iOfficeAI/AionUi v1.9.21 on GitHub

Highlights

Replaced the unreliable 15-second idle fallback with a proper process-exit handler and a ping/pong heartbeat protocol — long tool executions no longer trigger fake "finish" events, and truly stuck processes are now detected and recovered deterministically.
Fixed a crash when tool commands contained non-ASCII characters (e.g. Chinese): UTF-8 safe truncation now prevents the aionrs process from panicking mid-session.
Aligned max turn behavior with Claude Code — the main agent now runs unlimited turns by default (configurable), sub-agents allow up to 200 turns, and hitting the limit is treated as a graceful stop instead of an error. Team collaboration sessions no longer dead-end at 30 turns.
Added diagnostic logging when autocompact is skipped, making it easier to understand why context management didn't trigger.

Fixed attachment previews and metadata reads that were pointing to fake workspace paths — real absolute paths are now preserved in message markers.
Binary attachments in ACP sessions are kept as file references instead of being inlined as garbled UTF-8 into the prompt, avoiding prompt pollution and model confusion.

Weixin assistant text drafts are now flushed before silent tool, status, and plan events — preserving the correct message order during streaming. ACP and Codex tool-only turns also now complete cleanly in the WeChat channel.

Fixed agent-switch failure on the guid page for built-in preset assistants (e.g. "Morph PPT") — the switcher now searches both assistants and acp.customAgents storage.
Fixed the aionrs channel send path to use the correct { content, msg_id } payload; Gemini keeps its existing { input, msg_id } contract.
Fixed broken quick-navigation links in all 9 non-English READMEs (Chinese, Japanese, Korean, Spanish, Portuguese, Russian, Turkish, Traditional Chinese, Ukrainian) — they now render as clickable links on GitHub.

fix(docs): add missing blank line in quick navigation for non-English READMEs by @IceyLiu in #2627
fix(guid): search both storage sources when switching preset agent type by @piorpua in #2633
fix(channels): send content payload for aionrs by @piorpua in #2637
fix(attachments): avoid fake paths and binary prompt injection by @piorpua in #2634
fix(weixin): flush assistant text before silent events by @JerryLiu369 in #2638
chore: bump version to 1.9.21 by @piorpua in #2649
fix(aionrs): replace idle fake-finish with process exit error and heartbeat by @piorpua in #2650

0.1.15 (2026-04-24) — Added ping/pong heartbeat protocol support (#68)
0.1.14 (2026-04-23) — Aligned maxTurns logic with Claude Code (#66); fixed UTF-8 panic in tool describe and added autocompact skip logging (#63)

Full Changelog: v1.9.20...v1.9.21