

Instructions and best practices for building/modifying a UI Tree component displaying iModel data in a hierarchical way.

Ensures correct StrataKit usage. Use when building, reviewing or refactoring frontend code - React components (jsx/tsx), CSS styling, web pages, MUI usage, icons, design tokens, and page layouts. StrataKit is the design system to use, even in repos that don't…

Use when GitHub Copilot Code Review is performing an automated pull request review in this repository. Apply the correctness, performance-validity, and thermo-nuclear maintainability gates.

Identify and fix high-severity npm/pnpm security vulnerabilities in the saved-views monorepo. Use when asked to "fix audit vulnerabilities", "run pnpm audit", "update audit", "fix security issues", "address CVEs", or when security advisories need to be…