chore: Add changelog note about mechanism changes

Author: Lms24

CHANGELOG.md

@@ -2,6 +2,34 @@
 
 ## Unreleased
 
+### Important Changes
+
+- **ref: Add and Adjust error event `mechanism` values**
+
+  This release includes a variety of changes to how the `mechanism` field is set on errors captured automatically by the Sentry SDKs. The intention is to clearly mark which instrumentation captured an error. In addition, some instrumentations previously did not yet annotate the error as handled or unhandled which this series of PRs corrects as well
+  - ref(angular): Adjust ErrorHandler event mechanism ([#17608](https://github.com/getsentry/sentry-javascript/pull/17608))
+  - ref(astro): Adjust `mechanism` on error events captured by astro middleware ([#17613](https://github.com/getsentry/sentry-javascript/pull/17613))
+  - ref(aws-severless): Slightly adjust aws-serverless mechanism type ([#17614](https://github.com/getsentry/sentry-javascript/pull/17614))
+  - ref(bun): Adjust `mechanism` of errors captured in Bun.serve ([#17616](https://github.com/getsentry/sentry-javascript/pull/17616))
+  - ref(core): Adjust MCP server error event `mechanism` ([#17622](https://github.com/getsentry/sentry-javascript/pull/17622))
+  - ref(core): Simplify `linkedErrors` mechanism logic ([#17600](https://github.com/getsentry/sentry-javascript/pull/17600))
+  - ref(nextjs): Set more specific event `mechanism`s ([#17543](https://github.com/getsentry/sentry-javascript/pull/17543))
+  - ref(node-core): Add `mechanism` to cron instrumentations ([#17544](https://github.com/getsentry/sentry-javascript/pull/17544))
+  - ref(node-core): Add more specific `mechanism.type` to worker thread errors from `childProcessIntegration` ([#17578](https://github.com/getsentry/sentry-javascript/pull/17578))
+  - ref(node): Add mechanism to errors captured via connect and koa integrations ([#17579](https://github.com/getsentry/sentry-javascript/pull/17579))
+  - ref(nuxt): Add and adjust `mechanism.type` in error events ([#17599](https://github.com/getsentry/sentry-javascript/pull/17599))
+  - ref(react): Add mechanism to `reactErrorHandler` and adjust mechanism in `ErrorBoundary` ([#17602](https://github.com/getsentry/sentry-javascript/pull/17602))
+  - ref(remix): Adjust event mechanism of `captureRemixServerException` ([#17629](https://github.com/getsentry/sentry-javascript/pull/17629))
+  - ref(replay-internal): Add mechanism to error caught by `replayIntegration` in debug mode ([#17606](https://github.com/getsentry/sentry-javascript/pull/17606))
+  - ref(solid): Add `mechanism` to error captured by `withSentryErrorBoundary` ([#17607](https://github.com/getsentry/sentry-javascript/pull/17607))
+
+  Already released in `10.11.0`:
+  - ref(browser): Add more specific `mechanism.type` to errors captured by `httpClientIntegration` ([#17254](https://github.com/getsentry/sentry-javascript/pull/17254))
+  - ref(browser): Set more descriptive `mechanism.type` in `browserApiErrorsIntergation` ([#17251](https://github.com/getsentry/sentry-javascript/pull/17251))
+  - ref(core): Add `mechanism.type` to `trpcMiddleware` errors ([#17287](https://github.com/getsentry/sentry-javascript/pull/17287))
+  - ref(core): Add more specific event `mechanism`s and span origins to `openAiIntegration` ([#17288](https://github.com/getsentry/sentry-javascript/pull/17288))
+  - ref(nestjs): Add `mechanism` to captured errors ([#17312](https://github.com/getsentry/sentry-javascript/pull/17312))
+
 - "You miss 100 percent of the chances you don't take. — Wayne Gretzky" — Michael Scott
 
 ### Important Changes