Fix OTA download (follow GitHub redirect), rework result screens, drop asset rename

OTA downloads always failed because GitHub's browser_download_url
returns a 301/302 redirect to a signed objects.githubusercontent.com
URL, which HTTPUpdate doesn't follow by default. Now sets
HTTPC_STRICT_FOLLOW_REDIRECTS before downloading.

Update results (success and failure) are now shown as a persistent
info screen requiring an explicit tap to dismiss, instead of a
1.2-1.5s auto-vanishing message followed by an automatic restart -
a firmware update result is important enough that it shouldn't be
missable. Also fixes long dynamic titles (e.g. "Update available:
v3.5.0") and the installing-progress label overflowing the screen
edge in some languages.

Release workflow no longer renames the build artifact to
CYD-flightradar.bin before upload; the release asset is just
firmware.bin now, matching what OtaUpdate::checkForUpdate() looks
for. CLAUDE.md's release workflow updated to match.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

src/i18n.h

@@ -334,6 +334,16 @@ enum class StringId : uint8_t {
     OTA_UPDATE_FAILED,
     OTA_UPDATE_SUCCESS,
 
+    // Erfolgs-/Fehler-Ergebnis nach Download+Flash wird jetzt als
+    // dauerhafter Info-Screen mit explizitem Button angezeigt (statt
+    // automatischem Neustart bzw. kurzer, automatisch verschwindender
+    // Meldung) - der Nutzer muss bei einer sicherheitsrelevanten Aktion wie
+    // einem Firmware-Update IMMER aktiv informiert werden und selbst
+    // bestaetigen, siehe menu_screen.cpp::infoScreen().
+    OTA_SUCCESS_BODY,
+    OTA_RESTART_BUTTON,
+    OTA_FAILED_BODY,
+
     COUNT
 };