feat(desktop/account-health): mark freshly bound accounts as live

Bind callbacks now stamp the runtime account as health=live with a fresh
verified_at and seed the health record via markTrackedAccountBound, so the
UI doesn't show a just-bound account as 尚未校验 while waiting for the next
probe. Also let force probes bypass the cached-result short-circuit so the
manual 重新校验 button always re-runs the probe.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/desktop-client/src/main/account-health.ts

@@ -402,7 +402,7 @@ function canUseCachedProbe(
   now = Date.now(),
 ): boolean {
   if (options.force) {
-    return Boolean(record.lastProbeAt && now - record.lastProbeAt < MANUAL_PROBE_MIN_INTERVAL_MS);
+    return false;
   }
 
   if (
@@ -675,6 +675,36 @@ export function forgetTrackedAccountHealth(
   }
 }
 
+export function markTrackedAccountBound(
+  account: PublishAccountIdentity,
+  profile: AccountHealthProfile | null = null,
+): AccountHealthSnapshot {
+  const record = ensureRecord(account);
+  const previousSignature = snapshotSignature(record);
+  const now = Date.now();
+  const resolvedProfile: AccountHealthProfile = {
+    displayName: profile?.displayName ?? account.displayName ?? null,
+    avatarUrl: profile?.avatarUrl ?? null,
+    subjectUid: profile?.subjectUid ?? account.platformUid ?? null,
+  };
+
+  trackedAccounts.set(account.id, account);
+  record.platform = account.platform;
+  record.authState = "active";
+  record.probeState = "idle";
+  record.authReason = "bind_success";
+  record.lastVerifiedAt = now;
+  record.lastProbeAt = now;
+  record.nextProbeAt = nextRegularProbeAt(now);
+  record.lastAuthFailureAt = null;
+  record.profile = resolvedProfile;
+  record.sessionFingerprint = resolvedProfile.subjectUid ?? record.sessionFingerprint;
+  record.suspectedExpiredAt = null;
+  record.confirmFailureCount = 0;
+
+  return commitRecord(record, previousSignature);
+}
+
 export function getAccountHealthSnapshot(accountId: string): AccountHealthSnapshot | null {
   ensureInitialized();
   const record = records.get(accountId);