fix(queue): remove the dead {search-queue} — producers with no consumer (#379)

The {search-queue} BullMQ queue had producers on every page/space/workspace change
but NO consumer/@Processor — it lives in Docmost's EE edition (external search
drivers), never in this fork. Search works independently via the pages tsvector DB
trigger; the queue was pure dead weight, growing forever (1902 stuck jobs in Redis,
the first real hit of the #355 queue-growing alert — which fired correctly).

Remove the plumbing:
- the 3 producers: drop @InjectQueue(SEARCH_QUEUE) + every searchQueue.add(...) from
  page/space/workspace.listener.ts (and the isTypesense() gate that only wrapped the
  search enqueue). page.listener.handlePageUpdated did ONLY the search enqueue, so its
  @OnEvent(PAGE_UPDATED) handler is removed; the other handlers keep their aiQueue.add.
- the registration (queue.module.ts) and the metrics injection + 'search' depth-metric
  entry (metrics-bull.service.ts).
- the constants: QueueName.SEARCH_QUEUE + the 6 unused SEARCH_INDEX_* QueueJob members
  (grep-confirmed unreferenced). Shared QueueJob members (PAGE_*, SPACE_DELETED,
  WORKSPACE_DELETED — used by the AI queue / embedding/history/notification processors)
  are kept.

Search (tsvector trigger, search.service) and the PAGE_UPDATED websocket listener are
untouched. Verified: apps/server tsc --noEmit 0 errors; 6 spec suites / 52 tests green.

Ops (maintainer, out of code scope): one-time Redis cleanup
`redis-cli --scan --pattern "bull:{search-queue}:*" | xargs -r redis-cli del`, then
confirm bullmq_queue_depth{queue="search"} stays 0 (the metric no longer injects it).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

apps/server/src/integrations/metrics/metrics-bull.service.ts

@@ -46,7 +46,6 @@ export class MetricsBullService implements OnModuleInit, OnModuleDestroy {
     @InjectQueue(QueueName.GENERAL_QUEUE) generalQueue: Queue,
     @InjectQueue(QueueName.BILLING_QUEUE) billingQueue: Queue,
     @InjectQueue(QueueName.FILE_TASK_QUEUE) fileTaskQueue: Queue,
-    @InjectQueue(QueueName.SEARCH_QUEUE) searchQueue: Queue,
     @InjectQueue(QueueName.AI_QUEUE) aiQueue: Queue,
     @InjectQueue(QueueName.HISTORY_QUEUE) historyQueue: Queue,
     @InjectQueue(QueueName.NOTIFICATION_QUEUE) notificationQueue: Queue,
@@ -58,7 +57,6 @@ export class MetricsBullService implements OnModuleInit, OnModuleDestroy {
       { label: 'general', queue: generalQueue },
       { label: 'billing', queue: billingQueue },
       { label: 'file-task', queue: fileTaskQueue },
-      { label: 'search', queue: searchQueue },
       { label: 'ai', queue: aiQueue },
       { label: 'history', queue: historyQueue },
       { label: 'notification', queue: notificationQueue },

apps/server/src/integrations/queue/constants/queue.constants.ts

@@ -4,7 +4,6 @@ export enum QueueName {
   GENERAL_QUEUE = '{general-queue}',
   BILLING_QUEUE = '{billing-queue}',
   FILE_TASK_QUEUE = '{file-task-queue}',
-  SEARCH_QUEUE = '{search-queue}',
   AI_QUEUE = '{ai-queue}',
   HISTORY_QUEUE = '{history-queue}',
   NOTIFICATION_QUEUE = '{notification-queue}',
@@ -32,12 +31,6 @@ export enum QueueJob {
   IMPORT_TASK = 'import-task',
   EXPORT_TASK = 'export-task',
 
-  SEARCH_INDEX_PAGE = 'search-index-page',
-  SEARCH_INDEX_PAGES = 'search-index-pages',
-  SEARCH_INDEX_COMMENT = 'search-index-comment',
-  SEARCH_INDEX_COMMENTS = 'search-index-comments',
-  SEARCH_INDEX_ATTACHMENT = 'search-index-attachment',
-  SEARCH_INDEX_ATTACHMENTS = 'search-index-attachments',
   SEARCH_REMOVE_PAGE = 'search-remove-page',
   SEARCH_REMOVE_ASSET = 'search-remove-attachment',
   SEARCH_REMOVE_FACE = 'search-remove-comment',

apps/server/src/integrations/queue/queue.module.ts

@@ -57,14 +57,6 @@ import { GeneralQueueProcessor } from './processors/general-queue.processor';
         attempts: 1,
       },
     }),
-    BullModule.registerQueue({
-      name: QueueName.SEARCH_QUEUE,
-      defaultJobOptions: {
-        removeOnComplete: true,
-        removeOnFail: true,
-        attempts: 2,
-      },
-    }),
     BullModule.registerQueue({
       name: QueueName.AI_QUEUE,
       defaultJobOptions: {