Port located team radio and formatter state

RE-1039. Focused validation: cargo xtask test-group rust-location-radio. Machine report.

Rust composes nearest selection, bounded location text, team routing and the recovered ring formatter across35 source scenarios. Ring state wraps per recipient and149-byte clipping matches source warnings. Sender admission bypasses unused geometry; radio/marker/ring updates stage atomically. Tests cover long text, per-recipient ring advancement and inactive/error preservation. Engine box/PVS and sending remain external.