[VFR] Build presentation timestamp index

[yutthaphon]

Problem

VFR navigation and frame snapping must use source presentation timestamps rather than nominal FPS.

Change

Complete the bounded work for this issue without importing later milestone scope.

Behavior

Before: The required capability, decision, or evidence is incomplete.
After: The named outcome is reviewable and satisfies its linked specification and milestone gates.

Acceptance

• Dependencies and stable IDs are linked.
• Observable acceptance evidence is recorded.
• Security, compatibility, recovery, Windows, EN/TH, theme, and accessibility impacts are handled where applicable.
• No local Plan/ file is uploaded.

[yutthaphon]

Validation + Freeze Evidence — C3 through C14

Status: Partial Evidence Substantiated (Contracts Frozen; Source Implementation Not Materialized)

Validation & Freeze Execution Summary

This issue covers the VFR presentation timestamp index contract specification and schema validation. The evidence below documents the complete governance chain from initial validation through post-correction acceptance.

C3: Contract Validation (26 Checks Passed)

• Authority: .agents/handoffs/implementation-builder/VID-IMPL-P00-004-contract-validation-and-freeze.md
• Validation Scope: All four candidate JSON files parsed and validated without error:
  • Descriptor: presentation-observation-contract.json (artifact_version: 1.0.0-p00)
  • Success schema: presentation-observation.schema.json with 65536 observation limit, 256 stream limit
  • Failure schema: presentation-observation-failure.schema.json (14 exact durable-effect codes)
  • Bundle: schema-bundle.json (all candidates bound with NOT_MATERIALIZED hashes)
• Cross-File Validation: All 26 structural and semantic checks passed
• Evidence Artifacts: Full transaction manifest, hash registry, and validation logs recorded

Logical-Atomic FREEZE-C3 Committed

• Transaction ID: VID-IMPL-P00-004-FREEZE-C3
• Frozen Hashes:
  • Descriptor: 748f8593ca9aebf9118fa2bc91d73af048cf8e47c758b742c2fc3731abd0e158
  • Bundle: 1e090145fff348078a16dc8ade251cddf9640c826a09661b067de8c28e39f27d
  • Manifest: c62457c65297cf7a254ea892bc7a5cb19461503f1392ef7a55aacade3f233464
  • Freeze marker: 10c1f61c4c1472ecfc6da86474549f6683be822d480fb82c16c923ba8cb932fd
• Frozen Contracts: All canonical contract files locked; no mutations during subsequent phases
• Evidence Path: Video Localization/specifications/evidence/PHASE-00-IMPLEMENTATION/VID-IMPL-P00-004/

C12: Additive Freeze Correction (Approval/Manifest Cross-Binding)

• Authority: .agents/handoffs/implementation-builder/VID-IMPL-P00-004-freeze-correction-c12.md
• Correction Scope: Repair C11-1 finding (missing bidirectional approval/manifest linkage)
• Non-Mutation Guarantee: C3 marker, descriptor, bundle, schemas remain unchanged
• Correction Hashes:
  • Manifest: cf3060a162e0d60693466bc413ef986681fdc0376b5a2bea9fc8b478fd46f283
  • Approval: b8cd4efd954bcefb53a5710d45379e3ebc677f9947c2c91a8443ef88a5ce5a31
  • Superseding marker: d09c686f31d06e89f48295722769ba5f9f67ddc8e27e8ba5a758fc04b3ec5fce
• Correction Artifacts: Manifest, approval, transaction, journal, and superseding marker published via exact-absent-publication protocol

Luna C14: ACCEPT_FROZEN Verdict

• Reviewer: luna (shared-core-specialist)
• Review Document: .agents/reviews/P00/luna-vid-impl-p00-004-post-correction-review-c14.md
• Verdict: Superseding marker and all correction hashes verified; C3 validity confirmed; no post-correction defect found
• source_implementation: Remains NOT_MATERIALIZED

Implementation Status

Canonical Contracts Frozen: All four candidate JSON files (descriptor, schemas, bundle) are cryptographically bound to frozen hashes and protected from mutation.

Source Implementation: NOT_MATERIALIZED — No VFR implementation code, tests, or runtime adapters are claimed or materialized.

Scope Boundaries: VID-IMPL-P00-004 addresses the presentation timestamp observation contract isolated from prior work items. No silent mutations to 002B1/002B2.

Prior Failed Attempts: Pre-C3 discovery attempts and C2 validation failures are preserved in the evidence tree as disclosed history.

Issue Status

Issue #32 remains OPEN (contracts frozen; awaiting coordinator decision on source implementation authorization).

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Authority: Phase-00 Validation + Freeze Governance (Luna C14 Post-Correction Review) | Audit Date: 2026-08-03 | Evidence Repository: .agents/reviews/P00/, .agents/handoffs/implementation-builder/, Video Localization/contracts/VID-IMPL-P00-004/, Video Localization/specifications/evidence/PHASE-00-IMPLEMENTATION/VID-IMPL-P00-004/