feat(frontend): add new UI components and utilities

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

frontend/src/lib/constants/policy.ts

@@ -0,0 +1,11 @@
+export const POLICY = {
+  FULL_REFUND_THRESHOLD_HOURS: 72,
+  PARTIAL_REFUND_THRESHOLD_HOURS: 24,
+  NO_SHOW_THRESHOLD_HOURS: 24,
+  DEPOSIT_ADVANCE_HOURS: 36,
+  LOYALTY_STAMP_REDEMPTION_COST: 10,
+  RESCHEDULE_BLOCK_HOURS_WITH_PAYMENTS: 72,
+  RESCHEDULE_BLOCK_HOURS_NO_PAYMENTS: 24,
+  PROTECTED_DEPOSIT_MAX_PCT: 0.50,
+  REQUIRED_DEPOSIT_PCT: 0.20,
+} as const;