feat: scaffold supabase multi-tenant backend

packages/db/src/index.js

@@ -0,0 +1,18 @@
+import pg from 'pg';
+import { DEFAULT_DATABASE_URL } from '../../config/src/index.js';
+const { Pool } = pg;
+export function createPool(options = {}) {
+    return new Pool({
+        connectionString: options.connectionString || process.env.DATABASE_URL || DEFAULT_DATABASE_URL,
+        max: options.max || 10,
+        idleTimeoutMillis: options.idleTimeoutMillis || 30_000,
+    });
+}
+export async function query(pool, sql, params = []) {
+    const result = await pool.query(sql, params);
+    return result.rows;
+}
+export async function queryOne(pool, sql, params = []) {
+    const rows = await query(pool, sql, params);
+    return rows[0] ?? null;
+}

packages/db/src/index.ts

@@ -0,0 +1,28 @@
+import pg from 'pg';
+import { DEFAULT_DATABASE_URL } from '../../config/src/index.js';
+
+const { Pool } = pg;
+
+export interface DbPoolOptions {
+  connectionString?: string;
+  max?: number;
+  idleTimeoutMillis?: number;
+}
+
+export function createPool(options: DbPoolOptions = {}) {
+  return new Pool({
+    connectionString: options.connectionString || process.env.DATABASE_URL || DEFAULT_DATABASE_URL,
+    max: options.max || 10,
+    idleTimeoutMillis: options.idleTimeoutMillis || 30_000,
+  });
+}
+
+export async function query<T = unknown>(pool: pg.Pool, sql: string, params: unknown[] = []): Promise<T[]> {
+  const result = await pool.query(sql, params);
+  return result.rows as T[];
+}
+
+export async function queryOne<T = unknown>(pool: pg.Pool, sql: string, params: unknown[] = []): Promise<T | null> {
+  const rows = await query<T>(pool, sql, params);
+  return rows[0] ?? null;
+}