timer: Add launcher with recent timer history

Replace timer UI with launcher screen showing 4 quick-start options:
- Three most recently used timers
- Timer button for manual entry

Recent timers display MM:SS format and auto-start when selected. Using
a recent timer moves it to front of history. Custom button opens timer
UI with most recent duration and allows the user to start it manually.

Timer history persists across reboots.

Author: vkareh

src/components/settings/Settings.cpp

@@ -45,3 +45,34 @@ void Settings::SaveSettingsToFile() {
   fs.FileWrite(&settingsFile, reinterpret_cast<uint8_t*>(&settings), sizeof(settings));
   fs.FileClose(&settingsFile);
 }
+
+void Settings::AddTimerDuration(uint32_t duration) {
+  // Search for existing duration in array
+  int existingIndex = -1;
+  for (int i = 0; i < 3; i++) {
+    if (settings.lastTimerDurations[i] == duration) {
+      existingIndex = i;
+      break;
+    }
+  }
+
+  // If duration already exists, move it to front
+  if (existingIndex >= 0) {
+    if (existingIndex == 0) {
+      // Already at front, no change needed
+      return;
+    }
+    // Shift elements before existingIndex forward by one
+    for (int i = existingIndex; i > 0; i--) {
+      settings.lastTimerDurations[i] = settings.lastTimerDurations[i - 1];
+    }
+    settings.lastTimerDurations[0] = duration;
+  } else {
+    // New duration - shift all down and insert at front
+    settings.lastTimerDurations[2] = settings.lastTimerDurations[1];
+    settings.lastTimerDurations[1] = settings.lastTimerDurations[0];
+    settings.lastTimerDurations[0] = duration;
+  }
+
+  settingsChanged = true;
+}

src/components/settings/Settings.h

@@ -305,6 +305,15 @@ namespace Pinetime {
         return settings.stepsGoal;
       };
 
+      uint32_t GetLastTimerDuration(uint8_t index) const {
+        if (index >= 3) {
+          return settings.lastTimerDurations[0];
+        }
+        return settings.lastTimerDurations[index];
+      };
+
+      void AddTimerDuration(uint32_t duration);
+
       void SetBleRadioEnabled(bool enabled) {
         bleRadioEnabled = enabled;
       };
@@ -383,6 +392,8 @@ namespace Pinetime {
 
         bool dfuAndFsEnabledOnBoot = false;
         uint16_t heartRateBackgroundPeriod = std::numeric_limits<uint16_t>::max(); // Disabled by default
+
+        uint32_t lastTimerDurations[3] = {300000, 600000, 900000};
       };
 
       SettingsData settings;

src/displayapp/fonts/fonts.json

@@ -7,7 +7,7 @@
          },
          {
             "file": "FontAwesome5-Solid+Brands+Regular.woff",
-            "range": "0xf294, 0xf242, 0xf54b, 0xf21e, 0xf1e6, 0xf017, 0xf129, 0xf03a, 0xf185, 0xf560, 0xf001, 0xf3fd, 0xf1fc, 0xf45d, 0xf59f, 0xf5a0, 0xf027, 0xf028, 0xf6a9, 0xf04b, 0xf04c, 0xf048, 0xf051, 0xf095, 0xf3dd, 0xf04d, 0xf2f2, 0xf024, 0xf252, 0xf569, 0xf06e, 0xf015, 0xf00c, 0xf0f3, 0xf522, 0xf743, 0xf1ec, 0xf55a, 0xf3ed"
+            "range": "0xf294, 0xf242, 0xf54b, 0xf21e, 0xf1e6, 0xf017, 0xf129, 0xf03a, 0xf185, 0xf560, 0xf001, 0xf3fd, 0xf1fc, 0xf45d, 0xf59f, 0xf5a0, 0xf027, 0xf028, 0xf6a9, 0xf04b, 0xf04c, 0xf048, 0xf051, 0xf095, 0xf3dd, 0xf04d, 0xf2f2, 0xf024, 0xf252, 0xf569, 0xf06e, 0xf015, 0xf00c, 0xf0f3, 0xf522, 0xf743, 0xf1ec, 0xf55a, 0xf3ed, 0xf1da, 0xf01e"
          }
       ],
       "bpp": 1,
@@ -59,6 +59,10 @@
          {
             "file": "material-design-icons/MaterialIcons-Regular.ttf",
             "range": "0xf00b, 0xe3aa-0xe3ac, 0xe7f6-0xe7f7, 0xe8b8, 0xef44, 0xe40a"
+         },
+         {
+            "file": "FontAwesome5-Solid+Brands+Regular.woff",
+            "range": "0xf252"
          }
       ],
       "bpp": 1,

src/displayapp/screens/Symbols.h

@@ -42,6 +42,8 @@ namespace Pinetime {
         static constexpr const char* sleep = "\xEE\xBD\x84";
         static constexpr const char* calculator = "\xEF\x87\xAC";
         static constexpr const char* backspace = "\xEF\x95\x9A";
+        static constexpr const char* clockRotateLeft = "\xEF\x87\x9A";
+        static constexpr const char* redo = "\xEF\x80\x9E";
 
         // fontawesome_weathericons.c
         // static constexpr const char* sun = "\xEF\x86\x85";