1v4p5

• Bumped the app version label to 1v4p5.
• Added generic sector learning state and expected sector count to TelemetryFrame.
• Showed SECTOR n / max while a selected track's sector/path reference is still being learned from track length.
• Treated unknown or undefined tracks as a single lap-length sector so sector mode shows SECTOR 1 / 1.
• Colored current sector time green during sector/path learning and red when learning is rejected or cancelled.