SKEVER Portal V1 — Login / Clock Refinement V4

Changes in this update:
- Restored the exact supplied SKEVER logo artwork on the login brand panel.
- Clock supports 12-hour and 24-hour modes via the existing portal preference.
- Each of the four clock digits is an independent physical flap.
- Only digits whose value actually changes animate.
- Hour digits remain static during ordinary minute changes.
- At hour rollover (for example 12:59 → 01:00 or 23:59 → 00:00), only the affected hour/minute digits animate.
- Orange colon blinks independently once per second.
- AM/PM appears only in 12-hour mode.
- Dashboard clock keeps the selected 12H/24H preference and has an independent blinking colon.
- Dashboard calendar remains in the persistent top command bar.
- Existing Django authentication, password reset, database and migrations are untouched.

Deployment:
1. Back up the current /home/skeversu/skever-portal-v1/ folder.
2. Upload this package to /home/skeversu/.
3. Extract/overwrite the existing V1 application files.
4. Restart the cPanel Python App.
5. Hard refresh the browser (Ctrl+F5).
6. Do not run migrations for this UI-only refinement.
