Add vessel tutorial and manual control on main menu

[Shombith03]

Summary

Implements an interactive vessel tutorial and manual control system accessible from the main menu. Players can now double-tap the screen center (or press both gamepad sticks) to take manual control of the AI vessel, with a dedicated first-launch tutorial that guides them through speed control, slow-down, and prism skimming mechanics.

Key Changes

• MainMenuVesselTutorialController: New controller that orchestrates the first-launch vessel tutorial on the main menu. Detects FTUE Phase1 initialization and walks players through:

  • Speed-up input (spreading controllers apart)
  • Slow-down input (bringing controllers together)
  • Prism skimming mechanic
  • Smooth camera transitions from menu to behind-vessel and back
  • Automatic FTUE progression to Phase2 upon completion

• MainMenuVesselReentryController: New controller providing always-available manual vessel control on the main menu. Features:

  • Double-tap detection in screen center region (configurable)
  • Gamepad entry via both stick button press
  • Gamepad B button to exit control
  • Smooth camera panning between menu and gameplay positions
  • Persistent menu state restoration on exit

• VesselTutorialUI: New simple overlay UI component for tutorial prompts and exit button with fade animations and canvas group management

• SkimmerImpactor: Added OnPrismSkimmed static event to detect when a prism is skimmed, enabling tutorial step completion detection

• ScreenSwitcher: Added HideAllUI() and ShowAllUI() public methods to manage NavBar and screen visibility during vessel interactions

• TutorialFlowController: Updated to skip Phase1 flow when the new vessel tutorial is active, preventing duplicate tutorial execution

Implementation Details

• Both controllers use coroutines for smooth camera transitions with configurable pan durations
• Tutorial uses WaitForSustainedInput() helper to require held input for specified duration
• Camera state is stored before transitions and restored when returning to menu
• Time is explicitly unpaused during vessel control to ensure gameplay runs
• AI pilot is disabled during manual control and re-enabled on exit
• Tutorial completion advances FTUE progress to Phase2_GameplayTimer

https://claude.ai/code/session_01XHn6GSZ1cLEFZs3qunpPVL