Docs – v4 GA updates (#2298)

* Adds new features table to top of v4 upgrade guide

* Adds wait idempotency to wait-until, wait-for, and wait-for-token pages

* Adds new priority docs page and updates the v4 upgrade guide

* Adds new task lifecycle hooks

* Removes the message about requiring tasks to be exported

* Adds new global lifecycle hooks section

* Moves sections from upgrade guide into the table

* Adds hidden task page

* Improves the global lifecycle hooks section

* Updates middleware and locals section

* Adds new useWaitToken page to the react hooks section

* Adds a new ai.tool section

* Moves Docker (legacy) page into self-hosting section

* Removes known issues from v4 upgrade guide

* Replace “toolTask” with “ai.tool” in the Streams page example

* Renames guide to “Migrating from v3” and adds redirect

* Remove references to v4

* Removes changelog from migration guide

* The installation guide now references `@latest update`

* Changes all references from `/sdk/v3` to `/sdk`

* Updates @v4-beta to @latest

* Fixed broken link

* Fixes broken link

* Adds an upgrade to v4 using AI section

* Fixes 2 broken links

* Adds an entry for targetting preview branches

* Updates the run statuses

* Adds boolean helpers section to the runs and realtime pages

* Updates the concurrency page

* Updates the test page to include the new options

* Adds SDK and curl options for the preview branch targeting

* Updates new bulk actions page

* Remove the releasing concurrency section

* Got rid of some more @v4-beta mentions

* Improved rate limit docs

* Improved migrating docs

* Removed commented sections of the docs

* useWaitToken hook

* Fixed the description

* Fix for missing test image

---------

Co-authored-by: Matt Aitken <matt@mattaitken.com>
Co-authored-by: Dan <8297864+D-K-P@users.noreply.github.com>

docs/guides/python/python-image-processing.mdx

@@ -42,7 +42,7 @@ After you've initialized your project with Trigger.dev, add these build settings
 
 ```ts trigger.config.ts
 import { pythonExtension } from "@trigger.dev/python/extension";
-import { defineConfig } from "@trigger.dev/sdk/v3";
+import { defineConfig } from "@trigger.dev/sdk";
 
 export default defineConfig({
   runtime: "node",
@@ -73,7 +73,7 @@ export default defineConfig({
 This task uses the `python.runScript` method to run the `image-processing.py` script with the given image URL as an argument. You can adjust the image processing parameters in the payload, with options such as height, width, quality, output format, etc.
 
 ```ts src/trigger/processImage.ts
-import { schemaTask } from "@trigger.dev/sdk/v3";
+import { schemaTask } from "@trigger.dev/sdk";
 import { z } from "zod";
 import { python } from "@trigger.dev/python";
 import { promises as fs } from "fs";