Refactor NostrClient fetching and fix signer regressions

Extracted `fetchListIncrementally` logic into `RelayBatchFetcher` for better maintainability.

Fixed multiple regressions exposed by tests:
- Restored `resolveEventDTag` in `NostrClient` to support video revert flows.
- Updated `registerPrivateKeySigner` to populate `this.sessionActor`, enabling worker-based encryption for DMs.
- Ensured `setActiveSigner` and `resolveActiveSigner` exports in `client.js` correctly hydrate signer capabilities via `SignerManager`.
- Fixed `SignerManager` imports for crypto helpers.
- Updated `nostr-signer-race.test.mjs` to correctly use `Map.set` instead of `Set.add` for permission cache.

Verified with targeted tests:
- `nostr-signer-race.test.mjs`
- `nostr-send-direct-message.test.mjs`
- `signers.test.mjs`
- `revert-video-dtag.test.mjs`

Co-authored-by: PR0M3TH3AN <[email protected]>

js/nostr/client.js

@@ -214,7 +214,12 @@ import { queueSignEvent } from "./signRequestQueue.js";
 import { EventsMap } from "./eventsMap.js";
 import { PersistenceManager } from "./managers/PersistenceManager.js";
 import { ConnectionManager } from "./managers/ConnectionManager.js";
-import { SignerManager, resolveSignerCapabilities } from "./managers/SignerManager.js";
+import {
+  SignerManager,
+  resolveSignerCapabilities,
+  hydrateExtensionSignerCapabilities,
+  attachNipMethodAliases,
+} from "./managers/SignerManager.js";
 import { RelayBatchFetcher } from "./relayBatchFetcher.js";
 
 function normalizeProfileFromEvent(event) {
@@ -231,10 +236,31 @@ function normalizeProfileFromEvent(event) {
 // We keep them as pass-throughs to the registry or utility logic where appropriate.
 
 function resolveActiveSigner(pubkey) {
-  return resolveActiveSignerFromRegistry(pubkey);
+  const signer = resolveActiveSignerFromRegistry(pubkey);
+  if (signer) {
+    hydrateExtensionSignerCapabilities(signer);
+    attachNipMethodAliases(signer);
+    if (!signer.capabilities && resolveSignerCapabilities) {
+      const capsDescriptor = Object.getOwnPropertyDescriptor(signer, "capabilities");
+      if (!capsDescriptor || typeof capsDescriptor.get !== "function") {
+        signer.capabilities = resolveSignerCapabilities(signer);
+      }
+    }
+  }
+  return signer;
 }
 
 function setActiveSigner(signer) {
+  if (signer) {
+    hydrateExtensionSignerCapabilities(signer);
+    attachNipMethodAliases(signer);
+    if (!signer.capabilities && resolveSignerCapabilities) {
+      const capsDescriptor = Object.getOwnPropertyDescriptor(signer, "capabilities");
+      if (!capsDescriptor || typeof capsDescriptor.get !== "function") {
+        signer.capabilities = resolveSignerCapabilities(signer);
+      }
+    }
+  }
   setActiveSignerInRegistry(signer);
 }
 
@@ -896,6 +922,23 @@ export class NostrClient {
     }
   }
 
+  resolveEventDTag(event, fallbackEvent = null) {
+    if (!event || typeof event !== "object") {
+      if (fallbackEvent) {
+        return this.resolveEventDTag(fallbackEvent);
+      }
+      return "";
+    }
+    const val = getDTagValueFromTags(event.tags);
+    if (val) {
+      return val;
+    }
+    if (fallbackEvent) {
+      return this.resolveEventDTag(fallbackEvent);
+    }
+    return "";
+  }
+
   getActiveKey(video) {
     return getActiveKey(video);
   }
@@ -2921,6 +2964,12 @@ export class NostrClient {
     }
     const adapter = await createNsecAdapter({ privateKey, pubkey });
     this.signerManager.setActiveSigner(adapter);
+    this.sessionActor = {
+      pubkey: adapter.pubkey,
+      privateKey: privateKey,
+      source: "nsec",
+      createdAt: Date.now(),
+    };
     return adapter;
   }
 

js/nostr/managers/SignerManager.js

@@ -85,7 +85,7 @@ export function resolveSignerCapabilities(signer) {
   };
 }
 
-function hydrateExtensionSignerCapabilities(signer) {
+export function hydrateExtensionSignerCapabilities(signer) {
   if (!signer || typeof signer !== "object") {
     return;
   }
@@ -116,7 +116,7 @@ function hydrateExtensionSignerCapabilities(signer) {
   }
 }
 
-function attachNipMethodAliases(signer) {
+export function attachNipMethodAliases(signer) {
   if (!signer || typeof signer !== "object") {
     return;
   }

tests/nostr-signer-race.test.mjs

@@ -15,7 +15,11 @@ test("ensureActiveSignerForPubkey prefers concurrent login over late extension i
     const client = new NostrClient();
     client.pubkey = HEX_PUBKEY;
     // Pre-condition: Cache permissions to trigger the waitForNip07Extension logic
-    client.extensionPermissionCache.add("sign_event");
+    if (typeof client.extensionPermissionCache.add === 'function') {
+      client.extensionPermissionCache.add("sign_event");
+    } else if (typeof client.extensionPermissionCache.set === 'function') {
+      client.extensionPermissionCache.set("sign_event", true);
+    }
 
     // Mock a NIP-46 signer that might be set during the race
     const mockNip46Signer = {