-- XP curve: early nonlinear cadence (~100 / ~150 / ~225 XP for L1–3 with 1 XP per kill),
-- mid/late continuity. Loot: slightly higher gold/equipment roll generosity.
-- Enemy xp_reward: normal 1, elite 3 (per-level XP ramps from instance level 10+ in code).

UPDATE public.runtime_config
SET payload = payload || jsonb_build_object(
    'xpCurveEarlyBase', 100,
    'xpCurveEarlyScale', 1.5,
    'xpCurveMidBase', 2947,
    'xpCurveMidScale', 1.15,
    'xpCurveLateBase', 48232,
    'xpCurveLateScale', 1.10,
    'goldLootScale', 0.62,
    'equipmentDropBase', 0.2,
    'goldDropChance', 0.92,
    'potionDropChance', 0.06
),
    updated_at = now()
WHERE id = true;