feat(speedtest): results table + repo

lib/db/migrations/013_speedtest.sql

@@ -0,0 +1,9 @@
+-- 013_speedtest.sql
+CREATE TABLE speedtest_results (
+  id          uuid PRIMARY KEY DEFAULT gen_random_uuid(),
+  down_mbps   numeric NOT NULL,
+  up_mbps     numeric NOT NULL,
+  ping_ms     numeric,
+  ran_at      timestamptz NOT NULL DEFAULT now()
+);
+CREATE INDEX idx_speedtest_ran_at ON speedtest_results (ran_at DESC);

lib/db/repos/speedtest.js

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+import { pool } from '../pool.js';
+export async function record({ down_mbps, up_mbps, ping_ms = null }) {
+  const { rows } = await pool.query(
+    `INSERT INTO speedtest_results (down_mbps, up_mbps, ping_ms) VALUES ($1,$2,$3) RETURNING *`,
+    [down_mbps, up_mbps, ping_ms]);
+  return rows[0];
+}
+export async function history(limit = 30) {
+  const { rows } = await pool.query(
+    `SELECT * FROM speedtest_results ORDER BY ran_at DESC LIMIT $1`, [limit]);
+  return rows;
+}

tests/repos/speedtest.test.js

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+import { describe, it, expect, beforeAll } from 'vitest';
+import { resetDb } from '../helpers/db.js';
+import { migrateUp } from '../../lib/db/migrate.js';
+import * as repo from '../../lib/db/repos/speedtest.js';
+
+beforeAll(async () => { await resetDb(); await migrateUp(); });
+describe('speedtest repo', () => {
+  it('records and lists newest-first', async () => {
+    await repo.record({ down_mbps: 100, up_mbps: 20, ping_ms: 8 });
+    await repo.record({ down_mbps: 110, up_mbps: 22, ping_ms: 7 });
+    const hist = await repo.history(30);
+    expect(hist.length).toBe(2);
+    expect(Number(hist[0].down_mbps)).toBe(110);   // newest first
+  });
+});