A Windows desktop client for ACP agents that keeps the process visible: thinking and tool calls live in a trace swimlane, not buried in the chat stream.
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Several CLI agents, group members and their sessions sit on a single timeline. Mention a member with
@ and it runs on its own branch in parallel, then merges back into the trunk — no more
copying context between terminal windows, and one place to review what each of them did.
Replies stay in the chat; thinking, tool calls and permission prompts go into a trace panel. The two cross-link by anchor, so "why did it do that" always has an answer.
Sessions, traces and settings live in %APPDATA%\com.sincearc.app. Nothing is uploaded, and the client works fully without an account.
Bring PRs, issues and reviews into the same window, with agents taking part in them over ACP.