Add multi-account OAuth, Obsidian integration, product assets, and test tooling

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

test-gmail-imap.mjs

@@ -0,0 +1,32 @@
+import { ImapFlow } from 'imapflow';
+
+const client = new ImapFlow({
+  host: 'imap.gmail.com',
+  port: 993,
+  secure: true,
+  auth: {
+    user: process.env.GMAIL_EMAIL || 'garfield.heron@gmail.com',
+    pass: process.env.GMAIL_APP_PASSWORD || 'ldmk duee movy hruy',
+  },
+  logger: false,
+});
+
+try {
+  console.log('Connecting to Gmail IMAP...');
+  await client.connect();
+  console.log('Connected!');
+  
+  const mailbox = await client.mailboxOpen('INBOX');
+  console.log('Mailbox opened:', mailbox.path, 'messages:', mailbox.exists);
+  
+  const criteria = { or: [{ subject: 'test' }, { from: 'test' }] };
+  const uids = await client.search(criteria, { uid: true });
+  console.log('Search results:', uids);
+  
+  await client.logout();
+  console.log('Done');
+} catch (err) {
+  console.error('ERROR:', err.message);
+  console.error(err.stack);
+  process.exit(1);
+}