[lucabol]

Summary

• add shared oscan and oscan-default executables with explicit per-user sticky profile selection
• preserve qualified profile commands while making automatic fallback opt-in and missing explicit profiles fail closed
• integrate selector ownership, migration, uninstall safety, static Windows linkage, and shared MSI servicing across archive/MSI packaging
• document selection, state locations, upgrade behavior, and release procedures

Validation

• cargo test --quiet
• backend-specific Cargo test matrix for LLVM, Cranelift, and C
• python -m unittest discover -s scripts -p "test_*.py"
• Windows and WSL archive installer coexistence suites
• static-CRT PE dependency inspection
• real WiX MSI build, administrative extraction, and installed-layout verification