feat: add /verify skill for lint, build, and test validation

.claude/skills/verify/skill.md

@@ -0,0 +1,36 @@
+---
+name: verify
+description: Run lint and tests to verify changes. Use when user says /verify, check my changes, validate changes, run checks, verify everything passes, pre-commit check, ready to commit, does it pass, CI check, sanity check
+---
+
+# Verify Skill - mParticle Web SDK
+
+Run the full lint and test battery to verify the current state of the codebase.
+
+## Steps
+
+1. Run lint first:
+
+```bash
+npm run lint
+```
+
+2. If lint passes, run both test suites in parallel. Each suite handles its own build internally.
+
+```bash
+npm run test:jest
+```
+
+```bash
+npm run test
+```
+
+3. Report results in this format:
+
+| Check       | Status |
+|-------------|--------|
+| Lint        | PASS / FAIL |
+| Jest Tests  | PASS / FAIL |
+| Karma Tests | PASS / FAIL |
+
+4. If any check fails, show the relevant error output so the user can diagnose and fix the issue.

AGENTS.md

@@ -539,6 +539,10 @@ Core modules receive `mpInstance` as a parameter, allowing them to access other
 4. **Inspect Storage**: Check Application tab for LocalStorage/Cookies
 5. **Use Source Maps**: Dev builds include source maps
 
+### Available Skills
+
+- **`/verify`**: Run lint, build, and Jest tests to validate your changes before committing. Use this after making code changes to ensure nothing is broken. See `.claude/skills/verify/skill.md`.
+
 ### Additional Resources
 
 - **Documentation**: https://docs.mparticle.com/developers/sdk/web/

package.json

@@ -65,7 +65,7 @@
         "test:karma:rollup:cjs": "cross-env BUNDLER=rollup karma start test/integrations/cjs/karma.rollup.config.js",
         "test:karma:webpack:module": "cross-env BUNDLER=webpack karma start test/integrations/module/karma.webpack.config.js",
         "test:karma:rollup:module": "cross-env BUNDLER=rollup karma start test/integrations/module/karma.rollup.config.js",
-        "test:jest": "npm run build && jest --config jest.config.js",
+        "test:jest": "jest --config jest.config.js",
         "test:jest:watch": "jest --config jest.config.js --watch",
         "watch": "cross-env ENVIRONMENT=dev BUILD=iife rollup --config rollup.config.js -w",
         "watch:all": "cross-env ENVIRONMENT=prod BUILDALL=true rollup --config rollup.config.js -w",