Ability to support AWS S3 coverage sync.

[arunshan]

Add S3 Integration for Coverage Report Management

Changes

• Added automatic S3 upload/download of coverage reports
• Implemented S3 path structure for organizing coverage reports by branch/PR
• Added support for multiple repositories in the same S3 bucket via s3-repo-directory
• Added first-time use bootstrapping for new repositories
• Added hybrid approach support (local + S3)

Features

• Automatic Coverage Management: No need to manually upload/download coverage reports
• Organized Storage: Coverage reports are stored in a structured way:

  s3://{bucket}/[{repo-directory}/]{branch-or-pr}/coverage-summary.json
  

• Multi-Repo Support: Use s3-repo-directory to organize multiple repos in one bucket
• First-Time Setup: Automatically handles first-time use by using current coverage as baseline
• Flexible Integration: Supports both full S3 and hybrid (local + S3) approaches

Configuration

New parameters added:

• aws-access-key-id: AWS access key for S3 operations
• aws-secret-access-key: AWS secret key for S3 operations
• aws-region: AWS region (defaults to 'us-east-2')
• s3-bucket: S3 bucket name
• s3-repo-directory: Optional directory for organizing multiple repos
• base-branch: Base branch name (defaults to 'main')
• s3-base-url: Optional base URL for S3 coverage reports

Testing

• Verified S3 upload/download functionality
• Tested multi-repo organization
• Confirmed first-time use bootstrapping
• Validated hybrid approach

Impact

This change significantly simplifies coverage report management by:

• Eliminating the need for repositories to manage their own coverage uploads/downloads
• Providing a consistent way to store and retrieve coverage reports
• Making it easier to compare coverage across branches and PRs
• Supporting multiple repositories in a single S3 bucket

Screenshots

N/A - Backend changes only

Related Issues

N/A

[github-actions]

Coverage Report

• Status: ✅ Passed
• No changes to code coverage between the master branch and the current head branch

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Change from base:	0%
Covered statements:	NaN
Total statements:	NaN