- Updated `Cargo.toml` and `Cargo.lock` to downgrade `rand_core` to 0.6.4 and add `rand_chacha` dependency with `serde1` feature.
- Implemented `Rng` struct wrapping `ChaCha8Rng` with seed initialization, stream selection, and number generation methods.
- Added `rng_new`, `rng_from_seed`, `rng_set_stream`, `rng_next_u32`, `rng_next_u64`, `rng_fill_bytes`, `rng_gen_f32`, and `rng_gen_gaussian` functions.
- Made `value` field in `Score` and `values` field in `OptimizationResult` public.
- Implemented `Distribution::sample` method that generates Gaussian numbers when moments are available.
- Added `From<f32>` implementation for `Score`.
- Implemented `optimize` function that evaluates candidates using cloned RNG streams and returns sorted results.
- Added integration test `test_optimize` that verifies optimization sorting behavior.
- Replaced `bitcode` crate with `bincode` in workspace dependencies.
- Added new crate `varo` for random optimization with `Varo` trait, `Distribution`, and `optimize` function.
- Defined `Root` world struct placeholder in `vanth` crate.
- Created `reference.rs` test module in `vanth` with custom components and events.
- Added TODOs in `varo` for RNG implementation and `optimize` function.
