Lazy-initialize signer from extension on demand

js/services/hashtagPreferencesService.js

@@ -593,7 +593,11 @@ class HashtagPreferencesService {
       throw error;
     }
 
-    const signer = getActiveSigner();
+    let signer = getActiveSigner();
+    if (!signer) {
+      signer = await nostrClient.ensureActiveSignerForPubkey(targetPubkey);
+    }
+
     if (!signer || typeof signer.signEvent !== "function") {
       const error = new Error("An active signer is required to publish preferences.");
       error.code = "hashtag-preferences-missing-signer";

js/subscriptions.js

@@ -590,7 +590,11 @@ class SubscriptionsManager {
       throw new Error("No pubkey => cannot publish subscription list.");
     }
 
-    const signer = getActiveSigner();
+    let signer = getActiveSigner();
+    if (!signer) {
+      signer = await nostrClient.ensureActiveSignerForPubkey(userPubkey);
+    }
+
     if (!signer) {
       const error = new Error(
         "An active signer is required to update subscriptions."

js/userBlocks.js

@@ -1471,7 +1471,11 @@ class UserBlockListManager {
 
     onStatus?.({ status: "publishing" });
 
-    const signer = getActiveSigner();
+    let signer = getActiveSigner();
+    if (!signer) {
+      signer = await nostrClient.ensureActiveSignerForPubkey(userPubkey);
+    }
+
     if (!signer) {
       const err = new Error(
         "An active signer is required to update the block list."