Track Planning / Ghost Track Placement Tool

[lordscarlet]

Summary
Introduce a feature that allows players to plan track before committing to building it. This would let a player place “ghost” or semi‑transparent tiles on the map to visualize potential routes and see the associated costs.

Problem / Motivation
During gameplay—especially on complex maps or when money is tight—players often need to explore multiple build options before deciding. Currently, this requires mental math or external tools. A built‑in planning mode would streamline decision‑making and reduce errors.

Proposed Functionality

• Add a Track Planning Mode available at any time outside the Build Phase (or potentially at any time, depending on implementation constraints).
• In this mode, players can place ghosted / preview track tiles on the board.
• The UI should calculate and display the total cost of the planned track, updating dynamically as tiles are added or removed.
• Planned tiles should not affect the game state until the player commits to building during the Build Phase.

Optional Enhancements

• Ability to save multiple plan variations.
• Toggle to show/hide planned track.
• Clear visual differentiation between planned and built tiles (opacity, tint, dashed outline, etc.).
• Simple UI controls to exit planning mode and discard the plan.

Benefits

• Reduces cognitive load and manual calculation.
• Helps players avoid costly mistakes.
• Improves UX for both new and experienced players.
• Mirrors the kind of pre‑visualization players naturally do in the physical game.