feat: build AI agent audit log viewer with advanced filtering and search

[Luchistack]

#Closes #71

Summary

• Implemented the dedicated AuditLogViewer component (src/features/audit/AuditLogViewer.tsx) to track autonomous AI agent actions, compliance evaluations, and cryptographic transaction histories.
• Added structured TypeScript types for audit logs in src/types/audit.ts.

Features & Requirements Addressed

• Search & Filtering: Enabled free-text search across Agent IDs, names, and cryptographic hashes, alongside a filter for action types (payment, policy_check, key_rotation, model_invoke).
• Expandable Metadata View: Added interactive row expansion to inspect detailed JSON metadata payloads and secure verification signals.
• Accessibility: Included full keyboard navigation support, proper aria-expanded attributes, and descriptive screen-reader labels.

Verification & Testing

• Verified correct rendering with robust mock fixtures when no live backend is connected.
• Passed local quality gates (npm run typecheck and npm run lint) cleanly.

#Closes

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[mergekeeper]

MergeKeeper review

Scope: in scope for linked issue #71.
Verdict: clean

The PR successfully implements the AI agent audit log viewer with filtering, search, and expandable metadata views according to the issue requirements.

Reviewed commit: 426c40234762b098bc4de9dcc8868f251b77ab38.
CI and merge eligibility are checked separately.

[mergekeeper]

MergeKeeper merge status

Status: blocked
PR state: open
Mergeability: mergeable
Checked commit: 426c40234762b098bc4de9dcc8868f251b77ab38.

Reason:
GitHub pull request merge request failed with 405: Merge already in progress

Next steps:

1. Check the linked GitHub status and repository-rule details.
2. Fix the reported issue or update the repository rule.
3. Push a new commit or retry after the requirement becomes eligible.

[mergekeeper]

Approved

The PR successfully implements the AI agent audit log viewer with filtering, search, and expandable metadata views according to the issue requirements.