- Add content target to fuzz/Cargo.toml
- Fix font fingerprint build script to use hex string keys instead of byte arrays
- Update fingerprint.rs to use hex string lookups
- Build verification: 54MB binary produced successfully
Acceptance criteria:
- ✅ cargo fuzz build content completes successfully
- ✅ No compilation errors or warnings
- ✅ Harness binary built and available
Closes bf-1c4f6