[Feat] Support automatic Discord forum tags

[mrubens]

Opened on behalf of Matt Rubens. View the task or mention @roomote-roomote for follow-up asks.

Related issue

N/A — internal follow-up on automatic Discord forum tag support.

Why this PR exists

• A maintainer explicitly invited this PR in the linked issue or discussion
• I am a maintainer / this is internal Roomote work

What changed

Tasks can launch in Discord forum and media channels that require tags. When a forum needs a tag, Roomote uses the small router to pick the best available unmoderated tag from the task description, then falls back deterministically if routing fails or returns an invalid id.

Forums that only expose moderated tags are no longer treated as freely usable: destination setup and automatic posting now require the Discord Manage Threads permission before applying a moderated tag. Empty required-tag forums remain unsupported with a clearer destination picker message.

Setup and install guidance now match that rule: the Add to Discord install link requests Manage Threads, and setup/docs copy explain when it is required.

How it was tested

• Vitest: Discord provider, API Discord launch + automation delivery, forum-tag router, web comms commands, setup instructions
• Docs check for the Discord page
• Pre-push gate on push: oxlint, residual lint, fast type checks, knip

Checklist

• The PR title follows the repo convention: [Fix], [Feat], [Improve], [Refactor], [Docs], or [Chore] followed by a user-facing description
• This PR is small and scoped to one change
• pnpm lint and pnpm check-types pass locally
• I added tests or included a clear manual validation note above
• I removed secrets, tokens, private keys, and customer data from code, logs, and screenshots
• If this change should appear in the changelog, I ran pnpm changeset

[roomote-roomote]

No new code issues found. See task

• packages/communication/src/discord-provider.ts:1217 Moderator-only required tags are treated as usable without checking MANAGE_THREADS. A forum containing only moderated tags passes destination setup, but posting applies that tag and Discord rejects it unless the bot has MANAGE_THREADS. Require that permission for this fallback or mark such destinations unavailable.

_{Reviewed 91bc517}

[mrubens]

@roomote-roomote resolve conflicts and address feedback

[roomote-roomote]

I'm on it. I started a dedicated PR follow-up task for this request, and I'll keep updates here. See task

[roomote-roomote]

Resolved merge conflicts, gated moderated-only required-tag forums on Manage Threads, and updated install permissions plus setup/docs health copy so they match. See task

Latest: dd3000b. Revert this commit

[mrubens]

@roomote-roomote resolve conflicts

[roomote-roomote]

I'm on it. I started a dedicated PR follow-up task for this request, and I'll keep updates here. See task

[roomote-roomote]

Resolved merge conflicts with develop in the Discord task-launch tests (kept forum-tag mocks + provisional-title dbLimit setup from #541). Pre-push checks passed. See task

Latest: 91bc517. Revert this commit