STATUS: use P2=0C (phone-like, no FCP echo); v1.9.12

_send_status sent F2 00 00 -> the card echoes the FCP of the currently
selected DF on every poll/one-shot STATUS. Phones use P2=0C (no
response expected) to avoid that overhead. Keep P1=00 and the SIM/UICC
P3 distinction (SIM=0x23, UICC=0x00):

  CLA F2 00 0C P3

Affects one-time /api/status-poll and the automatic polling timer.

Version 1.9.11 -> 1.9.12 everywhere; SW cache otaman-v22 -> otaman-v23

frontend/index.html

@@ -18,7 +18,7 @@
 <div class="max-w-7xl mx-auto px-6 py-2">
 
 	<div class="flex items-center justify-between mb-3">
-		<h1 class="text-2xl font-bold text-heading">OTAMan <span id="slogan" class="text-sm font-normal text-gray-500 dark:text-slate-400 ml-2" data-l10n="SIM OTA with a Human Face">SIM OTA with a Human Face</span> <span class="text-xs text-gray-400 dark:text-slate-500 ml-1">v1.9.11</span></h1>
+		<h1 class="text-2xl font-bold text-heading">OTAMan <span id="slogan" class="text-sm font-normal text-gray-500 dark:text-slate-400 ml-2" data-l10n="SIM OTA with a Human Face">SIM OTA with a Human Face</span> <span class="text-xs text-gray-400 dark:text-slate-500 ml-1">v1.9.12</span></h1>
 		<div class="flex items-center gap-4">
 			<button id="install-btn" class="px-2 py-1 text-xs rounded border border-gray-300 dark:border-slate-600 hover:bg-gray-200 dark:hover:bg-slate-700" style="display:none">INSTALL PWA [for offline use]</button>
 			<a href="https://github.com/anttro/otaman" target="_blank" class="text-xs text-gray-400 hover:text-gray-600 dark:text-slate-500 dark:hover:text-slate-300">github</a>

frontend/sw.js

@@ -1,4 +1,4 @@
-const CACHE = 'otaman-v22';
+const CACHE = 'otaman-v23';
 const URLS = [
   'index.html',
   'help.html',