Fix web extension after de3f223c

src/lib/auth.svelte.ts

@@ -56,6 +56,23 @@ function makeNsecSigner(secretKey: Uint8Array): Signer {
   };
 }
 
+// Always reads window.nostr at call time. This avoids two issues:
+// 1. window.nostr may not be injected yet when restoreSession runs.
+// 2. Storing window.nostr in a $state wraps it in a reactive proxy, which
+//    rebinds `this` and confuses some extensions (request never resolves).
+function makeExtensionSigner(): Signer {
+  return {
+    async getPublicKey() {
+      if (!window.nostr) throw new Error("No Nostr extension found");
+      return window.nostr.getPublicKey();
+    },
+    async signEvent(template) {
+      if (!window.nostr) throw new Error("No Nostr extension found");
+      return window.nostr.signEvent(template);
+    },
+  };
+}
+
 async function setUser(pubkey: string) {
   const { loadNostrUser } = await import("@nostr/gadgets/metadata");
   user = await loadNostrUser(pubkey);
@@ -67,7 +84,7 @@ export async function loginWithExtension() {
     throw new Error("No Nostr extension found");
   }
   const pubkey = await window.nostr.getPublicKey();
-  signer = window.nostr;
+  signer = makeExtensionSigner();
   localStorage.setItem(PUBKEY_KEY, pubkey);
   localStorage.setItem(METHOD_KEY, "extension");
   localStorage.removeItem(NSEC_KEY);
@@ -129,7 +146,7 @@ export async function restoreSession() {
       return;
     }
   } else {
-    signer = window.nostr ?? null;
+    signer = makeExtensionSigner();
   }
   await setUser(pubkey);
 }