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92c2e2ffc0
The app aborted on every macOS and Linux launch. `ipc::start` runs synchronously from Tauri's `setup` hook, on the main thread with no Tokio runtime in context, and called `tokio::net::UnixListener::from_std` there. That call registers the socket with the reactor, so it panicked with "there is no reactor running" — and because `setup` runs inside tao's `did_finish_launching`, a non-unwinding ObjC callback, the panic escalated to `panic_cannot_unwind` and killed the process before a window ever appeared. Bind the socket synchronously as before (so stale-socket and permission failures still surface as a returned error), then hand the std listener to `spawn_serving`, which converts it inside the spawned task where the reactor is live. Socket cleanup on a failed conversion matches the existing accept error path. Covered by a unit test that calls `spawn_serving` from a plain sync context, exactly as `setup` does, and asserts the socket still accepts a connection; it reproduces the original panic when the conversion moves back to the call site. Verified with `just staging`: the app now boots past `did_finish_launching`, creates `CANVASES/.runtime/agent-updates.sock` with 0600 permissions, and reaches the frontend. Full Tauri test suite (3031), clippy, fmt, and the file-size gate pass. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Signed-off-by: Matt Toohey <contact@matttoohey.com>