feat: add Drizzle enums for schema

Made-with: Cursor

src/utils/uuid.ts

@@ -0,0 +1,37 @@
+import { randomBytes } from 'node:crypto';
+
+/**
+ * Generate UUID v7 (time-ordered, sortable).
+ * Simplified implementation: timestamp (48 bit) + random (74 bit).
+ */
+export function uuid7(): string {
+  const timestamp = Date.now();
+  const random = randomBytes(10);
+
+  const high = (timestamp / 0x100000000) >>> 0;
+  const low = timestamp >>> 0;
+
+  const b = new Uint8Array(16);
+  b[0] = (high >> 24) & 0xff;
+  b[1] = (high >> 16) & 0xff;
+  b[2] = (high >> 8) & 0xff;
+  b[3] = high & 0xff;
+  b[4] = (low >> 24) & 0xff;
+  b[5] = (low >> 16) & 0xff;
+  b[6] = ((low >> 8) & 0x3f) | 0x70;
+  b[7] = low & 0xff;
+  b[8] = 0x80 | (random[0] & 0x3f);
+  b[9] = random[1];
+  b[10] = random[2];
+  b[11] = random[3];
+  b[12] = random[4];
+  b[13] = random[5];
+  b[14] = random[6];
+  b[15] = random[7];
+
+  const hex = Array.from(b)
+    .map((x) => x.toString(16).padStart(2, '0'))
+    .join('');
+
+  return `${hex.slice(0, 8)}-${hex.slice(8, 12)}-${hex.slice(12, 16)}-${hex.slice(16, 20)}-${hex.slice(20)}`;
+}