merge duplicate TRIGGER_SYNC + START_PAIRING_SERVER cases; remove dead startSubnetScan stub and activeDesktopPairing vars

@@ -695,12 +695,6 @@695695 696696         return { ok: true, data: { pairedDevices, trustedNetworks, status, lastSyncAt, isPro: pro } };697697       }698-      case "TRIGGER_SYNC": {699-        const gate = await requirePro("sync");700-        if (!gate.allowed) return { ok: false, error: "pro_required" };701-        if (!vault.isUnlocked()) return { ok: false, error: "vault_locked" };702-        return { ok: false, error: "no_native_host" };703-      }704698       case "START_PAIRING": {705699         const gate = await requirePro("sync");706700         if (!gate.allowed) return { ok: false, error: "pro_required" };@@ -976,6 +970,9 @@976970         }977971       }978972       case "TRIGGER_SYNC": {973+        const gate = await requirePro("sync");974+        if (!gate.allowed) return { ok: false, error: "pro_required" };975+        if (!vault.isUnlocked()) return { ok: false, error: "vault_locked" };979976         if (isNativePlatform()) {980977           bridge?.ensureServerRunning?.();981978           return { ok: true, data: { syncedCount: 0, mode: "server" as const } };@@ -1023,19 +1020,6 @@10231020         const { ip } = (await bridge?.getLocalIp?.()) ?? { ip: "" };10241021         return { ok: true, data: { ip } };10251022       }1026-      // Desktop: generates a pairing token and starts the subnet scan for QR pairing.1027-      case "START_PAIRING_SERVER": {1028-        if (isNativePlatform()) {1029-          return { ok: false, error: "desktop_only" };1030-        }1031-        const arr = new Uint32Array(1);1032-        crypto.getRandomValues(arr);1033-        const token = String(100000 + (arr[0] % 900000));1034-        activeDesktopPairingToken = token;1035-        activeDesktopPairingExpiry = Date.now() + 5 * 60 * 1000;1036-        startSubnetScan(token, { getLocalAddress: () => null });1037-        return { ok: true, data: { token, expiresIn: 300 } };1038-      }10391023       case "GET_IDENTITY_SUGGESTIONS": {10401024         if (!vault.isUnlocked()) return { ok: false, error: "vault_locked" };10411025         const entries = vault.getEntries();@@ -1071,16 +1055,6 @@10711055   return { ok: true, syncedCount: 0 };10721056 }10731057 1074-// Desktop: starts background subnet scan for QR pairing.1075-function startSubnetScan(1076-  token: string,1077-  _deps: {1078-    getLocalAddress: () => string | null;1079-  }1080-): void {1081-  // TODO: implement subnet scan and WebSocket pairing server1082-}1083-10841058 // Android: populates the in-memory vault used by PeachAutofillService.10851059 async function publishInMemoryVault(entries: VaultEntry[]): Promise<void> {10861060   // eslint-disable-next-line @typescript-eslint/no-explicit-any@@ -1129,9 +1103,6 @@11291103 11301104 // eslint-disable-next-line @typescript-eslint/no-explicit-any11311105 const isNativePlatform = (): boolean => typeof (globalThis as any).Capacitor !== "undefined" && (globalThis as any).isNativePlatform();1132-1133-let activeDesktopPairingToken: string | null = null;1134-let activeDesktopPairingExpiry = 0;11351106 11361107 /** Notify all content scripts that the vault just became available. */11371108 function broadcastToContentScripts(message: { type: string }): void {