web-runner: guard capability matrix drift

[EffortlessSteven]

Summary

• add runner-side tests that load docs/capabilities/wasm.json and assert SUPPORTED_MODES matches the current browser-runnable matrix entries
• add explicit matrix metadata for browser-supported analyze presets and assert it matches SUPPORTED_ANALYZE_PRESETS
• assert every native-only matrix command remains rejected by the browser runner

Validation

• npm test --prefix web/runner
• cargo test -p xtask wasm_capability_matrix
• cargo xtask publish-surface --json
• cargo xtask publish-surface --json --verify-publish
• cargo xtask gate --check

Deferred follow-ups

• browser-runner cache behavior
• browser-runner progress events
• retry / rate-limit UX
• optional authenticated fetch

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Pro

Run ID: 058e79c0-7312-459e-8ae2-ccf6791847f7

📥 Commits

Reviewing files that changed from the base of the PR and between a8473c4 and 77aec79.

📒 Files selected for processing (3)

• docs/capabilities/wasm.json
• web/runner/messages.test.mjs
• web/runner/runtime.test.mjs

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch web-runner-matrix-guard

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[gemini-code-assist]

Warning

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[github-actions]

Glass Cockpit

Base: origin/main
Head: HEAD

Change Surface:

• Files: 3
• Insertions: 101
• Deletions: 0

Composition:

• Code: 0.0%
• Test: 0.0%
• Docs: 0.0%
• Config: 100.0%

Contracts:

• API: No
• CLI: No
• Schema: No

Health: 100/100 (A)
Risk: low (0/100)

Review Plan

• web/runner/messages.test.mjs (priority: 2)
• docs/capabilities/wasm.json (priority: 3)
• web/runner/runtime.test.mjs (priority: 3)

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