feat: replace tenants with organization management

apps/server/src/common/uuid-v7.spec.ts

@@ -0,0 +1,11 @@
+import { uuidV7 } from './uuid-v7';
+
+describe('uuidV7', () => {
+  it('creates an RFC 9562 version 7 UUID with time-sortable prefixes', () => {
+    const first = uuidV7(1_700_000_000_000);
+    const second = uuidV7(1_700_000_000_001);
+
+    expect(first).toMatch(/^[0-9a-f]{8}-[0-9a-f]{4}-7[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/);
+    expect(first < second).toBe(true);
+  });
+});

apps/server/src/common/uuid-v7.ts

@@ -0,0 +1,21 @@
+import { randomBytes } from 'node:crypto';
+
+/** Generates an RFC 9562 UUIDv7 using the current Unix timestamp and cryptographic randomness. */
+export function uuidV7(now = Date.now()): string {
+  const bytes = Buffer.alloc(16);
+  const random = randomBytes(10);
+  let timestamp = BigInt(now);
+
+  for (let index = 5; index >= 0; index -= 1) {
+    bytes[index] = Number(timestamp & 0xffn);
+    timestamp >>= 8n;
+  }
+
+  bytes[6] = 0x70 | (random[0] & 0x0f);
+  bytes[7] = random[1];
+  bytes[8] = 0x80 | (random[2] & 0x3f);
+  random.copy(bytes, 9, 3, 10);
+
+  const hex = bytes.toString('hex');
+  return `${hex.slice(0, 8)}-${hex.slice(8, 12)}-${hex.slice(12, 16)}-${hex.slice(16, 20)}-${hex.slice(20)}`;
+}