diff --git a/.github/copilot-instructions.md b/.github/copilot-instructions.md
new file mode 100644
index 0000000..1213d69
--- /dev/null
+++ b/.github/copilot-instructions.md
@@ -0,0 +1,31 @@
+# Copilot instructions for `nevware21/ts-debug`
+
+## Repository overview
+
+- This repository is a Rush monorepo.
+- The publishable packages are `dbg` (`@nevware21/ts-debug`) and `providers` (`@nevware21/ts-debug-providers`).
+- Root-level validation runs from the repository root with:
+  - `npm run lint`
+  - `npm run build`
+  - `npm run test`
+
+## Release checklist
+
+When preparing a release, always:
+
+1. Use a commit title in the exact format `[Release] Increase version to x.y.z`.
+2. Update every required package manifest:
+   - `package.json`
+   - `dbg/package.json`
+   - `providers/package.json`
+   - Keep `providers/package.json` aligned with the new `@nevware21/ts-debug` dependency version.
+3. Update `README.md` for any release-related version references, but keep the Quickstart install command unpinned so it always installs the latest package version.
+4. Update `CHANGELIST.md`:
+   - include only the significant changes for the new version
+   - add a full changelist link when one is available
+   - preserve any existing unreleased details as-is; do not remove them and do not reduce them into the new version summary
+
+## Release packaging notes
+
+- Root `npm run prep-release` runs `npm run cleanBuild` followed by `npm run npm-pack`.
+- Root `npm run npm-pack` copies `README.md` and `LICENSE` into both publishable packages and then runs Rush `npm-pack`.
diff --git a/README.md b/README.md
index 5c014f9..75b1a2c 100644
--- a/README.md
+++ b/README.md
@@ -34,7 +34,7 @@ See [Browser Support](#browser-support) for details on the supported browser env
 
 ## Quickstart
 
-Install the npm packare: `npm install @nevware21/ts-debug --save`
+Install the npm package: `npm install @nevware21/ts-debug --save`
 
 And then just import the helpers and use them.