diff --git a/js/nostr/client.js b/js/nostr/client.js
index d0add0fa..02630b1c 100644
--- a/js/nostr/client.js
+++ b/js/nostr/client.js
@@ -800,6 +800,8 @@ export class NostrClient {
   get sessionActorCipherClosuresPrivateKey() { return this.signerManager.sessionActorCipherClosuresPrivateKey; }
   set sessionActorCipherClosuresPrivateKey(val) { this.signerManager.sessionActorCipherClosuresPrivateKey = val; }
 
+  get extensionPermissionCache() { return this.signerManager.extensionPermissionCache; }
+
   get pool() { return this.connectionManager.pool; }
   set pool(val) { this.connectionManager.pool = val; }
 
@@ -940,6 +942,23 @@ 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);
   }
@@ -2973,6 +2992,21 @@ export class NostrClient {
     return this.signerManager.ensureActiveSignerForPubkey(pubkey);
   }
 
+  async registerPrivateKeySigner({ privateKey, pubkey }) {
+    if (!privateKey) {
+      throw new Error("Private key is required.");
+    }
+    const adapter = await createNsecAdapter({ privateKey, pubkey });
+    this.signerManager.setActiveSigner(adapter);
+    this.sessionActor = {
+      pubkey: adapter.pubkey,
+      privateKey: privateKey,
+      source: "nsec",
+      createdAt: Date.now(),
+    };
+    return adapter;
+  }
+
   async loginWithExtension(options) {
     return this.signerManager.loginWithExtension(options);
   }
@@ -2981,6 +3015,10 @@ export class NostrClient {
     return this.signerManager.connectRemoteSigner(params);
   }
 
+  installNip46Client(client) {
+    this.signerManager.installNip46Client(client);
+  }
+
   async useStoredRemoteSigner(options) {
     return this.signerManager.useStoredRemoteSigner(options);
   }
diff --git a/js/nostr/managers/SignerManager.js b/js/nostr/managers/SignerManager.js
index 816237d0..182d1d4f 100644
--- a/js/nostr/managers/SignerManager.js
+++ b/js/nostr/managers/SignerManager.js
@@ -47,6 +47,7 @@ import {
   summarizeUrlForLog,
 } from "../nip46LoggingUtils.js";
 
+import { bytesToHex } from "../../../vendor/crypto-helpers.bundle.min.js";
 import { devLogger, userLogger } from "../../utils/logger.js";
 import { createPrivateKeyCipherClosures } from "../signerHelpers.js";
 import { queueSignEvent } from "../signRequestQueue.js";
@@ -263,6 +264,10 @@ export class SignerManager {
     this.extensionReady = false;
     this.extensionPermissionsGranted = false;
     this.extensionPermissionCache = new Map();
+    const storedPermissions = readStoredNip07Permissions();
+    for (const method of storedPermissions) {
+      this.extensionPermissionCache.set(method, true);
+    }
     this.sessionActorCipherClosures = null;
     this.sessionActorCipherClosuresPrivateKey = null;
     this.remoteSignerListeners = new Set();
@@ -311,21 +316,45 @@ export class SignerManager {
 
   async ensureSessionActor() {
     if (this.sessionActor) {
-      return this.sessionActor;
+      return this.sessionActor.pubkey;
     }
 
     if (this.lockedSessionActor) {
-      return this.lockedSessionActor;
+      return this.lockedSessionActor.pubkey;
     }
 
     const storedEntry = readStoredSessionActorEntry();
     if (storedEntry) {
       this.lockedSessionActor = storedEntry;
       this.sessionActor = storedEntry;
-      return storedEntry;
+      return storedEntry.pubkey;
     }
 
-    return null;
+    const tools = await ensureNostrTools();
+    let privateKey = "";
+    if (tools && typeof tools.generateSecretKey === "function") {
+      const secret = tools.generateSecretKey();
+      privateKey = bytesToHex(secret);
+    } else if (tools && typeof tools.generatePrivateKey === "function") {
+      privateKey = tools.generatePrivateKey();
+    } else {
+      throw new Error("Failed to generate session actor: nostr-tools missing key generation.");
+    }
+
+    let pubkey = "";
+    if (tools && typeof tools.getPublicKey === "function") {
+      pubkey = tools.getPublicKey(privateKey);
+    }
+
+    const newActor = {
+      pubkey,
+      privateKey,
+      source: "generated",
+      createdAt: Date.now(),
+    };
+
+    this.sessionActor = newActor;
+    return pubkey;
   }
 
   clearStoredSessionActor() {
@@ -423,6 +452,9 @@ export class SignerManager {
     if (missing.length === 0) {
       this.extensionPermissionsGranted = true;
       this.extensionPermissionCache.set(cacheKey, true);
+      for (const method of methods) {
+        this.extensionPermissionCache.set(method, true);
+      }
       return { ok: true };
     }
 
@@ -441,6 +473,9 @@ export class SignerManager {
         writeStoredNip07Permissions(missing);
         this.extensionPermissionsGranted = true;
         this.extensionPermissionCache.set(cacheKey, true);
+        for (const method of missing) {
+          this.extensionPermissionCache.set(method, true);
+        }
         return { ok: true };
       }
       return { ok: false, error: "permission-denied" };
@@ -548,6 +583,16 @@ export class SignerManager {
     return { pubkey: normalized, signer: adapter };
   }
 
+  installNip46Client(client) {
+    if (!client) {
+      return;
+    }
+    this.nip46Client = client;
+    this.pubkey = client.userPubkey || client.remotePubkey; // Fallback
+    this.setActiveSigner(client.getActiveSigner());
+    this.emitRemoteSignerChange();
+  }
+
   async connectRemoteSigner({
     connectionString,
     remember = true,
@@ -894,6 +939,10 @@ export class SignerManager {
     };
   }
 
+  signEventWithPrivateKey(event, privateKey) {
+    return signEventWithPrivateKey(event, privateKey);
+  }
+
   logout() {
     const previousPubkey = this.pubkey;
     this.pubkey = null;
diff --git a/js/nostr/relayBatchFetcher.js b/js/nostr/relayBatchFetcher.js
index 7afe346e..5fdf0910 100644
--- a/js/nostr/relayBatchFetcher.js
+++ b/js/nostr/relayBatchFetcher.js
@@ -5,6 +5,9 @@ import { normalizeNostrPubkey, sanitizeRelayList } from "./nip46Client.js";
 import { DEFAULT_RELAY_URLS, RELAY_URLS } from "./toolkit.js";
 
 export class RelayBatchFetcher {
+  /**
+   * @param {import("./client.js").NostrClient} client
+   */
   constructor(client) {
     this.client = client;
   }
diff --git a/js/nostr/sessionActor.js b/js/nostr/sessionActor.js
index bbbafc2f..4088b37a 100644
--- a/js/nostr/sessionActor.js
+++ b/js/nostr/sessionActor.js
@@ -484,7 +484,17 @@ export function clearStoredSessionActor() {
 
 export function isSessionActor(nostrClient) {
   const sa = nostrClient?.sessionActor;
-  return !!sa && sa.source !== "nsec";
+  if (!sa) {
+    return false;
+  }
+  if (
+    nostrClient?.pubkey &&
+    sa.pubkey &&
+    nostrClient.pubkey !== sa.pubkey
+  ) {
+    return false;
+  }
+  return sa.source !== "nsec";
 }
 
 function _closeSessionActorDb() {
diff --git a/tests/nostr-login-permissions.test.mjs b/tests/nostr-login-permissions.test.mjs
index 8193512b..60ba42c9 100644
--- a/tests/nostr-login-permissions.test.mjs
+++ b/tests/nostr-login-permissions.test.mjs
@@ -458,10 +458,11 @@ describe("NIP-07 Login Permissions", () => {
   it("NIP-07 login does not wait for deferred permission grants", async () => {
     clearStoredPermissions();
     const env = setupLoginEnvironment();
-    const originalEnsurePermissions = nostrClient.ensureExtensionPermissions;
+    const target = nostrClient.signerManager || nostrClient;
+    const originalEnsurePermissions = target.ensureExtensionPermissions;
     let completionPromise;
 
-    nostrClient.ensureExtensionPermissions = async () => {
+    target.ensureExtensionPermissions = async () => {
       completionPromise = new Promise((_, reject) => {
         setTimeout(() => reject(new Error("permission denied")), 300);
       });
@@ -484,7 +485,7 @@ describe("NIP-07 Login Permissions", () => {
         "deferred permission grants should still reject",
       );
     } finally {
-      nostrClient.ensureExtensionPermissions = originalEnsurePermissions;
+      target.ensureExtensionPermissions = originalEnsurePermissions;
       env.restore();
       nostrClient.logout();
       clearStoredPermissions();
diff --git a/tests/nostr-signer-race.test.mjs b/tests/nostr-signer-race.test.mjs
index 3cb34217..a5d8e3bb 100644
--- a/tests/nostr-signer-race.test.mjs
+++ b/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 = {