- Add HTTP API integration tests (http_api_test.rs)
  - Server health check and connectivity tests
  - Browser redirect functionality testing
  - Admin API endpoint accessibility tests
  - Proper timeout and error handling

- Add storage integration tests (storage_test.rs)
  - S3 endpoint connectivity testing
  - Bucket and object name validation rules
  - Storage size calculation and formatting
  - Compression format support detection

- Add authentication integration tests (auth_integration_test.rs)
  - Credential format validation (access keys, secret keys, session tokens)
  - Authorization header construction and format validation
  - User-Agent classification for different client types
  - Request signature component validation
  - Auth endpoint reachability testing

Features:
- All tests are marked with #[ignore] for manual execution
- Tests gracefully handle server not running scenarios
- Comprehensive documentation for running integration tests
- Proper error handling and timeout management
- Helper functions for test data creation and validation

Usage: cargo test --package e2e_test -- --ignored (requires running RustFS server)

Co-authored-by: anzhengchao <anzhengchao@gmail.com>

Co-authored-by: anzhengchao <anzhengchao@gmail.com>

- Regenerated Cargo.lock to resolve merge conflicts
- Removed temporary verification scripts:
  - final_verification.sh
  - verify_all_prs.sh
- Merged latest changes from main branch