{
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "$id": "https://tantrafiles.xyz/schema/edge.json",
 "title": "Lineage / relation edge",
 "description": "A directed, sourced relation. Two lineage families are first-class: dharma (teacher_of, ordained_by, dharma_heir_of, studied_with) and academic (academic_supervisor_of, edited, translated). Direction always reads src -> dst: src teacher_of dst.",
 "type": "object",
 "properties": {
  "type": {
   "const": "edge"
  },
  "id": {
   "type": "string",
   "description": "Deterministic: <src>~<type>~<dst> (slugs), so the same fact never gets two ids."
  },
  "src": {
   "$ref": "common.json#/$defs/gid"
  },
  "dst": {
   "$ref": "common.json#/$defs/gid"
  },
  "rel": {
   "type": "string",
   "enum": [
    "teacher_of",
    "studied_with",
    "ordained_by",
    "dharma_heir_of",
    "academic_supervisor_of",
    "influenced",
    "translated",
    "commented_on",
    "edited",
    "founded",
    "lineage_of",
    "member_of",
    "abbot_of",
    "teacher_at",
    "expounds",
    "parallels",
    "sister_of"
   ]
  },
  "lineage": {
   "type": "string",
   "enum": [
    "dharma",
    "academic",
    "influence",
    "institutional",
    "textual",
    "geographic"
   ]
  },
  "when": {
   "$ref": "common.json#/$defs/fuzzyTime"
  },
  "conf": {
   "type": "string",
   "enum": [
    "high",
    "medium",
    "low"
   ]
  },
  "basis": {
   "type": "string",
   "enum": [
    "documented",
    "scholarly",
    "traditional"
   ]
  },
  "contested": {
   "type": "string",
   "description": "Short note when disputed; shown with the edge."
  },
  "note": {
   "type": "string",
   "maxLength": 300
  },
  "sources": {
   "type": "array",
   "items": {
    "$ref": "common.json#/$defs/source"
   }
  },
  "meta": {
   "$ref": "common.json#/$defs/meta"
  }
 },
 "required": [
  "id",
  "type",
  "src",
  "dst",
  "rel",
  "lineage",
  "conf"
 ],
 "additionalProperties": true
}