{
  "_readme": [
    "Tuning for Skill Trees (docs/wiki/progression/skill-trees.md).",
    "Owner-edited. null = undecided. Entries marked illustrative:true are",
    "V1-derived placeholders for shape, not commitments. Node catalogs per",
    "tree land in the owner's content pass."
  ],
  "points": {
    "per_level": 1,
    "milestone_bundles": { "every": 10, "bonus_points": null },
    "note": "every level grants per_level points to that skill's tree; round levels grant an extra bundle (D-SKILL-TREES-05)"
  },
  "respec": {
    "refund_fraction": 0.5,
    "coin_fee": { "base": null, "escalation": "escalating per respec — shape TBD" },
    "note": "V1 default refund carried over; full respec incl. branch choices (D-SKILL-TREES-04)"
  },
  "eternal_nodes": {
    "cost_scaling_per_purchase": 1.10,
    "base_cost": { "life_essence": null, "points": null },
    "note": "one per tree, open on reach (D-SKILL-TREES-06); V1 default scaling; per-bonus plateau shapes TBD"
  },
  "branches": {
    "melee": { "options": ["swords", "daggers", "axes", "blunt", "unarmed", "polearms"], "illustrative": true },
    "ranged": { "options": ["archery", "artillery"], "illustrative": true },
    "magic": { "options": null, "note": "no ability engine yet — branch set TBD with the probe" },
    "mining": { "options": ["prospector", "excavator"], "note": "old spec pair becomes the branch pair", "illustrative": true },
    "_other_trees": "branch catalogs land in the owner content pass"
  }
}