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

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

src/db.ts

@@ -0,0 +1,81 @@
+import mysql from 'mysql2/promise';
+
+const host = process.env.MYSQL_HOST || '127.0.0.1';
+const port = parseInt(process.env.MYSQL_PORT || '3306', 10);
+const user = process.env.MYSQL_USER || 'root';
+const password = process.env.MYSQL_PASSWORD || '';
+
+let pool: mysql.Pool | null = null;
+
+export function getPool(): mysql.Pool {
+  if (!pool) {
+    throw new Error('Database pool not initialized. Call initDatabase() first.');
+  }
+  return pool;
+}
+
+export function isPoolReady(): boolean {
+  return pool !== null;
+}
+
+export async function initDatabase(): Promise<void> {
+  // Create database if it doesn't exist
+  const tmpConn = await mysql.createConnection({ host, port, user, password });
+  await tmpConn.execute('CREATE DATABASE IF NOT EXISTS hermes_oauth');
+  await tmpConn.end();
+
+  pool = mysql.createPool({
+    host,
+    port,
+    user,
+    password,
+    database: 'hermes_oauth',
+    waitForConnections: true,
+    connectionLimit: 10,
+    queueLimit: 0,
+    timezone: 'Z',
+  });
+
+  const db = await pool.getConnection();
+  try {
+    await db.execute(`
+      CREATE TABLE IF NOT EXISTS oauth_clients (
+        client_id VARCHAR(255) PRIMARY KEY,
+        client_secret VARCHAR(255) NOT NULL,
+        client_name VARCHAR(255),
+        redirect_urls JSON,
+        grant_types JSON,
+        created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+        last_used TIMESTAMP NULL,
+        is_static BOOLEAN DEFAULT FALSE,
+        INDEX idx_last_used (last_used)
+      )
+    `);
+
+    await db.execute(`
+      CREATE TABLE IF NOT EXISTS oauth_auth_codes (
+        code VARCHAR(255) PRIMARY KEY,
+        client_id VARCHAR(255),
+        redirect_uri TEXT,
+        expires_at TIMESTAMP,
+        used BOOLEAN DEFAULT FALSE,
+        INDEX idx_expires (expires_at)
+      )
+    `);
+
+    await db.execute(`
+      CREATE TABLE IF NOT EXISTS oauth_tokens (
+        token VARCHAR(255) PRIMARY KEY,
+        client_id VARCHAR(255),
+        token_type ENUM('access', 'refresh') DEFAULT 'access',
+        expires_at TIMESTAMP,
+        created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+        INDEX idx_expires (expires_at)
+      )
+    `);
+  } finally {
+    db.release();
+  }
+
+  console.log('[db] MySQL connected and schema initialized');
+}