Files
learnharness/app/api/chats/route.ts
T
amosblomqvist 3e9a85d60f per-session models: every session owns its model + thinking level from birth
The reported bug (2026-09-28): every chat ran glm-5.3-flash regardless of
any pick, while composer and settings UIs agreed with each other and lied
about the run. Root cause: a fossil default-settings record (settings.json
chat section, frozen pre-slots-wave) was stamped verbatim into every new
chat at birth by the new-session flow, and resolveConversationSpec prefers
the per-chat record over the strong slot forever.

Owner redesign — models are per session, always; the strong slot is the
new-session default:

- POST /api/chats stamps the newborn verbatim from the strong slot
  (model + thinking level); no client settings PUT on create anymore
- the composer control is dual-bound: in-session it reads/writes the
  session's own record (GET /api/chats/:id, PUT .../settings); on the
  draft surfaces it binds the strong slot (picking there = changing the
  default)
- thinking levels follow the identical mechanics (confirmed by owner)
- the zombie default-settings system dies whole: useDefaultSettings,
  /api/settings/defaults, src/store/default-settings.ts, the chat
  section of UserSettings (sanitizer strips fossil copies), the legacy
  default-settings.json fold, and DEFAULT_SETTINGS_FILE
- catalogDefaultsFor collapses to the strong slot alone
- thinking display for a legacy unstamped session resolves exactly like
  the engine (session ?? strong ?? model ladder)

Tests: new chat-birth-stamp suite pins the stamp, the unconfigured boot,
the unset level, and the copy-not-live-view regression; defaults pins
rewritten strong-only; legacy-migration suite deleted.
2026-09-28 23:30:11 +03:00

39 lines
1.8 KiB
TypeScript

import { createChat, isTurnRunning, listChats, readSettingsRecord, stores, titleFromPrompt } from "@/src/server";
import type { ChatListItem } from "@/src/core";
/** The session picker's list: record-derived summaries (phase, pending
* question) + live liveness — a running turn marks the session busy
* (contracts.ts ChatListItem; the store can't see liveness, the route is
* the merge point). Owner, minimal-color round: background jobs NO LONGER
* count — the sidebar's Background agents section is their channel now
* (a running spinner per row would double-signal them), so busy means
* exactly "a teach turn is in flight". */
export async function GET() {
const chats: ChatListItem[] = listChats().map((c) => ({
...c,
busy: isTurnRunning(c.id),
}));
return Response.json({ chats });
}
export async function POST(req: Request) {
const body = (await req.json().catch(() => ({}))) as { title?: unknown };
const title = typeof body.title === "string" ? body.title : "";
const chat = createChat(titleFromPrompt(title || "Untitled session"));
// PER-SESSION MODELS (owner, 2026-09-28): a session owns its model +
// thinking level from birth — stamped verbatim from the STRONG slot,
// the new-session default. From here the strong slot never reaches
// this session again: in-session picks write the session's own record
// (PUT /api/chats/:id/settings). No strong slot configured (fresh BYOK
// boot) → no stamp; the turn gate's 503 models_not_configured envelope
// refuses honestly until the setup flow fills the slot.
const strong = readSettingsRecord()?.models?.strong;
if (strong?.model) {
stores.chatStore.saveSettings(chat.id, {
model: { provider: strong.model.provider, id: strong.model.id },
thinkingLevel: strong.thinkingLevel,
});
}
return Response.json({ id: chat.id, title: chat.title });
}