Add debugger persistent-storage provider

[bjdodson-openai]

Description

Registers PersistentStore inspection as a thin consumer of the generic debugger-provider framework.

• Preserves the existing persistence implementation and read-only snapshot contract.
• Reports availability truthfully per target and generation.
• Keeps response serialization within the generic provider envelope.

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 283/283 and browser renderer 5/5 passed; persistence native/web Bazel targets, TypeScript, lint, syntax, format, and boundary checks passed.
• 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 10/22. Stacked on #162 (bjd/debugger-providers). Review this PR as the single incremental commit 6b72c93b against that base; do not merge it before its parent.

[github-actions]

📊 PR Size: size/L

Total changes: 970 lines (7 files)

Top files changed:

• src/valdi_modules/src/valdi/persistence/src/PersistentStoreDebuggerProvider.ts: +627 -0
• src/valdi_modules/src/valdi/persistence/test/PersistentStoreDebuggerProvider.spec.ts: +221 -0
• npm_modules/cli/src/debugger/browserTools.spec.ts: +66 -0
• npm_modules/cli/debugger/debugger-providers.js: +22 -4
• npm_modules/cli/debugger/README.md: +11 -12
• docs/docs/stdlib-persistence.md: +5 -1
• src/valdi_modules/src/valdi/persistence/src/PersistentStore.ts: +1 -0

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