{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "schema://yams/card_anchor_v1",
  "title": "Card Anchor v1 — Stable code/content anchors",
  "type": "object",
  "properties": {
    "repo_path": { "type": "string" },
    "blob_sha256": { "type": "string", "pattern": "^[a-fA-F0-9]{64}$" },
    "language": { "type": "string" },
    "start_line": { "type": "integer", "minimum": 1 },
    "end_line": { "type": "integer", "minimum": 1 },
    "start_byte": { "type": "integer", "minimum": 0 },
    "end_byte": { "type": "integer", "minimum": 0 },
    "pre_context": { "type": "string", "description": "hash of N lines before" },
    "post_context": { "type": "string", "description": "hash of N lines after" }
  },
  "required": ["repo_path", "blob_sha256"],
  "additionalProperties": true,
  "anyOf": [
    { "required": ["start_line", "end_line"] },
    { "required": ["start_byte", "end_byte"] }
  ]
}