Summary

Bump agent-client-protocol from 0.10.2 → 0.10.3 and agent-client-protocol-schema from 0.11.2 → 0.11.4. These releases introduce new stable functionality required for full Zed IDE compatibility.

Changes in 0.10.3 / schema 0.11.3

• (unstable) logout support — new logout method capability; enables IDE-side session termination flows
• Schema bump to 0.11.3

Changes in schema 0.11.1–0.11.4 not yet reflected in Zeph

• v0.11.1: session/list and session_info_update stabilized — Zeph's list_sessions implementation should remove the unstable-session-list guard if it exists
• v0.11.3: elicitation method added — structured interactive prompts from agent to IDE (e.g., ask user for input, confirmation, file selection). Required for supervised permission flows in Zed.
• v0.11.3: logout method capability
• v0.11.4: NES (Nested Environment Support) initial implementation — enables sub-agent workspace isolation. Relevant to zeph-acp subagent dispatch.
• v0.11.4: additional_directories support — IDE can declare extra directories accessible to the agent beyond the workspace root

Why This Matters for Zed Compatibility

Zed tracks agent-client-protocol closely. If Zed ships support for elicitation (user input prompts) or NES and Zeph does not implement these, Zeph will appear as a degraded agent in the Zed agent panel.

Implementation Tasks

1. Bump agent-client-protocol to 0.10.3 in Cargo.toml
2. Verify no breaking changes in 0.10.3 (review: adds logout, schema bump only)
3. Implement elicitation handler in zeph-acp/src/agent/mod.rs
4. Implement logout capability in capabilities advertisement
5. Review session/list stabilization — confirm no feature flag needed
6. Track NES and additional_directories (may need separate issues once spec stabilizes)
7. Update /.well-known/acp.json discovery endpoint protocol version (currently hardcodes "0.9", should match crate version)

Related

• fix(skills): wire two_stage_matching and confusability_threshold at startup; migrate legacy bundled skills #2410 (discovery endpoint protocol version stale)
• Zed ACP first-class compatibility playbook: .local/testing/playbooks/acp-compatibility.md