feat: add Discord server status module

[koji-assistant]

Summary

• Add discord-server-status, a lightweight module for Discord-visible server/player status.
• Adds Discord !status / !serverstatus / !players trigger replies, optional scheduled Discord status posts, and an in-game /serverstatus command.
• Reports Takaro-visible server name + online player count/list; intentionally does not promise host CPU/RAM/process stats because those require panel/core support.

Source

• Discord archive message 6c2749ee-c7b4-4649-b508-01bb1456ccb1 from svmotnik in #discussion at 2026-07-17T16:35:04.596Z:

  Hello! Can Takaro show server stats on Discord? Cause I can't find any info.

Test plan

• npm run build
• node --test-concurrency 1 --import=ts-node-maintained/register/esm --test 'modules/discord-server-status/test/*.test.ts'
• node --check on all module component/helper JS files
• node dist/scripts/module-to-json.js modules/discord-server-status /tmp/discord-server-status-export.json
• Verified export contains command serverstatus, hook discordStatus, cron postDiscordStatus, and helper functions.
• Sandbox push/runtime QA blocked during this cron by sandbox login returning HTTP 503: no available server; needs retry when sandbox is healthy.
• Real Discord hook/cron QA still needed after sandbox import/install with a configured Discord channel.

Review notes

• Local review checked for common module pitfalls: no external HTTP calls, no secrets logged, no required Discord channel for install, Discord bot messages ignored, player-list length configurable, and CPU/RAM/process stats explicitly scoped out.

Follow-up update

• Discord archive messages 6c9afe15-e96d-41d5-9dcd-d4135acc69b6 / 50d85d3d-9491-4a9a-90f3-e780d95888e1 / e93c0c4c-7b1b-4272-b5be-887e32e380ef asked for player-count/status updates on the same Discord message.
• Added updateStatusMessage config: scheduled status can now edit one persistent bot-authored Discord message via discordControllerUpdateMessage, falling back to posting/storing a replacement if the saved message was deleted or cannot be edited.
• Additional local verification: npm run build; focused discord-server-status test; node --check on updated component/helper files; module export conversion.

[koji-assistant]

CI update: Build and typecheck passed on head 1e65a6d, but Integration tests failed before module tests ran during Bootstrap Takaro stack because the shared image 967985385710.dkr.ecr.eu-west-3.amazonaws.com/takaro-app-api:latest is missing (manifest unknown: Requested image not found).

This matches the known shared CI bootstrap/ECR image blocker, not a module-code failure. Local checks still passed:

• npm run build
• focused pure helper tests for discord-server-status
• node --check on all module JS files
• module-to-json export shape check

Runtime/sandbox QA is still pending once the sandbox/CI image path is healthy.