Follow-up fixes for e164-less linking

app/main.main.ts

@@ -1367,9 +1367,9 @@ async function showAbout() {
 
 async function getIsLinked() {
   try {
-    const number = await sql.sqlRead('getItemById', 'number_id');
+    const aci = await sql.sqlRead('getItemById', 'uuid_id');
     const password = await sql.sqlRead('getItemById', 'password');
-    return Boolean(number && password);
+    return Boolean(aci && password);
   } catch (e) {
     return false;
   }

ts/textsecure/WebAPI.preload.ts

@@ -1015,8 +1015,8 @@ export type GetSenderCertificateResultType = Readonly<{ certificate: string }>;
 
 const whoamiResultZod = z.object({
   uuid: z.string(),
-  pni: untaggedPniSchema,
-  number: z.string(),
+  pni: untaggedPniSchema.nullish(),
+  number: z.string().nullish(),
   usernameHash: z.string().nullish(),
   usernameLinkHandle: z.string().nullish(),
 });

ts/util/checkOurPniIdentityKey.preload.ts

@@ -17,6 +17,12 @@ export async function checkOurPniIdentityKey(): Promise<void> {
   }
 
   const { pni: remotePni } = await whoami();
+  if (remotePni == null) {
+    log.warn(`remote pni absent, local is ${ourPni}`);
+    window.Whisper.events.emit('unlinkAndDisconnect');
+    return;
+  }
+
   if (toTaggedPni(remotePni) !== ourPni) {
     log.warn(`remote pni mismatch, ${remotePni} != ${ourPni}`);
     window.Whisper.events.emit('unlinkAndDisconnect');