Document route-controlled full-vocabulary KLD protocol

Define the vLLM measurement contract, corpus separation, exact MoE route intervention, statistics, receipts, and qualification boundaries. Mark the Qwen SGLang record and Kimi K3 result with their actual vocabulary and natural-route limitations. Add role-specific technical provenance for Local Inference Lab work.\n\nValidation: regenerated INDEX.md, validated relative Markdown targets, compiled the index generator, and ran git diff --check.