Froglet v0.4.5 public beta

Froglet public beta v0.4.5 keeps native publishing from attempting legacy marketplace registration with a loopback HTTP address. A publisher now waits for an approved public transport (or uses an explicitly configured public HTTPS origin); exact publication approval and signed protocol artifacts are unchanged.

Validation: full public repository checks, locked dependency audit, website tests and build, macOS release packaging and installer smoke, and a loopback-only startup smoke against the production marketplace. The stable release label remains gated on the full clean-machine, agent, and first-time-user qualification.