Add opt-in web tracing to the debugger

[bjdodson-openai]

Description

Adds opt-in web tracing and configuration against Snap's existing web runtime.

• Keeps tracing disabled until explicitly enabled by the host.
• Uses injectable time sources so standalone and browser runtimes behave consistently.
• Preserves exact target identity and reload-safe registration.

Type of Change

• Bug fix (non-breaking change that fixes an issue)
• Documentation improvement
• Performance optimization
• Test improvement
• Other (new debugger capability)

Testing

• Tests pass locally (bazel test //...)
• Added/updated tests for changes (if applicable)
• Tested on multiple platforms (iOS/Android/Web/macOS as applicable)
• Manual testing performed (describe below)

Testing Details

• Incremental branch: CLI 307/307, focused identity/reload 94/94, and new web tracing/query 26/26 passed; web-renderer Bazel passed all 112 specs.
• Assembled debugger stack: npm test passed 436/436; the CLI production build passed.
• Focused //src/valdi_modules/src/valdi/web_renderer:test passed.
• bazel query //... passed.
• The broad Valdi suite reproduced the established 12 unrelated failures; all new debugger specs passed.

Checklist

• Code follows project style guidelines
• Documentation updated (if needed)
• No breaking changes (or documented in description)
• Commit messages follow conventional format
• No secrets, API keys, or internal URLs included

Related Issues

Relates to #154

Additional Context

Stack 13/22. Stacked on #165 (bjd/debugger-component-hierarchy). Review this PR as the single incremental commit 3304c1bb against that base; do not merge it before its parent.

[github-actions]

📊 PR Size: size/L

Total changes: 621 lines (14 files)

Top files changed:

• src/valdi_modules/src/valdi/web_renderer/test/ValdiWebTracing.spec.ts: +237 -0
• src/valdi_modules/src/valdi/web_renderer/src/tracing/ValdiWebTracing.ts: +93 -0
• src/valdi_modules/src/valdi/web_renderer/src/tracing/ChromeDevToolsTracing.ts: +86 -0
• src/valdi_modules/src/valdi/web_renderer/test/ChromeDevToolsTracing.spec.ts: +64 -0
• src/valdi_modules/src/valdi/web_renderer/src/utils/LocationQuery.ts: +41 -0
• src/valdi_modules/src/valdi/web_renderer/test/LocationQuery.spec.ts: +39 -1
• src/valdi_modules/src/valdi/web_renderer/src/tracing/WebTracingConfiguration.ts: +25 -0
• src/valdi_modules/src/valdi/web_renderer/src/ValdiWebRuntime.ts: +9 -3
• npm_modules/cli/debugger/README.md: +4 -3
• npm_modules/cli/src/utils/owlCdpClient.spec.ts: +2 -2

...and 4 more files

_{Size calculated as additions + deletions. Labels: XS (<10), S (<50), M (<250), L (<1000), XL (1000+)}

[github-actions]

⚠️ Bazel & CI Test Results

Test Suite	Result
API Surface Check	✅ success
macOS: C++ & Platform Tests	❌ failure
Test Coverage Delta	✅ success
Snapshot Tests	✅ success
Linux: Build & Export	✅ success
valdi_web Integration Test	✅ success
Linux: Registry Validation	✅ success
Linux: Module Tests	✅ success
Valdi Smoke Tests	✅ success
Linux: Hotreload Smoke	✅ success
Linux: C++ Tests	✅ success
Linux: Build Compiler	✅ success

Some tests failed. Please check the workflow logs for details.

🚀 Bazel remote cache is now enabled - future builds will be faster!

_{Workflow: Valdi CI}