Benchmarks: shipped-artifact live per-source results + savings column

Model card: rewrite for legibility; benchmarks = DeepSWE 6-seed results

v1.2-traffic: README.md

v1.2-traffic: router.npz

v1.2-traffic: router.json

v1.1 live-cell rebuild: README.md

v1.1 live-cell rebuild: router.npz

v1.1 live-cell rebuild: router.json

Trained default: EXP-012 reward_lcb_b0.2 (tuned fp16 + tuned 4-bit MLX)

Default routing artifact: README.md

Default routing artifact: router.npz

Default routing artifact: router.json

initial commit