Neo Origins

v2.0.25: fix escape immortality, config for new origins & orb XP cost

• Fix: escaping the starter origin screen no longer grants permanent immortality. pickerAbandoned is now persisted in the player data codec so the flag survives relog/restart.
• Config: skeleton, slime, and wraith origins can now be disabled via the [origins] config section like all other built-in origins.
• Config: new [orb_of_origins] section with levels_per_use setting. Set to 0 to disable the escalating XP cost entirely.
• Config: added power_overrides for all skeleton powers (speed, jump, brittle_frame, marksmanship, eat_bone_meal, evolved/ascended/apex).
• Config: added power_overrides for all slime powers (moisture drain rates, death_save thresholds, level_hp scaling, evolved/apex HP).
• Config: added exhaustion_per_tick overrides to all wraith phase tiers, plus wraith_apex_hunger_drain.