fix: 完善动态错误指引与发票日期校验（09-05-error-explainability-payment-readiness）

client/src/api/errorMessages.ts

@@ -77,6 +77,30 @@ export function mapApiErrorMessage(
     return mapApiErrorMessage(code, { ...details, reasonCode: undefined, items: "invoice_item_guard_failed" });
   }
   if (code === "VALID_001" && details?.reasonCode !== undefined) {
+    if (details.reasonCode === "invoice_pool.ocr_fields_missing") {
+      const missingFields = readStringList(details.missingFields).filter((field) =>
+        ["invoiceCode", "invoiceNumber", "invoiceDate", "totalAmount", "sellerName"].includes(field));
+      if (missingFields.length) {
+        return mapApiErrorMessage(code, { ocr: "missing_required_fields", missingFields });
+      }
+    }
+    if (details.reasonCode === "workflow.remind_cooldown") {
+      const nextAllowedAt = details.nextAllowedAt;
+      if (typeof nextAllowedAt === "string"
+        && /^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}(?:\.\d+)?Z$/.test(nextAllowedAt)
+        && Number.isFinite(new Date(nextAllowedAt).getTime())) {
+        return mapApiErrorMessage(code, { workflow: "remind_too_frequent", nextAllowedAt });
+      }
+    }
+    if (details.reasonCode === "auth.password_policy_failed") {
+      const password = readStringList(details.password).filter((rule) => [
+        "密码长度必须 ≥ 12", "密码必须包含小写字母", "密码必须包含大写字母",
+        "密码必须包含数字", "密码过于常见/弱",
+      ].includes(rule));
+      if (password.length) {
+        return mapApiErrorMessage(code, { password });
+      }
+    }
     return resolveErrorReasonMessage(details.reasonCode) ?? UNKNOWN_VALIDATION_MESSAGE;
   }
   if (code === "AUTH_001") {