Implement free vs paid tier gating #35
Description
Phase: 2 — Monetization
Enforce feature tiers based on payment status:
| Feature | Free | Paid |
|---|---|---|
| One-time job search | Yes | Yes |
| Daily digest email | No | Yes |
| Results per search | 20 jobs | 50 jobs |
| Score threshold | Fixed 70 | Configurable |
| Query editing | No | Yes |
- Gate daily digest behind active Stripe subscription
- Enforce result limits in the search pipeline
- Show upgrade prompts for locked features in the UI