Fix WebAssembly transport timeout crash

[ArthurHeymans]

The browser tool crashes during its initial protocol read because std::time::Instant is unsupported on wasm32-unknown-unknown.

Use web-time for the shared transport timeout bookkeeping so browser builds use a supported monotonic clock while native behavior remains unchanged.

Pin OSS CAD Suite to the last known working release so unrelated nightly Yosys changes do not break the Verilog CI job.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Advanced

Run ID: ebe9c33b-15a1-48ac-a447-cabf54c236a6

📥 Commits

Reviewing files that changed from the base of the PR and between d6e5379 and c4458e4.

⛔ Files ignored due to path filters (1)

• tool/Cargo.lock is excluded by !**/*.lock

📒 Files selected for processing (2)

• tool/Cargo.toml
• tool/src/device.rs

Included review availability: Your plan provides up to 1 included review per hour; 0 remain after this review.

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📝 Walkthrough

Walkthrough

The tool adds web-time as a dependency and imports Duration and Instant from web_time in device.rs.

Changes

Tool time API

Layer / File(s)	Summary
web-time integration tool/Cargo.toml, tool/src/device.rs	The tool adds web-time = "1.1" and uses its Duration and Instant types instead of std::time.

Priority: ⬇️ Low

Estimated code review effort: 1 (Trivial) | ~5 minutes

Change: Bug fix

Merge Risk: ⚪ Minimal · up to c4458

This change addresses the WASM timing compatibility issue without an established regression or merge-blocking risk.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 1…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly describes the main change: fixing a transport timeout crash on WebAssembly.

✨ Finishing Touches 💡 1

🛠️ Fix failing CI checks 💡

• Create stacked PR
• Commit on current branch

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix-wasm-transport-timeout

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