Wio Tracker L2: Clock settings and the cold-boot time sync

The Wio Tracker L2 has no battery-backed clock, so it gets the same
opt-in saved-Wi-Fi time sync at power-on as the T-Deck
(CAP_BOOT_TIME_SYNC / BootTimeSync).

Split out of 4844a9b (Touch UI follow-ups 4).

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

DEVICES.md

@@ -98,7 +98,9 @@ USB) and the [GitHub releases](https://github.com/ALLFATHER-BV/wadamesh/releases
   mode manually and retry, and please report it.
 - **Seeed Wio Tracker L2**: pre-release touch target under active bring-up. Builds are for
   development and hardware validation only; no public release artifact is
-  promised until the port is verified.
+  promised until the port is verified. It has no battery-backed clock, so the
+  same optional saved-Wi-Fi cold-boot time sync offered on T-Deck is available
+  in Clock settings.
 - **CrowPanel Advance 3.5**: `crowpanel_35_companion_radio_touch` is a
   16 MB flash / 8 MB OPI PSRAM build for the ILI9488/GT911 panel and an SX1262
   in the expansion slot. It starts upright in 480x320 landscape; Display

src/helpers/esp32/BootTimeSync.cpp

@@ -18,8 +18,9 @@
 // the M9 (RTC integrity can be lost across its hard power cut). Keep the runtime
 // gate as narrow as the UI capability gate so a migrated preference file cannot
 // unexpectedly start Wi-Fi on another board.
-// The T-Display P4 joins on its esp-hosted build (see CAP_BOOT_TIME_SYNC).
-#if defined(HAS_TDECK_GT911) || defined(HAS_THINKNODE_M9) || \
+// The T-Display P4 joins on its esp-hosted build (see CAP_BOOT_TIME_SYNC), and the
+// Wio Tracker L2 (no RTC) joins too.
+#if defined(HAS_TDECK_GT911) || defined(HAS_THINKNODE_M9) || defined(HAS_WIO_TRACKER_L2) || \
     (defined(HAS_TDISPLAY_P4) && TDP4_C6_HOSTED)
   #define BOOT_TIME_SYNC_SUPPORTED 1
 #else

src/ui-touch/device_caps.h

@@ -284,9 +284,10 @@
 // Both can opt into the bounded, pre-transport saved-Wi-Fi sync from #383. The
 // T-Display P4's PCF8563 has come back asserting impossible dates, so it gets the
 // same fallback -- on the esp-hosted C6 build only: the sync drives Arduino's real
-// WiFi, which the legacy ESP-AT build must never touch.
+// WiFi, which the legacy ESP-AT build must never touch. The Wio Tracker L2 has
+// no RTC and an ESP32-S3 radio, so it gets the same opt-in.
 #if defined(HAS_TDECK_GT911) || defined(HAS_TDECK_PRO) || defined(HAS_THINKNODE_M9) || \
-    (defined(HAS_TDISPLAY_P4) && TDP4_C6_HOSTED)
+    defined(HAS_WIO_TRACKER_L2) || (defined(HAS_TDISPLAY_P4) && TDP4_C6_HOSTED)
   #define CAP_BOOT_TIME_SYNC 1
 #else
   #define CAP_BOOT_TIME_SYNC 0