test(e2e): add SessionFactory with sha256 token hashing

frontend/tests/factories/session.ts

@@ -0,0 +1,26 @@
+import {createHash, randomUUID} from 'node:crypto'
+import {Factory} from '../support/factory'
+
+// Mirrors pkg/models/sessions.go HashSessionToken(). Unsalted because refresh
+// tokens are high-entropy (128 random bytes hex-encoded), not human passwords.
+export function hashSessionToken(raw: string): string {
+	return createHash('sha256').update(raw).digest('hex')
+}
+
+export class SessionFactory extends Factory {
+	static table = 'sessions'
+
+	static factory() {
+		const now = new Date()
+		return {
+			id: randomUUID(),
+			user_id: 1,
+			token_hash: hashSessionToken('placeholder-override-me'),
+			device_info: 'Firefox on Linux',
+			ip_address: '192.0.2.5',
+			is_long_session: false,
+			last_active: now.toISOString(),
+			created: now.toISOString(),
+		}
+	}
+}