diff --git a/chat-history.js b/chat-history.js
index 4c657f6..161eed1 100644
--- a/chat-history.js
+++ b/chat-history.js
@@ -51,9 +51,9 @@ export function getAssistantTurns(chat) {
   const assistantTurns = [];
   // 从 index 1 开始：index 0 是角色卡首条消息（greeting），不参与提取
   for (let index = 1; index < chat.length; index++) {
-    if (isAssistantChatMessage(chat[index], { index, chat })) {
-      assistantTurns.push(index);
-    }
+    if (!isAssistantChatMessage(chat[index], { index, chat })) continue;
+    if (!String(chat[index]?.mes ?? "").trim()) continue;
+    assistantTurns.push(index);
   }
   return assistantTurns;
 }
@@ -75,10 +75,12 @@ export function buildExtractionMessages(chat, startIdx, endIdx, settings) {
   ) {
     const msg = chat[index];
     if (isSystemMessageForExtraction(msg, { index, chat })) continue;
+    const content = sanitizePlannerMessageText(msg);
+    if (!String(content || "").trim()) continue;
     messages.push({
       seq: index,
       role: msg.is_user ? "user" : "assistant",
-      content: sanitizePlannerMessageText(msg),
+      content,
     });
   }
 
diff --git a/event-binding.js b/event-binding.js
index 8650016..bca60c2 100644
--- a/event-binding.js
+++ b/event-binding.js
@@ -685,6 +685,24 @@ export function onMessageReceivedController(
         dbReady,
       },
     );
+    if (
+      runtime.getIsHostGenerationRunning?.() === true &&
+      typeof runtime.deferAutoExtraction === "function"
+    ) {
+      runtime.console?.debug?.(
+        "[ST-BME] assistant message received during host generation, deferring auto extraction",
+        {
+          messageId: Number.isFinite(Number(targetMessageIndex))
+            ? Number(targetMessageIndex)
+            : null,
+        },
+      );
+      runtime.deferAutoExtraction("generation-running", {
+        messageId: targetMessageIndex,
+      });
+      runtime.refreshPersistedRecallMessageUi?.();
+      return;
+    }
     enqueueMicrotask(() => {
       void runtime.runExtraction().catch((error) => {
         runtime.console.error("[ST-BME] 异步自动提取失败:", error);
diff --git a/graph.js b/graph.js
index 5e12e55..59b780c 100644
--- a/graph.js
+++ b/graph.js
@@ -6,6 +6,7 @@ import {
   createDefaultHistoryState,
   createDefaultVectorIndexState,
   normalizeGraphRuntimeState,
+  PROCESSED_MESSAGE_HASH_VERSION,
 } from "./runtime-state.js";
 import {
   hasSameScopeIdentity,
@@ -717,7 +718,10 @@ export function importGraph(json) {
     node.embedding = null;
   }
   graph.batchJournal = createDefaultBatchJournal();
+  graph.historyState.processedMessageHashVersion =
+    PROCESSED_MESSAGE_HASH_VERSION;
   graph.historyState.processedMessageHashes = {};
+  graph.historyState.processedMessageHashesNeedRefresh = true;
   graph.historyState.historyDirtyFrom = null;
   graph.vectorIndexState.hashToNodeId = {};
   graph.vectorIndexState.nodeToHash = {};
diff --git a/index.js b/index.js
index fa7ead1..30e3247 100644
--- a/index.js
+++ b/index.js
@@ -181,6 +181,7 @@ import {
   markHistoryDirty,
   normalizeGraphRuntimeState,
   PROCESSED_MESSAGE_HASH_VERSION,
+  rebindProcessedHistoryStateToChat,
   snapshotProcessedMessageHashes,
   undoLatestMaintenance,
 } from "./runtime-state.js";
@@ -546,6 +547,7 @@ const HISTORY_RECOVERY_SETTLE_MS = 80;
 const HISTORY_MUTATION_RETRY_DELAYS_MS = [80, 220, 500, 900];
 const GRAPH_LOAD_RETRY_DELAYS_MS = [120, 450, 1200, 2500];
 const AUTO_EXTRACTION_DEFER_RETRY_DELAYS_MS = [120, 320, 800, 1600, 2800];
+const AUTO_EXTRACTION_HOST_SETTLE_MS = 120;
 let runtimeStatus = createUiStatus("待命", "准备就绪", "idle");
 let lastExtractionStatus = createUiStatus("待命", "尚未执行提取", "idle");
 let lastVectorStatus = createUiStatus("待命", "尚未执行向量任务", "idle");
@@ -576,6 +578,8 @@ let pendingAutoExtraction = {
   requestedAt: 0,
   attempts: 0,
 };
+let isHostGenerationRunning = false;
+let lastHostGenerationEndedAt = 0;
 let skipBeforeCombineRecallUntil = 0;
 let lastPreGenerationRecallKey = "";
 let lastPreGenerationRecallAt = 0;
@@ -3788,6 +3792,178 @@ function resolveCompatibleGraphShadowSnapshot(
   });
 }
 
+function createShadowComparisonGraph({
+  chatId = "",
+  revision = 0,
+  integrity = "",
+} = {}) {
+  const graph = createEmptyGraph();
+  stampGraphPersistenceMeta(graph, {
+    revision: Math.max(0, normalizeIndexedDbRevision(revision)),
+    chatId: String(chatId || ""),
+    integrity: String(integrity || ""),
+    reason: "shadow-compare-reference",
+  });
+  return graph;
+}
+
+function applyShadowSnapshotToRuntime(
+  chatId,
+  shadowSnapshot,
+  {
+    source = "shadow-restore",
+    attemptIndex = 0,
+    promoteToIndexedDb = true,
+  } = {},
+) {
+  const normalizedChatId = normalizeChatIdCandidate(
+    chatId || shadowSnapshot?.chatId,
+  );
+  if (!normalizedChatId || !shadowSnapshot?.serializedGraph) {
+    return {
+      success: false,
+      loaded: false,
+      loadState: graphPersistenceState.loadState,
+      reason: "shadow-invalid",
+      chatId: normalizedChatId || "",
+      attemptIndex,
+    };
+  }
+
+  let shadowGraph = null;
+  try {
+    shadowGraph = cloneGraphForPersistence(
+      normalizeGraphRuntimeState(
+        deserializeGraph(shadowSnapshot.serializedGraph),
+        normalizedChatId,
+      ),
+      normalizedChatId,
+    );
+  } catch (error) {
+    console.warn("[ST-BME] shadow snapshot 恢复失败:", error);
+    return {
+      success: false,
+      loaded: false,
+      loadState: graphPersistenceState.loadState,
+      reason: "shadow-deserialize-failed",
+      detail: error?.message || String(error),
+      chatId: normalizedChatId,
+      attemptIndex,
+    };
+  }
+
+  const shadowRevision = Math.max(
+    1,
+    normalizeIndexedDbRevision(shadowSnapshot.revision),
+  );
+  stampGraphPersistenceMeta(shadowGraph, {
+    revision: shadowRevision,
+    reason: `shadow:${String(source || "shadow-restore")}`,
+    chatId: normalizedChatId,
+    integrity:
+      String(shadowSnapshot.integrity || "").trim() ||
+      getChatMetadataIntegrity(getContext()) ||
+      graphPersistenceState.metadataIntegrity,
+  });
+
+  currentGraph = shadowGraph;
+  extractionCount = Number.isFinite(currentGraph?.historyState?.extractionCount)
+    ? currentGraph.historyState.extractionCount
+    : 0;
+  lastExtractedItems = [];
+  const restoredRecallUi = restoreRecallUiStateFromPersistence(
+    getContext()?.chat,
+  );
+  runtimeStatus = createUiStatus(
+    "图谱临时恢复",
+    "已从本次会话临时快照恢复最近图谱，正在补写 IndexedDB",
+    "warning",
+  );
+  lastExtractionStatus = createUiStatus(
+    "待命",
+    "已从会话快照恢复最近图谱，等待下一次提取",
+    "idle",
+  );
+  lastVectorStatus = createUiStatus(
+    "待命",
+    currentGraph.vectorIndexState?.lastWarning ||
+      "已从会话快照恢复最近图谱，等待下一次向量任务",
+    "idle",
+  );
+  lastRecallStatus = createUiStatus(
+    "待命",
+    restoredRecallUi.restored
+      ? "已从持久化召回记录恢复显示，并已恢复最近图谱"
+      : "已从会话快照恢复最近图谱，等待下一次召回",
+    "idle",
+  );
+
+  applyGraphLoadState(GRAPH_LOAD_STATES.SHADOW_RESTORED, {
+    chatId: normalizedChatId,
+    reason: `shadow:${String(source || "shadow-restore")}`,
+    attemptIndex,
+    revision: shadowRevision,
+    lastPersistedRevision: Math.max(
+      normalizeIndexedDbRevision(graphPersistenceState.lastPersistedRevision),
+      shadowRevision,
+    ),
+    queuedPersistRevision: Math.max(
+      normalizeIndexedDbRevision(graphPersistenceState.queuedPersistRevision),
+      shadowRevision,
+    ),
+    queuedPersistChatId: normalizedChatId,
+    pendingPersist: Boolean(promoteToIndexedDb),
+    shadowSnapshotUsed: true,
+    shadowSnapshotRevision: shadowRevision,
+    shadowSnapshotUpdatedAt: String(shadowSnapshot.updatedAt || ""),
+    shadowSnapshotReason: String(
+      shadowSnapshot.debugReason || shadowSnapshot.reason || source || "",
+    ),
+    dbReady: true,
+    writesBlocked: false,
+  });
+  updateGraphPersistenceState({
+    storagePrimary: "indexeddb",
+    storageMode: "indexeddb",
+    dbReady: true,
+    indexedDbLastError: "",
+    metadataIntegrity:
+      getChatMetadataIntegrity(getContext()) ||
+      graphPersistenceState.metadataIntegrity,
+    dualWriteLastResult: {
+      action: "load",
+      source: `${String(source || "shadow-restore")}:shadow`,
+      success: true,
+      provisional: true,
+      revision: shadowRevision,
+      resultCode: "graph.load.shadow-restored",
+      reason: `shadow:${String(source || "shadow-restore")}`,
+      at: Date.now(),
+    },
+  });
+  rememberResolvedGraphIdentityAlias(getContext(), normalizedChatId);
+
+  if (promoteToIndexedDb) {
+    queueGraphPersistToIndexedDb(normalizedChatId, currentGraph, {
+      revision: shadowRevision,
+      reason: `shadow-restore-promote:${String(source || "shadow-restore")}`,
+    });
+  }
+
+  refreshPanelLiveState();
+  schedulePersistedRecallMessageUiRefresh(30);
+  return {
+    success: true,
+    loaded: true,
+    loadState: GRAPH_LOAD_STATES.SHADOW_RESTORED,
+    reason: `shadow:${String(source || "shadow-restore")}`,
+    chatId: normalizedChatId,
+    attemptIndex,
+    revision: shadowRevision,
+    shadowRestored: true,
+  };
+}
+
 async function refreshRuntimeGraphAfterSyncApplied(syncPayload = {}) {
   const action = String(syncPayload?.action || "")
     .trim()
@@ -4924,10 +5100,26 @@ async function loadGraphFromIndexedDb(
       identityRecoveryResult?.snapshot ||
       migrationResult?.snapshot ||
       (await db.exportSnapshot());
+    const shadowSnapshot = resolveCompatibleGraphShadowSnapshot(
+      resolveCurrentChatIdentity(getContext()),
+    );
 
     cacheIndexedDbSnapshot(normalizedChatId, snapshot);
 
     if (!isIndexedDbSnapshotMeaningful(snapshot)) {
+      if (shadowSnapshot) {
+        const shadowRestoreResult = applyShadowSnapshotToRuntime(
+          normalizedChatId,
+          shadowSnapshot,
+          {
+            source: `${source}:shadow-indexeddb-empty`,
+            attemptIndex,
+          },
+        );
+        if (shadowRestoreResult?.loaded) {
+          return shadowRestoreResult;
+        }
+      }
       if (applyEmptyState && getCurrentChatId() === normalizedChatId) {
         return applyIndexedDbEmptyToRuntime(normalizedChatId, {
           source,
@@ -4946,6 +5138,39 @@ async function loadGraphFromIndexedDb(
     const snapshotRevision = normalizeIndexedDbRevision(
       snapshot?.meta?.revision,
     );
+    const snapshotIntegrity = String(snapshot?.meta?.integrity || "").trim();
+    const shadowDecision = shouldPreferShadowSnapshotOverOfficial(
+      createShadowComparisonGraph({
+        chatId: normalizedChatId,
+        revision: snapshotRevision,
+        integrity: snapshotIntegrity,
+      }),
+      shadowSnapshot,
+    );
+    if (shadowSnapshot && shadowDecision?.reason) {
+      updateGraphPersistenceState({
+        dualWriteLastResult: {
+          action: "shadow-compare",
+          source: `${source}:indexeddb-shadow-compare`,
+          success: Boolean(shadowDecision.prefer),
+          reason: shadowDecision.reason,
+          resultCode: String(shadowDecision.resultCode || ""),
+          shadowRevision: Number(shadowSnapshot.revision || 0),
+          officialRevision: snapshotRevision,
+          at: Date.now(),
+        },
+      });
+    }
+    if (shadowSnapshot && shadowDecision?.prefer) {
+      return applyShadowSnapshotToRuntime(
+        normalizedChatId,
+        shadowSnapshot,
+        {
+          source: `${source}:shadow-newer-than-indexeddb`,
+          attemptIndex,
+        },
+      );
+    }
     const shouldAllowOverride =
       allowOverride ||
       BME_INDEXEDDB_FALLBACK_LOAD_STATE_SET.has(
@@ -5193,7 +5418,10 @@ function deferAutoExtraction(
     ? Math.max(0, Math.floor(Number(pendingAutoExtraction.attempts) || 0))
     : 0;
   const nextAttempts = previousAttempts + 1;
-  const resolvedDelayMs = Number.isFinite(Number(delayMs))
+  const resolvedDelayMs =
+    delayMs !== null &&
+    delayMs !== undefined &&
+    Number.isFinite(Number(delayMs))
     ? Math.max(0, Math.floor(Number(delayMs)))
     : AUTO_EXTRACTION_DEFER_RETRY_DELAYS_MS[
         Math.min(
@@ -5272,6 +5500,26 @@ function maybeResumePendingAutoExtraction(source = "auto-extraction-resume") {
     });
   }
 
+  if (isHostGenerationRunning) {
+    return deferAutoExtraction("generation-running", {
+      chatId: pendingChatId,
+      messageId: pendingAutoExtraction.messageId,
+    });
+  }
+
+  const hostGenerationSettleRemainingMs =
+    lastHostGenerationEndedAt > 0
+      ? AUTO_EXTRACTION_HOST_SETTLE_MS -
+        (Date.now() - lastHostGenerationEndedAt)
+      : 0;
+  if (hostGenerationSettleRemainingMs > 0) {
+    return deferAutoExtraction("generation-settling", {
+      chatId: pendingChatId,
+      messageId: pendingAutoExtraction.messageId,
+      delayMs: hostGenerationSettleRemainingMs,
+    });
+  }
+
   if (isRecoveringHistory) {
     return deferAutoExtraction("history-recovering", {
       chatId: pendingChatId,
@@ -5295,6 +5543,31 @@ function maybeResumePendingAutoExtraction(source = "auto-extraction-resume") {
     });
   }
 
+  const resumeContext = getContext();
+  const resumeChat = resumeContext?.chat;
+  if (
+    Array.isArray(resumeChat) &&
+    Number.isFinite(Number(pendingAutoExtraction.messageId))
+  ) {
+    const pendingMessageIndex = Math.floor(
+      Number(pendingAutoExtraction.messageId),
+    );
+    const pendingMessage = resumeChat[pendingMessageIndex];
+    if (
+      isAssistantChatMessage(pendingMessage, {
+        index: pendingMessageIndex,
+        chat: resumeChat,
+      }) &&
+      !String(pendingMessage?.mes ?? "").trim()
+    ) {
+      return deferAutoExtraction("assistant-message-empty", {
+        chatId: pendingChatId,
+        messageId: pendingMessageIndex,
+        delayMs: AUTO_EXTRACTION_HOST_SETTLE_MS,
+      });
+    }
+  }
+
   const pendingRequest = { ...pendingAutoExtraction };
   clearPendingAutoExtraction();
   console.debug?.("[ST-BME] resuming pending auto extraction", {
@@ -6607,6 +6880,7 @@ function loadGraphFromChat(options = {}) {
   const context = getContext();
   const chatIdentity = resolveCurrentChatIdentity(context);
   const chatId = chatIdentity.chatId;
+  const shadowSnapshot = resolveCompatibleGraphShadowSnapshot(chatIdentity);
   const normalizedExpectedChatId = String(expectedChatId || "");
   if (attemptIndex === 0) {
     clearPendingGraphLoadRetry();
@@ -6757,7 +7031,6 @@ function loadGraphFromChat(options = {}) {
         normalizeGraphRuntimeState(deserializeGraph(savedData), chatId),
         chatId,
       );
-      const shadowSnapshot = resolveCompatibleGraphShadowSnapshot(chatIdentity);
       const shadowDecision = shouldPreferShadowSnapshotOverOfficial(
         officialGraph,
         shadowSnapshot,
@@ -6827,6 +7100,14 @@ function loadGraphFromChat(options = {}) {
         });
       }
 
+      if (shadowSnapshot && shadowDecision?.prefer) {
+        clearPendingGraphLoadRetry();
+        return applyShadowSnapshotToRuntime(chatId, shadowSnapshot, {
+          source: `${source}:metadata-shadow`,
+          attemptIndex,
+        });
+      }
+
       clearPendingGraphLoadRetry();
       currentGraph = officialGraph;
       stampGraphPersistenceMeta(currentGraph, {
@@ -6929,6 +7210,14 @@ function loadGraphFromChat(options = {}) {
     }
   }
 
+  if (shadowSnapshot) {
+    clearPendingGraphLoadRetry();
+    return applyShadowSnapshotToRuntime(chatId, shadowSnapshot, {
+      source: `${source}:shadow-no-official`,
+      attemptIndex,
+    });
+  }
+
   applyGraphLoadState(GRAPH_LOAD_STATES.LOADING, {
     chatId,
     reason: `indexeddb-probe-pending:${String(source || "direct-load")}`,
@@ -7043,6 +7332,37 @@ async function saveGraphToIndexedDb(
         at: Date.now(),
       },
     });
+    if (
+      graphPersistenceState.loadState === GRAPH_LOAD_STATES.SHADOW_RESTORED &&
+      areChatIdsEquivalentForResolvedIdentity(
+        normalizedChatId,
+        graphPersistenceState.chatId || getCurrentChatId(),
+      )
+    ) {
+      applyGraphLoadState(GRAPH_LOAD_STATES.LOADED, {
+        chatId: normalizedChatId,
+        reason: `shadow-promoted:${String(reason || "graph-save")}`,
+        revision: snapshot.meta.revision,
+        lastPersistedRevision: snapshot.meta.revision,
+        queuedPersistRevision: 0,
+        queuedPersistChatId: "",
+        pendingPersist: false,
+        shadowSnapshotUsed: true,
+        shadowSnapshotRevision: Math.max(
+          Number(graphPersistenceState.shadowSnapshotRevision || 0),
+          snapshot.meta.revision,
+        ),
+        shadowSnapshotUpdatedAt: String(
+          graphPersistenceState.shadowSnapshotUpdatedAt || "",
+        ),
+        shadowSnapshotReason: String(
+          graphPersistenceState.shadowSnapshotReason ||
+            "shadow-restore-promoted",
+        ),
+        dbReady: true,
+        writesBlocked: false,
+      });
+    }
     rememberResolvedGraphIdentityAlias(getContext(), normalizedChatId);
 
     return {
@@ -7268,11 +7588,23 @@ function saveGraphToChat(options = {}) {
 }
 
 function handleGraphShadowSnapshotPageHide() {
+  saveGraphToChat({
+    reason: "pagehide-passive-persist",
+    markMutation: false,
+    captureShadow: true,
+    immediate: false,
+  });
   maybeCaptureGraphShadowSnapshot("pagehide");
 }
 
 function handleGraphShadowSnapshotVisibilityChange() {
   if (document.visibilityState === "hidden") {
+    saveGraphToChat({
+      reason: "visibility-hidden-passive-persist",
+      markMutation: false,
+      captureShadow: true,
+      immediate: false,
+    });
     maybeCaptureGraphShadowSnapshot("visibility-hidden");
   }
 }
@@ -9013,9 +9345,10 @@ function inspectHistoryMutation(
     Array.isArray(chat) &&
     currentGraph.historyState?.processedMessageHashesNeedRefresh === true
   ) {
-    updateProcessedHistorySnapshot(
+    rebindProcessedHistoryStateToChat(
+      currentGraph,
       chat,
-      currentGraph.historyState.lastProcessedAssistantFloor ?? -1,
+      getAssistantTurns(chat),
     );
     console.debug?.(
       "[ST-BME] refreshed processed message hashes after hash-version migration",
@@ -10104,6 +10437,8 @@ async function runRecall(options = {}) {
 // ==================== 事件钩子 ====================
 
 function onChatChanged() {
+  isHostGenerationRunning = false;
+  lastHostGenerationEndedAt = 0;
   if (typeof clearMessageHideState === "function") {
     clearMessageHideState("chat-changed");
   }
@@ -10211,13 +10546,15 @@ function onUserMessageRendered(messageId = null) {
 }
 
 function onCharacterMessageRendered(messageId = null, type = "") {
-  return onCharacterMessageRenderedController(
+  const result = onCharacterMessageRenderedController(
     {
       refreshPersistedRecallMessageUi: schedulePersistedRecallMessageUiRefresh,
     },
     messageId,
     type,
   );
+  void maybeResumePendingAutoExtraction("character-message-rendered");
+  return result;
 }
 
 function onMessageDeleted(chatLengthOrMessageId, meta = null) {
@@ -10270,6 +10607,16 @@ async function onMessageSwiped(messageId, meta = null) {
 }
 
 function onGenerationStarted(type, params = {}, dryRun = false) {
+  const generationType = String(type || "normal").trim() || "normal";
+  if (
+    !dryRun &&
+    !params?.automatic_trigger &&
+    !params?.quiet_prompt &&
+    generationType === "normal"
+  ) {
+    isHostGenerationRunning = true;
+    lastHostGenerationEndedAt = 0;
+  }
   return onGenerationStartedController(
     {
       clearDryRunPromptPreview,
@@ -10293,6 +10640,8 @@ function onGenerationStarted(type, params = {}, dryRun = false) {
 }
 
 function onGenerationEnded(_chatLength = null) {
+  isHostGenerationRunning = false;
+  lastHostGenerationEndedAt = Date.now();
   const recentTransaction = findRecentGenerationRecallTransactionForChat();
   const recentRecallResult =
     getGenerationRecallTransactionResult(recentTransaction);
@@ -10307,6 +10656,7 @@ function onGenerationEnded(_chatLength = null) {
       "",
   });
   schedulePersistedRecallMessageUiRefresh(320);
+  void maybeResumePendingAutoExtraction("generation-ended");
   if (typeof scheduleMessageHideApply === "function") {
     scheduleMessageHideApply("generation-ended", 180);
   }
@@ -10362,9 +10712,11 @@ function onMessageReceived(messageId = null, type = "") {
     console,
     consumeCurrentGenerationTrivialSkip,
     createRecallInputRecord,
+    deferAutoExtraction,
     getContext,
     getCurrentGraph: () => currentGraph,
     getGraphPersistenceState: () => graphPersistenceState,
+    getIsHostGenerationRunning: () => isHostGenerationRunning,
     getPendingHostGenerationInputSnapshot,
     getPendingRecallSendIntent: () => pendingRecallSendIntent,
     isAssistantChatMessage,
@@ -10519,10 +10871,13 @@ async function onImportGraph() {
     clearTimeout,
     document,
     ensureGraphMutationReady,
+    getAssistantTurns,
+    getContext,
     getCurrentChatId,
     importGraph,
     markVectorStateDirty,
     normalizeGraphRuntimeState,
+    rebindProcessedHistoryStateToChat,
     saveGraphToChat,
     setCurrentGraph: (graph) => {
       currentGraph = graph;
diff --git a/runtime-state.js b/runtime-state.js
index 9dbf7d4..61bbbdf 100644
--- a/runtime-state.js
+++ b/runtime-state.js
@@ -278,6 +278,72 @@ export function snapshotProcessedMessageHashes(
   return result;
 }
 
+export function rebindProcessedHistoryStateToChat(
+  graph,
+  chat,
+  assistantTurns = [],
+) {
+  if (!graph || typeof graph !== "object") {
+    return {
+      rebound: false,
+      reason: "missing-graph",
+      lastProcessedAssistantFloor: -1,
+      maxAssistantFloor: -1,
+      clamped: false,
+    };
+  }
+
+  const historyState =
+    graph.historyState && typeof graph.historyState === "object"
+      ? graph.historyState
+      : createDefaultHistoryState();
+  graph.historyState = historyState;
+
+  const normalizedAssistantTurns = Array.isArray(assistantTurns)
+    ? assistantTurns
+        .map((value) => Number.parseInt(value, 10))
+        .filter(Number.isFinite)
+        .sort((a, b) => a - b)
+    : [];
+  const maxAssistantFloor =
+    normalizedAssistantTurns.length > 0
+      ? normalizedAssistantTurns[normalizedAssistantTurns.length - 1]
+      : -1;
+  const rawLastProcessedAssistantFloor = Number.isFinite(
+    historyState.lastProcessedAssistantFloor,
+  )
+    ? Math.floor(historyState.lastProcessedAssistantFloor)
+    : -1;
+
+  let safeLastProcessedAssistantFloor = rawLastProcessedAssistantFloor;
+  if (!Array.isArray(chat) || chat.length === 0 || maxAssistantFloor < 0) {
+    safeLastProcessedAssistantFloor = -1;
+  } else if (safeLastProcessedAssistantFloor > maxAssistantFloor) {
+    safeLastProcessedAssistantFloor = maxAssistantFloor;
+  }
+
+  historyState.lastProcessedAssistantFloor = safeLastProcessedAssistantFloor;
+  historyState.processedMessageHashVersion = PROCESSED_MESSAGE_HASH_VERSION;
+  historyState.processedMessageHashes =
+    safeLastProcessedAssistantFloor >= 0
+      ? snapshotProcessedMessageHashes(chat, safeLastProcessedAssistantFloor)
+      : {};
+  historyState.processedMessageHashesNeedRefresh = false;
+  graph.lastProcessedSeq = safeLastProcessedAssistantFloor;
+
+  return {
+    rebound: true,
+    reason:
+      safeLastProcessedAssistantFloor < 0
+        ? "no-processed-assistant-floor"
+        : "ok",
+    lastProcessedAssistantFloor: safeLastProcessedAssistantFloor,
+    maxAssistantFloor,
+    clamped:
+      safeLastProcessedAssistantFloor !== rawLastProcessedAssistantFloor,
+  };
+}
+
 export function detectHistoryMutation(chat, historyState) {
   const lastProcessedAssistantFloor =
     historyState?.lastProcessedAssistantFloor ?? -1;
diff --git a/tests/chat-history.mjs b/tests/chat-history.mjs
index 0b1b6a3..7a06920 100644
--- a/tests/chat-history.mjs
+++ b/tests/chat-history.mjs
@@ -87,6 +87,34 @@ assert.deepEqual(
   "extraction should keep BME-managed hidden context but still skip real system messages",
 );
 
+const blankAssistantChat = [
+  { is_user: false, is_system: true, mes: "greeting/system" },
+  { is_user: true, is_system: false, mes: "user-1" },
+  { is_user: false, is_system: false, mes: "   " },
+  { is_user: true, is_system: false, mes: "<plot>secret</plot>" },
+  { is_user: false, is_system: false, mes: "assistant-2" },
+];
+
+assert.deepEqual(
+  getAssistantTurns(blankAssistantChat),
+  [4],
+  "blank assistant floors should not be treated as extractable turns",
+);
+assert.deepEqual(
+  buildExtractionMessages(blankAssistantChat, 4, 4, {
+    extractContextTurns: 3,
+  }).map((message) => ({
+    seq: message.seq,
+    role: message.role,
+    content: message.content,
+  })),
+  [
+    { seq: 1, role: "user", content: "user-1" },
+    { seq: 4, role: "assistant", content: "assistant-2" },
+  ],
+  "blank assistant text and planner-tag-only user text should be skipped",
+);
+
 resetHideState();
 const autoHiddenChat = [
   { is_user: false, is_system: true, mes: "greeting/system" },
diff --git a/tests/graph-persistence.mjs b/tests/graph-persistence.mjs
index 98417b4..39c5d2d 100644
--- a/tests/graph-persistence.mjs
+++ b/tests/graph-persistence.mjs
@@ -1641,13 +1641,16 @@ result = {
     source: "shadow-test",
   });
 
-  assert.equal(result.loadState, "loading");
-  assert.equal(reader.api.getCurrentGraph(), null);
+  assert.equal(result.loadState, "shadow-restored");
+  assert.equal(
+    reader.api.getCurrentGraph().nodes[0]?.fields?.title,
+    "事件-shadow",
+  );
   assert.equal(
     reader.api.getGraphPersistenceLiveState().shadowSnapshotUsed,
-    false,
+    true,
   );
-  assert.equal(reader.api.getGraphPersistenceLiveState().writesBlocked, true);
+  assert.equal(reader.api.getGraphPersistenceLiveState().writesBlocked, false);
 }
 
 {
@@ -1949,7 +1952,7 @@ result = {
   });
   const live = reader.api.getGraphPersistenceLiveState();
 
-  assert.equal(result.loadState, "loading");
+  assert.equal(result.loadState, "shadow-restored");
   assert.equal(
     reader.runtimeContext.__chatContext.chatMetadata?.st_bme_graph?.nodes
       ?.length,
@@ -1961,8 +1964,8 @@ result = {
   );
   assert.equal(reader.runtimeContext.__contextImmediateSaveCalls, 0);
   assert.equal(reader.runtimeContext.__contextSaveCalls, 0);
-  assert.equal(live.lastPersistedRevision, 0);
-  assert.equal(live.pendingPersist, false);
+  assert.equal(live.lastPersistedRevision, 9);
+  assert.equal(live.pendingPersist, true);
 }
 
 {
@@ -2102,7 +2105,7 @@ result = {
     source: "load-shadow-decoupled",
   });
 
-  assert.equal(result.loadState, "loading");
+  assert.equal(result.loadState, "shadow-restored");
   const runtimeGraph = reader.api.getCurrentGraph();
   const persistedGraph =
     reader.runtimeContext.__chatContext.chatMetadata.st_bme_graph;
@@ -2113,6 +2116,10 @@ result = {
   );
 
   runtimeGraph.nodes[0].fields.title = "runtime-shadow-mutated";
+  assert.equal(
+    runtimeGraph.nodes[0].fields.title,
+    "runtime-shadow-mutated",
+  );
   assert.equal(
     persistedGraph.nodes[0].fields.title,
     "事件-official-older",
@@ -2355,6 +2362,65 @@ result = {
   );
 }
 
+{
+  const sharedSession = new Map();
+  const writer = await createGraphPersistenceHarness({
+    chatId: "chat-indexeddb-shadow-restore",
+    globalChatId: "chat-indexeddb-shadow-restore",
+    sessionStore: sharedSession,
+  });
+  writer.api.writeGraphShadowSnapshot(
+    "chat-indexeddb-shadow-restore",
+    createMeaningfulGraph("chat-indexeddb-shadow-restore", "shadow-newer"),
+    {
+      revision: 9,
+      reason: "pagehide-refresh",
+    },
+  );
+
+  const indexedDbGraph = stampPersistedGraph(
+    createMeaningfulGraph("chat-indexeddb-shadow-restore", "indexeddb-older"),
+    {
+      revision: 4,
+      integrity: "meta-indexeddb-shadow-restore",
+      chatId: "chat-indexeddb-shadow-restore",
+      reason: "indexeddb-older",
+    },
+  );
+  const indexedDbSnapshot = buildSnapshotFromGraph(indexedDbGraph, {
+    chatId: "chat-indexeddb-shadow-restore",
+    revision: 4,
+  });
+
+  const harness = await createGraphPersistenceHarness({
+    chatId: "chat-indexeddb-shadow-restore",
+    globalChatId: "chat-indexeddb-shadow-restore",
+    indexedDbSnapshot,
+    sessionStore: sharedSession,
+  });
+
+  const result = await harness.api.loadGraphFromIndexedDb(
+    "chat-indexeddb-shadow-restore",
+    {
+      source: "indexeddb-shadow-restore",
+      allowOverride: true,
+      applyEmptyState: true,
+    },
+  );
+
+  assert.equal(result.loadState, "shadow-restored");
+  assert.equal(
+    harness.api.getCurrentGraph().nodes[0]?.fields?.title,
+    "事件-shadow-newer",
+  );
+  await new Promise((resolve) => setTimeout(resolve, 0));
+  assert.equal(
+    harness.api.getIndexedDbSnapshot().meta.revision,
+    9,
+    "shadow 恢复后应回补 IndexedDB 修正旧快照",
+  );
+}
+
 {
   const legacyGraph = stampPersistedGraph(
     createMeaningfulGraph("chat-legacy-migration", "legacy"),
diff --git a/tests/helpers/generation-recall-harness.mjs b/tests/helpers/generation-recall-harness.mjs
index 215781a..0022e1e 100644
--- a/tests/helpers/generation-recall-harness.mjs
+++ b/tests/helpers/generation-recall-harness.mjs
@@ -140,6 +140,10 @@ export function createGenerationRecallHarness(options = {}) {
       recordedInjectionSnapshots: [],
       refreshPanelCalls: 0,
       hideScheduleCalls: [],
+      isExtracting: false,
+      isRecoveringHistory: false,
+      isAssistantChatMessage: (message) =>
+        Boolean(message) && !message.is_user && !message.is_system,
       createRecallInputRecord,
       createRecallRunResult,
       hashRecallInput,
@@ -215,7 +219,7 @@ export function createGenerationRecallHarness(options = {}) {
     };
     vm.createContext(context);
     vm.runInContext(
-      `${snippet}\nresult = { hashRecallInput, buildPreGenerationRecallKey, buildGenerationAfterCommandsRecallInput, buildNormalGenerationRecallInput, cleanupGenerationRecallTransactions, buildGenerationRecallTransactionId, beginGenerationRecallTransaction, markGenerationRecallTransactionHookState, shouldRunRecallForTransaction, createGenerationRecallContext, onGenerationStarted, onGenerationEnded, onGenerationAfterCommands, onBeforeCombinePrompts, applyFinalRecallInjectionForGeneration, ensurePersistedRecallRecordForGeneration, findRecentGenerationRecallTransactionForChat, getGenerationRecallTransactionResult, generationRecallTransactions, freezeHostGenerationInputSnapshot, consumeHostGenerationInputSnapshot, getPendingHostGenerationInputSnapshot, clearPendingHostGenerationInputSnapshot, recordRecallSendIntent, clearPendingRecallSendIntent, recordRecallSentUserMessage, getPendingRecallSendIntent: () => pendingRecallSendIntent, getLastRecallSentUserMessage: () => lastRecallSentUserMessage, getCurrentGenerationTrivialSkip, markCurrentGenerationTrivialSkip, clearCurrentGenerationTrivialSkip, consumeCurrentGenerationTrivialSkip, runPlannerRecallForEna, getGraphPersistenceState: () => graphPersistenceState, setGraphPersistenceState: (value = {}) => { graphPersistenceState = { ...graphPersistenceState, ...(value || {}) }; return graphPersistenceState; } };`,
+      `${snippet}\nresult = { hashRecallInput, buildPreGenerationRecallKey, buildGenerationAfterCommandsRecallInput, buildNormalGenerationRecallInput, cleanupGenerationRecallTransactions, buildGenerationRecallTransactionId, beginGenerationRecallTransaction, markGenerationRecallTransactionHookState, shouldRunRecallForTransaction, createGenerationRecallContext, onGenerationStarted, onGenerationEnded, onGenerationAfterCommands, onBeforeCombinePrompts, applyFinalRecallInjectionForGeneration, ensurePersistedRecallRecordForGeneration, findRecentGenerationRecallTransactionForChat, getGenerationRecallTransactionResult, generationRecallTransactions, freezeHostGenerationInputSnapshot, consumeHostGenerationInputSnapshot, getPendingHostGenerationInputSnapshot, clearPendingHostGenerationInputSnapshot, recordRecallSendIntent, clearPendingRecallSendIntent, recordRecallSentUserMessage, getPendingRecallSendIntent: () => pendingRecallSendIntent, getLastRecallSentUserMessage: () => lastRecallSentUserMessage, getCurrentGenerationTrivialSkip, markCurrentGenerationTrivialSkip, clearCurrentGenerationTrivialSkip, consumeCurrentGenerationTrivialSkip, deferAutoExtraction, maybeResumePendingAutoExtraction, clearPendingAutoExtraction, getPendingAutoExtraction: () => ({ ...pendingAutoExtraction }), getIsHostGenerationRunning: () => isHostGenerationRunning, runPlannerRecallForEna, getGraphPersistenceState: () => graphPersistenceState, setGraphPersistenceState: (value = {}) => { graphPersistenceState = { ...graphPersistenceState, ...(value || {}) }; return graphPersistenceState; } };`,
       context,
       { filename: indexPath },
     );
@@ -322,9 +326,12 @@ export function createGenerationRecallHarness(options = {}) {
           consumeCurrentGenerationTrivialSkip:
             context.result.consumeCurrentGenerationTrivialSkip,
           createRecallInputRecord,
+          deferAutoExtraction: context.result.deferAutoExtraction,
           getContext: context.getContext,
           getCurrentGraph: () => context.currentGraph,
           getGraphPersistenceState: () => context.result.getGraphPersistenceState(),
+          getIsHostGenerationRunning: () =>
+            context.result.getIsHostGenerationRunning(),
           getPendingHostGenerationInputSnapshot:
             context.result.getPendingHostGenerationInputSnapshot,
           getPendingRecallSendIntent: () => context.result.getPendingRecallSendIntent(),
diff --git a/tests/p0-regressions.mjs b/tests/p0-regressions.mjs
index 04c9fa8..3805ef2 100644
--- a/tests/p0-regressions.mjs
+++ b/tests/p0-regressions.mjs
@@ -3716,6 +3716,89 @@ async function testMessageReceivedQueuesExtractionWithoutRuntimeQueueMicrotask()
   assert.equal(refreshCalls, 1);
 }
 
+async function testMessageReceivedDefersExtractionDuringHostGeneration() {
+  let runExtractionCalls = 0;
+  const deferred = [];
+
+  onMessageReceivedController(
+    {
+      getGraphPersistenceState: () => ({ loadState: "loaded", dbReady: true }),
+      getCurrentGraph: () => null,
+      getPendingRecallSendIntent: () => ({ text: "", at: 0 }),
+      getIsHostGenerationRunning: () => true,
+      isFreshRecallInputRecord: () => true,
+      createRecallInputRecord: () => ({ text: "", at: 0 }),
+      deferAutoExtraction(reason, meta = {}) {
+        deferred.push({
+          reason,
+          messageId: Number.isFinite(Number(meta?.messageId))
+            ? Number(meta.messageId)
+            : null,
+        });
+      },
+      setPendingRecallSendIntent() {},
+      getContext: () => ({
+        chat: [
+          { is_user: true, mes: "u1" },
+          { is_user: false, mes: "a1" },
+        ],
+      }),
+      isAssistantChatMessage(message) {
+        return Boolean(message) && !message.is_user && !message.is_system;
+      },
+      runExtraction: async () => {
+        runExtractionCalls += 1;
+      },
+      console: {
+        error() {},
+      },
+      notifyExtractionIssue() {},
+      refreshPersistedRecallMessageUi() {},
+    },
+    1,
+    "assistant",
+  );
+
+  await waitForTick();
+
+  assert.equal(runExtractionCalls, 0);
+  assert.deepEqual(deferred, [
+    {
+      reason: "generation-running",
+      messageId: 1,
+    },
+  ]);
+}
+
+async function testGenerationEndedResumesPendingAutoExtractionAfterSettle() {
+  const harness = await createGenerationRecallHarness();
+  harness.chat = [
+    { is_user: true, mes: "u1" },
+    { is_user: false, mes: "streaming response" },
+  ];
+  harness.result.setGraphPersistenceState({
+    loadState: "loaded",
+    dbReady: true,
+    chatId: "chat-main",
+  });
+
+  harness.result.onGenerationStarted("normal", {}, false);
+  harness.invokeOnMessageReceived(1, "assistant");
+  await waitForTick();
+
+  assert.equal(harness.runExtractionCalls.length, 0);
+  assert.equal(
+    harness.result.getPendingAutoExtraction().reason,
+    "generation-running",
+  );
+
+  harness.result.onGenerationEnded();
+  await new Promise((resolve) => setTimeout(resolve, 180));
+
+  assert.equal(harness.runExtractionCalls.length, 1);
+  harness.result.clearPendingAutoExtraction();
+}
+
 async function testAutoExtractionDefersWhenGraphNotReady() {
   const deferredReasons = [];
   const statuses = [];
@@ -5671,6 +5754,8 @@ await testMessageSentFallsBackToLatestUserWhenHostMessageIdInvalid();
 await testUserMessageRenderedRefreshesRecallUiAfterRealDomRender();
 await testCharacterMessageRenderedRefreshesRecallUiAfterAssistantRender();
 await testMessageReceivedQueuesExtractionWithoutRuntimeQueueMicrotask();
+await testMessageReceivedDefersExtractionDuringHostGeneration();
+await testGenerationEndedResumesPendingAutoExtractionAfterSettle();
 await testAutoExtractionDefersWhenGraphNotReady();
 await testAutoExtractionDefersWhenAlreadyExtracting();
 await testAutoExtractionDefersWhenHistoryRecoveryBusy();
diff --git a/tests/runtime-history.mjs b/tests/runtime-history.mjs
index f0d0981..529ffc7 100644
--- a/tests/runtime-history.mjs
+++ b/tests/runtime-history.mjs
@@ -7,6 +7,7 @@ import {
   findJournalRecoveryPoint,
   normalizeGraphRuntimeState,
   PROCESSED_MESSAGE_HASH_VERSION,
+  rebindProcessedHistoryStateToChat,
   rollbackBatch,
   snapshotProcessedMessageHashes,
 } from "../runtime-state.js";
@@ -94,6 +95,28 @@ assert.equal(migratedGraph.historyState.processedMessageHashesNeedRefresh, true)
 const migratedDetection = detectHistoryMutation(chat, migratedGraph.historyState);
 assert.equal(migratedDetection.dirty, false);
 
+const importedGraph = normalizeGraphRuntimeState({
+  historyState: {
+    chatId: "chat-history-test",
+    lastProcessedAssistantFloor: 99,
+    processedMessageHashVersion: PROCESSED_MESSAGE_HASH_VERSION,
+    processedMessageHashes: {},
+    processedMessageHashesNeedRefresh: true,
+  },
+});
+const reboundResult = rebindProcessedHistoryStateToChat(importedGraph, chat, [
+  1,
+  3,
+]);
+assert.equal(reboundResult.rebound, true);
+assert.equal(reboundResult.lastProcessedAssistantFloor, 3);
+assert.equal(reboundResult.clamped, true);
+assert.equal(importedGraph.historyState.processedMessageHashesNeedRefresh, false);
+assert.deepEqual(
+  importedGraph.historyState.processedMessageHashes,
+  snapshotProcessedMessageHashes(chat, 3),
+);
+
 const truncatedChat = chat.slice(0, 2);
 const truncatedDetection = detectHistoryMutation(truncatedChat, {
   lastProcessedAssistantFloor: 3,
diff --git a/ui-actions-controller.js b/ui-actions-controller.js
index c792576..a6236bc 100644
--- a/ui-actions-controller.js
+++ b/ui-actions-controller.js
@@ -126,6 +126,35 @@ function updateManualActionUiState(runtime, text, meta = "", level = "idle") {
   runtime?.refreshPanelLiveState?.();
 }
 
+function rebindImportedGraphToCurrentChat(runtime, importedGraph) {
+  if (!importedGraph || typeof importedGraph !== "object") {
+    return {
+      rebound: false,
+      reason: "missing-graph",
+    };
+  }
+
+  const chat = runtime.getContext?.()?.chat;
+  const assistantTurns =
+    typeof runtime.getAssistantTurns === "function" && Array.isArray(chat)
+      ? runtime.getAssistantTurns(chat)
+      : [];
+
+  if (typeof runtime.rebindProcessedHistoryStateToChat === "function") {
+    return runtime.rebindProcessedHistoryStateToChat(
+      importedGraph,
+      chat,
+      assistantTurns,
+    );
+  }
+
+  importedGraph.historyState.processedMessageHashesNeedRefresh = true;
+  return {
+    rebound: false,
+    reason: "missing-history-rebind-helper",
+  };
+}
+
 export async function onViewGraphController(runtime) {
   const graph = runtime.getCurrentGraph();
   if (!graph) {
@@ -497,14 +526,24 @@ export async function onImportGraphController(runtime) {
           runtime.importGraph(text),
           runtime.getCurrentChatId(),
         );
+        const historyRebind = rebindImportedGraphToCurrentChat(
+          runtime,
+          importedGraph,
+        );
         runtime.setCurrentGraph(importedGraph);
         runtime.markVectorStateDirty("导入图谱后需要重建向量索引");
-        runtime.setExtractionCount(0);
+        runtime.setExtractionCount(
+          Math.max(0, Number(importedGraph?.historyState?.extractionCount) || 0),
+        );
         runtime.setLastExtractedItems([]);
         runtime.updateLastRecalledItems(importedGraph.lastRecallResult || []);
         runtime.clearInjectionState();
         runtime.saveGraphToChat({ reason: "graph-import-complete" });
-        runtime.toastr.success("图谱已导入");
+        runtime.toastr.success(
+          historyRebind?.rebound === true
+            ? "图谱已导入，并已重新绑定当前聊天历史"
+            : "图谱已导入",
+        );
         finish({ imported: true, handledToast: true });
       } catch (err) {
         const error =