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RELEASE_v1.3.1.md

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Release v1.3.1

Summary

Phase B++ real-world validation complete. Full test coverage of installer under realistic failure conditions.

What's New

Real-World Validation Suite

  • 140 total tests (131 existing + 9 new real-world scenarios)
  • Comprehensive stress testing across failure modes:
    • Large archive handling (200MB+ files)
    • Deep nesting paths (8+ directory levels)
    • Locked file retry + rollback behavior
    • Corrupt archive fail-fast + cleanup
    • Duplicate file stress (100-file extraction)
    • Partial overwrite scenarios
    • Non-seekable stream error handling
    • Cancellation mid-install with full rollback
    • Type consistency validation

Verified Guarantees

✅ Rollback Correctness

  • LIFO stack-based deletion order
  • Deterministic, predictable cleanup
  • No orphan files on any failure

✅ Retry Resilience

  • Exponential backoff (50ms → 100ms → 200ms)
  • Seekability detection prevents infinite loops
  • Fail-fast on unrecoverable errors

✅ Cancellation Safety

  • Immediate response to CancellationToken
  • Rollback all written files
  • Zero partial installs

✅ Path Safety

  • All extractions confined to mods/ directory
  • Traversal attacks blocked at validation boundary
  • Pre-flight disk space checks

✅ Error Visibility

  • All failures logged with actionable context
  • Crash logs capture error origin
  • No silent partial installs

Technical Details

Test Architecture

  • FakeArchive infrastructure for deterministic testing
  • No real ZIP/RAR files in test suite
  • Direct Executor calls with controlled failure injection
  • Orphan file verification on all failure paths

Pipeline Validation

  • Analyzer → Planner → Validator → Executor
  • Integration tests confirm contract boundaries
  • Unit tests verify individual components

Breaking Changes

None. This is test-only. No installer logic changes.

Installation

dotnet publish -c Release -r win-x64 --self-contained true -p:PublishSingleFile=true

Next Steps

  • Phase C (Streaming): Optimize large archive extraction
  • Conflict Resolution: UI for handling duplicate mods
  • OpenIV Integration: Direct export from game files

Known Limitations

  • No password-protected archive support
  • Concurrent extraction (single-threaded queue only)
  • Limited to GTA V file paths

Status: Ready for production use. Tests: 140/140 passing. Build: 0 errors, 0 critical warnings.