fix: fail fast when wasm worker bootstrap hangs

[hardfist]

Summary

This adds waitThreadStart: 1000 to the Node WASM entrypoints so worker bootstrap failures fail fast instead of hanging the process.

Root Cause

@emnapi/wasi-threads does not wait for worker bootstrap by default. If a WASI worker fails after thread-spawn returns but before the worker finishes loading, the caller can continue waiting on a thread that never becomes ready, which shows up in CI as a hang.

This change keeps the fix local and minimal on rspack's side by forcing thread startup to complete within 1 second in both the main WASM entrypoint and nested WASM worker entrypoint.

Impact

• avoids indefinite hangs in WASM CI when worker bootstrap fails
• converts the failure mode into a fast timeout/error path
• does not change the normal success path for worker startup

Validation

• node --check crates/node_binding/rspack.wasi.cjs
• node --check crates/node_binding/wasi-worker.mjs
• local commit hook: pnpm run lint:js

[github-actions]

📦 Binary Size-limit

Comparing 49f926a to fix: Revert rstest importFunctionName feature when importDynamic is disabled (#13699) by 9aoy

🎉 Size decreased by 5.34KB from 49.39MB to 49.38MB (⬇️0.01%)

[github-actions]

Rsdoctor Bundle Diff Analysis

Found 6 projects in monorepo, 6 projects with changes.

📊 Quick Summary

Project	Total Size	Change
popular-libs	1.7 MB	-
react-10k	5.7 MB	-
react-1k	826.2 KB	-
rome	984.1 KB	-
react-5k	2.7 MB	-
ui-components	5.0 MB	-

📋 Detailed Reports (Click to expand)

📁 popular-libs

Path: ../build-tools-performance/cases/popular-libs/dist/rsdoctor-data.json

⚠️ No baseline data found - Unable to perform comparison analysis

Metric	Current	Baseline	Change
📊 Total Size	1.7 MB	-	-
📄 JavaScript	1.7 MB	-	-
🎨 CSS	0 B	-	-
🌐 HTML	0 B	-	-
📁 Other Assets	0 B	-	-

📁 react-10k

Path: ../build-tools-performance/cases/react-10k/dist/rsdoctor-data.json

⚠️ No baseline data found - Unable to perform comparison analysis

Metric	Current	Baseline	Change
📊 Total Size	5.7 MB	-	-
📄 JavaScript	5.7 MB	-	-
🎨 CSS	21.0 B	-	-
🌐 HTML	0 B	-	-
📁 Other Assets	0 B	-	-

📁 react-1k

Path: ../build-tools-performance/cases/react-1k/dist/rsdoctor-data.json

⚠️ No baseline data found - Unable to perform comparison analysis

Metric	Current	Baseline	Change
📊 Total Size	826.2 KB	-	-
📄 JavaScript	826.2 KB	-	-
🎨 CSS	0 B	-	-
🌐 HTML	0 B	-	-
📁 Other Assets	0 B	-	-

📁 rome

Path: ../build-tools-performance/cases/rome/dist/rsdoctor-data.json

⚠️ No baseline data found - Unable to perform comparison analysis

Metric	Current	Baseline	Change
📊 Total Size	984.1 KB	-	-
📄 JavaScript	984.1 KB	-	-
🎨 CSS	0 B	-	-
🌐 HTML	0 B	-	-
📁 Other Assets	0 B	-	-

📁 react-5k

Path: ../build-tools-performance/cases/react-5k/dist/rsdoctor-data.json

⚠️ No baseline data found - Unable to perform comparison analysis

Metric	Current	Baseline	Change
📊 Total Size	2.7 MB	-	-
📄 JavaScript	2.7 MB	-	-
🎨 CSS	21.0 B	-	-
🌐 HTML	0 B	-	-
📁 Other Assets	0 B	-	-

📁 ui-components

Path: ../build-tools-performance/cases/ui-components/dist/rsdoctor-data.json

⚠️ No baseline data found - Unable to perform comparison analysis

Metric	Current	Baseline	Change
📊 Total Size	5.0 MB	-	-
📄 JavaScript	4.7 MB	-	-
🎨 CSS	291.6 KB	-	-
🌐 HTML	0 B	-	-
📁 Other Assets	0 B	-	-

Generated by Rsdoctor GitHub Action

[codspeed-hq]

Merging this PR will not alter performance

✅ 28 untouched benchmarks

---

_{Comparing codex/fix-wasm-thread-start-hang (49f926a) with main (edb8211)¹}

Footnotes

1. No successful run was found on main (817208d) during the generation of this report, so edb8211 was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩