Document baseURL normalization semantics for transport endpoints

Co-authored-by: Eric Allam <eric@trigger.dev>

Author: cursoragent

docs/tasks/streams.mdx

@@ -653,6 +653,9 @@ the failure is surfaced through `onError` with phase `reconnect`.
 Subsequent reconnect calls will retry stale inactive-state cleanup until it succeeds.
 If `onError` is omitted, reconnect still returns `null` and continues without callback reporting.
 
+`baseURL` supports optional path prefixes and trailing slashes; both trigger and stream URLs
+are normalized consistently.
+
 For richer TypeScript ergonomics in app code, `@trigger.dev/ai` also exports:
 
 - `TriggerChatHeadersInput`

packages/ai/CHANGELOG.md

@@ -19,3 +19,4 @@
 - Improved best-effort run-store cleanup to attempt both inactive-state writes and deletes even if one step fails.
 - Added reconnect cleanup error reporting for stale inactive state while still returning `null`.
 - Added retry semantics for stale inactive reconnect cleanup on subsequent reconnect attempts.
+- Added consistent baseURL normalization for trigger and stream endpoints (including path prefixes and trailing slashes).

packages/ai/README.md

@@ -155,6 +155,11 @@ both cleanup steps (`set` inactive state and `delete`) even if one of them fails
   without surfacing callback events.
 - Provide a custom `runStore` if you need state shared across processes/instances.
 
+## Base URL behavior
+
+- `baseURL` supports optional path prefixes (for example reverse-proxy mounts).
+- Trailing slashes are normalized automatically before trigger/stream requests.
+
 ## `ai.tool(...)` example
 
 ```ts