#2049 feat(probe): deliver Relay messages to agents in the Cursor editor

Summary

• The core now delivers Relay messages to agents in the Cursor editor, not only Cursor CLI, and wakes an idle agent when one arrives. Ported from relay-desktop 1b2856ce and 6d8ab4fc, core parts only.
• relay init sets Cursor up: MCP config in ~/.cursor/mcp.json, delivery hooks in ~/.cursor/hooks.json, and the skill. relay init --uninstall removes only what init added.
• PROBE_VERSION stays 15.0.7 here. The editor route needs the next core release, so the pin bumps at release. Until then Cursor gets the existing CLI route.

Left out: Cursor Cloud sync and the relayhistory 0.54.1 bump (a separate PR), GTK and Swift changes, and process/snapshot.rs (relay has no ProcessSnapshot). No routing or key-origin code is touched.

Test Plan

• Tests added/updated: editor routing, idle wake, hook settings, relay init delivery, uninstall, and a core refusing the setting
• Manual testing completed: not done yet. A live Cursor editor test, including waking an idle agent, must pass before merge

crates/probe, before rebasing onto the 15.0.2 release: default features 3555 passed, 2 failed; --no-default-features 2779 passed, 1 failed. All three failures also happen on clean main at 7d01906dc: two history_flush timing checks and relay_core_binary::the_binary_serves_answers_calls_and_stops_with_its_host. CLI package: 2667 passed, 0 failed; after final formatting only agent-tools-mcp.test.ts was rerun, 132 passed. All of this used fake cores; a real relay init hasn't been run, and Cursor detection hasn't been checked against a real install.

RelayFlow Proof

No case declared, as with recent feat PRs #2037, #2017 and #2006. A live Cursor session can't run in CI.

Screenshots

n/a

🤖 Generated with Claude Code

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Agent Relay sessions

• claude session a994d8be · opened via gh pr create · last active 2026-11-01