fix(api): run baseline migration first so an empty database boots

Migrations were applied in plain name order, so 0002_admin_schema.sql ran
before 20260910113720_first and failed with relation "City" does not exist.
sortMigrations now always puts the baseline first; existing databases are
unaffected because their applied names are unchanged.

Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>

apps/api/src/prisma/migrate.spec.ts

@@ -0,0 +1,28 @@
+import { readdirSync } from 'fs';
+import { join } from 'path';
+import { sortMigrations } from './migrate';
+
+describe('sortMigrations', () => {
+  it('puts the baseline before 0002 so an empty database can boot', () => {
+    const names = sortMigrations([
+      { name: '20260914165255_sync_schema_drift' },
+      { name: '0002_admin_schema.sql' },
+      { name: '20260910113720_first' },
+    ]).map((f) => f.name);
+
+    expect(names).toEqual([
+      '20260910113720_first',
+      '0002_admin_schema.sql',
+      '20260914165255_sync_schema_drift',
+    ]);
+  });
+
+  it('starts the real migrations folder with the baseline', () => {
+    const dir = join(__dirname, '..', '..', 'prisma', 'migrations');
+    const entries = readdirSync(dir)
+      .filter((name) => name !== 'migration_lock.toml')
+      .map((name) => ({ name }));
+
+    expect(sortMigrations(entries)[0].name).toBe('20260910113720_first');
+  });
+});

apps/api/src/prisma/migrate.ts

@@ -152,7 +152,23 @@ function discoverMigrationFiles(dir: string): MigrationFile[] {
     }
   }
 
-  return files.sort((a, b) => a.name.localeCompare(b.name));
+  return sortMigrations(files);
+}
+
+/**
+ * The baseline creates every table, so it must run first on an empty database.
+ * Plain name order put `0002_admin_schema.sql` ahead of `20260910113720_first`,
+ * and a fresh boot died on `relation "City" does not exist`. Existing databases
+ * never noticed because they already had the baseline applied.
+ */
+const BASELINE_MIGRATION = '20260910113720_first';
+
+export function sortMigrations<T extends { name: string }>(files: T[]): T[] {
+  return [...files].sort((a, b) => {
+    if (a.name === BASELINE_MIGRATION) return -1;
+    if (b.name === BASELINE_MIGRATION) return 1;
+    return a.name.localeCompare(b.name);
+  });
 }
 
 export async function runMigrations(prisma: PrismaClient): Promise<MigrationResult> {