fix: Optimize memory zig and wgsl

[mateuszJS]

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[Copilot]

Pull Request Overview

This PR optimizes memory usage for Zig and WGSL components by restructuring data layouts and improving GPU buffer handling. The changes focus on reducing memory footprint and improving performance through better data organization.

• Refactored vertex data structures to use more efficient memory layouts with extern structs
• Replaced Float32Array buffers with direct ArrayBuffer handling for better memory control
• Migrated from separate coordinate components to packed vertex structures

Reviewed Changes

Copilot reviewed 19 out of 21 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
src/run.ts	Updated WebGPU program interface to use ArrayBuffer and new vertex data access patterns
src/logic/types.zig	Added extern struct attribute to Point and PointUV for C-compatible memory layout
src/logic/triangle.zig	Restructured triangle vertex data using new DrawInstance and PickInstance structs
src/logic/transform_ui.zig	Updated to use new triangle instance-based rendering approach
src/logic/msdf.zig	Refactored MSDF vertex data to use structured instances instead of flat arrays
src/logic/line.zig	Simplified line rendering to use triangle instances
src/logic/index.zig	Updated main rendering logic to use new asset structure and vertex data format
src/logic/assets.zig	New file containing restructured Asset and vertex data definitions
src/logic/asset.zig	Removed (functionality moved to assets.zig)
src/WebGPU/programs/*/shader.wgsl	Updated shaders to work with new vertex attribute layouts
src/WebGPU/programs/*/getProgram.ts	Modified GPU programs to handle ArrayBuffer instead of Float32Array