{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "aps://shared/ui_block",
  "title": "UIBlock",
  "description": "UI 块：后端/LLM 与前端之间的渲染契约（plan.md §6.2）。M1 实现 text 与 confirm-card 两种。",
  "type": "object",
  "required": ["blockId", "type", "props"],
  "properties": {
    "interfaceVersion": { "description": "跨层契约版本", "type": "string", "const": "1.0", "default": "1.0" },
    "blockId": { "description": "块唯一 ID", "type": "string" },
    "type": {
      "description": "块类型（M2 子集；后续按 §6.2 扩展 gantt/due-board 等）",
      "type": "string",
      "enum": [
        "text", "confirm-card", "evidence", "scenario-cards", "report",
        "flex-schedule", "flex-capacity", "flex-due", "flex-compare",
        "plan-trace", "conflict-center", "kpi-dashboard", "compare-table",
        "guidance", "readiness", "clarify", "wizard", "folder-pack", "project-analyze", "drawing-analysis"
      ]
    },
    "props": { "description": "该块的数据载荷", "type": "object" },
    "actions": {
      "description": "块内可触发的动作（回传给后端）",
      "type": "array",
      "items": {
        "type": "object",
        "required": ["actionId", "label", "power"],
        "properties": {
          "actionId": { "description": "动作 ID", "type": "string" },
          "label": { "description": "按钮文案", "type": "string" },
          "power": { "description": "权力等级（P2/P3 须过门禁）", "type": "string", "enum": ["P0", "P1", "P2", "P3"] },
          "payload": { "description": "携带参数", "type": "object" }
        }
      }
    },
    "evidenceRefs": { "description": "关联证据 ID 列表", "type": "array", "items": { "type": "string" } }
  }
}