Releasesv0.20.0
v0.20.0 — Chimera Desktop app
This is the release note as published, not a rewrite of it. Release notes are published in the language they were written in.
Chimera now has a desktop app — a local web UI (React + TypeScript + Tailwind) that talks to the Python core over HTTP + Server-Sent Events. No Electron, no cloud, no CORS: chimera app serves the built UI and the API together on 127.0.0.1.
Added
pip install 'chimera-agent[desktop]'+chimera app— starts the API + UI and opens your browser.- Streaming chat.
POST /api/chat/streamemitstoken/tool/doneSSE events by bridging the existingChatSession.send_verbosecallbacks — the real agent stack, unchanged. Under--fuseit degrades to a final-answer event (no fake cursor). - A three-pane chat UI mirroring the TUI: a Markdown transcript with syntax-highlighted code, a live token buffer, and an activity sidebar fed by real per-turn signals only — tools called (✓/✗), tokens in/out + cache,
~ $cost(or "unavailable"), and memory facts recalled + which layer. Nothing fabricated. - Persisted sessions — a conversation list that survives restarts (
GET/POST/DELETE /api/sessions), stored atomically under<home>/sessions/. - The bearer token (
CHIMERA_SERVER_TOKEN) guards the mutating endpoints; the core CLI and stdlib messaging gateway are untouched. The frontend lives inapps/desktop(built assets are served same-origin).
Settings / Memory / Skills / Cron / Tasks screens land next (Fase B/C); a native Tauri installer is the optional Fase D.
Built and smoke-tested end to end against a real model. Gate: 1473 passed / 4 skipped, mypy + ruff green.
Upgrade: `pip install --upgrade 'chimera-agent[desktop]'` then `npm --prefix apps/desktop install && npm --prefix apps/desktop run build && chimera app`