Document consistent FableLoom character and voice production

[atomantic]

Summary

• document the production architecture for consistent FableLoom character identity, approved voices, and reproducible media provenance
• define pre-rendered entry/hold/exit playback assets and a scoped, half-duplex QR-hosted session protocol
• record Qwen3-TTS as the first richer local voice backend and retain Kokoro/Piper as the zero-setup starting point
• capture diegetic FaceTime calls as a later, non-blocking investigation
• link the implementation epic and child issues from the architecture and feature docs

Tracking

• Deliver consistent-character, consistent-voice FableLoom production and hosted play #5377
• Add approved character production packages to Universe #5378
• Add FableLoom visual canon bindings and capability-aware conditioning #5379
• Add machine-local character voice profiles using Kokoro and Piper #5380
• Add Qwen3-TTS voice design, consented cloning, and optional fine-tuning #5381
• Add FableLoom entry, hold-loop, and transition playback assets #5382
• Add scoped QR-hosted FableLoom sessions with half-duplex protagonist voice #5383
• Add episodic FableLoom production orchestration and continuity review #5384
• Investigate diegetic FaceTime calls as a FableLoom game mechanic #5385

Validation

• git diff --check origin/main...HEAD
• balanced Markdown code fences
• resolved repo-local Markdown links
• sensitive path/email scan

This is documentation-only. Per the requested delivery path, it does not require a code-review loop or CI run.