diff --git a/apps/web/messages/en.json b/apps/web/messages/en.json
index d6a53f3b..a75919e6 100644
--- a/apps/web/messages/en.json
+++ b/apps/web/messages/en.json
@@ -1428,6 +1428,38 @@
       "playbookLinked": "Playbook 關聯",
       "countOfLoaded": "{count} / {total}"
     },
+    "lineage": {
+      "title": "引用鏈圖",
+      "scope": "來源、事故、Playbook 與審核覆蓋率",
+      "source": "來源",
+      "knowledge": "KM",
+      "incident": "Incident",
+      "playbook": "Playbook",
+      "review": "審核",
+      "sourceDetail": "AI {ai} / 人工 {human}",
+      "knowledgeDetail": "已載入 {count}",
+      "countDetail": "{count} / {total}"
+    },
+    "freshness": {
+      "title": "陳舊處理佇列",
+      "scope": "目前列表的補齊與審核缺口",
+      "stale": "7 天未更新",
+      "staleAction": "反查 Incident / Sentry / SigNoz 後產生更新草稿",
+      "missingIncident": "缺 Incident",
+      "missingIncidentAction": "補齊來源事故或標記為通用知識",
+      "missingPlaybook": "缺 Playbook",
+      "missingPlaybookAction": "匹配既有 Playbook 或建立草稿",
+      "reviewBacklog": "待 Owner 審核",
+      "reviewBacklogAction": "高影響條目先人工覆核再批准"
+    },
+    "entryLineage": {
+      "title": "單筆證據鏈",
+      "source": "來源",
+      "incident": "Incident",
+      "playbook": "Playbook",
+      "review": "審核",
+      "missing": "尚未關聯"
+    },
     "noResults": "找不到相關知識條目",
     "createEntry": "新增條目",
     "viewCount": "瀏覽",
diff --git a/apps/web/messages/zh-TW.json b/apps/web/messages/zh-TW.json
index d6a53f3b..a75919e6 100644
--- a/apps/web/messages/zh-TW.json
+++ b/apps/web/messages/zh-TW.json
@@ -1428,6 +1428,38 @@
       "playbookLinked": "Playbook 關聯",
       "countOfLoaded": "{count} / {total}"
     },
+    "lineage": {
+      "title": "引用鏈圖",
+      "scope": "來源、事故、Playbook 與審核覆蓋率",
+      "source": "來源",
+      "knowledge": "KM",
+      "incident": "Incident",
+      "playbook": "Playbook",
+      "review": "審核",
+      "sourceDetail": "AI {ai} / 人工 {human}",
+      "knowledgeDetail": "已載入 {count}",
+      "countDetail": "{count} / {total}"
+    },
+    "freshness": {
+      "title": "陳舊處理佇列",
+      "scope": "目前列表的補齊與審核缺口",
+      "stale": "7 天未更新",
+      "staleAction": "反查 Incident / Sentry / SigNoz 後產生更新草稿",
+      "missingIncident": "缺 Incident",
+      "missingIncidentAction": "補齊來源事故或標記為通用知識",
+      "missingPlaybook": "缺 Playbook",
+      "missingPlaybookAction": "匹配既有 Playbook 或建立草稿",
+      "reviewBacklog": "待 Owner 審核",
+      "reviewBacklogAction": "高影響條目先人工覆核再批准"
+    },
+    "entryLineage": {
+      "title": "單筆證據鏈",
+      "source": "來源",
+      "incident": "Incident",
+      "playbook": "Playbook",
+      "review": "審核",
+      "missing": "尚未關聯"
+    },
     "noResults": "找不到相關知識條目",
     "createEntry": "新增條目",
     "viewCount": "瀏覽",
diff --git a/apps/web/src/app/[locale]/knowledge-base/page.tsx b/apps/web/src/app/[locale]/knowledge-base/page.tsx
index 57c28c89..c0820c8a 100644
--- a/apps/web/src/app/[locale]/knowledge-base/page.tsx
+++ b/apps/web/src/app/[locale]/knowledge-base/page.tsx
@@ -18,6 +18,7 @@ import { cn } from '@/lib/utils'
 import {
   Search, BookOpen, FileText, Shield, Cpu,
   Server, Eye, Bot, ChevronRight, Plus, Sparkles, ClipboardList, Tag, TriangleAlert,
+  GitBranch, CheckCircle2, Clock3, Link2, FileSearch,
 } from 'lucide-react'
 import ReactMarkdown from 'react-markdown'
 import remarkGfm from 'remark-gfm'
@@ -413,8 +414,47 @@ export default function KnowledgeBasePage({
     ] as const
   }, [displayedEntries])
 
+  const lineageNodes = useMemo(() => {
+    const loaded = displayedEntries.length
+    const pct = (count: number) => loaded > 0 ? Math.round((count / loaded) * 100) : 0
+    const aiExtracted = displayedEntries.filter(entry => entry.source === 'ai_extracted').length
+    const humanCreated = displayedEntries.filter(entry => entry.source === 'human').length
+    const incidentLinked = displayedEntries.filter(entry => Boolean(entry.related_incident_id)).length
+    const playbookLinked = displayedEntries.filter(entry => Boolean(entry.related_playbook_id)).length
+    const approved = displayedEntries.filter(entry => entry.status === 'approved').length
+
+    return [
+      { key: 'source', count: aiExtracted, pct: pct(aiExtracted), icon: Bot, tone: 'border-purple-200 bg-purple-50 text-purple-600', detail: t('lineage.sourceDetail', { ai: formatCount(aiExtracted), human: formatCount(humanCreated) }) },
+      { key: 'knowledge', count: loaded, pct: loaded > 0 ? 100 : 0, icon: BookOpen, tone: 'border-claw-blue/20 bg-claw-blue/8 text-claw-blue', detail: t('lineage.knowledgeDetail', { count: formatCount(loaded) }) },
+      { key: 'incident', count: incidentLinked, pct: pct(incidentLinked), icon: TriangleAlert, tone: 'border-status-warning/20 bg-status-warning/10 text-status-warning', detail: t('lineage.countDetail', { count: formatCount(incidentLinked), total: formatCount(loaded) }) },
+      { key: 'playbook', count: playbookLinked, pct: pct(playbookLinked), icon: ClipboardList, tone: 'border-nothing-gray-200 bg-white text-secondary', detail: t('lineage.countDetail', { count: formatCount(playbookLinked), total: formatCount(loaded) }) },
+      { key: 'review', count: approved, pct: pct(approved), icon: CheckCircle2, tone: 'border-status-healthy/20 bg-status-healthy/10 text-status-healthy', detail: t('lineage.countDetail', { count: formatCount(approved), total: formatCount(loaded) }) },
+    ] as const
+  }, [displayedEntries, formatCount, t])
+
+  const freshnessQueueRows = useMemo(() => {
+    const loaded = displayedEntries.length
+    const now = Date.now()
+    const staleWindowMs = 7 * 24 * 60 * 60 * 1000
+    const pct = (count: number) => loaded > 0 ? Math.round((count / loaded) * 100) : 0
+    const stale = displayedEntries.filter(entry => {
+      const updatedAt = Date.parse(entry.updated_at)
+      return !Number.isFinite(updatedAt) || now - updatedAt > staleWindowMs
+    }).length
+    const missingIncident = displayedEntries.filter(entry => !entry.related_incident_id).length
+    const missingPlaybook = displayedEntries.filter(entry => !entry.related_playbook_id).length
+    const reviewBacklog = displayedEntries.filter(entry => entry.status === 'draft' || entry.status === 'review').length
+
+    return [
+      { key: 'stale', count: stale, pct: pct(stale), icon: Clock3, tone: 'bg-status-critical' },
+      { key: 'missingIncident', count: missingIncident, pct: pct(missingIncident), icon: Link2, tone: 'bg-status-warning' },
+      { key: 'missingPlaybook', count: missingPlaybook, pct: pct(missingPlaybook), icon: FileSearch, tone: 'bg-claw-blue' },
+      { key: 'reviewBacklog', count: reviewBacklog, pct: pct(reviewBacklog), icon: Shield, tone: 'bg-purple-500' },
+    ] as const
+  }, [displayedEntries])
+
   const content = (
-      <div className="flex h-[calc(100vh-64px)] flex-col lg:flex-row">
+      <div className="flex min-h-[calc(100vh-64px)] flex-col lg:h-[calc(100vh-64px)] lg:flex-row">
 
         {/* 左側分類導航 */}
         <aside className="w-full flex-shrink-0 border-b border-nothing-gray-200/50 bg-white/50 p-3 lg:w-52 lg:border-b-0 lg:border-r">
@@ -590,6 +630,71 @@ export default function KnowledgeBasePage({
                 ))}
               </div>
             </div>
+
+            <div className="mt-3 grid grid-cols-1 gap-3 xl:grid-cols-[minmax(0,1.25fr)_minmax(260px,0.75fr)]">
+              <div className="rounded-md border border-nothing-gray-200 bg-white/70 px-3 py-2">
+                <div className="mb-3 flex items-center justify-between gap-2">
+                  <div className="min-w-0">
+                    <p className="text-[10px] font-label uppercase tracking-wider text-muted">{t('lineage.title')}</p>
+                    <p className="mt-0.5 truncate text-[10px] font-body text-muted">{t('lineage.scope')}</p>
+                  </div>
+                  <GitBranch className="h-4 w-4 shrink-0 text-claw-blue" aria-hidden="true" />
+                </div>
+                <div className="grid grid-cols-1 gap-2 sm:grid-cols-5">
+                  {lineageNodes.map((node, index) => {
+                    const Icon = node.icon
+                    return (
+                      <div key={node.key} className="relative min-w-0">
+                        {index > 0 && (
+                          <div className="pointer-events-none absolute -left-2 top-5 hidden h-px w-4 bg-nothing-gray-200 sm:block" />
+                        )}
+                        <div className={cn('h-full rounded-md border px-2.5 py-2', node.tone)}>
+                          <div className="flex items-center justify-between gap-2">
+                            <Icon className="h-4 w-4 shrink-0" aria-hidden="true" />
+                            <span className="text-[10px] font-label tabular-nums">{node.pct}%</span>
+                          </div>
+                          <p className="mt-2 truncate text-[10px] font-label uppercase tracking-wider">{t(`lineage.${node.key}`)}</p>
+                          <p className="mt-1 text-lg font-heading font-semibold tabular-nums">{formatCount(node.count)}</p>
+                          <p className="mt-0.5 truncate text-[10px] font-body opacity-80">{node.detail}</p>
+                        </div>
+                      </div>
+                    )
+                  })}
+                </div>
+              </div>
+
+              <div className="rounded-md border border-nothing-gray-200 bg-white/70 px-3 py-2">
+                <div className="mb-2 flex items-center justify-between gap-2">
+                  <div className="min-w-0">
+                    <p className="text-[10px] font-label uppercase tracking-wider text-muted">{t('freshness.title')}</p>
+                    <p className="mt-0.5 truncate text-[10px] font-body text-muted">{t('freshness.scope')}</p>
+                  </div>
+                  <Clock3 className="h-4 w-4 shrink-0 text-status-warning" aria-hidden="true" />
+                </div>
+                <div className="space-y-2">
+                  {freshnessQueueRows.map(row => {
+                    const Icon = row.icon
+                    return (
+                      <div key={row.key} className="min-w-0">
+                        <div className="mb-1 flex items-center justify-between gap-2">
+                          <span className="flex min-w-0 items-center gap-1.5 text-[10px] font-body text-secondary">
+                            <Icon className="h-3 w-3 shrink-0 text-muted" aria-hidden="true" />
+                            <span className="truncate">{t(`freshness.${row.key}`)}</span>
+                          </span>
+                          <span className="shrink-0 text-[10px] font-label tabular-nums text-muted">
+                            {t('quality.countOfLoaded', { count: formatCount(row.count), total: formatCount(visibleSummary.loaded) })}
+                          </span>
+                        </div>
+                        <div className="h-1.5 overflow-hidden rounded-full bg-nothing-gray-100">
+                          <div className={cn('h-full rounded-full', row.tone)} style={{ width: `${row.pct}%` }} />
+                        </div>
+                        <p className="mt-0.5 truncate text-[10px] font-body text-muted">{t(`freshness.${row.key}Action`)}</p>
+                      </div>
+                    )
+                  })}
+                </div>
+              </div>
+            </div>
           </section>
 
           {/* 結果列表 */}
@@ -791,6 +896,55 @@ export default function KnowledgeBasePage({
                 </div>
               )}
 
+              <div className="mb-4 rounded-md border border-nothing-gray-200 bg-white/70 p-3">
+                <div className="mb-2 flex items-center gap-1.5 text-[10px] font-label uppercase tracking-wider text-muted">
+                  <GitBranch className="h-3 w-3" aria-hidden="true" />
+                  {t('entryLineage.title')}
+                </div>
+                <div className="space-y-1.5">
+                  {[
+                    {
+                      key: 'source',
+                      icon: selectedEntry.source === 'ai_extracted' ? Bot : FileText,
+                      ok: true,
+                      value: t(`source.${selectedEntry.source}`),
+                    },
+                    {
+                      key: 'incident',
+                      icon: TriangleAlert,
+                      ok: Boolean(selectedEntry.related_incident_id),
+                      value: selectedEntry.related_incident_id ?? t('entryLineage.missing'),
+                    },
+                    {
+                      key: 'playbook',
+                      icon: ClipboardList,
+                      ok: Boolean(selectedEntry.related_playbook_id),
+                      value: selectedEntry.related_playbook_id ?? t('entryLineage.missing'),
+                    },
+                    {
+                      key: 'review',
+                      icon: selectedEntry.status === 'approved' ? CheckCircle2 : Clock3,
+                      ok: selectedEntry.status === 'approved',
+                      value: t(`status.${selectedEntry.status}`),
+                    },
+                  ].map(item => {
+                    const Icon = item.icon
+                    return (
+                      <div key={item.key} className="grid grid-cols-[18px_86px_minmax(0,1fr)] items-center gap-2">
+                        <span className={cn(
+                          'flex h-4 w-4 items-center justify-center rounded-full border',
+                          item.ok ? 'border-status-healthy/30 bg-status-healthy/10 text-status-healthy' : 'border-status-warning/30 bg-status-warning/10 text-status-warning',
+                        )}>
+                          <Icon className="h-2.5 w-2.5" aria-hidden="true" />
+                        </span>
+                        <span className="truncate text-[10px] font-label uppercase tracking-wider text-muted">{t(`entryLineage.${item.key}`)}</span>
+                        <span className="truncate text-[10px] font-body text-secondary" title={item.value}>{item.value}</span>
+                      </div>
+                    )
+                  })}
+                </div>
+              </div>
+
               {/* Raw technical tags */}
               {selectedEntry.tags.length > 0 && (
                 <details className="mb-4 rounded-md border border-nothing-gray-200 bg-white/50 p-3">