feat(agent): align investigation reports and selected context

src/product/investigation-report.ts

@@ -0,0 +1,55 @@
+import { z } from "zod";
+
+const text = z.string().trim().min(1);
+export const investigationDiagramSchema = z.object({
+  title: text,
+  mermaid: text.max(20000).refine((source) =>
+    /^\s*(?:flowchart|graph)\s+(?:TD|TB|BT|LR|RL)\b/.test(source)
+    && !source.includes("```") && !source.includes("%%{") && !/(?:^|[;\n])\s*click\b/.test(source),
+  "调查图只接受不含指令或回调的 Mermaid 流程描述"),
+  node_refs: z.array(z.object({
+    node_id: z.string().regex(/^[A-Za-z_][A-Za-z0-9_-]{0,79}$/),
+    label: text,
+    evidence_refs: z.array(text).default([]),
+    action_refs: z.array(z.string().uuid()).default([]),
+  }).strict()).max(100).default([]),
+}).strict().superRefine((diagram, ctx) => {
+  if (new Set(diagram.node_refs.map((node) => node.node_id)).size !== diagram.node_refs.length) {
+    ctx.addIssue({ code: z.ZodIssueCode.custom, message: "调查图节点引用重复" });
+  }
+});
+const dataGapSchema = z.object({
+  gap_id: text,
+  node_id: text.nullish(),
+  missing_data: text,
+  scope: text,
+  impact: text,
+  required_data: text,
+  evidence_refs: z.array(text).min(1),
+  blocking: z.boolean()
+}).strict();
+
+/** New report writes require explicit business outcomes; storage reads remain compatible. */
+export const taskReportSchema = z.object({
+  title: text,
+  current_conclusion: text,
+  conclusion_boundary: text,
+  evidence_refs: z.array(text).default([]),
+  recommendations: z.array(text).default([]),
+  pending_items: z.array(text).default([]),
+  stage: z.enum(["interim", "final"]),
+  outcome: z.enum(["concluded", "insufficient_data"]),
+  stop_reason: text.nullable().default(null),
+  data_gaps: z.array(dataGapSchema),
+  diagram: investigationDiagramSchema.nullish(),
+}).strict().superRefine((report, ctx) => {
+  const invalid = (message: string) => ctx.addIssue({ code: z.ZodIssueCode.custom, message });
+  if (new Set(report.data_gaps.map((gap) => gap.gap_id)).size !== report.data_gaps.length) invalid("数据缺口编号重复");
+  const blocking = report.data_gaps.some((gap) => gap.blocking);
+  if (report.outcome === "insufficient_data") {
+    if (report.stage !== "final" || !report.stop_reason || !blocking) invalid("证据不足必须提供最终报告、结束原因和关键缺口");
+    if (report.recommendations.length || report.pending_items.length) invalid("证据不足退出后不再生成后续处置建议或待办");
+  } else if (report.stop_reason != null || blocking) invalid("已形成结论不能包含结束原因或阻塞缺口");
+});
+
+export type TaskReport = z.infer<typeof taskReportSchema>;