diff --git a/apps/web/messages/en.json b/apps/web/messages/en.json
index bba8d8481..ec066075e 100644
--- a/apps/web/messages/en.json
+++ b/apps/web/messages/en.json
@@ -13447,6 +13447,30 @@
       "state": "受控 apply / break-glass",
       "detail": "低中高風險走 selector、dry-run、rollback、verifier；事故級仍鎖。"
     },
+    "workspace": {
+      "eyebrow": "IwoooS 工作台",
+      "title": "分段查看，不再一頁到底",
+      "subtitle": "預設只顯示指揮總覽；runtime、證據鏈與完整 ledger 依任務切換。",
+      "ariaLabel": "IwoooS 工作台分段",
+      "views": {
+        "overview": {
+          "label": "指揮總覽",
+          "detail": "卡點、進度、runtime readback"
+        },
+        "runtime": {
+          "label": "受控執行",
+          "detail": "Wazuh、AI SOC、dry-run 與 postcheck"
+        },
+        "evidence": {
+          "label": "證據鏈",
+          "detail": "KM、owner packet、review 前置"
+        },
+        "ledger": {
+          "label": "完整 Ledger",
+          "detail": "所有治理軌道與歷史明細"
+        }
+      }
+    },
     "managerCockpit": {
       "eyebrow": "管理者控制台",
       "title": "現在真正要處理什麼",
diff --git a/apps/web/messages/zh-TW.json b/apps/web/messages/zh-TW.json
index 002ae4bca..4aa6842c9 100644
--- a/apps/web/messages/zh-TW.json
+++ b/apps/web/messages/zh-TW.json
@@ -13447,6 +13447,30 @@
       "state": "受控 apply / break-glass",
       "detail": "低中高風險走 selector、dry-run、rollback、verifier；事故級仍鎖。"
     },
+    "workspace": {
+      "eyebrow": "IwoooS 工作台",
+      "title": "分段查看，不再一頁到底",
+      "subtitle": "預設只顯示指揮總覽；runtime、證據鏈與完整 ledger 依任務切換。",
+      "ariaLabel": "IwoooS 工作台分段",
+      "views": {
+        "overview": {
+          "label": "指揮總覽",
+          "detail": "卡點、進度、runtime readback"
+        },
+        "runtime": {
+          "label": "受控執行",
+          "detail": "Wazuh、AI SOC、dry-run 與 postcheck"
+        },
+        "evidence": {
+          "label": "證據鏈",
+          "detail": "KM、owner packet、review 前置"
+        },
+        "ledger": {
+          "label": "完整 Ledger",
+          "detail": "所有治理軌道與歷史明細"
+        }
+      }
+    },
     "managerCockpit": {
       "eyebrow": "管理者控制台",
       "title": "現在真正要處理什麼",
diff --git a/apps/web/src/app/[locale]/iwooos/page.tsx b/apps/web/src/app/[locale]/iwooos/page.tsx
index 28dc06e1b..7beabc5e9 100644
--- a/apps/web/src/app/[locale]/iwooos/page.tsx
+++ b/apps/web/src/app/[locale]/iwooos/page.tsx
@@ -168,6 +168,7 @@ type VisualDashboardGate = {
 
 type VisualExperienceMode = 'attackPath' | 'assetHeat' | 'responseFlow'
 type IwoooSCommandMapMode = 'unlock' | 'scope' | 'hosts' | 'sourceControl' | 'awooop' | 'boundary'
+type IwoooSWorkspaceView = 'overview' | 'runtime' | 'evidence' | 'ledger'
 
 type VisualExperienceTab = {
   key: VisualExperienceMode
@@ -6462,6 +6463,105 @@ function ToneDot({ tone }: { tone: 'steady' | 'warn' | 'locked' }) {
   )
 }
 
+const iwooosWorkspaceViews: Array<{
+  key: IwoooSWorkspaceView
+  icon: typeof ShieldCheck
+  tone: 'steady' | 'warn' | 'locked'
+}> = [
+  { key: 'overview', icon: Radar, tone: 'steady' },
+  { key: 'runtime', icon: Workflow, tone: 'warn' },
+  { key: 'evidence', icon: FileCheck2, tone: 'warn' },
+  { key: 'ledger', icon: ClipboardList, tone: 'locked' },
+]
+
+function IwoooSWorkspaceSwitcher({
+  active,
+  onChange,
+}: {
+  active: IwoooSWorkspaceView
+  onChange: (value: IwoooSWorkspaceView) => void
+}) {
+  const t = useTranslations('iwooos.workspace')
+
+  return (
+    <section style={{ ...band, padding: 14, marginBottom: 14 }} data-testid="iwooos-workspace-switcher">
+      <div
+        style={{
+          display: 'grid',
+          gridTemplateColumns: 'minmax(0, 1.1fr) minmax(0, 2fr)',
+          gap: 14,
+          alignItems: 'center',
+        }}
+      >
+        <div style={{ minWidth: 0 }}>
+          <div style={{ display: 'flex', alignItems: 'center', gap: 8, color: '#315f45', fontSize: 12, fontWeight: 800 }}>
+            <ShieldCheck size={16} color="#2f7d48" />
+            {t('eyebrow')}
+          </div>
+          <h2 style={{ margin: '6px 0 0', fontSize: 18, color: '#141413' }}>{t('title')}</h2>
+          <p style={{ margin: '6px 0 0', color: '#5f5b52', fontSize: 12, lineHeight: 1.5 }}>
+            {t('subtitle')}
+          </p>
+        </div>
+        <div
+          role="tablist"
+          aria-label={t('ariaLabel')}
+          style={{
+            display: 'grid',
+            gridTemplateColumns: 'repeat(auto-fit, minmax(132px, 1fr))',
+            gap: 8,
+          }}
+        >
+          {iwooosWorkspaceViews.map(view => {
+            const Icon = view.icon
+            const selected = active === view.key
+            return (
+              <button
+                key={view.key}
+                type="button"
+                role="tab"
+                aria-selected={selected}
+                onClick={() => onChange(view.key)}
+                style={{
+                  appearance: 'none',
+                  border: selected ? `1px solid ${toneColors[view.tone]}` : '0.5px solid #ded9ce',
+                  background: selected ? '#f6fbf6' : '#fff',
+                  color: selected ? toneColors[view.tone] : '#5f5b52',
+                  minHeight: 58,
+                  padding: '10px 11px',
+                  display: 'grid',
+                  gap: 5,
+                  textAlign: 'left',
+                  cursor: 'pointer',
+                }}
+              >
+                <span style={{ display: 'flex', alignItems: 'center', gap: 7, fontSize: 12, fontWeight: 800 }}>
+                  <Icon size={15} color={selected ? toneColors[view.tone] : '#77736a'} />
+                  {t(`views.${view.key}.label` as never)}
+                </span>
+                <span style={{ fontSize: 11, lineHeight: 1.35, color: selected ? '#315f45' : '#77736a' }}>
+                  {t(`views.${view.key}.detail` as never)}
+                </span>
+              </button>
+            )
+          })}
+        </div>
+      </div>
+    </section>
+  )
+}
+
+function IwoooSWorkspacePanel({
+  active,
+  children,
+}: {
+  active: boolean
+  children: ReactNode
+}) {
+  if (!active) return null
+  return <div style={{ display: 'grid', gap: 14 }}>{children}</div>
+}
+
 function MetricCard({ item }: { item: PostureMetric }) {
   const t = useTranslations('iwooos.metrics')
   return (
@@ -24146,6 +24246,7 @@ function HostOwnerDecisionRecordHumanRecordOwnerReviewPreparationChecklistCard({
 export default function IwoooSPage({ params }: { params: { locale: string } }) {
   const t = useTranslations('iwooos')
   const ia = useTranslations('iwooos.informationArchitecture')
+  const [workspaceView, setWorkspaceView] = useState<IwoooSWorkspaceView>('overview')
 
   return (
     <AppLayout locale={params.locale} fullBleed>
@@ -24178,7 +24279,54 @@ export default function IwoooSPage({ params }: { params: { locale: string } }) {
           </div>
         </section>
 
+        <IwoooSWorkspaceSwitcher active={workspaceView} onChange={setWorkspaceView} />
         <IwoooSManagerCockpit />
+
+        <IwoooSWorkspacePanel active={workspaceView === 'overview'}>
+          <IwoooSCommandRail />
+          <IwoooSProgressIntegrityRibbon />
+          <IwoooSExecutiveSnapshotBoard />
+          <IwoooSRuntimeSecurityReadbackBoard />
+          <IwoooSSecurityControlCoverageBoard />
+        </IwoooSWorkspacePanel>
+
+        <IwoooSWorkspacePanel active={workspaceView === 'runtime'}>
+          <IwoooSCommandRail />
+          <IwoooSAgentBountySecurityOnboardingBoard />
+          <IwoooSRolloutRiskReadOnlyBoard />
+          <IwoooSWazuhIntrusionReadbackBoard />
+          <IwoooSRuntimeSecurityReadbackBoard />
+          <IwoooSWazuhLiveRouteReadbackBoard />
+          <IwoooSWazuhReleaseGateBoard />
+          <IwoooSWazuhManagedHostCoverageBoard />
+          <IwoooSWazuhManagerRegistryReviewerValidationBoard />
+          <IwoooSWazuhLiveMetadataEnvGateBoard />
+          <IwoooSSecurityOperatingSystemBoard />
+          <IwoooSSocSiemKaliWazuhIntegrationBoard />
+          <IwoooSP0SecurityIncidentConvergenceBoard />
+        </IwoooSWorkspacePanel>
+
+        <IwoooSWorkspacePanel active={workspaceView === 'evidence'}>
+          <IwoooSSectionGroup
+            id="iwooos-workspace-evidence-chain"
+            title={ia('firstLayerEvidence.title')}
+            summary={ia('firstLayerEvidence.summary')}
+            defaultOpen
+          >
+            <IwoooSFocusDeckBoard />
+            <IwoooSFirstScreenDepthMapBoard />
+            <IwoooSProgressEvidenceRailBoard />
+            <IwoooSEvidenceUnlockQueueBoard />
+            <IwoooSS49RequestDraftPackageBoard />
+            <IwoooSS49RequestDraftDetailBoard />
+            <IwoooSS49OwnerResponseIntakeBoard />
+          </IwoooSSectionGroup>
+          <IwoooSOwnerEvidenceIntakePreflightBoard />
+          <IwoooSWazuhOwnerEvidencePreflightBoard />
+          <IwoooSHighValueConfigOwnerPacketBoard />
+        </IwoooSWorkspacePanel>
+
+        <IwoooSWorkspacePanel active={workspaceView === 'ledger'}>
         <IwoooSCommandRail />
         <IwoooSProgressIntegrityRibbon />
         <IwoooSExecutiveSnapshotBoard />
@@ -25388,6 +25536,7 @@ export default function IwoooSPage({ params }: { params: { locale: string } }) {
             </div>
           </section>
         </IwoooSSectionGroup>
+        </IwoooSWorkspacePanel>
       </main>
     </AppLayout>
   )
diff --git a/docs/LOGBOOK.md b/docs/LOGBOOK.md
index bfa8da0f1..aa2bb3dc9 100644
--- a/docs/LOGBOOK.md
+++ b/docs/LOGBOOK.md
@@ -1,3 +1,19 @@
+## 2026-07-03 — 01:24 IwoooS 首屏分段工作台
+
+**完成內容**：
+- `/zh-TW/iwooos` 新增 `指揮總覽 / 受控執行 / 證據鏈 / 完整 Ledger` segmented workspace，預設只 render 指揮總覽，避免 25k 行治理軌道一次全部攤開。
+- `runtime` 視圖集中 Wazuh、AI SOC、dry-run、postcheck 與 runtime readback；`evidence` 視圖集中 KM / owner packet / review preflight；`ledger` 才顯示完整歷史治理明細。
+- 手機首屏已把 workspace switcher 移到 manager cockpit 前，使用者不用滑過長文字才知道可分段操作。
+
+**驗證**：
+- `python3.11 -m json.tool apps/web/messages/zh-TW.json`、`python3.11 -m json.tool apps/web/messages/en.json`：通過。
+- `pnpm --dir apps/web typecheck`：通過。
+- `pnpm --dir apps/web audit:ui-density`：通過；`/iwooos` 控制項由 29 增至 32，仍列第一優先，下一刀需拆 ledger 模組化降 source density。
+- Local Chrome smoke：desktop tab 切換通過；mobile HTTP 200、switcher y=428 進第一 viewport、四個 tab 可見、console error `0`。
+
+**仍維持**：
+- 未讀 secret / token / `.env` / raw sessions / SQLite / auth；未使用 GitHub / gh；未 production DB schema / data destructive write；未重啟主機 / VM / Docker / K3s / DB / firewall。
+
 ## 2026-07-03 — 01:05 Gitea all-project repo / dev-main / bundle backup closure
 
 **完成內容**：