chore: add scoped API key release notes

Author: carderne

.changeset/friendly-keys-batch-tokens.md

@@ -3,4 +3,4 @@
 "@trigger.dev/sdk": patch
 ---
 
-Allow task-scoped environment API keys to use batch operations for their permitted tasks.
+Allow task-scoped environment API keys to run batch operations for their permitted tasks. The SDK declares the batch's task set before creation, and `@trigger.dev/core/v3/apiKeys` now exports the additional-key format helper.

.server-changes/multi-task-scope-enforcement.md

@@ -0,0 +1,6 @@
+---
+area: webapp
+type: fix
+---
+
+Requests spanning multiple tasks now require permission for every requested task instead of accepting permission for only one task.

.server-changes/scoped-environment-api-key-auth.md

@@ -0,0 +1,6 @@
+---
+area: webapp
+type: feature
+---
+
+Additional environment API keys can authenticate API requests using their configured permissions, with revoked and expired keys rejected. Batch responses use server-issued public access tokens so additional keys never need the environment signing secret.