diff --git a/app/api/dashboard.py b/app/api/dashboard.py
index 777f67e..d591437 100644
--- a/app/api/dashboard.py
+++ b/app/api/dashboard.py
@@ -49,6 +49,22 @@ class QueueLag(BaseModel):
     oldest_pending_age_sec: int | None  # 가장 오래된 pending 의 created_at 기준 경과 (초)
 
 
+class TierHealthStack(BaseModel):
+    """PR-B B-3 — tier 관측성 3종 카드 소스 (24h 윈도우).
+
+    대시보드 카드:
+      - "에스컬레이션 비율": escalated_total / triage_total (>20% 적색, <1% 회색)
+      - "triage JSON 건강도": triage_json_invalid / triage_total (>5% 적색)
+      - "Backlog Suppression": suppressed_total / triage_total (>10% 주황)
+    """
+    triage_total: int = 0
+    escalated_total: int = 0
+    escalation_by_reason: dict[str, int] = {}     # long_context / low_confidence / deep_requested / self_declare
+    escalation_by_domain: dict[str, int] = {}     # safety_reference / news_item / ...
+    triage_json_invalid: int = 0                  # error_code='triage_json_invalid'
+    suppressed_total: int = 0                     # suppressed_reason IS NOT NULL
+
+
 class DashboardResponse(BaseModel):
     today_added: int
     today_by_domain: list[DomainCount]
@@ -66,6 +82,8 @@ class DashboardResponse(BaseModel):
     category_counts: dict[str, int] = {}
     library_pending_suggestions: int = 0
     queue_lag: list[QueueLag] = []
+    # PR-B B-3 — tier 관측성
+    tier_health: TierHealthStack = TierHealthStack()
 
 
 @router.get("/", response_model=DashboardResponse)
@@ -198,6 +216,47 @@ async def get_dashboard(
         for row in lag_result.all()
     ]
 
+    # ─── PR-B B-3 — tier 관측성 (24h) ───
+    tier_rows = (await session.execute(text("""
+        SELECT
+          COUNT(*) FILTER (WHERE mode = 'summary_triage')                                   AS triage_total,
+          COUNT(*) FILTER (WHERE mode = 'summary_triage' AND escalated_to_26b = true)       AS escalated_total,
+          COUNT(*) FILTER (WHERE mode = 'summary_triage' AND error_code = 'triage_json_invalid') AS json_invalid,
+          COUNT(*) FILTER (WHERE mode = 'summary_triage' AND suppressed_reason IS NOT NULL) AS suppressed_total
+        FROM analyze_events
+        WHERE created_at > NOW() - INTERVAL '24 hours'
+    """))).one()
+
+    reason_rows = await session.execute(text("""
+        SELECT unnest(escalation_reasons) AS reason, COUNT(*) AS n
+        FROM analyze_events
+        WHERE created_at > NOW() - INTERVAL '24 hours'
+          AND mode = 'summary_triage'
+          AND escalated_to_26b = true
+        GROUP BY 1 ORDER BY 2 DESC
+    """))
+    escalation_by_reason = {r[0]: r[1] for r in reason_rows if r[0]}
+
+    domain_rows = await session.execute(text("""
+        SELECT subject_domain, COUNT(*) AS n
+        FROM analyze_events
+        WHERE created_at > NOW() - INTERVAL '24 hours'
+          AND mode = 'summary_triage'
+          AND escalated_to_26b = true
+          AND subject_domain IS NOT NULL
+        GROUP BY 1 ORDER BY 2 DESC
+    """))
+    escalation_by_domain = {r[0]: r[1] for r in domain_rows}
+
+    tier_health = TierHealthStack(
+        triage_total=int(tier_rows.triage_total or 0),
+        escalated_total=int(tier_rows.escalated_total or 0),
+        triage_json_invalid=int(tier_rows.json_invalid or 0),
+        suppressed_total=int(tier_rows.suppressed_total or 0),
+        escalation_by_reason=escalation_by_reason,
+        escalation_by_domain=escalation_by_domain,
+    )
+
     return DashboardResponse(
         today_added=today_added,
         today_by_domain=[
@@ -227,4 +286,5 @@ async def get_dashboard(
         category_counts=category_counts,
         library_pending_suggestions=library_pending_suggestions,
         queue_lag=queue_lag,
+        tier_health=tier_health,
     )
diff --git a/frontend/src/lib/components/AnalysisPanel.svelte b/frontend/src/lib/components/AnalysisPanel.svelte
index 3fed308..557c644 100644
--- a/frontend/src/lib/components/AnalysisPanel.svelte
+++ b/frontend/src/lib/components/AnalysisPanel.svelte
@@ -1,36 +1,69 @@
 <!--
-  AnalysisPanel.svelte — 문서 상세 페이지 "빠른 분석" 패널 (Phase D.6).
+  AnalysisPanel.svelte — 문서 상세 페이지 AI 분석 패널.
 
-  기본 접힌 상태 + "빠른 분석" 버튼.
-  클릭 시 POST /api/documents/{docId}/analyze 호출 후 층별 결과 표시.
-  docId 변경 시 state 완전 리셋 ($effect).
+  PR-B B-3 (2026-04-24): 두 섹션 구성.
+    (A) tier triage 자동 표시 — doc.ai_tldr / ai_bullets / ai_detail_summary /
+        ai_inconsistencies 가 있으면 버튼 없이 자동 렌더. classify_worker 파이프
+        라인 산출물이라 별도 호출 없이 문서 진입 즉시 보임.
+    (B) 고급 분석 (빠른 분석) — 기존 POST /api/documents/{id}/analyze 경로.
+        layer 4개를 map-reduce 청킹으로 생성. 버튼 클릭 필요.
 
-  ※ 현재는 문서 앞부분(최대 12,000자)만 분석하는 "빠른 분석"이다.
-    전체 문서 coverage가 필요한 "전체 분석"은 다음 iteration에서
-    map-reduce 청킹 기반으로 별도 버튼으로 추가 예정.
-
-  상세 페이지의 editors stack에서 <Card>로 래핑되어 사용됨 (D.7).
+  docId 변경 시 (B) 섹션 state 리셋.
 -->
 <script lang="ts">
   import { api } from '$lib/api';
   import Badge from '$lib/components/ui/Badge.svelte';
   import Button from '$lib/components/ui/Button.svelte';
   import Skeleton from '$lib/components/ui/Skeleton.svelte';
-  import { Sparkles, RotateCcw } from 'lucide-svelte';
+  import { Sparkles, RotateCcw, CalendarClock, GitBranch, Quote, HelpCircle } from 'lucide-svelte';
   import type { AnalyzeResponse } from '$lib/types/analyze';
 
+  interface Inconsistency {
+    kind: 'version_drift' | 'procedure_conflict' | 'source_conflict' | 'missing_basis';
+    desc: string;
+  }
+
+  interface DocTierFields {
+    ai_tldr?: string | null;
+    ai_bullets?: string[] | null;
+    ai_detail_summary?: string | null;
+    ai_inconsistencies?: Inconsistency[] | null;
+    ai_analysis_tier?: 'triage' | 'deep' | null;
+  }
+
   interface Props {
     docId: number;
+    doc?: DocTierFields | null;
   }
 
-  let { docId }: Props = $props();
+  let { docId, doc }: Props = $props();
 
+  // ─── (A) tier triage 자동 표시 ───
+  let tldr = $derived(doc?.ai_tldr ?? null);
+  let bullets = $derived(doc?.ai_bullets ?? null);
+  let detail = $derived(doc?.ai_detail_summary ?? null);
+  let inconsistencies = $derived(doc?.ai_inconsistencies ?? null);
+  let tier = $derived(doc?.ai_analysis_tier ?? null);
+  let hasTier = $derived(!!tldr || !!detail || (bullets && bullets.length > 0));
+
+  const INC_ICON: Record<string, any> = {
+    version_drift: CalendarClock,
+    procedure_conflict: GitBranch,
+    source_conflict: Quote,
+    missing_basis: HelpCircle,
+  };
+  const INC_LABEL: Record<string, string> = {
+    version_drift: '개정/후속 차이',
+    procedure_conflict: '절차 충돌',
+    source_conflict: '출처 간 차이',
+    missing_basis: '근거 부족',
+  };
+
+  // ─── (B) 고급 분석 (기존 /analyze) ───
   let data = $state<AnalyzeResponse | null>(null);
   let loading = $state(false);
   let error = $state<string | null>(null);
 
-  // docId 변경 시 state 완전 리셋
-  // (프론트 캐시: 같은 docId 재방문 시 재호출 방지. 서버 캐시와 독립)
   $effect(() => {
     const _id = docId;
     data = null;
@@ -55,10 +88,75 @@
 </script>
 
 <div>
+  <!-- ─── (A) tier triage 자동 표시 (B-3) ─── -->
+  {#if hasTier}
+    <div class="mb-3 pb-3 border-b border-default/60">
+      <div class="flex items-center justify-between gap-2 mb-2">
+        <h4 class="text-xs font-semibold text-dim uppercase flex items-center gap-1">
+          <Sparkles size={12} class="text-accent" />
+          AI 요약
+        </h4>
+        {#if tier === 'deep'}
+          <Badge tone="accent" size="sm">깊은 분석 (26B)</Badge>
+        {:else if tier === 'triage'}
+          <Badge tone="neutral" size="sm">짧은 분석 (4B)</Badge>
+        {/if}
+      </div>
+
+      {#if tldr}
+        <p class="text-xs font-medium text-text leading-relaxed mb-2">
+          {tldr}
+        </p>
+      {/if}
+
+      {#if bullets && bullets.length > 0}
+        <ul class="list-disc pl-4 space-y-0.5 text-xs text-text leading-relaxed mb-2">
+          {#each bullets as b}
+            <li>{b}</li>
+          {/each}
+        </ul>
+      {/if}
+
+      {#if detail}
+        <div class="mt-2">
+          <p class="text-[10px] font-medium text-accent uppercase tracking-wider mb-1">
+            상세
+          </p>
+          <p class="text-xs text-text leading-relaxed whitespace-pre-wrap">
+            {detail}
+          </p>
+        </div>
+      {:else if tier === 'triage'}
+        <p class="mt-1.5 text-[10px] text-faint">
+          상세 요약 대기 중 (긴 문서/핵심 결정 문서일 때만 26B 생성).
+        </p>
+      {/if}
+
+      {#if inconsistencies && inconsistencies.length > 0}
+        <div class="mt-3 space-y-1.5">
+          <p class="text-[10px] font-medium text-warning uppercase tracking-wider">
+            일관성 이슈
+          </p>
+          {#each inconsistencies as it}
+            {@const Icon = INC_ICON[it.kind] ?? HelpCircle}
+            <div class="flex items-start gap-1.5 text-xs text-warning">
+              <Icon size={12} class="mt-0.5 shrink-0" />
+              <div>
+                <span class="font-medium">{INC_LABEL[it.kind] ?? it.kind}</span>
+                <span class="text-text">: {it.desc}</span>
+              </div>
+            </div>
+          {/each}
+        </div>
+      {/if}
+    </div>
+  {/if}
+
+  <!-- ─── (B) 기존 고급 분석 ─── -->
   <div class="flex items-center justify-between gap-2 mb-1.5">
     <h4 class="text-xs font-semibold text-dim uppercase flex items-center gap-1">
       <Sparkles size={12} class="text-accent" />
-      빠른 분석
+      고급 분석
     </h4>
     {#if data?.cached}
       <Badge tone="neutral" size="sm">캐시</Badge>
@@ -71,9 +169,8 @@
       빠른 분석
     </Button>
     <p class="mt-1.5 text-[10px] text-dim leading-relaxed">
-      문서 앞부분(최대 12,000자)을 Gemma 4로 구조화합니다. 약 10~40초 소요.
-      <br/>
-      <span class="text-faint">※ 전체 분석은 추후 제공 예정.</span>
+      문서 앞부분(최대 12,000자)을 4층 구조 (evidence / explanation / examples /
+      summary) 로 구조화합니다. 약 10~40초 소요.
     </p>
   {:else if loading}
     <div class="space-y-2">
diff --git a/frontend/src/lib/components/editors/AIClassificationEditor.svelte b/frontend/src/lib/components/editors/AIClassificationEditor.svelte
index 6a7d7e3..eb86640 100644
--- a/frontend/src/lib/components/editors/AIClassificationEditor.svelte
+++ b/frontend/src/lib/components/editors/AIClassificationEditor.svelte
@@ -38,6 +38,12 @@
           {doc.importance}
         </Badge>
       {/if}
+      <!-- B-3: tier 배지 (triage=4B 흰/deep=26B 파랑) -->
+      {#if doc.ai_analysis_tier === 'deep'}
+        <Badge tone="accent" size="sm" title="26B 가 깊은 요약까지 작성">깊이</Badge>
+      {:else if doc.ai_analysis_tier === 'triage'}
+        <Badge tone="neutral" size="sm" title="4B 짧은 분석만 완료">짧음</Badge>
+      {/if}
     </div>
   </div>
 {/if}
diff --git a/frontend/src/lib/stores/system.ts b/frontend/src/lib/stores/system.ts
index d442de4..74bfa25 100644
--- a/frontend/src/lib/stores/system.ts
+++ b/frontend/src/lib/stores/system.ts
@@ -34,6 +34,15 @@ export interface QueueLag {
   oldest_pending_age_sec: number | null;
 }
 
+export interface TierHealthStack {
+  triage_total: number;
+  escalated_total: number;
+  escalation_by_reason: Record<string, number>;
+  escalation_by_domain: Record<string, number>;
+  triage_json_invalid: number;
+  suppressed_total: number;
+}
+
 export interface DashboardSummary {
   today_added: number;
   today_by_domain: DomainCount[];
@@ -50,6 +59,8 @@ export interface DashboardSummary {
   category_counts: Record<string, number>;
   library_pending_suggestions: number;
   queue_lag: QueueLag[];
+  // B-3 — tier 관측성 3종 카드
+  tier_health?: TierHealthStack;
 }
 
 const POLL_INTERVAL_MS = 60_000;
diff --git a/frontend/src/routes/+page.svelte b/frontend/src/routes/+page.svelte
index 6b7a176..c4d0a56 100644
--- a/frontend/src/routes/+page.svelte
+++ b/frontend/src/routes/+page.svelte
@@ -319,6 +319,75 @@
         </div>
       {/if}
 
+      <!-- ═══ 3.6. tier 관측성 3종 카드 (B-3) ═══ -->
+      {#if summary.tier_health && summary.tier_health.triage_total > 0}
+        {@const th = summary.tier_health}
+        {@const esc_rate = th.triage_total > 0 ? th.escalated_total / th.triage_total : 0}
+        {@const json_rate = th.triage_total > 0 ? th.triage_json_invalid / th.triage_total : 0}
+        {@const sup_rate = th.triage_total > 0 ? th.suppressed_total / th.triage_total : 0}
+        {@const esc_tone = esc_rate > 0.20 ? 'text-error' : (esc_rate < 0.01 ? 'text-dim' : 'text-text')}
+        {@const json_tone = json_rate > 0.05 ? 'text-error' : 'text-text'}
+        {@const sup_tone = sup_rate > 0.10 ? 'text-warning' : 'text-text'}
+        <div class="grid grid-cols-1 md:grid-cols-3 gap-4 mb-5">
+          <!-- 에스컬레이션 비율 -->
+          <Card class="h-full">
+            <div class="flex items-start justify-between">
+              <p class="text-sm text-dim">에스컬레이션 비율 (24h)</p>
+              <Sparkles size={18} class="text-faint" />
+            </div>
+            <p class="text-2xl font-bold mt-2 {esc_tone}">
+              {(esc_rate * 100).toFixed(1)}%
+            </p>
+            <p class="text-xs text-dim mt-1">
+              {th.escalated_total} / {th.triage_total}
+              {#if esc_rate > 0.20}<span class="text-error ml-1">(튜닝 필요)</span>{/if}
+              {#if esc_rate < 0.01}<span class="text-dim ml-1">(false negative?)</span>{/if}
+            </p>
+            {#if Object.keys(th.escalation_by_reason).length > 0}
+              <div class="mt-2 flex flex-wrap gap-1">
+                {#each Object.entries(th.escalation_by_reason).slice(0, 4) as [reason, n]}
+                  <span class="text-[10px] px-1.5 py-0.5 rounded bg-surface-muted text-dim">
+                    {reason} {n}
+                  </span>
+                {/each}
+              </div>
+            {/if}
+          </Card>
+
+          <!-- triage JSON 건강도 -->
+          <Card class="h-full">
+            <div class="flex items-start justify-between">
+              <p class="text-sm text-dim">triage JSON 건강도 (24h)</p>
+              <Sparkles size={18} class="text-faint" />
+            </div>
+            <p class="text-2xl font-bold mt-2 {json_tone}">
+              {(json_rate * 100).toFixed(1)}%
+            </p>
+            <p class="text-xs text-dim mt-1">
+              깨짐 {th.triage_json_invalid} 건
+              {#if json_rate > 0.05}<span class="text-error ml-1">(프롬프트 이슈 의심)</span>{/if}
+            </p>
+            <p class="text-[10px] text-faint mt-1">5% 초과 시 4B 프롬프트·모델 재검토</p>
+          </Card>
+
+          <!-- Backlog Suppression -->
+          <Card class="h-full">
+            <div class="flex items-start justify-between">
+              <p class="text-sm text-dim">Backlog Suppression (24h)</p>
+              <Sparkles size={18} class="text-faint" />
+            </div>
+            <p class="text-2xl font-bold mt-2 {sup_tone}">
+              {(sup_rate * 100).toFixed(1)}%
+            </p>
+            <p class="text-xs text-dim mt-1">
+              억제 {th.suppressed_total} 건
+              {#if sup_rate > 0.10}<span class="text-warning ml-1">(임계치 재조정 신호)</span>{/if}
+            </p>
+            <p class="text-[10px] text-faint mt-1">10% 초과 시 ratio/pending threshold 조정</p>
+          </Card>
+        </div>
+      {/if}
+
       <!-- ═══ 4. 최근 활동 ═══ -->
       <Card class="mb-4">
         <div class="flex items-center justify-between mb-3">
diff --git a/frontend/src/routes/documents/[id]/+page.svelte b/frontend/src/routes/documents/[id]/+page.svelte
index dabd921..becdf49 100644
--- a/frontend/src/routes/documents/[id]/+page.svelte
+++ b/frontend/src/routes/documents/[id]/+page.svelte
@@ -246,7 +246,7 @@
           <AIClassificationEditor {doc} />
         </Card>
         <Card>
-          <AnalysisPanel docId={doc.id} />
+          <AnalysisPanel docId={doc.id} doc={doc} />
         </Card>
         <Card>
           <FileInfoView {doc} />