Add Phase 6F and Phase 7 preflight foundations

[200lz]

Summary

• add Phase 6F assurance-bundle interoperability
• add Phase 7A smart preflight and Phase 7B runtime-compatibility foundations
• add the Muse Glimmer 30B reference preflight acceptance case with a deterministic fixed-image probe
• document the architecture, roadmap, and reference workflow

Why

This establishes the shortest usable OMIV path from inspection and preflight to a concise verdict, runtime plan, and assurance artifacts. Muse Glimmer is the first real release-driven acceptance case: any remaining manual step becomes concrete Phase 7 UX backlog.

Validation

Validated locally with the full offline test suite, Ruff, strict mypy, compileall, repository publication controls, and release audits.

Evidence boundaries

This PR adds deterministic preflight/reference artifacts and plans. It does not claim source-to-artifact provenance, semantic or numerical fidelity, performance, safety, production readiness, or a successful runtime execution.

Stacked follow-up

A separate draft PR adds external runtime-evidence ingestion on top of this branch. Keeping it stacked makes the seven-file ingestion change independently reviewable.