Resolve team radio location and source formatting chain

RE-1038. Focused validation: cargo xtask test-group qvm-location-radio. Machine report.

Thirty-five source scenarios execute radio with actual location selection/text and bounded/ring formatter bodies. Commands now derive from cache/trigger/PVS results rather than supplied text responses. Missing locations become empty text through the original caller path. Ring state advances per recipient, quoted bytes remain unchanged, and a160-byte label clips to149 with a warning. Engine box/PVS and native send remain explicit boundaries.