fix(web): narrow natal-minute consultation mode for the production build

BUG-341 added declared_birth_window, but the natal-minute helper still returned boolean, so next build could not pass that mode into serverChartFromProfile.

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/src/lib/consultation-birth-time-mode.ts

@@ -12,10 +12,16 @@ export const consultationBirthTimeModeSchema = z.enum([
 ]);
 
 export type ConsultationBirthTimeMode = z.infer<typeof consultationBirthTimeModeSchema>;
+export type NatalMinuteConsultationMode = Extract<
+  ConsultationBirthTimeMode,
+  "verified_chart" | "unverified_birth_time"
+>;
 
 export const UNVERIFIED_BIRTH_TIME_NOTICE = "使用未校正填报时间；分钟敏感结论的置信度已降低。";
 
-export function isNatalMinuteConsultationMode(mode: ConsultationBirthTimeMode): boolean {
+export function isNatalMinuteConsultationMode(
+  mode: ConsultationBirthTimeMode,
+): mode is NatalMinuteConsultationMode {
   return mode === "verified_chart" || mode === "unverified_birth_time";
 }
 

frontend/tests/consultation-birth-time-mode.test.ts

@@ -13,6 +13,11 @@ import { getGeneralJyotishAgent } from "../src/mastra/index.ts";
 import type { ResolvedLanguageModel } from "../src/mastra/model.ts";
 
 test("general-no-birth-time is an explicit server mode that never runs a chart workflow", () => {
+  const source = readFileSync(new URL("../src/lib/consultation-birth-time-mode.ts", import.meta.url), "utf8");
+  assert.match(
+    source,
+    /export function isNatalMinuteConsultationMode\(\s*mode: ConsultationBirthTimeMode,\s*\): mode is NatalMinuteConsultationMode/,
+  );
   assert.equal(consultationBirthTimeModeSchema.safeParse("verified_chart").success, true);
   assert.equal(consultationBirthTimeModeSchema.safeParse("unverified_birth_time").success, true);
   assert.equal(consultationBirthTimeModeSchema.safeParse("declared_birth_window").success, true);