Add Queue Management API endpoints and SDK documentation (#3087)

Closes #<issue>

## ✅ Checklist

- [ ] I have followed every step in the [contributing
guide](https://github.com/triggerdotdev/trigger.dev/blob/main/CONTRIBUTING.md)
- [ ] The PR title follows the convention.
- [ ] I ran and tested the code works

---

## Testing

N/A - Documentation and OpenAPI schema updates only.

---

## Changelog

Added comprehensive Queue Management API support:

**OpenAPI Endpoints:**
- `GET /api/v1/queues` - List all queues with pagination support
- `GET /api/v1/queues/{queueParam}` - Retrieve a specific queue by ID,
task ID, or custom queue name
- `POST /api/v1/queues/{queueParam}/pause` - Pause or resume a queue
- `POST /api/v1/queues/{queueParam}/concurrency/override` - Override
queue concurrency limits
- `POST /api/v1/queues/{queueParam}/concurrency/reset` - Reset
concurrency limits to base values

**Schema Definitions:**
- `QueueObject` - Complete queue representation with concurrency details
- `ListQueuesResult` - Paginated queue listing response

**Documentation:**
- Updated `queue-concurrency.mdx` with SDK usage examples for queue
management
- Added 5 new management API documentation pages for each endpoint
- Updated `docs.json` navigation structure with new "Queues API" section

All endpoints support flexible queue identification (by ID, task ID, or
custom queue name) and include TypeScript code samples.

---

## Screenshots

N/A

💯

https://claude.ai/code/session_01LyrXwxHCbejvi34fykifPP

Co-authored-by: Claude <noreply@anthropic.com>

Author: matt-aitken

docs/docs.json

@@ -255,6 +255,16 @@
               "management/runs/update-metadata"
             ]
           },
+          {
+            "group": "Queues API",
+            "pages": [
+              "management/queues/list",
+              "management/queues/retrieve",
+              "management/queues/pause",
+              "management/queues/concurrency-override",
+              "management/queues/concurrency-reset"
+            ]
+          },
           {
             "group": "Schedules API",
             "pages": [

docs/management/queues/concurrency-override.mdx

@@ -0,0 +1,4 @@
+---
+title: "Override Concurrency Limit"
+openapi: "v3-openapi POST /api/v1/queues/{queueParam}/concurrency/override"
+---

docs/management/queues/concurrency-reset.mdx

@@ -0,0 +1,4 @@
+---
+title: "Reset Concurrency Limit"
+openapi: "v3-openapi POST /api/v1/queues/{queueParam}/concurrency/reset"
+---

docs/management/queues/list.mdx

@@ -0,0 +1,4 @@
+---
+title: "List Queues"
+openapi: "v3-openapi GET /api/v1/queues"
+---

docs/management/queues/pause.mdx

@@ -0,0 +1,4 @@
+---
+title: "Pause or Resume Queue"
+openapi: "v3-openapi POST /api/v1/queues/{queueParam}/pause"
+---

docs/management/queues/retrieve.mdx

@@ -0,0 +1,4 @@
+---
+title: "Retrieve Queue"
+openapi: "v3-openapi GET /api/v1/queues/{queueParam}"
+---

docs/queue-concurrency.mdx

@@ -226,3 +226,129 @@ export const subtask = task({
 ```
 
 When the parent task reaches the `triggerAndWait` call, it checkpoints and transitions to the `WAITING` state, releasing its concurrency slot back to both its queue and the environment. Once the subtask completes, the parent task will resume and re-acquire a concurrency slot.
+
+## Managing queues with the SDK
+
+The SDK provides a `queues` namespace that allows you to manage queues programmatically. You can list, retrieve, pause, resume, and modify concurrency limits for queues.
+
+<Note>
+  Import from `@trigger.dev/sdk`:
+  ```ts
+  import { queues } from "@trigger.dev/sdk";
+  ```
+</Note>
+
+### Listing queues
+
+You can list all queues in your environment with pagination support:
+
+```ts
+import { queues } from "@trigger.dev/sdk";
+
+// List all queues (returns paginated results)
+const allQueues = await queues.list();
+
+// With pagination options
+const pagedQueues = await queues.list({
+  page: 1,
+  perPage: 20,
+});
+```
+
+### Retrieving a queue
+
+You can retrieve a specific queue by its ID, or by its type and name:
+
+```ts
+import { queues } from "@trigger.dev/sdk";
+
+// Using queue ID (starts with "queue_")
+const queueById = await queues.retrieve("queue_1234");
+
+// Using type and name for a task's default queue
+const taskQueue = await queues.retrieve({
+  type: "task",
+  name: "my-task-id",
+});
+
+// Using type and name for a custom queue
+const customQueue = await queues.retrieve({
+  type: "custom",
+  name: "my-custom-queue",
+});
+```
+
+The queue object contains useful information about the queue state:
+
+```ts
+{
+  id: "queue_1234",       // Queue ID
+  name: "my-task-id",     // Queue name
+  type: "task",           // "task" or "custom"
+  running: 5,             // Currently executing runs
+  queued: 10,             // Runs waiting to execute
+  paused: false,          // Whether the queue is paused
+  concurrencyLimit: 10,   // Current concurrency limit
+  concurrency: {
+    current: 10,          // Effective limit
+    base: 10,             // Default limit from code
+    override: null,       // Override value (if set)
+    overriddenAt: null,   // When override was applied
+    overriddenBy: null,   // Who applied the override
+  }
+}
+```
+
+### Pausing and resuming queues
+
+You can pause a queue to prevent new runs from starting. Runs that are currently executing will continue to completion.
+
+```ts
+import { queues } from "@trigger.dev/sdk";
+
+// Pause a queue using its ID
+await queues.pause("queue_1234");
+
+// Or using type and name
+await queues.pause({ type: "task", name: "my-task-id" });
+await queues.pause({ type: "custom", name: "my-custom-queue" });
+```
+
+To resume a paused queue and allow new runs to start:
+
+```ts
+import { queues } from "@trigger.dev/sdk";
+
+// Resume a queue using its ID
+await queues.resume("queue_1234");
+
+// Or using type and name
+await queues.resume({ type: "task", name: "my-task-id" });
+await queues.resume({ type: "custom", name: "my-custom-queue" });
+```
+
+### Overriding concurrency limits
+
+You can temporarily override a queue's concurrency limit. This is useful for scaling up or down based on demand:
+
+```ts
+import { queues } from "@trigger.dev/sdk";
+
+// Set concurrency limit to 5
+await queues.overrideConcurrencyLimit("queue_1234", 5);
+
+// Or using type and name
+await queues.overrideConcurrencyLimit({ type: "task", name: "my-task-id" }, 20);
+```
+
+To reset the concurrency limit back to the base value defined in your code:
+
+```ts
+import { queues } from "@trigger.dev/sdk";
+
+// Reset concurrency limit to the base value
+await queues.resetConcurrencyLimit("queue_1234");
+
+// Or using type and name
+await queues.resetConcurrencyLimit({ type: "task", name: "my-task-id" });
+```