Feature: Add configurable seed relays, archive kinds, and listen port via environment variables

[r0d8lsh0p]

Hi Barry

Thank you for your great relays. It's my pleasure to submit this set of new optional features for your WOT relay, which I have written for and are in production use with wss://relay.shosho.live

Summary

Three new optional environment variables that make wot-relay more flexible for operators running domain-specific relays (live streaming, marketplace, etc.) without requiring code changes.

All three are fully backward-compatible — existing deployments with no new env vars set behave identically to before.

SEED_RELAYS

Comma-separated list of WSS URLs to use as seed relays. Falls back to the current built-in list of 14 relays if not set.

SEED_RELAYS="wss://nos.lol,wss://relay.damus.io,wss://relay.primal.net"

ARCHIVE_KINDS

Comma-separated list of Nostr event kind numbers to archive and clean up. Falls back to the current default kinds if not set. ARCHIVE_REACTIONS=TRUE still adds kind 7 automatically if not already in the list.

ARCHIVE_KINDS="0,1,3,5,6,7,30023,30311,34235,9735"

This also simplifies archiveTrustedNotes() by removing the duplicated kind list that was identical in both the ARCHIVE_REACTIONS true/false branches.

PORT

Configurable listen port. Falls back to 3334 if not set. Useful for cloud platforms (Railway, Fly.io, etc.) that inject their own PORT variable.

Changes

• main.go — new SeedRelays and ArchiveKinds fields on Config, parsing in LoadConfig(), wired into archiveTrustedNotes() and deleteOldNotes()
• .env.example — documents both new variables with examples
• README.md — adds the new variables to the setup instructions

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Thank your for your time reviewing this PR. If you have any questions or comments or prefer changes please let me know and I will be happy to help.

Best regards

Rod