1.0.0+kodimov.5: write the programme guide before creating the TV guide

"Create settings for IPTV Simple" created the IPTV Simple instance and
then exported channels and EPG. IPTV Simple could load before epg.xml
existed, Kodi then stored an empty guide for every channel and didn't
ask again for hours (seen on a fresh box). Export first, and stop with
an error if the guide file wasn't written.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

resources/lib/plugin.py

@@ -762,11 +762,17 @@ def create_iptv_settings():
     if os.path.exists(filename):
       res = xbmcgui.Dialog().yesno(addon.getLocalizedString(30322), addon.getLocalizedString(30323))
       if res == False: return
+    # Write the channel list and the programme guide first: if IPTV Simple
+    # starts before epg.xml exists, Kodi stores an empty guide for every
+    # channel and doesn't ask again for hours.
+    export_epg_now()
+    if not os.path.exists(os.path.join(profile_dir, 'epg.xml')):
+      show_notification(addon.getLocalizedString(30324))
+      return
     save_iptv_settings(filename, 'KodiMov+', 'kodimovplus', epg_url)
     # Show Movistar's own channel numbers instead of 1, 2, 3...
     xbmc.executeJSONRPC(json.dumps({'jsonrpc': '2.0', 'id': 1, 'method': 'Settings.SetSettingValue',
                                     'params': {'setting': 'pvrmanager.usebackendchannelnumbers', 'value': True}}))
-    export_epg_now()
     # Restart IPTV Simple so it loads the new instance and channel list.
     for enabled in (False, True):
       xbmc.executeJSONRPC(json.dumps({'jsonrpc': '2.0', 'id': 1, 'method': 'Addons.SetAddonEnabled',