chore: remove dead getQueueName method, clarify hot path docs

Author: nicktrn

apps/webapp/CLAUDE.md

@@ -61,7 +61,7 @@ Some services (e.g., `cancelTaskRun.server.ts`, `batchTriggerV3.server.ts`) bran
 
 The `triggerTask.server.ts` service is the **highest-throughput code path** in the system. Every API trigger call goes through it. Keep it fast:
 
-- **Do NOT add database queries** to the trigger path. The only acceptable DB query for task defaults (TTL, etc.) is the single existing `backgroundWorkerTask.findFirst()` call in the queue concern. Piggyback on it instead of adding new queries.
+- **Do NOT add database queries** to `triggerTask.server.ts` or `batchTriggerV3.server.ts`. Task defaults (TTL, etc.) are resolved via `backgroundWorkerTask.findFirst()` in the queue concern (`queues.server.ts`) - one query per request, in mutually exclusive branches depending on locked/non-locked path. Piggyback on the existing query instead of adding new ones.
 - **Two-stage resolution pattern**: Task metadata is resolved in two stages by design:
   1. **Trigger time** (`triggerTask.server.ts`): Only TTL is resolved from task defaults. Everything else uses whatever the caller provides.
   2. **Dequeue time** (`dequeueSystem.ts`): Full `BackgroundWorkerTask` is loaded and retry config, machine config, maxDuration, etc. are resolved against task defaults.

apps/webapp/app/runEngine/concerns/queues.server.ts

@@ -186,11 +186,6 @@ export class DefaultQueueManager implements QueueManager {
     };
   }
 
-  async getQueueName(request: TriggerTaskRequest): Promise<string> {
-    const result = await this.getTaskQueueInfo(request);
-    return result.queueName;
-  }
-
   private async getTaskQueueInfo(
     request: TriggerTaskRequest
   ): Promise<{ queueName: string; taskTtl?: string | null }> {

apps/webapp/app/runEngine/types.ts

@@ -62,7 +62,6 @@ export interface QueueManager {
     request: TriggerTaskRequest,
     lockedBackgroundWorker?: LockedBackgroundWorker
   ): Promise<QueueProperties>;
-  getQueueName(request: TriggerTaskRequest): Promise<string>;
   validateQueueLimits(
     env: AuthenticatedEnvironment,
     queueName: string,