fix(consumer): only list items for the current keypair

packages/consumer/mod.ts

···
 
       for (const record of res.data.records) {
         const item = parse(AppCisternLexiconItem.mainSchema, record.value);
+
+        if (item.pubkey !== this.keypair.publicKey) continue;
+
         const decrypted = decryptText(this.keypair.privateKey, {
           nonce: item.nonce,
           cipherText: item.ciphertext,