Fix Territory Layer Performance

[1brucben]

This pull request significantly refactors the TerritoryLayer class to optimize territory rendering performance and simplify color management. The main changes include replacing the priority queue-based tile rendering with a deduplicated array-based queue, packing color values for faster rendering, and reducing per-tile color computation overhead. Additionally, it introduces new benchmarks for performance testing and removes unused imports and methods.

Rendering and performance optimizations:

• Replaced the PriorityQueue for tile rendering with a deduplicated array-based queue (renderQueue) and a bitmap (repaintFlags) to avoid redundant repaints, improving performance and simplifying the render logic. [1] [2]
• Introduced packed RGBA color tables (territoryPacked, borderPacked, etc.) indexed by player ID, reducing per-tile color computation and enabling direct pixel buffer writes. [1] [2] [3] [4]
• Switched tile painting to use Uint32Array views of the image data for faster pixel updates, replacing the previous method that wrote individual color channels. [1] [2] [3]

Codebase simplification:

• Removed unused imports (PriorityQueue, PseudoRandom) and methods (enqueueTile, per-tile color cache), and consolidated per-render-pass cached state for player highlighting and focus. [1] [2] [3] [4]
• Updated per-render logic to cache player-related state and border/defended status, reducing redundant lookups and improving clarity. [1] [2] [3] [4]

Testing improvements:

• Added a new performance benchmark test file TerritoryLayer.perf.test.ts with an ImageData polyfill for jsdom, enabling benchmarking of the Canvas2D-based TerritoryLayer and providing a harness for alternative implementations.

Other minor fixes:

• Fixed a nullable access in AIPlayerExecution.ts by removing the non-null assertion for nukeHandler.