diff --git a/docs/BUG_HISTORY.md b/docs/BUG_HISTORY.md
index c2ac9131..d7861be6 100644
--- a/docs/BUG_HISTORY.md
+++ b/docs/BUG_HISTORY.md
@@ -7150,3 +7150,19 @@
 - 相关记录：BUG-464
 - 复发自：无
 - 修复版本：待发布
+
+## BUG-466 | 星盘库、合盘历史和会话置顶/归档仍有一份会骗人的本地真相
+
+- 状态：resolved
+- 首次发现：2026-09-01
+- 最近更新：2026-09-01
+- 影响面：星盘库保存/删除、合盘历史、会话置顶与归档、`chat_sessions` 列
+- 用户现象：云端保存失败仍提示已保存，刷新后记录消失；云端删除失败后刷新会复活；合盘历史按 id 并集，服务端删掉的记录会从本机回来；置顶和归档只活在这台浏览器里，换设备全部归零。
+- 触发条件：断网或接口失败时保存/删除其他人的星盘；云端删除合盘历史后刷新；在一台设备置顶或归档后再换设备打开。
+- 根因：星盘库和合盘历史同时写 localStorage 与云端，启动时又用云端替换或并集覆盖；置顶/归档只有 `jyotisha-session-controls` 本地键，没有账户数据。仓内曾用 `20260718100000_repair_missing_chart_profiles.sql` 与 `20260718101000_repair_missing_synastry_reports.sql` 修过同类双份真相。
+- 修复：星盘库与合盘历史只信云端列表；写失败保留表单或当页报告并明确报错，不再写本地副本。启动清除旧库/历史键。`chat_sessions` 增加 `pinned`、`archived_at`，置顶/归档走既有 PATCH；本地控制键一次性导入后删除。每日星语缓存与 `activeChartId` 不动。
+- 验证：合同测试锁保存/删除失败不再写本地、合盘不再并集、列表/详情带上两列、PATCH 元数据接受 `pinned`/`archived_at`、旧 `messages` PATCH 仍忽略。`npm run test:db` 重放加列迁移并验证 RLS。`./node_modules/.bin/tsc --noEmit`、前端测试与 `next build` 的 `/` `○ Static` 必须通过。
+- 防复发：不得把 `jyotisha_chart_library` / `jyotisha_synastry_history` / `jyotisha-session-controls` 写回作为权威存储。云端写失败不得再提示已保存到本地。不得把业务迁移复制进 `frontend/db/migrations`。列表 GET 仍不得带回 `messages`。
+- 相关记录：BUG-464、BUG-465
+- 复发自：无
+- 修复版本：待发布
diff --git a/frontend/src/app/api/sessions/[id]/route.ts b/frontend/src/app/api/sessions/[id]/route.ts
index 39e5a91d..551416a1 100644
--- a/frontend/src/app/api/sessions/[id]/route.ts
+++ b/frontend/src/app/api/sessions/[id]/route.ts
@@ -14,7 +14,7 @@ import { consumeUserRequestRateLimit } from "@/lib/request-rate-limit";
 
 type RouteContext = { params: Promise<{ id: string }> };
 
-const sessionSelect = "id,title,theme,model_id,messages,session_type,rectification_case_id,chart_profile_id,chart_profile_name,chart_profile_role,updated_at";
+const sessionSelect = "id,title,theme,model_id,messages,session_type,rectification_case_id,chart_profile_id,chart_profile_name,chart_profile_role,updated_at,pinned,archived_at";
 const sessionIdPattern = /^[0-9a-f]{8}-[0-9a-f]{4}-[1-8][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i;
 
 function payloadHasMessages(payload: unknown): payload is { messages: unknown } {
diff --git a/frontend/src/app/api/sessions/route.ts b/frontend/src/app/api/sessions/route.ts
index 7addf632..77c24b6d 100644
--- a/frontend/src/app/api/sessions/route.ts
+++ b/frontend/src/app/api/sessions/route.ts
@@ -4,7 +4,7 @@ import { consumeUserRequestRateLimit } from "@/lib/request-rate-limit";
 import { isSupabaseConfigurationError } from "@/lib/supabase/config";
 import { createServerSupabaseClient } from "@/lib/supabase/server";
 
-const SESSION_LIST_COLUMNS = "id,title,theme,model_id,session_type,rectification_case_id,chart_profile_id,chart_profile_name,chart_profile_role,updated_at";
+const SESSION_LIST_COLUMNS = "id,title,theme,model_id,session_type,rectification_case_id,chart_profile_id,chart_profile_name,chart_profile_role,updated_at,pinned,archived_at";
 
 export async function GET() {
   try {
diff --git a/frontend/src/app/page.tsx b/frontend/src/app/page.tsx
index f1407955..bb1121ec 100644
--- a/frontend/src/app/page.tsx
+++ b/frontend/src/app/page.tsx
@@ -106,7 +106,11 @@ import {
   membershipHref,
 } from "@/lib/membership";
 import { nextActivityView, activityCompletedTrail, type AgentActivityView, type ChatMessage } from "@/lib/chat-message-view";
-import { chartLibrarySessionBranch } from "@/lib/chart-library-session";
+import {
+  chartLibraryFromCloudOthers,
+  chartLibraryOnCloudFailure,
+  chartLibrarySessionBranch,
+} from "@/lib/chart-library-session";
 import {
   emptyConsultationTimeline,
   reduceConsultationTimeline,
@@ -249,6 +253,8 @@ type ChatSession = {
   chartProfileId: string | null;
   chartProfileName: string | null;
   chartProfileRole: "self" | "other" | null;
+  pinned: boolean;
+  archivedAt: string | null;
   messagesHydrated: boolean;
 };
 
@@ -448,6 +454,8 @@ function createSession(
     updatedAt: timestamp(),
     sessionType,
     rectificationCaseId: null,
+    pinned: false,
+    archivedAt: null,
     messagesHydrated: true,
     ...chartBinding,
   };
@@ -497,19 +505,62 @@ function selectedBirthPlace(profile: Profile): BirthPlace | null {
   };
 }
 
-function chartLibraryStorageKey(accountId: string) {
-  return `jyotisha_chart_library:${accountId}`;
-}
 function activeChartStorageKey(accountId: string) {
   return `jyotisha_active_chart:${accountId}`;
 }
-function synastryHistoryStorageKey(accountId: string) {
-  return `jyotisha_synastry_history:${accountId}`;
-}
 function dailyStarlanguageStorageKey(accountId: string) {
   return `jyotisha_daily_starlanguage:${accountId}`;
 }
 
+function sessionControlsStorageKey(accountId: string, kind: "pinned" | "archived") {
+  return `jyotisha-session-controls:${accountId}:${kind}`;
+}
+
+function discardLegacyCloudMirrorKeys(accountId: string) {
+  localStorage.removeItem(`jyotisha_chart_library:${accountId}`);
+  localStorage.removeItem(`jyotisha_synastry_history:${accountId}`);
+}
+
+function readLegacySessionControlIds(accountId: string, kind: "pinned" | "archived"): string[] {
+  try {
+    const parsed = JSON.parse(localStorage.getItem(sessionControlsStorageKey(accountId, kind)) || "null") as unknown;
+    return Array.isArray(parsed) ? parsed.filter((id): id is string => typeof id === "string") : [];
+  } catch {
+    return [];
+  }
+}
+
+function clearLegacySessionControlKeys(accountId: string) {
+  localStorage.removeItem(sessionControlsStorageKey(accountId, "pinned"));
+  localStorage.removeItem(sessionControlsStorageKey(accountId, "archived"));
+}
+
+function applyLegacySessionControls(accountId: string, sessions: ChatSession[]): ChatSession[] {
+  const pinnedKey = sessionControlsStorageKey(accountId, "pinned");
+  const archivedKey = sessionControlsStorageKey(accountId, "archived");
+  if (localStorage.getItem(pinnedKey) === null && localStorage.getItem(archivedKey) === null) {
+    return sessions;
+  }
+  const pinnedIds = new Set(readLegacySessionControlIds(accountId, "pinned"));
+  const archivedIds = new Set(readLegacySessionControlIds(accountId, "archived"));
+  const next = sessions.map((session) => ({
+    ...session,
+    pinned: session.pinned || pinnedIds.has(session.id),
+    archivedAt: session.archivedAt || (archivedIds.has(session.id) ? new Date().toISOString() : null),
+  }));
+  void Promise.allSettled(next.flatMap((session, index) => {
+    const previous = sessions[index];
+    if (!previous) return [];
+    const patch: { pinned?: boolean; archived_at?: string | null } = {};
+    if (session.pinned !== previous.pinned) patch.pinned = session.pinned;
+    if (session.archivedAt !== previous.archivedAt) patch.archived_at = session.archivedAt;
+    if (patch.pinned === undefined && patch.archived_at === undefined) return [];
+    return [writeChatSession(session.id, patch, "update")];
+  }));
+  clearLegacySessionControlKeys(accountId);
+  return next;
+}
+
 type StoredDailyStarlanguage = {
   readonly day: string;
   readonly fingerprint: string;
@@ -574,34 +625,6 @@ function upsertSelfChart(library: ChartLibraryRecord[], profile: Profile) {
   return [buildSelfChartRecord(profile), ...others];
 }
 
-function readChartLibrary(accountId: string): ChartLibraryRecord[] {
-  try {
-    const parsed = JSON.parse(localStorage.getItem(chartLibraryStorageKey(accountId)) || "[]") as ChartLibraryRecord[];
-    return Array.isArray(parsed)
-      ? parsed
-        .filter((record) => record?.id && record?.profile)
-        .map((record) => {
-          const relationship = record.role === "self" ? "self" : record.relationship || record.profile.chartRelationship || "other";
-          return { ...record, profile: { ...record.profile, chartRelationship: relationship }, relationship };
-        })
-      : [];
-  } catch {
-    return [];
-  }
-}
-function readSynastryHistory(accountId: string): SynastryReportCard[] {
-  try {
-    const parsed = JSON.parse(localStorage.getItem(synastryHistoryStorageKey(accountId)) || "[]") as SynastryReportCard[];
-    return Array.isArray(parsed) ? parsed.filter((record) => record?.id && record?.partnerName).slice(0, 10) : [];
-  } catch {
-    return [];
-  }
-}
-
-function writeSynastryHistory(accountId: string, history: SynastryReportCard[]) {
-  localStorage.setItem(synastryHistoryStorageKey(accountId), JSON.stringify(history.slice(0, 10)));
-}
-
 function normalizeSynastryReportApiRecord(record: SynastryReportApiRecord): SynastryReportCard | null {
   if (!record.report || typeof record.report !== "object") return null;
   return {
@@ -903,6 +926,7 @@ function readSessions(value: unknown, catalog: PublicLanguageModelCatalog | null
       chart_profile_role?: unknown;
       session_type?: unknown;
       updated_at?: unknown;
+      archived_at?: unknown;
     };
     const messagesPresent = Object.prototype.hasOwnProperty.call(session, "messages");
     const messages: Message[] = Array.isArray(session.messages)
@@ -951,6 +975,12 @@ function readSessions(value: unknown, catalog: PublicLanguageModelCatalog | null
         chartProfileRole: session.chart_profile_role === "self" || session.chart_profile_role === "other"
           ? session.chart_profile_role
           : null,
+        pinned: session.pinned === true,
+        archivedAt: typeof session.archived_at === "string" && session.archived_at
+          ? session.archived_at
+          : typeof session.archivedAt === "string" && session.archivedAt
+            ? session.archivedAt
+            : null,
         updatedAt: typeof session.updatedAt === "number"
           ? session.updatedAt
           : typeof session.updated_at === "string"
@@ -1286,8 +1316,6 @@ export default function Home() {
   const [accountError, setAccountError] = useState("");
   const [signingOut, setSigningOut] = useState(false);
   const [sessions, setSessions] = useState<ChatSession[]>([]);
-  const [pinnedSessionIds, setPinnedSessionIds] = useState<string[]>([]);
-  const [archivedSessionIds, setArchivedSessionIds] = useState<string[]>([]);
   const [showArchivedSessions, setShowArchivedSessions] = useState(false);
   const [sessionMenuId, setSessionMenuId] = useState<string | null>(null);
   const [pendingSessionDeletion, setPendingSessionDeletion] = useState<ChatSession | null>(null);
@@ -1391,12 +1419,12 @@ export default function Home() {
   const rectificationSurfaceOpen = activeRectificationSession
     && activeSession.id === rectificationSessionId;
   const visibleSessions = sessions
-    .filter((session) => showArchivedSessions ? archivedSessionIds.includes(session.id) : !archivedSessionIds.includes(session.id))
+    .filter((session) => showArchivedSessions ? Boolean(session.archivedAt) : !session.archivedAt)
     .filter((session) => session.sessionType === "birth_time_rectification"
       || session.messages.length > 0
       || !session.messagesHydrated
       || session.id === activeSessionId)
-    .sort((left, right) => Number(pinnedSessionIds.includes(right.id)) - Number(pinnedSessionIds.includes(left.id)));
+    .sort((left, right) => Number(right.pinned) - Number(left.pinned));
   const activeError = requestError && requestError.sessionId === activeSession?.id ? requestError.message : "";
   const isLoading = pendingSessionId === activeSession?.id;
   const productEntrypointsDisabled = !hydrated
@@ -1478,13 +1506,6 @@ export default function Home() {
     rectificationSessionId,
   ]);
 
-  useEffect(() => {
-    if (!hydrated || !accountId) return;
-    const prefix = `jyotisha-session-controls:${accountId}:`;
-    setPinnedSessionIds(JSON.parse(localStorage.getItem(`${prefix}pinned`) || "[]"));
-    setArchivedSessionIds(JSON.parse(localStorage.getItem(`${prefix}archived`) || "[]"));
-  }, [accountId, hydrated]);
-
   useEffect(() => {
     if (!hydrated || !accountId) return;
     void (async () => {
@@ -1499,13 +1520,6 @@ export default function Home() {
     })();
   }, [accountId, hydrated]);
 
-  useEffect(() => {
-    if (!hydrated || !accountId) return;
-    const prefix = `jyotisha-session-controls:${accountId}:`;
-    localStorage.setItem(`${prefix}pinned`, JSON.stringify(pinnedSessionIds));
-    localStorage.setItem(`${prefix}archived`, JSON.stringify(archivedSessionIds));
-  }, [accountId, archivedSessionIds, hydrated, pinnedSessionIds]);
-
   useEffect(() => {
     if (!hydrated || !accountId) return;
     setActiveChartId(localStorage.getItem(activeChartStorageKey(accountId)) || "self");
@@ -1523,37 +1537,47 @@ export default function Home() {
     const profileForLibrary: Profile = activeChartId === "self" ? profile : account ? readProfile(account.profile) : profile;
     if (branch === "hydrate-then-persist") {
       chartLibraryLoadedAccount.current = accountId;
-      setChartLibrary(upsertSelfChart(readChartLibrary(accountId), profileForLibrary));
-      setSynastryHistory(readSynastryHistory(accountId));
+      discardLegacyCloudMirrorKeys(accountId);
+      setChartLibrary(chartLibraryOnCloudFailure(profileForLibrary, upsertSelfChart));
+      setSynastryHistory([]);
       void fetchCloudChartLibrary()
         .then((cloudLibrary) => {
-          setChartLibrary(() => {
-            const next = upsertSelfChart(cloudLibrary.filter((record) => record.role !== "self"), profileForLibrary);
-            localStorage.setItem(chartLibraryStorageKey(accountId), JSON.stringify(next));
-            return next;
-          });
+          setChartLibrary(chartLibraryFromCloudOthers(cloudLibrary, profileForLibrary, upsertSelfChart));
         })
         .catch(() => {
-          // Cloud chart library is best-effort; local library remains usable.
+          setComposerNotice("星盘库暂时无法读取，请重试。", {
+            label: "重试",
+            onClick: () => {
+              void fetchCloudChartLibrary()
+                .then((cloudLibrary) => {
+                  setChartLibrary(chartLibraryFromCloudOthers(cloudLibrary, profileForLibrary, upsertSelfChart));
+                })
+                .catch(() => {
+                  setComposerNotice("星盘库暂时无法读取，请重试。");
+                });
+            },
+          });
         });
       void fetchCloudSynastryHistory()
         .then((cloudHistory) => {
-          setSynastryHistory((current) => {
-            const byId = new Map([...current, ...cloudHistory].map((record) => [record.id, record] as const));
-            const next = [...byId.values()].sort((a, b) => b.createdAt - a.createdAt).slice(0, 10);
-            writeSynastryHistory(accountId, next);
-            return next;
-          });
+          setSynastryHistory([...cloudHistory].sort((a, b) => b.createdAt - a.createdAt).slice(0, 10));
         })
         .catch(() => {
-          // Cloud synastry history is best-effort; local history remains usable.
+          setComposerNotice("合盘历史暂时无法读取，请重试。", {
+            label: "重试",
+            onClick: () => {
+              void fetchCloudSynastryHistory()
+                .then((cloudHistory) => {
+                  setSynastryHistory([...cloudHistory].sort((a, b) => b.createdAt - a.createdAt).slice(0, 10));
+                })
+                .catch(() => {
+                  setComposerNotice("合盘历史暂时无法读取，请重试。");
+                });
+            },
+          });
         });
     }
-    setChartLibrary((current) => {
-      const next = upsertSelfChart(current, profileForLibrary);
-      localStorage.setItem(chartLibraryStorageKey(accountId), JSON.stringify(next));
-      return next;
-    });
+    setChartLibrary((current) => upsertSelfChart(current, profileForLibrary));
   }, [account, accountId, activeChartId, profile]);
 
   useEffect(() => {
@@ -1786,6 +1810,8 @@ export default function Home() {
             chartProfileId: "self",
             chartProfileName: previewProfile.name.trim() || "我",
             chartProfileRole: "self",
+            pinned: false,
+            archivedAt: null,
             messagesHydrated: true,
           };
           setAccount({
@@ -1857,6 +1883,7 @@ export default function Home() {
           }
           nextSessions = [initialSession];
         }
+        nextSessions = applyLegacySessionControls(nextAccount.user.id, nextSessions);
 
         let reservedConsultation: ConsultationStatus | null = null;
         const storedPending: StoredPendingConsultation | null = readStoredPendingConsultation(
@@ -2377,8 +2404,6 @@ export default function Home() {
     const nextSessions = sessions.filter((item) => item.id !== session.id);
     setSessions(nextSessions);
     setBirthTimeConsultationConsent((current) => clearBirthTimeConsultationConsent(current, session.id));
-    setPinnedSessionIds((current) => current.filter((id) => id !== session.id));
-    setArchivedSessionIds((current) => current.filter((id) => id !== session.id));
     if (activeSessionId === session.id) {
       const fallbackId = nextSessions[0]?.id ?? "";
       setActiveSessionId(fallbackId);
@@ -2395,18 +2420,37 @@ export default function Home() {
   }
 
   function togglePinnedSession(sessionId: string) {
-    setPinnedSessionIds((current) => current.includes(sessionId) ? current.filter((id) => id !== sessionId) : [sessionId, ...current]);
+    const session = sessions.find((item) => item.id === sessionId);
+    if (!session) return;
+    const nextPinned = !session.pinned;
+    updateSession(sessionId, (current) => ({ ...current, pinned: nextPinned }));
+    void writeChatSession(sessionId, { pinned: nextPinned }, "update").catch((caught) => {
+      updateSession(sessionId, (current) => ({ ...current, pinned: session.pinned }));
+      setComposerNotice(caught instanceof Error ? caught.message : "置顶同步失败");
+    });
   }
 
   function toggleArchivedSession(sessionId: string) {
-    const restoring = archivedSessionIds.includes(sessionId);
-    setArchivedSessionIds((current) => restoring ? current.filter((id) => id !== sessionId) : [sessionId, ...current]);
+    const session = sessions.find((item) => item.id === sessionId);
+    if (!session) return;
+    const restoring = Boolean(session.archivedAt);
+    const previousActiveId = activeSessionId;
+    const nextArchivedAt = restoring ? null : new Date().toISOString();
+    updateSession(sessionId, (current) => ({ ...current, archivedAt: nextArchivedAt }));
     if (!restoring && activeSessionId === sessionId) {
-      const fallbackId = visibleSessions.find((session) => session.id !== sessionId)?.id ?? "";
+      const fallbackId = visibleSessions.find((item) => item.id !== sessionId)?.id ?? "";
       setActiveSessionId(fallbackId);
       if (!uiPreview.current) writeSessionUrl(fallbackId || null, "replace");
     }
     setComposerNotice(restoring ? "已恢复到聊天记录。" : "已归档，可在左侧归档中恢复。");
+    void writeChatSession(sessionId, { archived_at: nextArchivedAt }, "update").catch((caught) => {
+      updateSession(sessionId, (current) => ({ ...current, archivedAt: session.archivedAt }));
+      if (!restoring && previousActiveId === sessionId) {
+        setActiveSessionId(previousActiveId);
+        if (!uiPreview.current) writeSessionUrl(previousActiveId || null, "replace");
+      }
+      setComposerNotice(caught instanceof Error ? caught.message : "归档同步失败");
+    });
   }
 
   async function shareSession(session: ChatSession) {
@@ -2680,43 +2724,32 @@ export default function Home() {
       return;
     }
     if (!accountId) return;
-    let record: ChartLibraryRecord = {
+    const record: ChartLibraryRecord = {
       id: editingChartId || globalThis.crypto.randomUUID(),
       role: "other",
       profile: nextProfile,
       relationship: otherChartRelationship,
       updatedAt: timestamp(),
     };
-    let cloudSaved = false;
     try {
-      if (editingChartId) {
-        record = await updateCloudChartProfile(record);
-      } else {
-        record = await saveCloudChartProfile(record);
-        cloudSaved = true;
-      }
-      cloudSaved = true;
-    } catch {
-      setProfileNotice("已保存到本地星盘库；云端同步失败，稍后会继续使用本地记录。");
+      const saved = editingChartId
+        ? await updateCloudChartProfile(record)
+        : await saveCloudChartProfile(record);
+      const selfProfile = account ? readProfile(account.profile) : profile;
+      setChartLibrary((current) => {
+        const others = editingChartId
+          ? current.map((item) => item.id === saved.id ? saved : item)
+          : [...current, saved];
+        return upsertSelfChart(others, selfProfile);
+      });
+      setOtherProfileDraft(emptyProfile);
+      setOtherChartRelationship("other");
+      setEditingChartId(null);
       setAccountError("");
-    }
-    const selfProfile = account ? readProfile(account.profile) : profile;
-    setChartLibrary((current) => {
-      const others = editingChartId
-        ? current.map((item) => item.id === record.id ? record : item)
-        : [...current, record];
-      const next = upsertSelfChart(others, selfProfile);
-      localStorage.setItem(chartLibraryStorageKey(accountId), JSON.stringify(next));
-      return next;
-    });
-    setOtherProfileDraft(emptyProfile);
-    setOtherChartRelationship("other");
-    setEditingChartId(null);
-    setAccountError("");
-    if (cloudSaved) {
       setProfileNotice(editingChartId ? "已更新其他人的星盘资料。" : "已保存到云端星盘库。请选择关系类型后点击“用于合盘”。");
-    } else {
-      setProfileNotice("已保存到本地星盘库。");
+    } catch {
+      setProfileNotice("保存失败，请重试");
+      setAccountError("");
     }
   }
 
@@ -2731,12 +2764,12 @@ export default function Home() {
 
   async function deleteOtherChart(recordId: string) {
     if (!accountId || !window.confirm("确定删除这份其他人的星盘资料吗？删除后无法恢复。")) return;
-    let cloudDeleted = false;
     try {
       await deleteCloudChartProfile(recordId);
-      cloudDeleted = true;
     } catch {
+      setProfileNotice("删除失败，请重试");
       setAccountError("");
+      return;
     }
     setChartLibrary((current) => {
       const next = current.filter((record) => record.id !== recordId || record.role === "self");
@@ -2744,13 +2777,10 @@ export default function Home() {
         setActiveChartId("self");
         localStorage.setItem(activeChartStorageKey(accountId), "self");
       }
-      localStorage.setItem(chartLibraryStorageKey(accountId), JSON.stringify(next));
       return next;
     });
     setAccountError("");
-    setProfileNotice(cloudDeleted
-      ? "已从云端星盘库删除。"
-      : "已从本地星盘库删除；云端同步失败，稍后云端可能仍显示旧记录。");
+    setProfileNotice("已从云端星盘库删除。");
   }
 
   function makeDefaultChart(record: ChartLibraryRecord) {
@@ -3073,6 +3103,7 @@ export default function Home() {
 
       // Merge the server-created session into the local list. The browser
       // never generates a Case id; it only mirrors the returned binding.
+      const existing = sessions.find((session) => session.id === opened.sessionId);
       const merged: ChatSession = {
         id: opened.sessionId,
         title: resolveSessionTitle("生时校正", undefined, {
@@ -3085,6 +3116,8 @@ export default function Home() {
         updatedAt: timestamp(),
         sessionType: "birth_time_rectification",
         rectificationCaseId: opened.caseId,
+        pinned: existing?.pinned ?? false,
+        archivedAt: existing?.archivedAt ?? null,
         messagesHydrated: true,
         ...chartSnapshotForSession(activeChartId, chartLibrary, profile),
       };
@@ -3197,20 +3230,20 @@ export default function Home() {
           createdAt: Date.now(),
         };
         let savedReportCard = reportCard;
+        let historyPersisted = !accountId;
         if (accountId) {
           try {
             savedReportCard = await saveCloudSynastryReport(reportCard);
+            historyPersisted = true;
           } catch {
-            // Local history remains the fallback when cloud persistence is unavailable.
+            historyPersisted = false;
           }
         }
         setSynastryReportCard(savedReportCard);
-        if (accountId) {
-          setSynastryHistory((current) => {
-            const next = [savedReportCard, ...current.filter((item) => item.id !== savedReportCard.id)].slice(0, 10);
-            writeSynastryHistory(accountId, next);
-            return next;
-          });
+        if (accountId && historyPersisted) {
+          setSynastryHistory((current) => (
+            [savedReportCard, ...current.filter((item) => item.id !== savedReportCard.id)].slice(0, 10)
+          ));
         }
         chooseSuggestedQuestion([
           baseQuestion,
@@ -3218,6 +3251,9 @@ export default function Home() {
           evidenceSummary,
           payload.relationshipReport?.headline ? `结构化摘要：${payload.relationshipReport.headline}` : "",
         ].join("\n"), relationshipType === "business" ? "career" : "marriage");
+        if (accountId && !historyPersisted) {
+          setComposerNotice("未能存入历史");
+        }
       } else {
         chooseSuggestedQuestion(baseQuestion, relationshipType === "business" ? "career" : "marriage");
         setComposerNotice(response.status === 404
@@ -4108,8 +4144,8 @@ export default function Home() {
   const sidebarSessions = visibleSessions.map((session) => ({
     id: session.id,
     title: sessionSidebarTitle(session, chartLibrary),
-    pinned: pinnedSessionIds.includes(session.id),
-    archived: archivedSessionIds.includes(session.id),
+    pinned: session.pinned,
+    archived: Boolean(session.archivedAt),
   }));
   const sidebarCharts = (chartLibrary.length > 0
     ? chartLibrary
@@ -4354,7 +4390,7 @@ export default function Home() {
           newChatDisabled={!hydrated || !modelCatalog || creatingSession || Boolean(pendingSessionId) || cancellationPending}
           creatingSession={creatingSession}
           sessionControls={{
-            archivedCount: archivedSessionIds.length,
+            archivedCount: sessions.filter((session) => session.archivedAt).length,
             showingArchived: showArchivedSessions,
             menuSessionId: sessionMenuId,
             disabled: Boolean(pendingSessionId) || cancellationPending,
diff --git a/frontend/src/lib/chart-library-session.ts b/frontend/src/lib/chart-library-session.ts
index b1c74777..90a360f7 100644
--- a/frontend/src/lib/chart-library-session.ts
+++ b/frontend/src/lib/chart-library-session.ts
@@ -9,14 +9,17 @@ export function chartLibrarySessionBranch(
   return "persist-self";
 }
 
-export function chartLibraryFromCloudOthers<T extends { role: "self" | "other" }>(
+export function chartLibraryFromCloudOthers<T extends { role: "self" | "other" }, P>(
   cloudLibrary: readonly T[],
-  profile: unknown,
-  upsertSelfChart: (library: T[], profile: unknown) => T[],
+  profile: P,
+  upsertSelfChart: (library: T[], profile: P) => T[],
 ): T[] {
   return upsertSelfChart(cloudLibrary.filter((record) => record.role !== "self"), profile);
 }
 
-export function keepLocalChartLibraryOnCloudFailure<T>(localLibrary: T): T {
-  return localLibrary;
+export function chartLibraryOnCloudFailure<T, P>(
+  profile: P,
+  upsertSelfChart: (library: T[], profile: P) => T[],
+): T[] {
+  return upsertSelfChart([], profile);
 }
diff --git a/frontend/src/lib/chat-notice.ts b/frontend/src/lib/chat-notice.ts
index 719cadd7..0854869b 100644
--- a/frontend/src/lib/chat-notice.ts
+++ b/frontend/src/lib/chat-notice.ts
@@ -10,7 +10,7 @@ export type ChatNoticeAction = Readonly<{
 }>;
 
 const ongoingNotice = /正在|请稍候|请先|联网后/;
-const failedNotice = /失败|无法|不可用|未找到|已写满|已被删除/;
+const failedNotice = /失败|无法|不可用|未能|未找到|已写满|已被删除/;
 const settledNotice = /^已|^回答已恢复/;
 
 export function noticeTone(message: string): NoticeTone {
diff --git a/frontend/src/lib/chat-session-write-contract.ts b/frontend/src/lib/chat-session-write-contract.ts
index 760c937e..b912b14b 100644
--- a/frontend/src/lib/chat-session-write-contract.ts
+++ b/frontend/src/lib/chat-session-write-contract.ts
@@ -37,6 +37,8 @@ export const chatSessionMetadataPatchSchema = z.object({
   title: z.string().trim().min(1).max(160).optional(),
   theme: consultationDomainSchema.optional(),
   model_id: z.string().trim().min(1).max(64).optional(),
+  pinned: z.boolean().optional(),
+  archived_at: z.string().datetime().nullable().optional(),
   ...chartBindingSchema,
 }).strict().refine(
   (value) => Object.values(value).some((field) => field !== undefined),
@@ -123,6 +125,8 @@ export function extractChatSessionMetadataPatch(payload: unknown): unknown {
   if ("chart_profile_id" in record) patch.chart_profile_id = record.chart_profile_id;
   if ("chart_profile_name" in record) patch.chart_profile_name = record.chart_profile_name;
   if ("chart_profile_role" in record) patch.chart_profile_role = record.chart_profile_role;
+  if ("pinned" in record) patch.pinned = record.pinned;
+  if ("archived_at" in record) patch.archived_at = record.archived_at;
   return patch;
 }
 
@@ -130,6 +134,8 @@ export type ChatSessionMetadataPatch = Readonly<{
   title?: string;
   theme?: ConsultationDomain;
   model_id?: string;
+  pinned?: boolean;
+  archived_at?: string | null;
   chart_profile_id?: string | null;
   chart_profile_name?: string | null;
   chart_profile_role?: "self" | "other" | null;
diff --git a/frontend/supabase/migrations/20260901020000_chat_session_pin_archive.sql b/frontend/supabase/migrations/20260901020000_chat_session_pin_archive.sql
new file mode 100644
index 00000000..e5c36054
--- /dev/null
+++ b/frontend/supabase/migrations/20260901020000_chat_session_pin_archive.sql
@@ -0,0 +1,10 @@
+begin;
+
+alter table public.chat_sessions
+  add column if not exists pinned boolean not null default false,
+  add column if not exists archived_at timestamptz null;
+
+grant update (pinned, archived_at)
+  on table public.chat_sessions to authenticated;
+
+commit;
diff --git a/frontend/tests/chart-library-other-profile.test.ts b/frontend/tests/chart-library-other-profile.test.ts
index a36e75e2..0e360053 100644
--- a/frontend/tests/chart-library-other-profile.test.ts
+++ b/frontend/tests/chart-library-other-profile.test.ts
@@ -11,16 +11,20 @@ test("other chart saves do not require the owner's rectification state", () => {
   assert.doesNotMatch(source, /saveOtherChart[\s\S]{0,500}missingProfileStep\(nextProfile\)/);
 });
 
-test("other chart save falls back to local library when cloud sync fails", () => {
-  assert.match(source, /let cloudSaved = false/);
-  assert.match(source, /record = await saveCloudChartProfile\(record\);[\s\S]{0,120}cloudSaved = true/);
-  assert.match(source, /catch\s*\{[\s\S]{0,300}已保存到本地星盘库；云端同步失败/);
-  assert.match(source, /localStorage\.setItem\(chartLibraryStorageKey\(accountId\), JSON\.stringify\(next\)\)/);
-  assert.match(source, /if \(cloudSaved\)[\s\S]{0,180}已保存到云端星盘库/);
-  assert.match(source, /async function deleteOtherChart[\s\S]{0,500}let cloudDeleted = false/);
+test("other chart save fails closed when cloud sync fails", () => {
+  // Former values that locked the dual-truth fallback:
+  // `let cloudSaved = false`, catch copy "已保存到本地星盘库；云端同步失败",
+  // `localStorage.setItem(chartLibraryStorageKey(accountId), JSON.stringify(next))`,
+  // delete copy "已从本地星盘库删除；云端同步失败". Cloud write failure is now failure.
+  assert.doesNotMatch(source, /let cloudSaved = false/);
+  assert.match(source, /await saveCloudChartProfile\(record\)/);
+  assert.match(source, /async function saveOtherChart[\s\S]{0,1600}catch \{[\s\S]{0,180}保存失败，请重试/);
+  assert.doesNotMatch(source, /localStorage\.setItem\(chartLibraryStorageKey/);
+  assert.doesNotMatch(source, /已保存到本地星盘库/);
+  assert.match(source, /已保存到云端星盘库/);
   assert.match(source, /async function deleteOtherChart[\s\S]{0,500}await deleteCloudChartProfile\(recordId\)/);
-  assert.match(source, /async function deleteOtherChart[\s\S]{0,900}已从本地星盘库删除；云端同步失败/);
-  assert.doesNotMatch(source, /deleteOtherChart[\s\S]{0,500}return;\s*}\s*setChartLibrary/);
+  assert.match(source, /async function deleteOtherChart[\s\S]{0,700}catch \{[\s\S]{0,160}删除失败，请重试[\s\S]{0,80}return;/);
+  assert.doesNotMatch(source, /已从本地星盘库删除/);
 });
 
 test("adding another chart waits for the user to choose a relationship type", () => {
@@ -33,7 +37,7 @@ test("adding another chart waits for the user to choose a relationship type", ()
 test("a successful cloud read replaces stale local other charts", () => {
   assert.match(
     source,
-    /fetchCloudChartLibrary\(\)[\s\S]{0,800}upsertSelfChart\(cloudLibrary\.filter\(\(record\) => record\.role !== "self"\), profileForLibrary\)/,
+    /fetchCloudChartLibrary\(\)[\s\S]{0,800}chartLibraryFromCloudOthers\(cloudLibrary, profileForLibrary, upsertSelfChart\)/,
   );
   assert.doesNotMatch(source, /fetchCloudChartLibrary\(\)[\s\S]{0,800}new Map\(\[[\s\S]{0,500}current\.filter\(\(record\) => record\.role === "other"\)/);
 });
@@ -83,6 +87,15 @@ test("relationship intent selects domain-specific evidence instead of treating e
 });
 
 
+test("synastry history is replaced by the cloud list and save failures stay in page memory", () => {
+  // Former value: `new Map([...current, ...cloudHistory])` unioned local+cloud
+  // and `writeSynastryHistory(accountId, next)` on cloud save failure.
+  assert.doesNotMatch(source, /new Map\(\[\.\.\.current, \.\.\.cloudHistory\]/);
+  assert.match(source, /未能存入历史/);
+  assert.doesNotMatch(source, /writeSynastryHistory\(/);
+  assert.match(source, /discardLegacyCloudMirrorKeys\(/);
+});
+
 test("current chart selection is local and does not overwrite the owner's profile", () => {
   assert.match(source, /activeChartStorageKey/);
   assert.match(source, /localStorage\.setItem\(activeChartStorageKey\(accountId\), record\.id\)/);
diff --git a/frontend/tests/chart-library-session.test.ts b/frontend/tests/chart-library-session.test.ts
index 5ce04b47..3ad333bc 100644
--- a/frontend/tests/chart-library-session.test.ts
+++ b/frontend/tests/chart-library-session.test.ts
@@ -3,8 +3,8 @@ import test from "node:test";
 
 import {
   chartLibraryFromCloudOthers,
+  chartLibraryOnCloudFailure,
   chartLibrarySessionBranch,
-  keepLocalChartLibraryOnCloudFailure,
 } from "../src/lib/chart-library-session.ts";
 
 type RecordShape = { id: string; role: "self" | "other" };
@@ -44,7 +44,12 @@ test("a successful cloud read keeps only non-self records before upserting self"
   ]);
 });
 
-test("a failed cloud read leaves the local library in place", () => {
+test("a failed cloud read keeps only the profile-derived self chart", () => {
+  // Former value: keepLocalChartLibraryOnCloudFailure(local) === local.
+  // Local other-charts are no longer a fallback when the cloud read fails.
   const local: RecordShape[] = [{ id: "self", role: "self" }, { id: "other-1", role: "other" }];
-  assert.equal(keepLocalChartLibraryOnCloudFailure(local), local);
+  assert.notDeepEqual(chartLibraryOnCloudFailure({ name: "self" }, upsertSelf), local);
+  assert.deepEqual(chartLibraryOnCloudFailure({ name: "self" }, upsertSelf), [
+    { id: "self", role: "self" },
+  ]);
 });
diff --git a/frontend/tests/chat-notice-and-scroll-contract.test.ts b/frontend/tests/chat-notice-and-scroll-contract.test.ts
index 02166455..bbfa3f6b 100644
--- a/frontend/tests/chat-notice-and-scroll-contract.test.ts
+++ b/frontend/tests/chat-notice-and-scroll-contract.test.ts
@@ -62,6 +62,8 @@ test("assigns notice severity by message intent", () => {
   assert.equal(noticeTone("重命名同步失败"), "error");
   assert.equal(noticeTone("模型服务暂时不可用，当前无法发送问题。"), "error");
   assert.equal(noticeTone("后台未找到本次咨询请求，已停止恢复，请重新发送。"), "error");
+  assert.equal(noticeTone("未能存入历史"), "error");
+  assert.equal(noticeTone("保存失败，请重试"), "error");
 });
 
 test("anchors the streaming scroll instead of following every token", () => {
diff --git a/frontend/tests/chat-session-authority.test.ts b/frontend/tests/chat-session-authority.test.ts
index 10f5f673..ba83130a 100644
--- a/frontend/tests/chat-session-authority.test.ts
+++ b/frontend/tests/chat-session-authority.test.ts
@@ -13,15 +13,17 @@ const sql = readFileSync(
 const sendSource = page.slice(page.indexOf("  async function send("), page.indexOf("\n\n  consultationReplay.current"));
 
 test("session list GET omits messages while detail GET returns them", () => {
+  // Former list/detail column strings ended at updated_at; pinned and archived_at
+  // were added when those flags moved off localStorage.
   assert.match(
     listRoute,
-    /SESSION_LIST_COLUMNS = "id,title,theme,model_id,session_type,rectification_case_id,chart_profile_id,chart_profile_name,chart_profile_role,updated_at"/,
+    /SESSION_LIST_COLUMNS = "id,title,theme,model_id,session_type,rectification_case_id,chart_profile_id,chart_profile_name,chart_profile_role,updated_at,pinned,archived_at"/,
   );
   assert.doesNotMatch(listRoute, /select\(SESSION_LIST_COLUMNS\)[\s\S]*messages/);
   assert.match(itemRoute, /export async function GET/);
   assert.match(
     itemRoute,
-    /sessionSelect = "id,title,theme,model_id,messages,session_type,rectification_case_id,chart_profile_id,chart_profile_name,chart_profile_role,updated_at"/,
+    /sessionSelect = "id,title,theme,model_id,messages,session_type,rectification_case_id,chart_profile_id,chart_profile_name,chart_profile_role,updated_at,pinned,archived_at"/,
   );
   assert.match(page, /async function fetchSessionDetail\(/);
   assert.match(page, /async function ensureSessionMessages\(/);
@@ -58,3 +60,20 @@ test("PATCH compatibility accepts and ignores a legacy messages write", () => {
   assert.match(itemRoute, /return NextResponse\.json\(\{ ok: true \}\)/);
   assert.doesNotMatch(itemRoute, /\.update\(\{[\s\S]*messages:/);
 });
+
+test("pin and archive flags are session metadata, not localStorage", () => {
+  const pinSql = readFileSync(
+    new URL("../supabase/migrations/20260901020000_chat_session_pin_archive.sql", import.meta.url),
+    "utf8",
+  );
+  assert.match(pinSql, /add column if not exists pinned boolean not null default false/);
+  assert.match(pinSql, /add column if not exists archived_at timestamptz null/);
+  assert.match(pinSql, /grant update \(pinned, archived_at\)/);
+  assert.match(page, /function applyLegacySessionControls\(/);
+  assert.match(page, /writeChatSession\(sessionId, \{ pinned: nextPinned \}, "update"\)/);
+  assert.match(page, /writeChatSession\(sessionId, \{ archived_at: nextArchivedAt \}, "update"\)/);
+  assert.match(page, /discardLegacyCloudMirrorKeys\(/);
+  assert.doesNotMatch(page, /setPinnedSessionIds/);
+  assert.doesNotMatch(page, /localStorage\.setItem\(`\$\{prefix\}pinned`/);
+  assert.doesNotMatch(page, /writeSynastryHistory\(/);
+});
diff --git a/frontend/tests/chat-session-write.test.ts b/frontend/tests/chat-session-write.test.ts
index 0f5e2222..f06d99a4 100644
--- a/frontend/tests/chat-session-write.test.ts
+++ b/frontend/tests/chat-session-write.test.ts
@@ -1,7 +1,7 @@
 import assert from "node:assert/strict";
 import { readFileSync } from "node:fs";
 import test from "node:test";
-import { chatSessionCreateSchema, chatSessionWriteSchema, writeChatSession, type ChatSessionWrite } from "../src/lib/chat-session-write-contract.ts";
+import { chatSessionCreateSchema, chatSessionMetadataPatchSchema, chatSessionWriteSchema, writeChatSession, type ChatSessionWrite } from "../src/lib/chat-session-write-contract.ts";
 
 const sessionId = "11111111-1111-4111-8111-111111111111";
 const values = {
@@ -111,6 +111,15 @@ test("chat session schema keeps structured thinking sections on assistant messag
   assert.equal(parsed.messages[0]?.thinkingSections?.[0]?.heading, "统一参数与原始结构");
 });
 
+test("metadata patch accepts pin and archive fields without a transcript", () => {
+  assert.deepEqual(chatSessionMetadataPatchSchema.parse({ pinned: true }), { pinned: true });
+  assert.deepEqual(
+    chatSessionMetadataPatchSchema.parse({ archived_at: "2026-09-01T00:00:00.000Z" }),
+    { archived_at: "2026-09-01T00:00:00.000Z" },
+  );
+  assert.deepEqual(chatSessionMetadataPatchSchema.parse({ archived_at: null }), { archived_at: null });
+});
+
 test("chat session writes use same-origin API instead of browser-to-Supabase requests", async () => {
   const calls: Array<{ url: string; init?: RequestInit }> = [];
   await writeChatSession(sessionId, metadataPatch, "update", async (url, init) => {
diff --git a/frontend/tests/database-local-business.test.ts b/frontend/tests/database-local-business.test.ts
index 50bde32c..e105cc02 100644
--- a/frontend/tests/database-local-business.test.ts
+++ b/frontend/tests/database-local-business.test.ts
@@ -1,6 +1,6 @@
 import assert from "node:assert/strict";
 import { spawnSync } from "node:child_process";
-import { readFileSync } from "node:fs";
+import { existsSync, readFileSync } from "node:fs";
 import { fileURLToPath } from "node:url";
 import test from "node:test";
 
@@ -18,6 +18,10 @@ const acceptedExactFamilyMigration = readFileSync(
   new URL("../supabase/migrations/20260816010000_accept_exact_family_birth_times.sql", import.meta.url),
   "utf8",
 );
+const pinArchiveMigration = readFileSync(
+  new URL("../supabase/migrations/20260901020000_chat_session_pin_archive.sql", import.meta.url),
+  "utf8",
+);
 
 function rpcError(error: unknown): string {
   if (!error || typeof error !== "object") return "";
@@ -87,6 +91,33 @@ test("local PostgreSQL applies the reviewed business schema and serves authentic
     assert.match(migration.stdout, /applied 20260824030000_rectification_turn_origin\.sql/);
     assert.match(migration.stdout, /applied 20260831020000_feature_pricing_admin_runtime_read_policy\.sql/);
     assert.match(migration.stdout, /applied 20260901010000_append_consultation_question\.sql/);
+    assert.match(migration.stdout, /applied 20260901020000_chat_session_pin_archive\.sql/);
+    assert.equal(
+      existsSync(fileURLToPath(new URL("../db/migrations/20260901020000_chat_session_pin_archive.sql", import.meta.url))),
+      false,
+      "business migration must not be copied into frontend/db/migrations (BUG-127/BUG-144)",
+    );
+    fixture.psql(pinArchiveMigration);
+    assert.equal(
+      fixture.psql(`
+        select is_nullable || ':' || data_type
+        from information_schema.columns
+        where table_schema = 'public'
+          and table_name = 'chat_sessions'
+          and column_name = 'pinned'
+      `),
+      "NO:boolean",
+    );
+    assert.equal(
+      fixture.psql(`
+        select is_nullable || ':' || data_type
+        from information_schema.columns
+        where table_schema = 'public'
+          and table_name = 'chat_sessions'
+          and column_name = 'archived_at'
+      `),
+      "YES:timestamp with time zone",
+    );
 
     assert.equal(
       fixture.psql(`
@@ -664,6 +695,63 @@ test("local PostgreSQL applies the reviewed business schema and serves authentic
     assert.equal(inserted.error, null);
     assert.deepEqual(inserted.data, { id: sessionId });
 
+    const pinDefaults = await local
+      .from("chat_sessions")
+      .select("pinned,archived_at")
+      .eq("id", sessionId)
+      .single();
+    assert.equal(pinDefaults.error, null);
+    assert.deepEqual(pinDefaults.data, { pinned: false, archived_at: null });
+
+    const ownerPin = await local
+      .from("chat_sessions")
+      .update({ pinned: true, archived_at: "2026-09-01T00:00:00.000Z" })
+      .eq("id", sessionId)
+      .select("pinned,archived_at")
+      .single();
+    assert.equal(ownerPin.error, null);
+    assert.equal((ownerPin.data as { pinned: boolean }).pinned, true);
+    assert.ok((ownerPin.data as { archived_at: string | null }).archived_at);
+
+    fixture.psqlAs(
+      "identity_runtime",
+      "identity-runtime-test-password",
+      `
+        insert into identity.users (name, email, email_verified, email_verified_at)
+        values ('Pin Archive Other', 'pin-archive-other@example.com', true, now())
+      `,
+    );
+    const otherUserId = fixture.psql(
+      "select id from identity.users where email = 'pin-archive-other@example.com'",
+    );
+    const other = createLocalPostgresDataClient(
+      fixture.connectionUrl("app_runtime", "app-runtime-test-password"),
+      { id: otherUserId, email: "pin-archive-other@example.com" },
+    );
+    const stolen = await other
+      .from("chat_sessions")
+      .update({ pinned: false, archived_at: null })
+      .eq("id", sessionId)
+      .select("id");
+    assert.equal((Array.isArray(stolen.data) ? stolen.data : []).length, 0);
+    assert.equal(
+      fixture.psql(`select pinned from public.chat_sessions where id = '${sessionId}'`),
+      "t",
+    );
+    assert.equal(
+      fixture.psql(`select archived_at is not null from public.chat_sessions where id = '${sessionId}'`),
+      "t",
+    );
+
+    const ownerRestore = await local
+      .from("chat_sessions")
+      .update({ pinned: false, archived_at: null })
+      .eq("id", sessionId)
+      .select("pinned,archived_at")
+      .single();
+    assert.equal(ownerRestore.error, null);
+    assert.deepEqual(ownerRestore.data, { pinned: false, archived_at: null });
+
     const beforeTomorrow = await local
       .from("chat_sessions")
       .select("id")
diff --git a/progress.md b/progress.md
index 1a175f03..80909aaf 100644
--- a/progress.md
+++ b/progress.md
@@ -1104,3 +1104,23 @@
   - `./node_modules/.bin/tsc --noEmit` 通过。
   - `npm test`：**2424 通过 / fail=0 / skipped=0**（含数据库测试；本轮未改库）。
 - 实测：无登录态，浏览器验收（刷新仍在 A、粘贴 `/?c=`、A→B→C 后退、删除死链、流式中切走再 back、401 回跳）未做，由合同测试覆盖。浅色/深色：新文案「该对话不存在或已被删除」走既有 sonner toast，`已被删除` 命中 `failedNotice` 用 error 语气，颜色仍是 `--color-canvas` / `--color-ink`。
+
+## 2026-09-01 - TASK-cloud-truth-convergence：星盘库 / 合盘历史 / 置顶归档收归云端
+
+- 星盘库启动只读 `fetchCloudChartLibrary`（self 仍由 profile 重建），合盘历史用云端列表整体替换。`jyotisha_chart_library:*` 与 `jyotisha_synastry_history:*` 停读写，启动 `removeItem`。云端读失败给出重试，不再静默用本地副本。
+- 保存/删除星盘：云端成功才改 state。失败保留表单或列表行，提示「保存失败，请重试」/「删除失败，请重试」，不再有 `cloudSaved` 或「已保存到本地」。合盘保存失败报告留在当页，提示「未能存入历史」，不写本地历史。
+- `chat_sessions` 增加 `pinned boolean not null default false`、`archived_at timestamptz null`（只加列）。列表/详情 SELECT 带上这两列；置顶/归档走既有 PATCH，乐观更新，失败回滚。本地 `jyotisha-session-controls` 一次性导入后删键。每日星语缓存与 `activeChartId` 未动。
+- 迁移额外 `grant update (pinned, archived_at)`：原表 update 是列级授权，不加新列 grant 则 PATCH 会失败。未改写既有 grant，也未复制进 `frontend/db/migrations`。
+- 断言例外（锁住的正是本轮要修的缺陷）：
+  - `chart-library-other-profile.test.ts`：原值 `let cloudSaved = false`、catch 文案「已保存到本地星盘库；云端同步失败」、`localStorage.setItem(chartLibraryStorageKey…)`、删除「已从本地星盘库删除」。现为失败即失败。
+  - `chart-library-session.test.ts`：原值 `keepLocalChartLibraryOnCloudFailure(local) === local`。现为只保留 profile 重建的 self。
+  - `tests/test_supabase_user_data_contract.py`：原值页面必须含 `localStorage.setItem(chartLibraryStorageKey…)`、`chartLibraryStorageKey`、`synastryHistoryStorageKey`、`Cloud chart library is best-effort`、`writeSynastryHistory(accountId, next)`。
+  - `chat-session-authority.test.ts`：列表/详情列字符串原在 `updated_at` 结束；现含 `pinned,archived_at`。列表仍不得带 `messages`。
+- `next build`：因本 worktree 的 `node_modules` 是指向其他 worktree 的符号链接，默认 Turbopack 拒绝；改用 `next build --webpack`。路由表仍是 `┌ ○ /`（Static）。`/login` 仍是 `ƒ`。
+- 本地验证：
+  - `./node_modules/.bin/tsc --noEmit` 通过。
+  - 非数据库前端测试：**2393 通过 / fail=0 / skipped=0**。
+  - `npm run test:db`：**34 通过 / fail=0 / skipped=0**。第二次整组为干净通过；第一次整组里 `database-admin-account-reset` 在 Docker 刚起来时 migration status=1，单测重跑即过。业务库测试 stdout 含 `applied 20260901020000_chat_session_pin_archive.sql`，幂等重放有 `column "pinned"/"archived_at" already exists, skipping`。
+  - 合计 **2427 ≥ 2424**。
+- 实测：无登录态，未做浏览器里断网保存、云端删除后刷新、双 profile 置顶一致性、localStorage 键审计。由合同测试覆盖。浅色/深色：新文案「保存失败，请重试」「未能存入历史」「星盘库暂时无法读取，请重试。」走既有 sonner，`失败`/`未能`/`无法` 命中 `failedNotice` 用 error 语气，颜色仍是 `--color-canvas` / `--color-ink`。
+- 未提交、未推送。
diff --git a/tests/test_supabase_user_data_contract.py b/tests/test_supabase_user_data_contract.py
index 7fd17a23..ec93afe5 100644
--- a/tests/test_supabase_user_data_contract.py
+++ b/tests/test_supabase_user_data_contract.py
@@ -126,7 +126,9 @@ def test_chat_page_uses_authenticated_cloud_persistence() -> None:
     assert "系统正在以账户记录为准同步点数" in source
     assert "回答中途断开，已保留现有内容，本次已计费。" not in source
     assert "本次已开始生成并计费" not in source
-    assert 'localStorage.setItem(chartLibraryStorageKey(accountId)' in source
+    # Former value: `localStorage.setItem(chartLibraryStorageKey(accountId)`
+    # wrote a local library copy on cloud save failure.
+    assert "localStorage.setItem(chartLibraryStorageKey(accountId)" not in source
     assert 'localStorage.setItem("chat_sessions"' not in source
 
 
@@ -180,19 +182,24 @@ def test_chart_profile_library_has_cloud_table_api_and_local_fallback() -> None:
         "draftSynastryQuestionFromChart",
         "synastryReportCard",
         "synastryHistory",
-        "synastryHistoryStorageKey",
+        "discardLegacyCloudMirrorKeys",
         "synastry-report-card",
         "synastry-history-list",
         'fetch("/api/synastry"',
         "Ashtakoot",
-        "chartLibraryStorageKey",
-        "Cloud chart library is best-effort",
+        "jyotisha_chart_library",
+        "保存失败，请重试",
         "星盘库",
         "添加其他星盘",
         "用于合盘",
         "设为默认",
     ):
         assert token in page
+    # Former values: synastryHistoryStorageKey, chartLibraryStorageKey,
+    # and the comment "Cloud chart library is best-effort".
+    assert "synastryHistoryStorageKey" not in page
+    assert "chartLibraryStorageKey" not in page
+    assert "Cloud chart library is best-effort" not in page
     assert "ayanam-profile" not in page
     assert "ayanam-sessions" not in page
 
@@ -251,11 +258,14 @@ def test_synastry_reports_are_cloud_persisted_per_user() -> None:
         "fetchCloudSynastryHistory",
         "saveCloudSynastryReport",
         'fetch("/api/synastry-reports"',
-        "writeSynastryHistory(accountId, next)",
+        "未能存入历史",
         "cloud_synastry_history_unavailable",
         "cloud_synastry_report_save_failed",
     ):
         assert token in page
+    # Former value: writeSynastryHistory(accountId, next) wrote a local
+    # history copy when cloud save failed.
+    assert "writeSynastryHistory(accountId, next)" not in page
 
 
 def test_consultation_credit_lifecycle_is_idempotent_and_server_only() -> None: