Add parse error reporter for log aggregation

[yueyingqwq]

This script parses log files and collects parse errors, generating a sanitized JSON report. It supports multiple log formats and allows for error reporting and parsed output.

Summary

Changes

Testing

Checklist

• Relevant modules affected by these changes build locally
• Tests pass locally
• Diagnostic build log is committed in this PR
• Documentation has been updated, if applicable
• Configuration or schema changes are documented, if applicable
• No generated build artifacts are committed, except the required diagnostic build log
• Changes are scoped to the PR purpose and avoid unrelated cleanup
• Security, privacy, and error-handling implications have been considered

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• I would like to request that my diagnostic build log is removed before merging

[yueyingqwq]

Build Diagnostic Report

Build ID: build-1782058136
Status: passed
Files checked: 2

Build Diagnostic Report
======================
Build ID: build-1782058136
Timestamp: 2026-06-21T16:08:56Z
Python: 3.12.0
Status: passed
---
  [OK] tools/log_aggregator.py
  [OK] tools/parse_error_reporter.py
  [OK] build.py

Diagnostic log submitted for bounty validation.