fix: Cache drawn shapes

[mateuszJS]

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[Copilot]

Pull Request Overview

This PR implements shape caching functionality to improve rendering performance by caching drawn shapes as textures and reusing them instead of redrawing the vector shapes each frame.

• Adds texture caching system that renders completed shapes to textures
• Refactors shape rendering to use cached textures when available, falling back to vector rendering during editing
• Updates shape completion flow to generate cached textures automatically

Reviewed Changes

Copilot reviewed 9 out of 10 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
src/textures.ts	Adds setTexture function to store cached textures
src/run.ts	Refactors render pass management for texture cache rendering
src/logic/shapes/shapes.zig	Implements shape caching logic and texture size management
src/logic/shapes/bounding_box.zig	Refactors bounding box calculation to return struct instead of vertices
src/logic/index.zig	Integrates cache callbacks and updates render scale handling
src/index.ts	Connects cache callbacks and updates initialization
src/getMultisampleTexture.ts	Removes duplicate texture creation code
src/WebGPU/textureCache.ts	Implements texture cache rendering system
src/WebGPU/pointer.ts	Updates imports and function calls