fix(web): 四个页面共用一份会话列表，空会话不入列

对话、星盘、星历、报告进同一 (app) 外壳，列表只拉一次。服务端不再列出空咨询；新建复用已有空会话。新标题改成「生时校正 · M月D日」，侧栏副标题用创建时间。

frontend/src/lib/agent-reply.ts

@@ -5,6 +5,7 @@ import {
   isGeneralDailyFortuneQuestion,
   isRectificationHandoffQuestion,
 } from "./consultation-entrypoint.ts";
+import { shanghaiDateParts } from "./session-shanghai-clock.ts";
 
 export type ReplyTheme = ConsultationDomain;
 
@@ -64,10 +65,14 @@ export type SessionTitleOptions = {
   readonly existingTitles?: readonly string[];
 };
 
+const DATED_CATEGORY_PREFIX = /^(?:生时校正|今日节奏)\s*·\s*\d{1,2}月\d{1,2}日/;
+const DATED_CATEGORY_SUFFIX = /^\d{1,2}月\d{1,2}日\s*·\s*(?:生时校正|今日节奏)(?:\s+\d{2}:\d{2})?$/;
+
 export function isGenericSessionTitle(title: string): boolean {
   const text = title.replace(/\s+/g, " ").trim();
   if (!text) return true;
   if (GENERIC_SESSION_TITLES.has(text)) return true;
+  if (DATED_CATEGORY_PREFIX.test(text) || DATED_CATEGORY_SUFFIX.test(text)) return true;
   return /^(?:深入看今日|从今日问起|查看今日运势|生时校正|再次校正)/.test(text);
 }
 
@@ -76,15 +81,9 @@ function clipTitle(value: string, maxChars = 14): string {
   return characters.length > maxChars ? `${characters.slice(0, maxChars).join("")}…` : value;
 }
 
-function datedSessionTitle(at: Date, suffix: string): string {
-  return `${at.getMonth() + 1}月${at.getDate()}日 · ${suffix}`;
-}
-
-function uniquifySessionTitle(title: string, existingTitles: readonly string[], at: Date): string {
-  if (!existingTitles.includes(title)) return title;
-  const hours = String(at.getHours()).padStart(2, "0");
-  const minutes = String(at.getMinutes()).padStart(2, "0");
-  return `${title} ${hours}:${minutes}`;
+function datedSessionTitle(at: Date, category: string): string {
+  const { month, day } = shanghaiDateParts(at);
+  return `${category} · ${month}月${day}日`;
 }
 
 export function resolveSessionTitle(
@@ -93,21 +92,20 @@ export function resolveSessionTitle(
   options: SessionTitleOptions = {},
 ): string {
   const at = options.at ?? new Date(); // new sessions only; see SessionTitleOptions.at
-  const existingTitles = options.existingTitles ?? [];
   if (modelTitle && !isGenericSessionTitle(modelTitle)) {
-    return uniquifySessionTitle(clipTitle(modelTitle), existingTitles, at);
+    return clipTitle(modelTitle);
   }
   if (options.entrypoint === "daily_starlanguage" || isGeneralDailyFortuneQuestion(question)) {
-    return uniquifySessionTitle(datedSessionTitle(at, "今日节奏"), existingTitles, at);
+    return datedSessionTitle(at, "今日节奏");
   }
   if (options.entrypoint === "birth_time_rectification" || isRectificationHandoffQuestion(question)) {
-    return uniquifySessionTitle(datedSessionTitle(at, "生时校正"), existingTitles, at);
+    return datedSessionTitle(at, "生时校正");
   }
   const normalized = question.replace(/\s+/g, " ").trim().replace(/[？?！!。．，,；;：:]+$/u, "");
   if (!normalized) return "新对话";
   if (options.theme && options.theme !== "general") {
     const label = consultationDomainDefinition(options.theme).label;
-    return uniquifySessionTitle(`${label} · ${clipTitle(normalized, 10)}`, existingTitles, at);
+    return `${label} · ${clipTitle(normalized, 10)}`;
   }
-  return uniquifySessionTitle(clipTitle(normalized), existingTitles, at);
+  return clipTitle(normalized);
 }