docs: ZeroGPU resident-warmup + fork_move (supersedes lazy-load in D9/§3/§7/§13)

Expose subtalker_dosample UI toggle — closes the last 'all features' gap

docs: brain final sign-off deltas — split version matrix (§10), quota rule E2, Post-v1 deferred items

docs: brain-ratified D8 (per-request LoRA) + final DESIGN/PLAN/README deltas

docs: reflect shipped reality — torch 2.11, per-request LoRA (D8), lazy-load (D9), adaptive residency (M2), long-form chunking (§12), sdpa-only

docs: add studio screenshot to README

Scaffold qwen-voice-studio: Qwen3-TTS core, Gradio studio app, design docs