diff --git a/apps/desktop-client/src/main/account-health.ts b/apps/desktop-client/src/main/account-health.ts
index 02decd8..470850e 100644
--- a/apps/desktop-client/src/main/account-health.ts
+++ b/apps/desktop-client/src/main/account-health.ts
@@ -19,6 +19,8 @@ import { getPersistedPartition, getSessionHandle } from './session-registry'
 
 const PROBE_TICK_MS = 10_000
 const STALE_AFTER_MS = 45 * 60_000
+const INITIAL_PROBE_MIN_MS = 5_000
+const INITIAL_PROBE_MAX_MS = 3 * 60_000
 const REGULAR_PROBE_MIN_MS = 30 * 60_000
 const REGULAR_PROBE_MAX_MS = STALE_AFTER_MS
 const CONFIRM_BACKOFF_STEPS_MS = [30_000, 120_000] as const
@@ -103,7 +105,7 @@ function resolveKnownPartition(accountId: string): string | null {
 }
 
 function nextInitialProbeAt(now = Date.now()): number {
-  return now
+  return now + randomInt(INITIAL_PROBE_MIN_MS, INITIAL_PROBE_MAX_MS)
 }
 
 function nextRegularProbeAt(now = Date.now()): number {
@@ -311,7 +313,7 @@ function applyExpiredResult(
   record.probeState = 'idle'
   record.authReason = result.reason ?? 'login_redirect'
   record.lastProbeAt = now
-  record.nextProbeAt = nextRegularProbeAt(now)
+  record.nextProbeAt = null
   record.lastAuthFailureAt = now
   record.suspectedExpiredAt = null
   record.confirmFailureCount = 0
@@ -795,58 +797,6 @@ export function markTrackedAccountMissingPartition(
   return snapshot
 }
 
-export function reconcileTrackedAccountRemoteState(
-  account: PublishAccountIdentity,
-  input: {
-    health?: DesktopAccountInfo['health'] | null
-    verifiedAt?: string | null
-    profile?: AccountHealthProfile | null
-  },
-): AccountHealthSnapshot | null {
-  if (input.health !== 'live') {
-    return getAccountHealthSnapshot(account.id)
-  }
-
-  const remoteVerifiedAt = parseVerifiedAt(input.verifiedAt)
-  if (!remoteVerifiedAt) {
-    return getAccountHealthSnapshot(account.id)
-  }
-
-  const record = ensureRecord(account)
-  const newestLocalStateAt = Math.max(
-    record.lastVerifiedAt ?? 0,
-    record.lastAuthFailureAt ?? 0,
-    record.lastProbeAt ?? 0,
-  )
-  if (remoteVerifiedAt <= newestLocalStateAt) {
-    return toPublicSnapshot(record)
-  }
-
-  const previousSignature = snapshotSignature(record)
-  record.authRevision += 1
-  record.platform = account.platform
-  record.authState = 'active'
-  record.probeState = 'idle'
-  record.authReason = 'bind_success'
-  record.lastVerifiedAt = remoteVerifiedAt
-  record.lastProbeAt = remoteVerifiedAt
-  record.nextProbeAt = nextRegularProbeAt()
-  record.lastAuthFailureAt = null
-  record.profile = input.profile ?? record.profile
-  record.sessionFingerprint = input.profile?.subjectUid ?? record.sessionFingerprint
-  record.suspectedExpiredAt = null
-  record.confirmFailureCount = 0
-
-  const snapshot = commitRecord(record, previousSignature)
-  const queuedJob = probeJobs.get(account.id)
-  if (queuedJob?.status === 'queued') {
-    removeQueuedProbeJob(account.id)
-    queuedJob.resolve(snapshot)
-  }
-
-  return snapshot
-}
-
 export function getAccountHealthSnapshot(accountId: string): AccountHealthSnapshot | null {
   ensureInitialized()
   const record = records.get(accountId)
diff --git a/apps/desktop-client/src/main/runtime-controller.ts b/apps/desktop-client/src/main/runtime-controller.ts
index 2f6890c..cecebf5 100644
--- a/apps/desktop-client/src/main/runtime-controller.ts
+++ b/apps/desktop-client/src/main/runtime-controller.ts
@@ -32,7 +32,6 @@ import {
   markTrackedAccountMissingPartition,
   markTrackedAccountBound,
   probeTrackedAccount,
-  reconcileTrackedAccountRemoteState,
   reportAccountFailure,
   syncTrackedAccounts,
 } from './account-health'
@@ -326,21 +325,67 @@ function isAccountOwnedByCurrentClient(account: DesktopAccountInfo): boolean {
 }
 
 function hasLocalAccountAuthorization(account: DesktopAccountInfo): boolean {
-  return isAccountOwnedByCurrentClient(account)
+  return isAccountOwnedByCurrentClient(account) && hasLocalAccountSession(account.id)
 }
 
 function accountRequiresLocalAuthorization(account: DesktopAccountInfo): boolean {
   return Boolean(account.client_id)
 }
 
-function accountRequiresStrictProbe(account: DesktopAccountInfo): boolean {
-  return ['bilibili', 'juejin', 'smzdm'].includes(account.platform)
-}
-
 function shouldReportAccountPresence(account: DesktopAccountInfo): boolean {
   return hasLocalAccountSession(account.id) && isAccountOwnedByCurrentClient(account)
 }
 
+function buildRuntimeAccountDedupeKey(account: DesktopAccountInfo): string {
+  if (isAIPlatformId(account.platform)) {
+    return `ai-platform:${account.platform}`
+  }
+
+  return buildAccountIdentityKey({
+    platform: account.platform,
+    platformUid: account.platform_uid,
+    displayName: account.display_name,
+  })
+}
+
+function accountHealthRank(health: DesktopAccountInfo['health']): number {
+  switch (health) {
+    case 'live':
+      return 4
+    case 'risk':
+      return 3
+    case 'captcha':
+      return 2
+    case 'expired':
+      return 1
+    default:
+      return 0
+  }
+}
+
+function accountTimestamp(value: string | null | undefined): number {
+  return parseTimestamp(value) ?? 0
+}
+
+function shouldPreferRuntimeAccount(
+  candidate: DesktopAccountInfo,
+  current: DesktopAccountInfo,
+): boolean {
+  const candidateHealthRank = accountHealthRank(candidate.health)
+  const currentHealthRank = accountHealthRank(current.health)
+  if (candidateHealthRank !== currentHealthRank) {
+    return candidateHealthRank > currentHealthRank
+  }
+
+  const candidateVerifiedAt = accountTimestamp(candidate.verified_at)
+  const currentVerifiedAt = accountTimestamp(current.verified_at)
+  if (candidateVerifiedAt !== currentVerifiedAt) {
+    return candidateVerifiedAt > currentVerifiedAt
+  }
+
+  return candidate.sync_version > current.sync_version
+}
+
 function runtimePlatformLabel(platform: string): string {
   return getAIPlatformCatalogItem(platform)?.label ?? platform
 }
@@ -988,17 +1033,7 @@ async function syncAccounts(source: 'startup' | 'manual'): Promise<void> {
         ...account,
         platform_uid: normalizedPlatformUid,
       })
-      if (hasLocalAccountAuthorization(account) && !accountRequiresStrictProbe(account)) {
-        reconcileTrackedAccountRemoteState(accountIdentity, {
-          health: account.health,
-          verifiedAt: account.verified_at,
-          profile: {
-            subjectUid: normalizedPlatformUid,
-            displayName: account.display_name,
-            avatarUrl: account.avatar_url,
-          },
-        })
-      } else if (accountRequiresLocalAuthorization(account)) {
+      if (accountRequiresLocalAuthorization(account) && !hasLocalAccountAuthorization(account)) {
         markTrackedAccountMissingPartition(accountIdentity)
       }
       const projected = getProjectedAccountHealth({
@@ -1045,24 +1080,27 @@ async function syncAccounts(source: 'startup' | 'manual'): Promise<void> {
     })
     const duplicateAccounts: DesktopAccountInfo[] = []
     const dedupedAccounts: DesktopAccountInfo[] = []
-    const seenAccountKeys = new Set<string>()
+    const seenAccountIndexes = new Map<string, number>()
 
     for (const account of syncedAccounts) {
       if (!account) {
         continue
       }
 
-      const identityKey = buildAccountIdentityKey({
-        platform: account.platform,
-        platformUid: account.platform_uid,
-        displayName: account.display_name,
-      })
-      if (seenAccountKeys.has(identityKey)) {
-        duplicateAccounts.push(account)
+      const identityKey = buildRuntimeAccountDedupeKey(account)
+      const existingIndex = seenAccountIndexes.get(identityKey)
+      if (existingIndex !== undefined) {
+        const existingAccount = dedupedAccounts[existingIndex]
+        if (shouldPreferRuntimeAccount(account, existingAccount)) {
+          duplicateAccounts.push(existingAccount)
+          dedupedAccounts[existingIndex] = account
+        } else {
+          duplicateAccounts.push(account)
+        }
         continue
       }
 
-      seenAccountKeys.add(identityKey)
+      seenAccountIndexes.set(identityKey, dedupedAccounts.length)
       dedupedAccounts.push(account)
     }
 
@@ -1097,6 +1135,8 @@ async function cleanupDuplicateDesktopAccounts(accounts: DesktopAccountInfo[]):
   for (const account of accounts) {
     try {
       await deleteDesktopAccount(account.id, account.sync_version)
+      await clearSessionHandle(account.id)
+      forgetTrackedAccountHealth(account.id)
     } catch (error) {
       console.warn('[desktop-runtime] duplicate desktop account cleanup failed', {
         accountId: account.id,
@@ -1331,9 +1371,14 @@ export function noteRuntimeAccountBound(account: DesktopAccountInfo): void {
   const existingIndex = state.accounts.findIndex(
     (item) =>
       item.id === normalizedAccount.id ||
+      (isAIPlatformId(normalizedAccount.platform) && item.platform === normalizedAccount.platform) ||
       (item.platform === normalizedAccount.platform &&
         sameAccountPlatformUid(item.platform_uid, normalizedAccount.platform_uid)),
   )
+  const replacedAccount =
+    existingIndex >= 0 && state.accounts[existingIndex].id !== normalizedAccount.id
+      ? state.accounts[existingIndex]
+      : null
 
   if (existingIndex >= 0) {
     state.accounts = state.accounts.map((item, index) =>
@@ -1348,6 +1393,19 @@ export function noteRuntimeAccountBound(account: DesktopAccountInfo): void {
     displayName: normalizedAccount.display_name,
     avatarUrl: normalizedAccount.avatar_url,
   })
+  if (replacedAccount) {
+    state.accountProfiles.delete(replacedAccount.id)
+    forgetTrackedAccountHealth(replacedAccount.id)
+    void clearSessionHandle(replacedAccount.id)
+    void deleteDesktopAccount(replacedAccount.id, replacedAccount.sync_version).catch((error) => {
+      console.warn('[desktop-runtime] replaced desktop account cleanup failed', {
+        accountId: replacedAccount.id,
+        platform: replacedAccount.platform,
+        platformUid: replacedAccount.platform_uid,
+        message: errorMessage(error),
+      })
+    })
+  }
   state.lastAccountsSyncAt = Date.now()
   syncTrackedAccounts(
     state.accounts
diff --git a/apps/desktop-client/src/renderer/views/AiPlatformsView.vue b/apps/desktop-client/src/renderer/views/AiPlatformsView.vue
index 89521a8..67c939a 100644
--- a/apps/desktop-client/src/renderer/views/AiPlatformsView.vue
+++ b/apps/desktop-client/src/renderer/views/AiPlatformsView.vue
@@ -45,9 +45,11 @@ function isLocallyAuthorized(account: AccountRow | null): boolean {
 }
 
 const overview = computed(() => ({
-  configuredPlatforms: desktopMonitoringMediaCatalog.length,
   authorized: platformCards.value.filter((platform) => isLocallyAuthorized(platform.account))
     .length,
+  pending: platformCards.value.filter(
+    (platform) => platform.account && !isLocallyAuthorized(platform.account),
+  ).length,
   onlineClients: snapshot.value?.summary.onlineClients ?? 0,
 }))
 
@@ -259,12 +261,12 @@ async function unbindPlatform(account: AccountRow) {
 
       <div class="stats-strip">
         <div class="stat-card">
-          <div class="stat-label">支持平台</div>
-          <div class="stat-value">{{ overview.configuredPlatforms }}</div>
+          <div class="stat-label">已授权</div>
+          <div class="stat-value">{{ overview.authorized }}</div>
         </div>
         <div class="stat-card">
-          <div class="stat-label">授权正常</div>
-          <div class="stat-value">{{ overview.authorized }}</div>
+          <div class="stat-label">待处理</div>
+          <div class="stat-value">{{ overview.pending }}</div>
         </div>
         <div class="stat-card">
           <div class="stat-label">在线客户端</div>