Show status messages on the display

- Clock firmware: 'Connecting to WiFi...' and 'Getting the time...' at
  boot, 'Crashed!' in the OTA-only modes, and 'No WiFi' with the time
  when WiFi is down for over a minute (new DisplayController screen)
- Recovery app: shows its reason, the setup WiFi name, or its IP address,
  then powers the display off (flipdots keep the image)
- StatusScreen and drawTextLines shared by both apps
- Driver: ESP begin() no longer draws 'ESP Connected'
- Tests: No WiFi screen, short reason texts (70 total)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/esp32/logic/boot_policy.cpp

@@ -54,6 +54,24 @@ const char *recoveryReasonText(RecoveryReason reason)
 	}
 }
 
+const char *recoveryReasonShort(RecoveryReason reason)
+{
+	switch (reason)
+	{
+	case RecoveryReason::Wifi:
+		return "no WiFi";
+	case RecoveryReason::Crash:
+		return "crashed";
+	case RecoveryReason::Manual:
+		return "requested";
+	case RecoveryReason::PowerCycle:
+		return "power cycled";
+	case RecoveryReason::None:
+	default:
+		return "no firmware";
+	}
+}
+
 bool powerCyclesRequestRecovery(uint8_t power_on_count)
 {
 	return power_on_count >= POWER_CYCLES_FOR_RECOVERY;