diff --git a/packages/core/src/accounts.ts b/packages/core/src/accounts.ts
index 9786eb46..7a381806 100644
--- a/packages/core/src/accounts.ts
+++ b/packages/core/src/accounts.ts
@@ -118,6 +118,12 @@ export type OAuthQuotaSnapshot = Partial<
   Record<QuotaWindowName, AccountQuotaWindow>
 > & {
   scoped?: AccountScopedQuotaWindow[]
+  // Top-level freshness stamp for the whole snapshot. mergeAccountRuntimeState
+  // uses this when the snapshot has no per-window checkedAt (e.g. a windowless
+  // empty-scoped snapshot) — without it, a windowless refresh gets read as
+  // checkedAt=0 and treated as stale, so an old per-window quota resurrects
+  // instead of being overwritten.
+  checkedAt?: number
 }
 
 export type RoutingMode = 'main-first' | 'fallback-first'
@@ -451,6 +457,15 @@ function normalizeQuota(value: unknown): OAuthAccount['quota'] {
     if (normalized) quota[key] = normalized
   }
 
+  // Persist a top-level snapshot checkedAt through normalize so the
+  // mergeAccountRuntimeState freshness comparison stays meaningful when the
+  // snapshot has no per-window checkedAt (e.g. {scoped:[]}). Pre-feature
+  // inputs without this key are unaffected — only on-disk snapshots that
+  // already carry it reach this branch.
+  if (typeof value.checkedAt === 'number' && Number.isFinite(value.checkedAt)) {
+    quota.checkedAt = value.checkedAt
+  }
+
   if (Array.isArray(value.scoped)) {
     const scoped = value.scoped
       .map((entry): AccountScopedQuotaWindow | undefined => {
@@ -477,7 +492,11 @@ function normalizeQuota(value: unknown): OAuthAccount['quota'] {
         }
       })
       .filter((entry): entry is AccountScopedQuotaWindow => entry != null)
-    if (scoped.length) quota.scoped = scoped
+    // Preserve empty `[]` so a downstream reader can distinguish "scoped
+    // owned by anthropic-auth, none visible" from "no scoped data on this
+    // snapshot". Pre-feature inputs without a `scoped` key are not affected
+    // — only inputs that already carried an array reach this line.
+    quota.scoped = scoped
   }
 
   return Object.keys(quota).length ? quota : undefined
@@ -697,6 +716,7 @@ function quotaSnapshotCheckedAt(quota: OAuthQuotaSnapshot | undefined) {
     quota?.five_hour?.checkedAt ?? 0,
     quota?.seven_day?.checkedAt ?? 0,
     ...(quota?.scoped?.map((window) => window.checkedAt) ?? []),
+    quota?.checkedAt ?? 0,
   )
 }
 
@@ -1943,8 +1963,8 @@ function slugForQuotaIdentity(value: string): string {
 function mapScopedWeeklyLimits(
   limits: OAuthUsageLimit[] | undefined,
   checkedAt: number,
-): AccountScopedQuotaWindow[] | undefined {
-  if (!Array.isArray(limits)) return undefined
+): AccountScopedQuotaWindow[] {
+  if (!Array.isArray(limits)) return []
   const seen = new Set<string>()
   const scoped: AccountScopedQuotaWindow[] = []
   for (const limit of limits) {
@@ -1974,7 +1994,7 @@ function mapScopedWeeklyLimits(
       checkedAt,
     })
   }
-  return scoped.length ? scoped : undefined
+  return scoped
 }
 
 function mapUsageWindow(
@@ -2027,6 +2047,7 @@ export async function fetchOAuthQuotaSnapshot(input: {
     five_hour: mapUsageWindow(usage.five_hour, checkedAt),
     seven_day: mapUsageWindow(usage.seven_day, checkedAt),
     scoped: mapScopedWeeklyLimits(usage.limits, checkedAt),
+    checkedAt,
   } satisfies OAuthQuotaSnapshot
 }
 
diff --git a/packages/opencode/src/sidebar-state.ts b/packages/opencode/src/sidebar-state.ts
index 545ee6f7..17e75f46 100644
--- a/packages/opencode/src/sidebar-state.ts
+++ b/packages/opencode/src/sidebar-state.ts
@@ -121,7 +121,11 @@ function normalizeAccountQuota(value: unknown): AccountQuota | null {
         }
       })
       .filter((entry): entry is ScopedQuotaWindow => entry != null)
-    if (scoped.length) quota.scoped = scoped
+    // Preserve empty `[]` so a sidebar reader can distinguish "scoped owned
+    // by anthropic-auth, none visible" from "no quota data at all". The OUTER
+    // Array.isArray guard means pre-feature inputs without a `scoped` key are
+    // not affected — only inputs that already carried an array reach this line.
+    quota.scoped = scoped
   }
 
   return Object.keys(quota).length ? quota : null
@@ -284,18 +288,23 @@ export function getCollapsedQuotaSummary(quota: AccountQuota | null): {
     }
   }
 
+  const scopedSegments = scoped.map(
+    (window) =>
+      `${formatScopedQuotaLabel(window.title)}: ${Math.round(window.usedPercent)}%`,
+  )
+  const primarySegments =
+    fiveHourUsedPercent == null && sevenDayUsedPercent == null
+      ? []
+      : [
+          `5h: ${fiveHourUsedPercent == null ? '—' : `${Math.round(fiveHourUsedPercent)}%`}`,
+          `7d: ${sevenDayUsedPercent == null ? '—' : `${Math.round(sevenDayUsedPercent)}%`}`,
+        ]
+
   return {
     fiveHourUsedPercent,
     sevenDayUsedPercent,
     scopedUsedPercents,
-    text: [
-      `5h: ${fiveHourUsedPercent == null ? '—' : `${Math.round(fiveHourUsedPercent)}%`}`,
-      `7d: ${sevenDayUsedPercent == null ? '—' : `${Math.round(sevenDayUsedPercent)}%`}`,
-      ...scoped.map(
-        (window) =>
-          `${formatScopedQuotaLabel(window.title)}: ${Math.round(window.usedPercent)}%`,
-      ),
-    ].join(' '),
+    text: [...primarySegments, ...scopedSegments].join(' '),
   }
 }
 
diff --git a/packages/opencode/src/tests/accounts.test.ts b/packages/opencode/src/tests/accounts.test.ts
index a4ee6086..aa1234ca 100644
--- a/packages/opencode/src/tests/accounts.test.ts
+++ b/packages/opencode/src/tests/accounts.test.ts
@@ -1123,6 +1123,229 @@ describe('FallbackAccountManager', () => {
     ).toEqual(['fable-empty', 'fable-ok'])
   })
 
+  test('preserves an empty scoped quota array through save/load when scoped is the only quota key', async () => {
+    const storage = baseStorage()
+    storage.accounts.push({
+      id: 'empty-scoped-only',
+      type: 'oauth',
+      access: 'a',
+      refresh: 'r',
+      expires: Date.now() + 60 * 60 * 1000,
+      quota: { scoped: [] },
+    })
+    await saveAccounts(storage)
+
+    const loaded = await loadAccounts()
+    const account = expectOAuthAccount(loaded?.accounts[0])
+    expect(account.quota).toBeDefined()
+    expect(account.quota?.scoped).toBeDefined()
+    expect(account.quota?.scoped).toEqual([])
+  })
+
+  test('preserves an empty scoped quota array alongside five_hour', async () => {
+    const storage = baseStorage()
+    storage.accounts.push({
+      id: 'empty-scoped-with-five-hour',
+      type: 'oauth',
+      access: 'a',
+      refresh: 'r',
+      expires: Date.now() + 60 * 60 * 1000,
+      quota: {
+        five_hour: {
+          usedPercent: 10,
+          remainingPercent: 90,
+          checkedAt: 1_000,
+        },
+        scoped: [],
+      },
+    })
+    await saveAccounts(storage)
+
+    const loaded = await loadAccounts()
+    const account = expectOAuthAccount(loaded?.accounts[0])
+    expect(account.quota?.five_hour?.usedPercent).toBe(10)
+    expect(account.quota?.scoped).toBeDefined()
+    expect(account.quota?.scoped).toEqual([])
+  })
+
+  test('routing predicate treats empty scoped array as not exhausted (invariant lock)', () => {
+    const quota: OAuthQuotaSnapshot = {
+      five_hour: {
+        usedPercent: 10,
+        remainingPercent: 90,
+        checkedAt: 1_000,
+      },
+      seven_day: {
+        usedPercent: 5,
+        remainingPercent: 95,
+        checkedAt: 1_000,
+      },
+      scoped: [],
+    }
+    expect(quotaSnapshotModelScopeIsExhausted(quota, 'claude-fable-5')).toBe(
+      false,
+    )
+    expect(quotaSnapshotPassesModelScope(quota, 'claude-fable-5')).toBe(true)
+    expect(quotaSnapshotPassesModelScope(quota, 'claude-opus-4-8')).toBe(true)
+  })
+
+  test('mergeAccountRuntimeState: windowless {scoped:[]} replaces stale exhausted-Fable quota', async () => {
+    // Persist an exhausted-Fable scoped window at T1, then save a windowless
+    // empty-scoped snapshot stamped T2 > T1. mergeAccountRuntimeState must NOT
+    // treat the empty snapshot as stale and resurrect the old Fable window —
+    // loadAccounts must return scoped: [].
+    const accountId = 'merge-empty-scoped'
+    const T1 = 1_000
+    const T2 = 2_000
+
+    const first = baseStorage()
+    first.accounts.push({
+      id: accountId,
+      type: 'oauth',
+      access: 'a',
+      refresh: 'r',
+      expires: Date.now() + 60 * 60 * 1000,
+      quota: {
+        five_hour: {
+          usedPercent: 20,
+          remainingPercent: 80,
+          checkedAt: T1,
+        },
+        seven_day: {
+          usedPercent: 15,
+          remainingPercent: 85,
+          checkedAt: T1,
+        },
+        scoped: [
+          {
+            id: 'claude-weekly-scoped-fable',
+            title: 'Fable only',
+            modelName: 'Fable',
+            usedPercent: 100,
+            remainingPercent: 0,
+            checkedAt: T1,
+          },
+        ],
+      },
+    })
+    await saveAccounts(first)
+
+    const second = baseStorage()
+    second.accounts.push({
+      id: accountId,
+      type: 'oauth',
+      access: 'a',
+      refresh: 'r',
+      expires: Date.now() + 60 * 60 * 1000,
+      quota: { scoped: [], checkedAt: T2 },
+    })
+    await saveAccounts(second)
+
+    const loaded = await loadAccounts()
+    const account = expectOAuthAccount(
+      loaded?.accounts.find((entry) => entry.id === accountId),
+    )
+    expect(account.quota?.scoped).toEqual([])
+  })
+
+  test('mergeAccountRuntimeState: real promo-end path lands empty scoped', async () => {
+    // Reachable-path lock: persist an account with five_hour/seven_day + a
+    // Fable scoped window at T1, then save the post-promo snapshot (5h/7d at
+    // T2, scoped: [], top-level checkedAt: T2). Loaded quota.scoped must be [].
+    const accountId = 'merge-promo-end'
+    const T1 = 1_000
+    const T2 = 2_000
+
+    const first = baseStorage()
+    first.accounts.push({
+      id: accountId,
+      type: 'oauth',
+      access: 'a',
+      refresh: 'r',
+      expires: Date.now() + 60 * 60 * 1000,
+      quota: {
+        five_hour: {
+          usedPercent: 20,
+          remainingPercent: 80,
+          checkedAt: T1,
+        },
+        seven_day: {
+          usedPercent: 15,
+          remainingPercent: 85,
+          checkedAt: T1,
+        },
+        scoped: [
+          {
+            id: 'claude-weekly-scoped-fable',
+            title: 'Fable only',
+            modelName: 'Fable',
+            usedPercent: 42,
+            remainingPercent: 58,
+            checkedAt: T1,
+          },
+        ],
+      },
+    })
+    await saveAccounts(first)
+
+    const second = baseStorage()
+    second.accounts.push({
+      id: accountId,
+      type: 'oauth',
+      access: 'a',
+      refresh: 'r',
+      expires: Date.now() + 60 * 60 * 1000,
+      quota: {
+        five_hour: {
+          usedPercent: 25,
+          remainingPercent: 75,
+          checkedAt: T2,
+        },
+        seven_day: {
+          usedPercent: 20,
+          remainingPercent: 80,
+          checkedAt: T2,
+        },
+        scoped: [],
+        checkedAt: T2,
+      },
+    })
+    await saveAccounts(second)
+
+    const loaded = await loadAccounts()
+    const account = expectOAuthAccount(
+      loaded?.accounts.find((entry) => entry.id === accountId),
+    )
+    expect(account.quota?.scoped).toEqual([])
+  })
+
+  test('top-level checkedAt round-trips through save/load', async () => {
+    const storage = baseStorage()
+    const stampedAt = 1_234_567
+    storage.accounts.push({
+      id: 'with-checked-at',
+      type: 'oauth',
+      access: 'a',
+      refresh: 'r',
+      expires: Date.now() + 60 * 60 * 1000,
+      quota: {
+        five_hour: {
+          usedPercent: 10,
+          remainingPercent: 90,
+          checkedAt: stampedAt,
+        },
+        checkedAt: stampedAt,
+      },
+    })
+    await saveAccounts(storage)
+
+    const loaded = await loadAccounts()
+    const account = expectOAuthAccount(
+      loaded?.accounts.find((entry) => entry.id === 'with-checked-at'),
+    )
+    expect(account.quota?.checkedAt).toBe(stampedAt)
+  })
+
   test('refreshes fallback tokens within the four-hour minimum window', async () => {
     const storage = baseStorage()
     storage.refresh = {
diff --git a/packages/opencode/src/tests/sidebar-state.test.ts b/packages/opencode/src/tests/sidebar-state.test.ts
index 23acc4e0..d387da8a 100644
--- a/packages/opencode/src/tests/sidebar-state.test.ts
+++ b/packages/opencode/src/tests/sidebar-state.test.ts
@@ -191,6 +191,40 @@ describe('getCollapsedQuotaSummary', () => {
     expect(getCollapsedQuotaSummary(null).text).toBeNull()
     expect(getCollapsedQuotaSummary({}).text).toBeNull()
   })
+
+  test('omits 5h/7d placeholders when only scoped windows are visible', () => {
+    const summary = getCollapsedQuotaSummary({
+      scoped: [
+        {
+          id: 'claude-weekly-scoped-fable',
+          title: 'Fable only',
+          modelName: 'Fable',
+          usedPercent: 100,
+          remainingPercent: 0,
+        },
+      ],
+    })
+    expect(summary.text).toBe('Fa: 100%')
+    expect(summary.text).not.toContain('5h:')
+    expect(summary.text).not.toContain('7d:')
+    expect(summary.text).not.toContain('—')
+  })
+
+  test('preserves partial-dash primary segment alongside scoped windows', () => {
+    const summary = getCollapsedQuotaSummary({
+      five_hour: { usedPercent: 23, remainingPercent: 77 },
+      scoped: [
+        {
+          id: 'claude-weekly-scoped-fable',
+          title: 'Fable only',
+          modelName: 'Fable',
+          usedPercent: 42,
+          remainingPercent: 58,
+        },
+      ],
+    })
+    expect(summary.text).toBe('5h: 23% 7d: — Fa: 42%')
+  })
 })
 
 describe('normalizeSidebarState', () => {
@@ -229,6 +263,18 @@ describe('normalizeSidebarState', () => {
       },
     ])
   })
+
+  test('preserves empty scoped quota array when scoped is the only quota key', () => {
+    const normalized = normalizeSidebarState({
+      main: { quota: { scoped: [] } },
+      fallbacks: [],
+      route: 'main',
+      lastUpdated: 0,
+    })
+
+    expect(normalized.main.quota).not.toBeNull()
+    expect(normalized.main.quota?.scoped).toEqual([])
+  })
 })
 
 describe('computeQuotaPacing', () => {