v0.13.5

UI polish + docs audit.

Fixed

• Model details values ("Estimated time", "Resin needed") no longer sit glued to the action buttons — consistent spacing above every button row.
• Install selected in the Update tab now signals intent: it turns orange when the chosen version differs from the installed one, and stays gray/disabled when the selection is what you already run.

Docs

• Full README audit against the current firmware: Advanced menu bullet lists all nine toggles, Web control description covers upload locking, screen collage gained a new row — System → Advanced, the Low resin! warning and the "VAT refilled?" pre-print ask.

Flashing

• Wireless: dashboard → Update → Install latest, or System → Update on the printer, or upload firmware.bin at http://<printer-ip>/update.
• First install over USB: flash firmware-full.bin at address 0x0.