ACP mode doesn't advertise model selector, session modes, or token usage — all present in the TUI but missing over ACP

[sergiomeneses]

Environment

jcode version: jcode v0.67.1 (88a19f3)
OS: Windows 10.0.19045, Zed running natively on Windows, project + jcode binary both in WSL2 (Ubuntu)
Zed: v1.13.2+stable.335.5cdb7ab9d9546db683132cfa78e68acec3064cac (Zed)
Connected via Zed's native Remote WSL (projects: open in wsl)

Description

When using jcode as a Zed External Agent via jcode acp, the Agent Panel shows none of:

• Model selector
• Mode selector (jcode's plan/code modes)
• Effort selector
• Token usage display

These all depend on the agent advertising the corresponding ACP capabilities during initialize (Zed populates AgentModelSelector/AgentSessionModes UI purely from what the agent reports). jcode acp --help also has no --mode or --effort flag, only -m/--model, suggesting mode/effort switching hasn't been wired into the ACP surface yet — these exist today only as TUI slash commands (/model, etc.).

Expected behavior

Given jcode's TUI already supports model switching, plan/code modes, and effort levels, it would be great to see these surfaced over ACP too — as session/new/session/load response capabilities plus session/set_model / session/set_mode support, and token usage in session/update notifications, so Zed (and other ACP clients) can expose them natively.

Note

This may be intentional/scoped-out for now — filing per your invitation in the ACP PR to open targeted issues for capability gaps.