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Add multi-currency pricing (USD, CAD, EUR, GBP) for deal posts

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Fetches live exchange rates from the Frankfurter API (ECB data, free,
no API key) and displays converted prices alongside USD in every deal
message. Rates are cached in memory and auto-refreshed hourly.

https://claude.ai/code/session_01LPpSZFfyh6vdV5HGFWjoQX
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Claude
2026-02-28 00:51:52 +00:00
parent 6e84429ad1
commit 8277cf37e2
4 changed files with 113 additions and 3 deletions
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README.md
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@@ -49,3 +49,4 @@ All configuration is via environment variables (see `.env.example`):
- **Deduplication**: deals are tracked by game ID + timestamp; duplicates are never reposted
- **Pruning**: deals older than 30 days are pruned from the database so they can be reposted if they return
- **One message per deal**: each deal is posted individually so messages are independently linkable and dismissible
- **Multi-currency pricing**: deal prices are shown in USD, CAD, EUR, and GBP using live exchange rates from the [Frankfurter API](https://api.frankfurter.dev) (ECB data, no API key required). Rates are cached and refreshed hourly.