refactor(bot,ui): dedupe bot token parsing, drop redundant turnOn, fix comment

Post-review cleanups, no behaviour change:
- botScanCommands() parsed the command name and its two args with three
  near-identical read-token loops; extracted a single readToken() lambda.
- Fn+Esc lock branch turned the display on twice (the unlock arm repeated
  what the branch head already did); dropped the redundant call.
- setGpioMode()'s comment said "Cycle" (cycling lives in GpioScreen); now
  describes what it actually does — set a specific mode + persist.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

examples/companion_radio/MyMeshBot.h

@@ -388,6 +388,15 @@ int MyMesh::botScanCommands(const char* body, uint8_t hops, uint32_t ts, char* o
                              const char* sender_name, bool actions_allowed) {
   resetPendingBotActions();   // pending actions/flags below are set by tokens in this scan;
                               // caller applies or clears them once it knows if the reply sent
+  // Reads one space-delimited token at p into buf (lowercased, truncated to
+  // cap-1 chars with any overflow consumed too), leaving p on the space/NUL
+  // that ended it. Shared by the command name and its two optional args.
+  auto readToken = [](const char*& p, char* buf, int cap) {
+    int i = 0;
+    while (*p && *p != ' ' && i < cap - 1) buf[i++] = (char)tolower((uint8_t)*p++);
+    buf[i] = '\0';
+    while (*p && *p != ' ') p++;
+  };
   int oi = 0;
   int matched = 0;
   for (const char* p = body; *p; ) {
@@ -398,11 +407,7 @@ int MyMesh::botScanCommands(const char* body, uint8_t hops, uint32_t ts, char* o
     }
     p++;                                          // step past '!'
     char cmd[16];
-    int ci = 0;
+    readToken(p, cmd, sizeof(cmd));
-    while (*p && *p != ' ' && ci < (int)sizeof(cmd) - 1)
-      cmd[ci++] = (char)tolower((uint8_t)*p++);
-    cmd[ci] = '\0';
-    while (*p && *p != ' ') p++;                  // consume any overflow of this token
     if (!cmd[0]) continue;
 
     // Up to two optional arguments: the next one or two space-delimited
@@ -416,17 +421,9 @@ int MyMesh::botScanCommands(const char* body, uint8_t hops, uint32_t ts, char* o
     while (*p == ' ') p++;
     char arg1[16] = "", arg2[16] = "";
     if (*p && *p != '!') {
-      int ai = 0;
+      readToken(p, arg1, sizeof(arg1));
-      while (*p && *p != ' ' && ai < (int)sizeof(arg1) - 1) arg1[ai++] = (char)tolower((uint8_t)*p++);
-      arg1[ai] = '\0';
-      while (*p && *p != ' ') p++;                // consume any overflow of this token
       while (*p == ' ') p++;
-      if (*p && *p != '!') {
+      if (*p && *p != '!') readToken(p, arg2, sizeof(arg2));
-        int bi = 0;
-        while (*p && *p != ' ' && bi < (int)sizeof(arg2) - 1) arg2[bi++] = (char)tolower((uint8_t)*p++);
-        arg2[bi] = '\0';
-        while (*p && *p != ' ') p++;              // consume any overflow of this token
-      }
     }
 
     char seg[80];

examples/companion_radio/ui-new/UITask.cpp

@@ -2146,7 +2146,6 @@ void UITask::pollCardKB() {
     if (_locked) {
       _lock_wake_until = millis() + 2000;
     } else {
-      if (_display && !_display->isOn()) _display->turnOn();
       uint32_t aoff = autoOffMillis();
       if (aoff > 0) _auto_off = millis() + aoff;
     }
@@ -3159,8 +3158,10 @@ static uint16_t readAnalogMv(uint32_t psel) {
 }
 #endif
 
-// Cycle a user GPIO pin's mode (Off/In/Out-low/Out-high), apply it to the
+// Set a user GPIO pin to a specific mode (0=Off 1=In 2=Out-low 3=Out-high
-// actual pin, and persist. Called by GpioScreen on Enter.
+// 4=Analog), apply it to the actual pin, and persist. The Off->In->Out->...
+// cycling itself lives in GpioScreen; the bot's !gpioN on/off and boot
+// restore also route through here.
 void UITask::setGpioMode(int idx, uint8_t mode) {
 #if defined(PIN_GPIO1)
   if (!_node_prefs) return;