Add daemon RPCs, Apple and GTK import flows, packet proxy runtime support, diagnostics, and BEPs for proxy subscription handling.
Redact subscription URL secrets from fetch errors before they reach logs or UI surfaces.
Add the GTK home screen, local account store, daemon gRPC wrapper, and embedded Linux daemon startup path so the Linux app follows the Apple client UX and daemon boundary.
Document the GTK parity expectations and update the daemon IPC and Tailnet BEPs with the cross-platform client model.
