feat(bot): Actions commands, multi-trigger, and user GPIO pins

- Auto-Reply Bot gains Actions (!buzz/!gps/!advert) behind a new per-target
  toggle nested under Commands (bot_actions_dm/ch/room); off by default.
- Bot Trigger fields accept comma-separated multiple phrases, matching any
  one fires the reply.
- New user-assignable GPIO feature (Wio Tracker L1): !gpio1..!gpio4 bot
  commands plus a Tools > GPIO screen. Each pin cycles Off/Input/Output;
  GPIO1/GPIO2 (P0.02/P0.29, the nRF52840's AIN0/AIN5) also offer a read-only
  Analog mode via direct SAADC access. GPIO3/GPIO4 (P0.09/P0.10) are the
  chip's NFC1/NFC2 pins, repurposed as plain GPIO via a one-time UICR
  NFCPINS bit-clear in initVariant() (adapted from Adafruit's own
  nfc_to_gpio example) -- confirmed working on real hardware.
- Fix: DM/room reply-prefix ("@[nick] ") stripping happened at the wrong
  layer, hiding the "To:" header on DM replies and leaking the raw prefix
  into room messages' list view; a related mismatch had the history
  scrollbar's sizing pass wrap room messages with the sender name still
  attached, disagreeing with the actual rendered text.

Build-verified: WioTrackerL1_companion_solo_dual and
WioTrackerL1Eink_companion_solo_dual both compile and link clean
(sizeof(NodePrefs) confirmed 2720 via real build, not guessed).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

examples/companion_radio/ui-new/ToolsScreen.h

@@ -16,6 +16,9 @@ class ToolsScreen : public UIScreen {
     ACT_NEARBY, ACT_LIVESHARE, ACT_TRAIL, ACT_LOCATOR, ACT_COMPASS,
     ACT_BOT, ACT_AUTOADVERT, ACT_REPEATER, ACT_ADMIN,
     ACT_CLOCK, ACT_RINGTONE, ACT_DIAGNOSTICS
+#if defined(PIN_GPIO1)
+    , ACT_GPIO
+#endif
   };
   struct Tool { const char* label; const MiniIcon* icon; Action action; };
   struct Section { const char* name; const MiniIcon* icon; const Tool* tools; uint8_t count; };
@@ -53,6 +56,9 @@ class ToolsScreen : public UIScreen {
       case ACT_CLOCK:       _task->gotoClockTools();        break;
       case ACT_RINGTONE:    _task->gotoRingtoneEditor();    break;
       case ACT_DIAGNOSTICS: _task->gotoDiagnosticsScreen(); break;
+#if defined(PIN_GPIO1)
+      case ACT_GPIO:        _task->gotoGpioScreen();        break;
+#endif
     }
   }
 
@@ -128,9 +134,12 @@ const ToolsScreen::Tool ToolsScreen::SYSTEM_TOOLS[] = {
   { "Clock Tools",     &ICON_ALARM, ACT_CLOCK },
   { "Ringtone Editor", &ICON_NOTE,  ACT_RINGTONE },
   { "Diagnostics",     &ICON_CHART, ACT_DIAGNOSTICS },
+#if defined(PIN_GPIO1)
+  { "GPIO",            &ICON_GEAR,  ACT_GPIO },
+#endif
 };
 const ToolsScreen::Section ToolsScreen::SECTIONS[] = {
   { "Location", &ICON_MAP_CONTACT, LOCATION_TOOLS, 5 },
   { "Comms",    &ICON_ADVERT,      COMMS_TOOLS,    4 },
-  { "System",   &ICON_GEAR,        SYSTEM_TOOLS,   3 },
+  { "System",   &ICON_GEAR,        SYSTEM_TOOLS,   (uint8_t)(sizeof(SYSTEM_TOOLS)/sizeof(SYSTEM_TOOLS[0])) },
 };