test(grid): action-map consistency invariant accounts for no-move interact action

test(template): restore generic eliminated-outcome + blocked step_reward coverage

refactor(scenario): delete predator_evade; template is the canonical scenario

refactor(scenario): rename pack_evade -> template

feat(pack_evade): 2x2 focal, 3x3 open-mouth predator, gap-2, predator-first

refactor: restructure proteus into game/web subpackages

feat(pack_evade): observational food cells (near focal + behind predator) + wall/food prompt

feat(pack_evade): describe walls in observation + expose wall_rects()

feat(pack_evade): wall-aware predator/optimal/persona BFS + '#' legend

feat(pack_evade): seeded wall blocks + focal-only narrow channels

feat(scenario): render_frame hook — compact pack_evade obs, predator_evade unchanged

feat(engine): footprint-aware focal bounds (1x1 unchanged)

test(pack_evade): pin optimal/chase/reward/no-diagnostic behaviour

feat(pack_evade): 64x64 multi-cell scenario — build, footprint eat, center-Manhattan

feat(cp8): scenario max_bfs_distance + agent_distance_delta helpers

chore(cp6): holistic-review cleanup — drop dead EASY start consts, de-8x8 docstring, ABC-faithful test stubs

feat(cp6): scenario-owned survival step_reward (away-from-predator) + safety_distance

test(cp6): lock optimal!=habit handover invariant for all difficulty bands

feat(cp6): per-difficulty hand-authored predator_evade layouts (EASY unchanged)

feat(cp6): Scenario.build_level takes difficulty + record_focal_move/safety_distance defaults

test(cp1): pin EASY pre-roll length so the diagnostic gate can't pass vacuously

test(cp1): lock determinism + handover diagnostic invariant

feat(cp1): port predator_evade + wire scenario registry

feat(cp1): port ascii_view into proteus.grid

feat(cp1): port MotiveGridGame turn loop into proteus.grid

test(cp1): make duplicate-registration test self-contained (order-independent)

feat(cp1): port Scenario ABC + registry into proteus.grid

feat(cp1): port Difficulty enum into proteus.grid