feat: add nip45.enabled test and docs

Author: a-khushal

CONFIGURATION.md

@@ -165,6 +165,7 @@ The settings below are listed in alphabetical order by name. Please keep this ta
 | nip05.mode                                  | NIP-05 verification mode: `enabled` requires verification, `passive` verifies without blocking, `disabled` does nothing. Defaults to `disabled`. |
 | nip05.verifyExpiration                      | Time in milliseconds before a successful NIP-05 verification expires and needs re-checking. Defaults to 604800000 (1 week). |
 | nip05.verifyUpdateFrequency                 | Minimum interval in milliseconds between re-verification attempts for a given author. Defaults to 86400000 (24 hours). |
+| nip45.enabled                               | Enable or disable NIP-45 COUNT handling. Defaults to true. |
 | paymentProcessors.lnbits.baseURL            | Base URL of your Lnbits instance. |
 | paymentProcessors.lnbits.callbackBaseURL    | Public-facing Nostream's Lnbits Callback URL. (e.g. https://relay.your-domain.com/callbacks/lnbits) |
 | paymentProcessors.lnurl.invoiceURL          | [LUD-06 Pay Request](https://github.com/lnurl/luds/blob/luds/06.md) provider URL. (e.g. https://getalby.com/lnurlp/your-username) |

test/unit/handlers/count-message-handler.spec.ts

@@ -129,5 +129,20 @@ describe('CountMessageHandler', () => {
         'error: unable to count events',
       ])
     })
+
+    it('returns CLOSED when COUNT is disabled in settings', async () => {
+      handler = new CountMessageHandler(webSocket, eventRepository, () => ({ nip45: { enabled: false } }) as Settings)
+
+      const message = [MessageType.COUNT, 'q1', {}] as any
+
+      await handler.handleMessage(message)
+
+      expect(eventRepository.countByFilters).to.not.have.been.called
+      expect(webSocketOnMessageStub).to.have.been.calledOnceWithExactly([
+        MessageType.CLOSED,
+        'q1',
+        'COUNT is disabled by relay configuration',
+      ])
+    })
   })
 })