Nick Vigilante 8afd0020ea docs: fix chat status names and auto-archive behavior claims (#28570)
Two Coder Agents pages describe chat statuses that no longer exist and
attribute auto-archive to the wrong subsystem. The valid status set is
`waiting`, `running`, `error`, `requires_action`, `interrupting`.

- `architecture.md`: a submitted prompt marks the chat `running`, not
`pending`; there is no queued state.
- `chat-auto-archive.md`: the excluded status set is `running`,
`interrupting`, `requires_action`.
- `chat-auto-archive.md`: the job runs in the chatd chat worker on an
hourly tick, not in `dbpurge`.
- `chat-auto-archive.md`: documents the dashboard control at **AI
Settings** > **Coder Agents** > **Lifecycle**, and the 25-title cap on
the digest notification.

API paths on the auto-archive page are intentionally untouched; a
separate PR fixes the `/api/v2` to `/api/experimental` drift.

Linear: DOCS-722 https://linear.app/codercom/issue/DOCS-722

<details><summary>Analysis evidence</summary>

- `codersdk/chats.go`: `ChatStatus` constants are `waiting`, `running`,
`error`, `requires_action`, `interrupting`. No `pending`, `paused`, or
`completed`.
- `coderd/x/chatd/chatstate/transitions.go`:
`sendMessageQueueAndSetStatus` and the send paths apply
`database.ChatStatusRunning`, so a submitted prompt is `running`
immediately. `docs/ai-coder/agents/tasks-to-chats-migration.md` already
states that chats have no separate queued state.
- `coderd/database/queries/chats.sql`,
`GetAutoArchiveInactiveChatCandidates`: `status NOT IN ('running',
'interrupting', 'requires_action')`, plus `archived = false`, `pin_order
= 0`, `parent_chat_id IS NULL`.
- `coderd/x/chatd/auto_archive.go`: `archiveLoop` runs from
`coderd/x/chatd/worker.go` on `opts.ArchiveInterval`;
`coderd/x/chatd/options.go` sets `defaultArchiveInterval = time.Hour`.
Nothing in `dbpurge` performs chat auto-archive.
- `coderd/x/chatd/auto_archive.go`: `chatAutoArchiveDigestMaxChats =
25`; `buildAutoArchiveDigestData` truncates to 25 titles and reports the
remainder as `additional_archived_count`.
- `coderd/x/chatd/options.go`: `defaultArchiveBatchSize = int32(1000)`,
so the existing "up to 1,000 root chats" claim stands.
- `site/src/pages/AISettingsPage/LifecyclePage/LifecyclePageView.tsx`
mounts `AutoArchiveSettings`;
`site/src/modules/management/AISettingsSidebarView.tsx` places the
Lifecycle sub-nav item under Coder Agents.

Validation: `pnpm run format-docs` (no changes) and `pnpm run lint-docs`
(0 errors).

</details>

Generated by Coder Agents on behalf of @nickvigilante.
2026-08-26 11:36:36 -04:00
2022-04-04 11:55:06 -05:00

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