docs(api): add Trinity unified API reference v1.0 (#415)

- Part I: HSLM API (model, blocks, constants, attention, VSA reasoning)
- Part II: VSA API (core ops, FHRR details, similarity metrics)
- Part III: FPGA API (synthesis, export formats, resource utilization)
- Part IV: TRI-27 VM (registers, instruction set, memory model)
- Part V: Research APIs (B2T, benchmarks, mining, training)
- Part VI: CLI API (core commands, entry points)
- Part VII: Queen API (bridge, perlexity, research agent)
- Part VIII: Type System (standard, HybridBigInt, linear types, arena allocators)
- Appendix A: Module dependencies
- Appendix B: Quick reference cards (constants, VSA ops)
- Usage examples: HSLM inference, VSA reasoning

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: Antigravity Agent