EPIC: release train 0.70.2 #4678

Train epic for 0.70.2 (operator rulings C297 and C298; brief: cop-inbox handoff/0702-brief.md).

0.70.2 is the emergency train for the build delay. Its tickets carry a bar or an exit criterion of the brief and are P0 under this epic (C297 §4). The rows come from aprender-a7's PROPOSE-TICKET list (handoff/0702-propose-tickets.md, T1-T17) and the BLD-002 R12 list (handoff/bld-002-r12-propose-tickets.md).

Sizing: ΣK̂ = 52 h; K = 1.15 × ΣK̂ = 59.8 h; andon at 0.8 K = 47.8 h.

Owner: aprender-a7 (workers aprender-a7w, aprender-a7n). Minted by the cop's clerk.