Implement Comic Manifest episode and panel structure #91

Parent epic: #6

Summary

Implement Comic Manifest episode and panel structure for Comic Manifest v1.

Ownership and dependencies

• Repositories: platform; codex for normative gaps.
• Depends on: Implement strict Comic Manifest parsing and semantic validation #90.
• Plan position: 4 of 12.

Scope and deliverables

• Implement opaque production identity, explicit publication ID binding and revision relationships under the approved architecture.
• Validate ordered panel identifiers, dialogue/captions, content references and cross-panel relationships.
• Enforce Studio naming consistency for episode number, final title and public metadata where applicable.
• Keep creative text inert and separate from reviewed generation-prompt bindings.

Acceptance criteria

• Drafts need not consume publication numbers; published records follow DS-NNNN policy.
• Duplicate/dangling panel references, invalid ordering and inconsistent episode metadata fail.
• Corrections preserve episode identity and cannot silently replace an immutable revision.
• Synthetic structure fixtures pass without real canon, illustration or layout execution.

Implementation guardrails

Follow Constitution v1.0.0 at a9cc8a503aa30e17820edc62ac95f7cbe10e0564 and the boundaries in #6. Use public/synthetic fixtures only. Preserve released Prompt SDK v1, Context Package v1 and Context Builder v1 bytes. Add focused tests and documentation with implementation; the suite task consolidates rather than postpones testing. No implicit retrieval, permission renewal, direct Lore checkout, silent declassification, self-approval or canon promotion. Normative gaps belong in Codex. Orchestration, rendering, production trust onboarding and creative canon remain separately scoped. Creating this issue does not authorize implementation or publication.