diff --git a/modules/story-summary/generate/prompt.js b/modules/story-summary/generate/prompt.js
index fa6dc75..95e8724 100644
--- a/modules/story-summary/generate/prompt.js
+++ b/modules/story-summary/generate/prompt.js
@@ -1,17 +1,15 @@
 // ═══════════════════════════════════════════════════════════════════════════
-// Story Summary - Prompt Injection (v5 - Two-Stage: L0 Locate → L1 Evidence)
+// Story Summary - Prompt Injection (v6 - EvidenceGroup: per-floor L0 + shared L1)
 //
 // 命名规范：
 // - 存储层用 L0/L1/L2/L3（StateAtom/Chunk/Event/Fact）
 // - 装配层用语义名称：constraint/event/evidence/arc
 //
-// 架构变更（v4 → v5）：
-// - L0 和 L1 不再在同一个池子竞争
-// - recall.js 返回 {l0Selected[], l1ByFloor: Map} 而非 evidenceChunks[]
-// - 装配层按 L2→L0→L1 层级组织
-// - 预算以"L0 + USER top-1 + AI top-1"为原子单元
-// - 孤立 L1（无对应 L0）丢弃
-// - 孤立 L0（无对应 L1）保留
+// 架构变更（v5 → v6）：
+// - 同楼层多个 L0 共享一对 L1（EvidenceGroup per-floor）
+// - L0 展示文本从 semantic 字段改为从结构字段（type/subject/object/value/location）拼接
+// - 移除 <type> 标签和 [tags] theme 标签，输出自然语言短句
+// - 短行分号拼接，长行换行（120字阈值）
 //
 // 职责：
 // - 仅负责"构建注入文本"，不负责写入 extension_prompts
@@ -24,6 +22,7 @@ import { getSummaryStore, getFacts, isRelationFact } from "../data/store.js";
 import { getVectorConfig, getSummaryPanelConfig, getSettings } from "../data/config.js";
 import { recallMemory } from "../vector/retrieval/recall.js";
 import { getMeta } from "../vector/storage/chunk-store.js";
+import { getEngineFingerprint } from "../vector/utils/embedder.js";
 
 // Metrics
 import { formatMetricsLog, detectIssues } from "../vector/retrieval/metrics.js";
@@ -56,6 +55,9 @@ const CONSTRAINT_MAX = 2000;
 const ARCS_MAX = 1500;
 const TOP_N_STAR = 5;
 
+// L0 显示文本：分号拼接 vs 多行模式的阈值
+const L0_JOINED_MAX_LENGTH = 120;
+
 // ─────────────────────────────────────────────────────────────────────────────
 // 工具函数
 // ─────────────────────────────────────────────────────────────────────────────
@@ -295,16 +297,88 @@ function formatArcLine(arc) {
 }
 
 /**
- * 格式化 L0 锚点行
- * @param {object} l0 - L0 对象
- * @returns {string} 格式化后的行
+ * 从 atom 结构字段生成可读短句（不依赖 semantic 字段）
+ *
+ * 规则：
+ * - act: 主体+谓词+客体
+ * - emo: 主体+谓词+(对客体)
+ * - rev: 揭示：谓词+(关于客体)
+ * - dec: 主体+谓词+(对客体)
+ * - ten: 主体与客体之间：谓词
+ * - loc: 场景：地点或谓词
+ * - 地点非空且非 loc 类型时后缀 "在{location}"
+ *
+ * @param {object} l0 - L0 对象（含 l0.atom）
+ * @returns {string} 可读短句
  */
-function formatL0Line(l0) {
-    return `  › #${l0.floor + 1} [📌] ${String(l0.text || l0.atom?.semantic || "").trim()}`;
+function buildL0DisplayText(l0) {
+    const atom = l0.atom || l0._atom || {};
+    const type = atom.type || 'act';
+    const subject = String(atom.subject || '').trim();
+    const object = String(atom.object || '').trim();
+    const value = String(atom.value || '').trim();
+    const location = String(atom.location || '').trim();
+
+    if (!value && !subject) {
+        // 兜底：如果结构字段缺失，回退到 semantic 并剥离标签
+        const semantic = String(atom.semantic || l0.text || '').trim();
+        return semantic
+            .replace(/^<\w+>\s*/, '')
+            .replace(/\s*\[[\w/]+\]\s*$/, '')
+            .trim() || '（未知锚点）';
+    }
+
+    let result = '';
+
+    switch (type) {
+        case 'emo':
+            result = `${subject}${value}`;
+            if (object) result += `(对${object})`;
+            break;
+
+        case 'act':
+            result = `${subject}${value}`;
+            if (object) result += ` → ${object}`;
+            break;
+
+        case 'rev':
+            result = `揭示：${value}`;
+            if (object) result += `(关于${object})`;
+            break;
+
+        case 'dec':
+            result = `${subject}${value}`;
+            if (object) result += `(对${object})`;
+            break;
+
+        case 'ten':
+            if (object) {
+                result = `${subject}与${object}之间：${value}`;
+            } else {
+                result = `${subject}：${value}`;
+            }
+            break;
+
+        case 'loc':
+            result = `场景：${location || value}`;
+            break;
+
+        default:
+            result = `${subject}${value}`;
+            if (object) result += ` → ${object}`;
+            break;
+    }
+
+    // 地点后缀（loc 类型已包含地点，不重复）
+    if (location && type !== 'loc') {
+        result += ` 在${location}`;
+    }
+
+    return result.trim();
 }
 
 /**
- * 格式化 L1 chunk 行（挂在 L0 下方）
+ * 格式化 L1 chunk 行
  * @param {object} chunk - L1 chunk 对象
  * @param {boolean} isContext - 是否为上下文（USER 侧）
  * @returns {string} 格式化后的行
@@ -344,99 +418,177 @@ function formatCausalEventLine(causalItem) {
 }
 
 // ─────────────────────────────────────────────────────────────────────────────
-// L0→L1 证据单元构建
+// L0 按楼层分组
 // ─────────────────────────────────────────────────────────────────────────────
 
 /**
- * @typedef {object} EvidenceUnit
- * @property {object} l0 - L0 锚点对象
- * @property {object|null} userL1 - USER 侧 top-1 L1 chunk
- * @property {object|null} aiL1 - AI 侧 top-1 L1 chunk
- * @property {number} totalTokens - 整个单元的 token 估算
+ * 将 L0 列表按楼层分组
+ * @param {object[]} l0List - L0 对象列表
+ * @returns {Map<number, object[]>} floor → L0 数组
+ */
+function groupL0ByFloor(l0List) {
+    const map = new Map();
+    for (const l0 of l0List) {
+        const floor = l0.floor;
+        if (!map.has(floor)) {
+            map.set(floor, []);
+        }
+        map.get(floor).push(l0);
+    }
+    return map;
+}
+
+// ─────────────────────────────────────────────────────────────────────────────
+// EvidenceGroup（per-floor：N个L0 + 共享一对L1）
+// ─────────────────────────────────────────────────────────────────────────────
+
+/**
+ * @typedef {object} EvidenceGroup
+ * @property {number} floor - 楼层号
+ * @property {object[]} l0Atoms - 该楼层所有被选中的 L0
+ * @property {object|null} userL1 - USER 侧 top-1 L1 chunk（仅一份）
+ * @property {object|null} aiL1 - AI 侧 top-1 L1 chunk（仅一份）
+ * @property {number} totalTokens - 整组 token 估算
  */
 
 /**
- * 为一个 L0 构建证据单元
- * @param {object} l0 - L0 对象
+ * 为一个楼层构建证据组
+ *
+ * 同楼层多个 L0 共享一对 L1，避免 L1 重复输出。
+ *
+ * @param {number} floor - 楼层号
+ * @param {object[]} l0AtomsForFloor - 该楼层所有被选中的 L0
  * @param {Map<number, object>} l1ByFloor - 楼层→L1配对映射
- * @returns {EvidenceUnit}
+ * @returns {EvidenceGroup}
  */
-function buildEvidenceUnit(l0, l1ByFloor) {
-    const pair = l1ByFloor.get(l0.floor);
+function buildEvidenceGroup(floor, l0AtomsForFloor, l1ByFloor) {
+    const pair = l1ByFloor.get(floor);
     const userL1 = pair?.userTop1 || null;
     const aiL1 = pair?.aiTop1 || null;
 
-    // 预计算整个单元的 token 开销
-    let totalTokens = estimateTokens(formatL0Line(l0));
+    // 计算整组 token 开销
+    let totalTokens = 0;
+
+    // 所有 L0 的显示文本
+    for (const l0 of l0AtomsForFloor) {
+        totalTokens += estimateTokens(buildL0DisplayText(l0));
+    }
+    // 固定开销：楼层前缀、📌 标记、分号等
+    totalTokens += 10;
+
+    // L1 仅算一次
     if (userL1) totalTokens += estimateTokens(formatL1Line(userL1, true));
     if (aiL1) totalTokens += estimateTokens(formatL1Line(aiL1, false));
 
-    return { l0, userL1, aiL1, totalTokens };
+    return { floor, l0Atoms: l0AtomsForFloor, userL1, aiL1, totalTokens };
 }
 
 /**
- * 格式化一个证据单元为文本行
- * @param {EvidenceUnit} unit - 证据单元
+ * 格式化一个证据组为文本行数组
+ *
+ * 短行模式（拼接后 ≤ 120 字）：
+ *   › #500 [📌] 薇薇保持跪趴姿势；薇薇展示细节；薇薇与蓝袖之间：被审视
+ *     ┌ #499 [蓝袖] ...
+ *     › #500 [角色] ...
+ *
+ * 长行模式（拼接后 > 120 字）：
+ *   › #500 [📌] 薇薇保持跪趴姿势 在书房
+ *   │      薇薇展示肛周细节 在书房
+ *   │      薇薇与蓝袖之间：身体被审视 在书房
+ *     ┌ #499 [蓝袖] ...
+ *     › #500 [角色] ...
+ *
+ * @param {EvidenceGroup} group - 证据组
  * @returns {string[]} 文本行数组
  */
-function formatEvidenceUnit(unit) {
+function formatEvidenceGroup(group) {
+    const displayTexts = group.l0Atoms.map(l0 => buildL0DisplayText(l0));
+
     const lines = [];
-    lines.push(formatL0Line(unit.l0));
-    if (unit.userL1) {
-        lines.push(formatL1Line(unit.userL1, true));
+
+    // L0 部分
+    const joined = displayTexts.join('；');
+
+    if (joined.length <= L0_JOINED_MAX_LENGTH) {
+        // 短行：分号拼接为一行
+        lines.push(`  › #${group.floor + 1} [📌] ${joined}`);
+    } else {
+        // 长行：每个 L0 独占一行，首行带楼层号
+        lines.push(`  › #${group.floor + 1} [📌] ${displayTexts[0]}`);
+        for (let i = 1; i < displayTexts.length; i++) {
+            lines.push(`  │      ${displayTexts[i]}`);
+        }
     }
-    if (unit.aiL1) {
-        lines.push(formatL1Line(unit.aiL1, false));
+
+    // L1 证据（仅一次）
+    if (group.userL1) {
+        lines.push(formatL1Line(group.userL1, true));
     }
+    if (group.aiL1) {
+        lines.push(formatL1Line(group.aiL1, false));
+    }
+
     return lines;
 }
 
 // ─────────────────────────────────────────────────────────────────────────────
-// 事件证据收集
+// 事件证据收集（per-floor 分组）
 // ─────────────────────────────────────────────────────────────────────────────
 
 /**
- * 为事件收集范围内的 L0 证据单元
+ * 为事件收集范围内的 EvidenceGroup
+ *
+ * 同楼层多个 L0 归入同一组，共享一对 L1。
+ *
  * @param {object} eventObj - 事件对象
  * @param {object[]} l0Selected - 所有选中的 L0
  * @param {Map<number, object>} l1ByFloor - 楼层→L1配对映射
  * @param {Set<string>} usedL0Ids - 已消费的 L0 ID 集合（会被修改）
- * @returns {EvidenceUnit[]} 该事件的证据单元列表
+ * @returns {EvidenceGroup[]} 该事件的证据组列表（按楼层排序）
  */
-function collectEvidenceForEvent(eventObj, l0Selected, l1ByFloor, usedL0Ids) {
+function collectEvidenceGroupsForEvent(eventObj, l0Selected, l1ByFloor, usedL0Ids) {
     const range = parseFloorRange(eventObj?.summary);
     if (!range) return [];
 
-    const units = [];
+    // 收集范围内未消费的 L0，按楼层分组
+    const floorMap = new Map();
 
     for (const l0 of l0Selected) {
         if (usedL0Ids.has(l0.id)) continue;
         if (l0.floor < range.start || l0.floor > range.end) continue;
 
-        const unit = buildEvidenceUnit(l0, l1ByFloor);
-        units.push(unit);
+        if (!floorMap.has(l0.floor)) {
+            floorMap.set(l0.floor, []);
+        }
+        floorMap.get(l0.floor).push(l0);
         usedL0Ids.add(l0.id);
     }
 
-    // 按楼层排序
-    units.sort((a, b) => a.l0.floor - b.l0.floor);
+    // 构建 groups
+    const groups = [];
+    for (const [floor, l0s] of floorMap) {
+        groups.push(buildEvidenceGroup(floor, l0s, l1ByFloor));
+    }
 
-    return units;
+    // 按楼层排序
+    groups.sort((a, b) => a.floor - b.floor);
+
+    return groups;
 }
 
 // ─────────────────────────────────────────────────────────────────────────────
-// 事件格式化（L2→L0→L1 层级）
+// 事件格式化（L2 → EvidenceGroup 层级）
 // ─────────────────────────────────────────────────────────────────────────────
 
 /**
- * 格式化事件（含 L0→L1 证据）
+ * 格式化事件（含 EvidenceGroup 证据）
  * @param {object} eventItem - 事件召回项
  * @param {number} idx - 编号
- * @param {EvidenceUnit[]} evidenceUnits - 该事件的证据单元
+ * @param {EvidenceGroup[]} evidenceGroups - 该事件的证据组
  * @param {Map<string, object>} causalById - 因果事件索引
  * @returns {string} 格式化后的文本
  */
-function formatEventWithEvidence(eventItem, idx, evidenceUnits, causalById) {
+function formatEventWithEvidence(eventItem, idx, evidenceGroups, causalById) {
     const ev = eventItem.event || {};
     const time = ev.timeLabel || "";
     const title = String(ev.title || "").trim();
@@ -456,9 +608,9 @@ function formatEventWithEvidence(eventItem, idx, evidenceUnits, causalById) {
         if (c) lines.push(formatCausalEventLine(c));
     }
 
-    // L0→L1 证据单元
-    for (const unit of evidenceUnits) {
-        lines.push(...formatEvidenceUnit(unit));
+    // EvidenceGroup 证据
+    for (const group of evidenceGroups) {
+        lines.push(...formatEvidenceGroup(group));
     }
 
     return lines.join("\n");
@@ -673,7 +825,7 @@ async function buildVectorPrompt(store, recallResult, causalById, focusEntities,
     }
 
     // ═══════════════════════════════════════════════════════════════════════
-    // [Events] L2 Events → 直接命中 + 相似命中 + 因果链 + L0→L1 证据
+    // [Events] L2 Events → 直接命中 + 相似命中 + 因果链 + EvidenceGroup
     // ═══════════════════════════════════════════════════════════════════════
     const eventHits = (recallResult?.events || []).filter(e => e?.event?.summary);
 
@@ -689,11 +841,11 @@ async function buildVectorPrompt(store, recallResult, causalById, focusEntities,
 
         const isDirect = e._recallType === "DIRECT";
 
-        // 收集该事件范围内的 L0→L1 证据单元
-        const evidenceUnits = collectEvidenceForEvent(e.event, l0Selected, l1ByFloor, usedL0Ids);
+        // 收集该事件范围内的 EvidenceGroup（per-floor）
+        const evidenceGroups = collectEvidenceGroupsForEvent(e.event, l0Selected, l1ByFloor, usedL0Ids);
 
         // 格式化事件（含证据）
-        const text = formatEventWithEvidence(e, 0, evidenceUnits, causalById);
+        const text = formatEventWithEvidence(e, 0, evidenceGroups, causalById);
         const cost = estimateTokens(text);
 
         // 预算检查：整个事件（含证据）作为原子单元
@@ -703,23 +855,31 @@ async function buildVectorPrompt(store, recallResult, causalById, focusEntities,
             const costNoEvidence = estimateTokens(textNoEvidence);
 
             if (total.used + costNoEvidence > total.max) {
+                // 归还 usedL0Ids
+                for (const group of evidenceGroups) {
+                    for (const l0 of group.l0Atoms) {
+                        usedL0Ids.delete(l0.id);
+                    }
+                }
                 continue;
             }
 
             // 放入不带证据的版本，归还已消费的 L0 ID
-            for (const unit of evidenceUnits) {
-                usedL0Ids.delete(unit.l0.id);
+            for (const group of evidenceGroups) {
+                for (const l0 of group.l0Atoms) {
+                    usedL0Ids.delete(l0.id);
+                }
             }
 
             if (isDirect) {
                 selectedDirect.push({
                     event: e.event, text: textNoEvidence, tokens: costNoEvidence,
-                    evidenceUnits: [], candidateRank,
+                    evidenceGroups: [], candidateRank,
                 });
             } else {
                 selectedRelated.push({
                     event: e.event, text: textNoEvidence, tokens: costNoEvidence,
-                    evidenceUnits: [], candidateRank,
+                    evidenceGroups: [], candidateRank,
                 });
             }
 
@@ -734,36 +894,36 @@ async function buildVectorPrompt(store, recallResult, causalById, focusEntities,
                 tokens: costNoEvidence,
                 similarity: e.similarity || 0,
                 l0Count: 0,
-                l1Count: 0,
+                l1FloorCount: 0,
             });
 
             continue;
         }
 
         // 预算充足，放入完整版本
-        const l0Count = evidenceUnits.length;
-        let l1Count = 0;
-        for (const unit of evidenceUnits) {
-            if (unit.userL1) l1Count++;
-            if (unit.aiL1) l1Count++;
+        let l0Count = 0;
+        let l1FloorCount = 0;
+        for (const group of evidenceGroups) {
+            l0Count += group.l0Atoms.length;
+            if (group.userL1 || group.aiL1) l1FloorCount++;
         }
 
         if (isDirect) {
             selectedDirect.push({
                 event: e.event, text, tokens: cost,
-                evidenceUnits, candidateRank,
+                evidenceGroups, candidateRank,
             });
         } else {
             selectedRelated.push({
                 event: e.event, text, tokens: cost,
-                evidenceUnits, candidateRank,
+                evidenceGroups, candidateRank,
             });
         }
 
         injectionStats.event.selected++;
         injectionStats.event.tokens += cost;
         injectionStats.evidence.l0InEvents += l0Count;
-        injectionStats.evidence.l1InEvents += l1Count;
+        injectionStats.evidence.l1InEvents += l1FloorCount;
         total.used += cost;
 
         eventDetails.list.push({
@@ -773,7 +933,7 @@ async function buildVectorPrompt(store, recallResult, causalById, focusEntities,
             tokens: cost,
             similarity: e.similarity || 0,
             l0Count,
-            l1Count,
+            l1FloorCount,
         });
     }
 
@@ -798,7 +958,7 @@ async function buildVectorPrompt(store, recallResult, causalById, focusEntities,
     assembled.relatedEvents.lines = relatedEventTexts;
 
     // ═══════════════════════════════════════════════════════════════════════
-    // [Evidence - Distant] 远期证据（已总结范围，未被事件消费的 L0→L1）
+    // [Evidence - Distant] 远期证据（已总结范围，未被事件消费的 L0）
     // ═══════════════════════════════════════════════════════════════════════
 
     const lastSummarized = store.lastSummarizedMesId ?? -1;
@@ -816,21 +976,25 @@ async function buildVectorPrompt(store, recallResult, causalById, focusEntities,
     if (distantL0.length && total.used < total.max) {
         const distantBudget = { used: 0, max: Math.min(DISTANT_EVIDENCE_MAX, total.max - total.used) };
 
-        // 按楼层排序（时间顺序）
+        // 按楼层排序（时间顺序）后分组
         distantL0.sort((a, b) => a.floor - b.floor);
+        const distantFloorMap = groupL0ByFloor(distantL0);
 
-        for (const l0 of distantL0) {
-            const unit = buildEvidenceUnit(l0, l1ByFloor);
+        // 按楼层顺序遍历（Map 保持插入顺序，distantL0 已按 floor 排序）
+        for (const [floor, l0s] of distantFloorMap) {
+            const group = buildEvidenceGroup(floor, l0s, l1ByFloor);
 
-            // 原子单元预算检查
-            if (distantBudget.used + unit.totalTokens > distantBudget.max) continue;
+            // 原子组预算检查
+            if (distantBudget.used + group.totalTokens > distantBudget.max) continue;
 
-            const unitLines = formatEvidenceUnit(unit);
-            for (const line of unitLines) {
+            const groupLines = formatEvidenceGroup(group);
+            for (const line of groupLines) {
                 assembled.distantEvidence.lines.push(line);
             }
-            distantBudget.used += unit.totalTokens;
-            usedL0Ids.add(l0.id);
+            distantBudget.used += group.totalTokens;
+            for (const l0 of l0s) {
+                usedL0Ids.add(l0.id);
+            }
             injectionStats.distantEvidence.units++;
         }
 
@@ -854,20 +1018,23 @@ async function buildVectorPrompt(store, recallResult, causalById, focusEntities,
         if (recentL0.length) {
             const recentBudget = { used: 0, max: RECENT_EVIDENCE_MAX };
 
-            // 按楼层排序（时间顺序）
+            // 按楼层排序后分组
             recentL0.sort((a, b) => a.floor - b.floor);
+            const recentFloorMap = groupL0ByFloor(recentL0);
 
-            for (const l0 of recentL0) {
-                const unit = buildEvidenceUnit(l0, l1ByFloor);
+            for (const [floor, l0s] of recentFloorMap) {
+                const group = buildEvidenceGroup(floor, l0s, l1ByFloor);
 
-                if (recentBudget.used + unit.totalTokens > recentBudget.max) continue;
+                if (recentBudget.used + group.totalTokens > recentBudget.max) continue;
 
-                const unitLines = formatEvidenceUnit(unit);
-                for (const line of unitLines) {
+                const groupLines = formatEvidenceGroup(group);
+                for (const line of groupLines) {
                     assembled.recentEvidence.lines.push(line);
                 }
-                recentBudget.used += unit.totalTokens;
-                usedL0Ids.add(l0.id);
+                recentBudget.used += group.totalTokens;
+                for (const l0 of l0s) {
+                    usedL0Ids.add(l0.id);
+                }
                 injectionStats.recentEvidence.units++;
             }
 
@@ -951,13 +1118,17 @@ async function buildVectorPrompt(store, recallResult, causalById, focusEntities,
             : 100;
         metrics.quality.eventPrecisionProxy = metrics.event?.similarityDistribution?.mean || 0;
 
-        const totalL0Selected = l0Selected.length;
-        const l0WithL1 = l0Selected.filter(l0 => {
-            const pair = l1ByFloor.get(l0.floor);
-            return pair?.aiTop1 || pair?.userTop1;
-        }).length;
-        metrics.quality.l1AttachRate = totalL0Selected > 0
-            ? Math.round(l0WithL1 / totalL0Selected * 100)
+        // l1AttachRate：有 L1 挂载的唯一楼层占所有 L0 覆盖楼层的比例
+        const l0Floors = new Set(l0Selected.map(l0 => l0.floor));
+        const l0FloorsWithL1 = new Set();
+        for (const floor of l0Floors) {
+            const pair = l1ByFloor.get(floor);
+            if (pair?.aiTop1 || pair?.userTop1) {
+                l0FloorsWithL1.add(floor);
+            }
+        }
+        metrics.quality.l1AttachRate = l0Floors.size > 0
+            ? Math.round(l0FloorsWithL1.size / l0Floors.size * 100)
             : 0;
 
         metrics.quality.potentialIssues = detectIssues(metrics);
@@ -1036,7 +1207,7 @@ export async function buildVectorPromptText(excludeLastAi = false, hooks = {}) {
 
         if (echo && canNotifyRecallFail()) {
             const msg = String(e?.message || "未知错误").replace(/\s+/g, " ").slice(0, 200);
-            await echo(`/echo severity=warning 向量召回失败：${msg}`);
+            await echo(`/echo severity=warning 嵌入 API 请求失败：${msg}（本次跳过记忆召回）`);
         }
 
         if (postToFrame) {
@@ -1055,12 +1226,21 @@ export async function buildVectorPromptText(excludeLastAi = false, hooks = {}) {
         (recallResult?.causalChain?.length || 0) > 0;
 
     if (!hasUseful) {
-        if (echo && canNotifyRecallFail()) {
-            await echo(
-                "/echo severity=warning 向量召回失败：没有可用召回结果（请先在面板中生成向量，或检查指纹不匹配）"
-            );
+        const noVectorsGenerated = !meta?.fingerprint || (meta?.lastChunkFloor ?? -1) < 0;
+        const fpMismatch = meta?.fingerprint && meta.fingerprint !== getEngineFingerprint(vectorCfg);
+
+        if (fpMismatch) {
+            if (echo && canNotifyRecallFail()) {
+                await echo("/echo severity=warning 向量引擎已变更，请重新生成向量");
+            }
+        } else if (noVectorsGenerated) {
+            if (echo && canNotifyRecallFail()) {
+                await echo("/echo severity=warning 没有可用向量，请在剧情总结面板中生成向量");
+            }
         }
-        if (postToFrame) {
+        // 向量存在但本次未命中 → 静默跳过，不打扰用户
+
+        if (postToFrame && (noVectorsGenerated || fpMismatch)) {
             postToFrame({
                 type: "RECALL_LOG",
                 text: "\n[Vector Recall Empty]\nNo recall candidates / vectors not ready.\n",
diff --git a/modules/story-summary/story-summary.js b/modules/story-summary/story-summary.js
index e1ba523..8ea7754 100644
--- a/modules/story-summary/story-summary.js
+++ b/modules/story-summary/story-summary.js
@@ -526,6 +526,52 @@ async function handleClearVectors() {
     xbLog.info(MODULE_ID, "向量数据已清除");
 }
 
+// ═══════════════════════════════════════════════════════════════════════════
+// L0 自动补提取（每收到新消息后检查并补提取缺失楼层）
+// ═══════════════════════════════════════════════════════════════════════════
+
+async function maybeAutoExtractL0() {
+    const vectorCfg = getVectorConfig();
+    if (!vectorCfg?.enabled) return;
+    if (anchorGenerating || vectorGenerating) return;
+
+    const { chatId, chat } = getContext();
+    if (!chatId || !chat?.length) return;
+
+    const stats = await getAnchorStats();
+    if (stats.pending <= 0) return;
+
+    anchorGenerating = true;
+
+    try {
+        await incrementalExtractAtoms(chatId, chat, null, { maxFloors: 20 });
+
+        // 为新提取的 L0 楼层构建 L1 chunks
+        await buildIncrementalChunks({ vectorConfig: vectorCfg });
+
+        invalidateLexicalIndex();
+
+        await sendAnchorStatsToFrame();
+        await sendVectorStatsToFrame();
+
+        xbLog.info(MODULE_ID, "自动 L0 补提取完成");
+    } catch (e) {
+        xbLog.error(MODULE_ID, "自动 L0 补提取失败", e);
+    } finally {
+        anchorGenerating = false;
+    }
+}
+
+// ═══════════════════════════════════════════════════════════════════════════
+// Embedding 连接预热
+// ═══════════════════════════════════════════════════════════════════════════
+
+function warmupEmbeddingConnection() {
+    const vectorCfg = getVectorConfig();
+    if (!vectorCfg?.enabled) return;
+    embed(['.'], vectorCfg, { timeout: 5000 }).catch(() => {});
+}
+
 // ═══════════════════════════════════════════════════════════════════════════
 // 实体词典注入 + 索引预热
 // ═══════════════════════════════════════════════════════════════════════════
@@ -1284,6 +1330,9 @@ async function handleChatChanged() {
     // 实体词典注入 + 索引预热
     refreshEntityLexiconAndWarmup();
 
+    // Embedding 连接预热（保持 TCP keep-alive，减少首次召回超时）
+    warmupEmbeddingConnection();
+
     setTimeout(() => checkVectorIntegrityAndWarn(), 2000);
 }
 
@@ -1316,7 +1365,10 @@ async function handleMessageReceived() {
     // 向量全量生成中时跳过 L1 sync（避免竞争写入）
     if (vectorGenerating) return;
 
-    await syncOnMessageReceived(chatId, lastFloor, message, vectorConfig);
+    await syncOnMessageReceived(chatId, lastFloor, message, vectorConfig, () => {
+        sendAnchorStatsToFrame();
+        sendVectorStatsToFrame();
+    });
     await maybeAutoBuildChunks();
 
     applyHideStateDebounced();
@@ -1324,6 +1376,9 @@ async function handleMessageReceived() {
 
     // 新消息后刷新实体词典（可能有新角色）
     refreshEntityLexiconAndWarmup();
+
+    // 自动补提取缺失的 L0（延迟执行，避免与当前楼提取竞争）
+    setTimeout(() => maybeAutoExtractL0(), 2000);
 }
 
 function handleMessageSent() {
diff --git a/modules/story-summary/vector/pipeline/chunk-builder.js b/modules/story-summary/vector/pipeline/chunk-builder.js
index 7420efe..c0b9174 100644
--- a/modules/story-summary/vector/pipeline/chunk-builder.js
+++ b/modules/story-summary/vector/pipeline/chunk-builder.js
@@ -334,7 +334,7 @@ export async function syncOnMessageSwiped(chatId, lastFloor) {
 /**
  * 新消息后同步：删除 + 重建最后楼层
  */
-export async function syncOnMessageReceived(chatId, lastFloor, message, vectorConfig) {
+export async function syncOnMessageReceived(chatId, lastFloor, message, vectorConfig, onL0Complete) {
     if (!chatId || lastFloor < 0 || !message) return;
     if (!vectorConfig?.enabled) return;
 
@@ -368,11 +368,10 @@ export async function syncOnMessageReceived(chatId, lastFloor, message, vectorCo
         const userMessage = (userFloor >= 0 && chat[userFloor]?.is_user) ? chat[userFloor] : null;
 
         try {
-            await extractAndStoreAtomsForRound(lastFloor, message, userMessage);
+            await extractAndStoreAtomsForRound(lastFloor, message, userMessage, onL0Complete);
         } catch (e) {
             xbLog.warn(MODULE_ID, `Atom 提取失败: floor ${lastFloor}`, e);
         }
     }
 }
 
-
diff --git a/modules/story-summary/vector/pipeline/state-integration.js b/modules/story-summary/vector/pipeline/state-integration.js
index f5d1ae6..e305580 100644
--- a/modules/story-summary/vector/pipeline/state-integration.js
+++ b/modules/story-summary/vector/pipeline/state-integration.js
@@ -112,7 +112,8 @@ function buildL0InputText(userMessage, aiMessage) {
     return parts.join('\n\n---\n\n').trim();
 }
 
-export async function incrementalExtractAtoms(chatId, chat, onProgress) {
+export async function incrementalExtractAtoms(chatId, chat, onProgress, options = {}) {
+    const { maxFloors = Infinity } = options;
     if (!chatId || !chat?.length) return { built: 0 };
 
     const vectorCfg = getVectorConfig();
@@ -144,6 +145,11 @@ export async function incrementalExtractAtoms(chatId, chat, onProgress) {
         pendingPairs.push({ userMsg, aiMsg: msg, aiFloor: i });
     }
 
+    // 限制单次提取楼层数（自动触发时使用）
+    if (pendingPairs.length > maxFloors) {
+        pendingPairs.length = maxFloors;
+    }
+
     if (!pendingPairs.length) {
         onProgress?.('已全部提取', 0, 0);
         return { built: 0 };
@@ -323,14 +329,14 @@ export async function clearAllAtomsAndVectors(chatId) {
 let extractionQueue = [];
 let isProcessing = false;
 
-export async function extractAndStoreAtomsForRound(aiFloor, aiMessage, userMessage) {
+export async function extractAndStoreAtomsForRound(aiFloor, aiMessage, userMessage, onComplete) {
     const { chatId } = getContext();
     if (!chatId) return;
 
     const vectorCfg = getVectorConfig();
     if (!vectorCfg?.enabled) return;
 
-    extractionQueue.push({ aiFloor, aiMessage, userMessage, chatId });
+    extractionQueue.push({ aiFloor, aiMessage, userMessage, chatId, onComplete });
     processQueue();
 }
 
@@ -339,13 +345,14 @@ async function processQueue() {
     isProcessing = true;
 
     while (extractionQueue.length > 0) {
-        const { aiFloor, aiMessage, userMessage, chatId } = extractionQueue.shift();
+        const { aiFloor, aiMessage, userMessage, chatId, onComplete } = extractionQueue.shift();
 
         try {
             const atoms = await extractAtomsForRound(userMessage, aiMessage, aiFloor, { timeout: 12000 });
 
             if (!atoms?.length) {
                 xbLog.info(MODULE_ID, `floor ${aiFloor}: 无有效 atoms`);
+                onComplete?.({ floor: aiFloor, atomCount: 0 });
                 continue;
             }
 
@@ -356,8 +363,10 @@ async function processQueue() {
             await vectorizeAtomsSimple(chatId, atoms);
 
             xbLog.info(MODULE_ID, `floor ${aiFloor}: ${atoms.length} atoms 已存储`);
+            onComplete?.({ floor: aiFloor, atomCount: atoms.length });
         } catch (e) {
             xbLog.error(MODULE_ID, `floor ${aiFloor} 处理失败`, e);
+            onComplete?.({ floor: aiFloor, atomCount: 0, error: e });
         }
     }
 
diff --git a/modules/story-summary/vector/retrieval/recall.js b/modules/story-summary/vector/retrieval/recall.js
index 0d85b12..853cc2d 100644
--- a/modules/story-summary/vector/retrieval/recall.js
+++ b/modules/story-summary/vector/retrieval/recall.js
@@ -878,16 +878,23 @@ export async function recallMemory(allEvents, vectorConfig, options = {}) {
     try {
         const [vec] = await embed([bundle.queryText_v0], vectorConfig, { timeout: 10000 });
         queryVector_v0 = vec;
-    } catch (e) {
-        xbLog.error(MODULE_ID, 'Round 1 向量化失败', e);
-        metrics.timing.total = Math.round(performance.now() - T0);
-        return {
-            events: [], l0Selected: [], l1ByFloor: new Map(), causalChain: [],
-            focusEntities: bundle.focusEntities,
-            elapsed: metrics.timing.total,
-            logText: 'Embedding failed (round 1).',
-            metrics,
-        };
+    } catch (e1) {
+        xbLog.warn(MODULE_ID, 'Round 1 向量化失败，500ms 后重试', e1);
+        await new Promise(r => setTimeout(r, 500));
+        try {
+            const [vec] = await embed([bundle.queryText_v0], vectorConfig, { timeout: 15000 });
+            queryVector_v0 = vec;
+        } catch (e2) {
+            xbLog.error(MODULE_ID, 'Round 1 向量化重试仍失败', e2);
+            metrics.timing.total = Math.round(performance.now() - T0);
+            return {
+                events: [], l0Selected: [], l1ByFloor: new Map(), causalChain: [],
+                focusEntities: bundle.focusEntities,
+                elapsed: metrics.timing.total,
+                logText: 'Embedding failed (round 1, after retry).',
+                metrics,
+            };
+        }
     }
 
     if (!queryVector_v0?.length) {