iOfficeAI/AionUi v2.1.2 on GitHub

Highlights

Refreshed the conversation header on desktop: model selector moved to the right, agent logo sits next to the title editor, and team chats now show a Peoples icon. Model selectors (ACP & Aion CLI) gained a dropdown chevron so they look and feel consistent.
Mobile experience is now noticeably more compact: tighter message bubbles (14px), shorter sendbox, ellipsis instead of marquee on the model pill, slimmer titlebar (no + button), and sidebar/history actions are always visible — no hover required.
WebUI users now see the "Work in project" footnote on the new conversation page and can attach a workspace to fresh conversations, just like the desktop app.

The desktop and WebUI boot flow now stops cleanly when the aioncore backend fails to start, instead of cascading into confusing __backendPort unset errors. A startup failure dialog with an optional diagnostic report is shown so problems are easier to triage.
Packaged builds no longer crash from EPIPE errors when console output is piped to closed stdout/stderr. File logging stays on so local diagnostics are unaffected.
Backend launch failures are now captured as dedicated Sentry events with stage, port, paths, and stdout/stderr tails so we can actually see what went wrong.

Fixed English text rendering with thin, hard-to-read weight on systems that have Inter installed — Arco's font stack is now overridden to use system fonts.
Fixed the bottom ~8px of the Base URL input in the "Add Custom Platform" modal not accepting clicks because the toggle below was overlapping it.
Switching conversations mid-upload now properly aborts the previous conversation's in-flight uploads, so you no longer see stray progress bars or thumbnails in the new conversation.
Fixed a renderer crash when filtering workspace @ mentions against malformed file entries.
ACP conversation hydration no longer surfaces backend Failed to fetch as an unhandled rejection; running/processing state resets cleanly when the local backend is temporarily unavailable.
Opening a stale (deleted) conversation no longer triggers an unhandled 404 promise rejection — the renderer treats it as a missing conversation while still surfacing real backend errors.

chore(docs): update WeChat group QR code to wx-9 by @IceyLiu in #3006
fix(guid): show workspace footnote in WebUI by @kaizhou-lab in #3005
fix(conversation): handle stale conversation lookups by @piorpua in #3009
fix(chat): handle backend fetch failures in acp hydration by @piorpua in #3015
fix(chat): guard workspace mention search fields by @piorpua in #3014
fix(startup): report backend launch failures by @piorpua in #3020
fix(styles): override Arco font-family to prevent Inter from rendering thin text by @ringringlin in #3013
fix(settings): unblock the bottom of the Base URL input in AddPlatformModal (ELECTRON-1K4) by @TCP404 in #3017
Handle backend startup failures by @piorpua in #3022
feat: conversation header polish (desktop & mobile) by @IceyLiu in #3021
Fix packaged console logging EPIPE crashes by @piorpua in #3023
fix(upload): abort in-flight uploads when switching conversations (ELECTRON-1K2) by @TCP404 in #3019
chore: bump version to 2.1.2 and aioncore to v0.1.11 by @piorpua in #3025

Full Changelog: v2.1.1...v2.1.2