Kia ora @SamuelMarks, and good on ya for this. A live in-browser playground is something I'd half-dreamed about for BarraCUDA and never expected anyone to just go and build. It's basically Godbolt for the compiler, and watching a from-scratch toolchain run a .cu straight in the browser is genuinely a bit magic. The hosted demo made me grin like an idiot. Choice effort, seriously.

A few notes, none of them blockers, and all good knowing it's WiP:

Committed artifacts. web/barracuda.wasm and the minified web/barracuda.js are sitting in the tree. Could we gitignore those and generate them via make wasm (or a small CI job)? For a compiler repo I'd rather not carry a binary blob that goes stale the moment anyone touches a .c, and you've already got the demo hosted, so master doesn't need to ship the build output. Happy to wire up a gh-pages or release-artifact step if that'd help.

build_wasm.sh portability. The export PATH="/opt/homebrew/bin:$PATH" line only helps on a Mac. Reckon we can drop it and just lean on emsdk being on PATH, so she runs sweet on Linux/CI too.

Source list. find src -name "*.c" will drift from the Makefile's curated object list over time (grabs anything new under src/, misses top-level runtime/). Driving the WASM build off the same list the Makefile uses would keep the two honest.

Test deps. puppeteer pulls a whole Chromium down, which is a chunky dependency for this repo. The node FS sanity test (test_wasm_run.js) is lovely and light, though. Could we lean on that one for CI and keep the puppeteer e2e as an opt-in manual target?

Tiny one: in the main.c -o change, on fopen failure it falls back to stdout. I'd lean towards erroring there rather than dumping asm to stdout, but it's a nitpick.

The worker's nicely done too by the way, capturing stdout/stderr, the MEMFS round-trip, the exit-code checks. Mean foundation to build on. Cheers, thanks for putting the work in, legend!

Kia ora! - Happy to help.

0. Committed Artifacts: I've removed web/barracuda.wasm and web/barracuda.js from the repository and added them to .gitignore. They are now treated as generated artifacts and will not be tracked.
1. build_wasm.sh Portability: I deleted the standalone build_wasm.sh script and consolidated the WASM build logic directly into the Makefile under the wasm target. This resolves the hardcoded Mac-specific paths and keeps the build source list in sync.
2. Test Dependencies: I've removed the package.json with the Puppeteer dependency. The end-to-end tests are now relegated to an opt-in manual target (make wasm_test_e2e) that checks for a local ad-hoc installation of Puppeteer before proceeding.
3. File I/O Error Handling: I fixed the logic in src/main.c. The compiler now fails fast and aborts with a BC_ERR_IO error if it cannot open the requested -o output file, rather than silently dumping assembly to stdout.

Let me know if there is anything else that needs adjusting!