docs(playability): define asset source and runtime roadmap

[blakinio]

Purpose

Define the smallest legally and technically safe route from approved asset inputs to runtime-visible world, UI, text and audio resources.

Deliverables

• source/provenance/local-import/redistribution decision matrix;
• dependency-ordered pack/runtime/decode/resource/import/signing roadmap;
• completed task/checkpoint.

Key result

The existing schema-v1/compiler remain synthetic test infrastructure. Only original project-created synthetic test material is currently approved. Production source, local import, redistribution, signing and profile-specific appearance requirements remain explicit owner/legal/producer decisions. Legacy PR #97 is integrity evidence only, not a Rust runtime or rights contract.

Safety

Implementation is not authorized. No asset bytes, proprietary extraction, schema/code/workflow or unsupported rights claim.

Exact-head validation

Clean restacked head f74f3ffe27766a22aa5243a1a6f67ef8afd30640 is one commit on main@01ff4a09cfe680b9fe4ab9341ee9c0234ea5905d and passed:

• Rust Client run 30711698063;
• Windows job 91400193127: locked metadata, rustfmt, strict Clippy, complete workspace tests and architecture validation;
• Supply Chain job 91400193128;
• repository CI run 30711698164;
• CI / Required job 91400311801;
• exact changed-file review: three owned documentation paths;
• comments, reviews and unresolved review threads: none.

Task

OTC2-20260801-playability-p0-assets