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feat(wasm): single-window web entry + trunk harness (issue #45)

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The binary now compiles for wasm32 as a runnable web target:

- Split the main-window render into `view_main`, bypassing the
  multi-window id dispatch the browser cannot use.
- Add `run_web` / `boot_web`: a single-window `iced::application`
  entry for wasm (the browser canvas is the only window). Native
  keeps the multi-window `iced::daemon` via cfg-split in `main`.
- Add a `console_error_panic_hook` (wasm-only) for readable panics.
- Add `index.html` + `Trunk.toml` so `trunk serve` builds the wasm
  bundle (no-default-features → no solid3d) with COOP/COEP headers.

Native build and all 75 tests unchanged. Browser runtime (rayon
threads, canvas attach, real file I/O) is the next iteration.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Hakan Seven 2026-06-16 13:16:35 +03:00
commit 157d54a4d4
7 changed files with 93 additions and 1 deletions
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Open CAD Studio</title>
<style>
html, body { margin: 0; padding: 0; width: 100%; height: 100%; overflow: hidden; background: #1e1e1e; }
canvas { display: block; }
</style>
<!-- Trunk builds the wasm32 binary without the `solid3d` feature (no 3-D
solid kernel / vtkio C deps on the web). See issue #45. -->
<link data-trunk rel="rust" data-bin="OpenCADStudio" data-no-default-features />
</head>
<body></body>
</html>