Merge 38ee755033 into 78d6e5931c

## Summary

**What is the goal of this PR?**
- Minor correction to the `debugging_monitor.py` script instructions

**What changes are included?**
- `pyserial` should be installed, NOT `serial`, which is a [different
lib](https://pypi.org/project/serial/)
- Added macOS serial port

## Additional Context

- Just a minor docs update. I can confirm the debugging script is
working great on macOS

---

### AI Usage

While CrossPoint doesn't have restrictions on AI tools in contributing,
please be transparent about their usage as it
helps set the right context for reviewers.

Did you use AI tools to help write this code? _**< NO >**_

README.md

@@ -102,13 +102,18 @@ After flashing the new features, it’s recommended to capture detailed logs fro
 First, make sure all required Python packages are installed:
 
 ```python
-python3 -m pip install serial colorama matplotlib
+python3 -m pip install pyserial colorama matplotlib
 ```
 after that run the script:
 ```sh
+# For Linux
+# This was tested on Debian and should work on most Linux systems.
 python3 scripts/debugging_monitor.py
+
+# For macOS
+python3 scripts/debugging_monitor.py /dev/cu.usbmodem2101
 ```
-This was tested on Debian and should work on most Linux systems. Minor adjustments may be required for Windows or macOS.
+Minor adjustments may be required for Windows.
 
 ## Internals
 

src/activities/network/WifiSelectionActivity.cpp

@@ -520,7 +520,7 @@ void WifiSelectionActivity::renderNetworkList() const {
     const auto height = renderer.getLineHeight(UI_10_FONT_ID);
     const auto top = (pageHeight - height) / 2;
     renderer.drawCenteredText(UI_10_FONT_ID, top, "No networks found");
-    renderer.drawCenteredText(SMALL_FONT_ID, top + height + 10, "Press OK to scan again");
+    renderer.drawCenteredText(SMALL_FONT_ID, top + height + 10, "Press Connect to scan again");
   } else {
     // Calculate how many networks we can display
     constexpr int startY = 60;

src/activities/util/KeyboardEntryActivity.cpp

@@ -92,8 +92,26 @@ void KeyboardEntryActivity::handleKeyPress() {
   // Handle special row (bottom row with shift, space, backspace, done)
   if (selectedRow == SPECIAL_ROW) {
     if (selectedCol >= SHIFT_COL && selectedCol < SPACE_COL) {
-      // Shift toggle
+      // Shift toggle (double-tap enables caps lock)
+      const unsigned long now = millis();
+      const bool isDoubleTap = (lastShiftTapMs != 0) && ((now - lastShiftTapMs) <= SHIFT_DOUBLE_TAP_MS);
+
+      if (capsLockActive) {
+        capsLockActive = false;
+        shiftActive = false;
+        lastShiftTapMs = 0;
+        return;
+      }
+
+      if (isDoubleTap) {
+        capsLockActive = true;
+        shiftActive = true;
+        lastShiftTapMs = 0;
+        return;
+      }
+
       shiftActive = !shiftActive;
+      lastShiftTapMs = now;
       return;
     }
 
@@ -131,8 +149,9 @@ void KeyboardEntryActivity::handleKeyPress() {
   if (maxLength == 0 || text.length() < maxLength) {
     text += c;
     // Auto-disable shift after typing a letter
-    if (shiftActive && ((c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z'))) {
+    if (shiftActive && !capsLockActive && ((c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z'))) {
       shiftActive = false;
+      lastShiftTapMs = 0;
     }
   }
 }
@@ -318,7 +337,8 @@ void KeyboardEntryActivity::render() const {
 
       // SHIFT key (logical col 0, spans 2 key widths)
       const bool shiftSelected = (selectedRow == 4 && selectedCol >= SHIFT_COL && selectedCol < SPACE_COL);
-      renderItemWithSelector(currentX + 2, rowY, shiftActive ? "SHIFT" : "shift", shiftSelected);
+      const char* shiftLabel = capsLockActive ? "CAPS" : (shiftActive ? "SHIFT" : "shift");
+      renderItemWithSelector(currentX + 2, rowY, shiftLabel, shiftSelected);
       currentX += 2 * (keyWidth + keySpacing);
 
       // Space bar (logical cols 2-6, spans 5 key widths)

src/activities/util/KeyboardEntryActivity.h

@@ -71,6 +71,10 @@ class KeyboardEntryActivity : public Activity {
   int selectedRow = 0;
   int selectedCol = 0;
   bool shiftActive = false;
+  bool capsLockActive = false;
+  unsigned long lastShiftTapMs = 0;
+
+  static constexpr unsigned long SHIFT_DOUBLE_TAP_MS = 500;
 
   // Callbacks
   OnCompleteCallback onComplete;