Decode SET UP IDLE MODE TEXT command data; bump to 1.11.0

TS 102 223 §6.6.13 support for the SET UP IDLE MODE TEXT (0x28)
proactive command:

- Command qualifier: COMMAND_QUALIFIERS entries may now be callables
  for bitmask-style qualifiers; _idle_text_qualifier decodes bit 1
  as "icon self-explanatory", hides 0x00, falls back to raw hex on
  RFU bits.
- Icon Identifier TLV (0x1E) parsed into icon_id (image record
  number in EF_IMG, 0 = none); rendered as an "Icon" detail row in
  the PWA.
- Zero-length Text String TLV now yields text='' ("remove idle mode
  text") instead of being silently skipped.

Tests: +6 TestIdleModeText cases (8-bit/UCS-2 text, icon TLV,
qualifier variants, empty text) — 285 total. SW cache bumped to
simtrace-analyser-v14.

frontend/index.html

@@ -667,6 +667,7 @@ function cmdRows(cmd) {
     if (cmd.aid) rows.push(['AID', cmd.aid]);
     if (cmd.title) rows.push(['Title', cmd.title]);
     if (cmd.text !== undefined) rows.push(['Text', cmd.text]);
+    if (cmd.icon_id !== undefined) rows.push(['Icon', cmd.icon_id ? 'record #' + cmd.icon_id : 'none']);
     if (cmd.items) {
         for (const it of cmd.items) {
             rows.push(['Item ' + (it.id !== undefined ? '0x' + hx(it.id, 2) : '?'), it.text]);
@@ -1851,7 +1852,7 @@ function onFilterChange() {
 }
 
 // ──────────────────── Versioning ────────────────────
-const PWA_VERSION = '1.10.0';
+const PWA_VERSION = '1.11.0';
 const MIN_SERVER_VERSION = '1.0.0';
 
 function parseVersion(v) {

frontend/sw.js

@@ -1,4 +1,4 @@
-const CACHE = 'simtrace-analyser-v13';
+const CACHE = 'simtrace-analyser-v14';
 
 const PRECACHE = [
     'index.html',