mod: fix clock bugs, add NTP auto-sync, show clock in all headers

- Fix SetTimeActivity immediately dismissing by changing wasReleased to
  wasPressed for all button inputs (matching other subactivities)
- Extract NTP sync into shared TimeSync utility (startNtpSync,
  waitForNtpSync, stopNtpSync) and trigger non-blocking NTP sync on
  every WiFi connection
- Move clock rendering into drawHeader (BaseTheme + LyraTheme) so it
  appears on all screens with a header, positioned symmetrically with
  the battery icon (12px margin, same Y offset, SMALL_FONT_ID)
- Add per-minute auto-refresh on home screen so clock updates without
  button press
- Add RTC time debug log on boot to verify time persistence across
  deep sleep

Co-authored-by: Cursor <cursoragent@cursor.com>

src/activities/network/WifiSelectionActivity.cpp

@@ -12,6 +12,7 @@
 #include "activities/util/KeyboardEntryActivity.h"
 #include "components/UITheme.h"
 #include "fontIds.h"
+#include "util/TimeSync.h"
 
 void WifiSelectionActivity::onEnter() {
   Activity::onEnter();
@@ -243,6 +244,9 @@ void WifiSelectionActivity::checkConnectionStatus() {
     connectedIP = ipStr;
     autoConnecting = false;
 
+    // Start NTP time sync in the background (non-blocking)
+    TimeSync::startNtpSync();
+
     // Save this as the last connected network - SD card operations need lock as
     // we use SPI for both
     {