Flight Plan Validation New pre-send checklist with 18 ICAO checks — the app prevents sending an incorrect plan Fuel endurance alerts: warns when endurance is less than or equal to EET ICAO format enforcement: departure/destination limited to 4 letters, aircraft type to 4 alphanumeric characters, speed and flight level normalized automatically Time Fields ETD, EET and Endurance fields now auto-format to HH:MM as you type Invalid times (e.g. 25:00) are flagged before sending Send Flow Send result now shown as a modal popup — no need to scroll to see if the plan was sent Flight number conflicts show the corrected number and offer a one-tap "Send Again" option Aircraft selection list no longer freezes when opened Live Activity Live Activity ends automatically after the flight window — no longer requires reopening the app ETA no longer shows --:-- when ETD and flight time are filled Lists & Sorting Flight plans and extra plans now sorted chronologically by ETD Saved (unsent) extra flight plans now appear in the list marked as not sent Flight Dispatcher can now see all flights of the day Usability Dark/Light mode toggle added to Settings and Login screen Password visibility toggle on Login screen Return key navigates between form fields Unsaved changes warning when closing an editor Aerodrome suggestion chips have larger tap targets Empty states include guidance on next steps Disabled buttons now explain why they are inactive