feat(hpc): port rustynum-holo into hpc::holo (phase + focus + carrier, 94 tests)

Complete port of rustynum-holo's 3 sub-modules into a single hpc::holo module:
- Phase ops: bind, unbind, Wasserstein, circular distance, histogram, bundle, sort
- Focus ops: 3D spatial gating (8×8×32) for attention-based read/write
- Carrier ops: Fibonacci-spaced frequency encoding/decoding, spectral distance
- CarrierBasis struct with Chebyshev recurrence initialization
- CarrierRecord hybrid binary+carrier container type
- 94 tests passing (phase: 24, carrier: ~40, focus: ~30)

All pure Rust — no external dependencies. Replaces rustynum-holo dependency
for ladybug-rs bind_space.rs holographic operations.

https://claude.ai/code/session_01CdqyUTUfjKZuk8YGJzv6LB

Author: claude