直聊的种子历史改成逐条真多轮，不再靠块头文本猜轮次。

一条一个角色下拉加一整句正文，换行原样保留；旧盘里的纯文本在读盘时迁移，切得出轮次的转成条目，切不出的挪进史前设定免得悄悄丢掉。历史编辑器做成共用控件，预设工作台的用例与假历史也用同一套。

web/chat.js

@@ -1,4 +1,5 @@
 import { renderMarkdownToHtml } from "./markdown.js";
+import { createHistoryEditor, normalizeHistoryTurns } from "./history-editor.js";
 import { planWheelScroll } from "./chat-scroll.js";
 import {
   bumpKeepStats,
@@ -26,6 +27,7 @@ const EMPTY_SLOTS = {
   systemPrompt: "",
   loreBefore: "",
   seedHistory: "",
+  seedMessages: [],
   loreAfter: "",
   postTurn: "",
   charName: "",
@@ -118,6 +120,12 @@ let editingTurnId = null;
 let editingDraft = "";
 /** 复制模式：开＝回复可选中、显示复制按钮；关＝整张卡片都能拖动（禁用复制） */
 let copyMode = loadCopyMode();
+/** 种子历史（假历史）：编辑器和 slots 共用这一份数组，点「应用」才写盘 */
+const seedTurns = [];
+/** 旧版种子历史文本：只为了不把老数据的纯文本丢掉（新数据为空） */
+let seedLegacyText = "";
+/** @type {ReturnType<typeof createHistoryEditor> | null} */
+let seedEditor = null;
 /** 侧栏收起状态：left = 对话列表，right = 上下文面板 */
 let railLeftHidden = false;
 let railRightHidden = false;
@@ -389,7 +397,8 @@ function slotsFromEditor() {
   return {
     systemPrompt: els.shellSystem.value,
     loreBefore: els.shellLoreBefore.value,
-    seedHistory: els.shellSeedHistory.value,
+    seedHistory: seedLegacyText,
+    seedMessages: seedTurns.map((turn) => ({ role: turn.role, content: turn.content })),
     loreAfter: els.shellLoreAfter.value,
     postTurn: els.shellPostTurn.value,
     charName: els.shellCharName.value,
@@ -400,12 +409,30 @@ function slotsFromEditor() {
   };
 }
 
+function mountSeedEditor() {
+  if (!els.shellSeedHistory || seedEditor) return;
+  seedEditor = createHistoryEditor({
+    items: seedTurns,
+    disabled: true,
+    addLabel: "＋ 加一句",
+    emptyHint: "空则不占历史；点「＋ 加一句」开始写。",
+  });
+  els.shellSeedHistory.replaceChildren(seedEditor.el);
+}
+
+function fillSeedTurns(value, legacyText) {
+  seedLegacyText = typeof legacyText === "string" ? legacyText : "";
+  const turns = normalizeHistoryTurns(value);
+  seedTurns.splice(0, seedTurns.length, ...turns);
+  if (seedEditor) seedEditor.redraw();
+}
+
 function fillEditor(shellLike) {
   const s = shellLike || { name: "", ...EMPTY_SLOTS };
   els.shellName.value = s.name || "";
   els.shellSystem.value = s.systemPrompt || "";
   els.shellLoreBefore.value = s.loreBefore || "";
-  els.shellSeedHistory.value = s.seedHistory || "";
+  fillSeedTurns(s.seedMessages, s.seedHistory);
   els.shellLoreAfter.value = s.loreAfter || "";
   els.shellPostTurn.value = s.postTurn || "";
   els.shellCharName.value = s.charName || "";
@@ -420,7 +447,6 @@ function setContextEditorEnabled(enabled, subtitle) {
     els.shellName,
     els.shellSystem,
     els.shellLoreBefore,
-    els.shellSeedHistory,
     els.shellLoreAfter,
     els.shellPostTurn,
     els.shellCharName,
@@ -432,6 +458,7 @@ function setContextEditorEnabled(enabled, subtitle) {
     els.btnClearShell,
   ];
   for (const el of fields) el.disabled = !enabled;
+  if (seedEditor) seedEditor.setDisabled(!enabled);
   if (els.contextSub) {
     els.contextSub.textContent =
       subtitle || (enabled ? "改完点应用" : "选择或新建后编辑");
@@ -1866,7 +1893,7 @@ function contextFieldsEmpty() {
   return (
     !els.shellSystem.value.trim() &&
     !els.shellLoreBefore.value.trim() &&
-    !els.shellSeedHistory.value.trim() &&
+    seedTurns.length === 0 &&
     !els.shellLoreAfter.value.trim() &&
     !els.shellPostTurn.value.trim()
   );
@@ -3223,6 +3250,8 @@ let relayoutTimer = 0;window.addEventListener(
   { passive: true },
 );
 
+mountSeedEditor();
+
 loadProfiles()
   .then(() => loadChatPrefs())
   .then(() => {