docs: release notes for the v21.2.10 release

Author: clydin

CHANGELOG.md

@@ -1,3 +1,15 @@
+<a name="21.2.10"></a>
+
+# 21.2.10 (2026-05-06)
+
+### @angular/cli
+
+| Commit                                                                                              | Type | Description                                                             |
+| --------------------------------------------------------------------------------------------------- | ---- | ----------------------------------------------------------------------- |
+| [bb8611913](https://github.com/angular/angular-cli/commit/bb861191328fc2d25bd5ee99b0c8edc5e49d3a7d) | fix  | restrict MCP workspace access to allowed client roots during resolution |
+
+<!-- CHANGELOG SPLIT MARKER -->
+
 <a name="19.2.25"></a>
 
 # 19.2.25 (2026-04-30)
@@ -3111,7 +3123,6 @@
 - Protractor is no longer supported.
 
   Protractor was marked end-of-life in August 2023 (see https://protractortest.org/). Projects still relying on Protractor should consider migrating to another E2E testing framework, several support solid migration paths from Protractor.
-
   - https://angular.dev/tools/cli/end-to-end
   - https://blog.angular.dev/the-state-of-end-to-end-testing-with-angular-d175f751cb9c
 
@@ -6746,7 +6757,6 @@ Alan Agius, Charles Lyding and Doug Parker
 ### @angular/cli
 
 - Several changes to the `ng analytics` command syntax.
-
   - `ng analytics project <setting>` has been replaced with `ng analytics <setting>`
   - `ng analytics <setting>` has been replaced with `ng analytics <setting> --global`
 
@@ -6776,7 +6786,6 @@ Alan Agius, Charles Lyding and Doug Parker
 - `browser` and `karma` builders `script` and `styles` options input files extensions are now validated.
 
   Valid extensions for `scripts` are:
-
   - `.js`
   - `.cjs`
   - `.mjs`
@@ -6785,7 +6794,6 @@ Alan Agius, Charles Lyding and Doug Parker
   - `.mjsx`
 
   Valid extensions for `styles` are:
-
   - `.css`
   - `.less`
   - `.sass`