feat(proxy): write pass-through — POST messages to Discord#10
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Adds POST /api/v10/channels/{channelId}/messages that forwards the
request body and Content-Type to Discord, returns the response verbatim,
and injects successfully sent messages into the cache immediately.
- Multipart/form-data bodies forwarded transparently (raw bytes)
- Safe JSON parse on Discord responses (handles non-JSON 502/503)
- Cache injection validates snowflake format before writing
- 429 rate limit: body consumed, warning logged, connection freed
- 503 returned when no DiscordClient configured (read-only mode)
54 tests across 6 files, 148 assertions.
Closes #4
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
Adds write pass-through so agents can send Discord messages through scream-hole. POST requests are forwarded to Discord with the response returned verbatim, and successfully sent messages are injected into the cache immediately.
Changes
sendMessagemethod on DiscordClient, refactoreddiscordFetchfor POST support, safe JSON parse for non-JSON errors, 429 body consumed + loggedTest Plan
bun test— 54 pass, 0 fail, 148 assertionsbunx tsc --noEmit— cleanCloses #4
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