PR Review Summary

Status: Approved

🪜 Strategic-Fit Decision

Per §9 Strategic-Fit Step-Back:

• Decision: Approve
• Rationale: This is the smallest merge-safe realization of the ticket: it promotes the finished film into the README's proof slot, removes the superseded visual, and leaves the identity narrative intact. There is no correctness debt that warrants Request Changes or a follow-up ticket.

Thanks, Phoebe — the placement is materially stronger than leaving the film below the long identity narrative, and the single-hero discipline keeps the entry point coherent.

🧭 Patch-Blind Premise Snapshot

• Inputs Read Before Patch: Issue #15671; the exact changed-file list; current origin/dev:README.md; the existing centered HTML header pattern; the final film/poster URL; and the README identity anchor that the ticket explicitly protects.
• Expected Solution Shape: Replace the one stale collage with one centered, clickable film poster immediately after the identity anchor, plus a visible link. The patch must not hardcode a new repository binary, duplicate hero visuals, or rewrite the two-hemisphere identity prose; test isolation is docs-only render/URL evidence rather than runtime test construction.
• Patch Verdict: Matches. Exact head 9aae10eeba23cb29e9460aac0de177670d2027dd adds the linked YouTube poster and caption at the required anchor, deletes the old attachment, and changes no identity prose. The poster endpoint returned HTTP 200, and the exact-head required checks are green.
• Premise Coherence: Cohesive with verify-before-assert and the organism identity: the README now places a concrete, inspectable product-film artifact beside the claim it evidences without changing that claim.

🕸️ Context & Graph Linking

• Target Epic / Issue ID: Resolves #15671
• Related Graph Nodes: D#15570, #15668, PR #15670, OpenAI Build Week film lane

🔬 Depth Floor

Challenge: The live YouTube poster is intentionally mutable and externally hosted; if the video or thumbnail disappears, the README hero degrades without a repository change. I checked the current endpoint (HTTP 200) and accept this trade-off because #15671 explicitly prefers synchronization with the selected YouTube thumbnail over committing another binary.

Rhetorical-Drift Audit (per guide §7.4):

• PR description: the described poster/link placement and old-collage removal match the exact-head diff
• Anchor & Echo summaries: N/A — no code/JSDoc surface
• [RETROSPECTIVE] tag: accurately scoped below
• Linked anchors: #15671 and the film-lane references support the stated scope

Findings: Pass — no implementation or identity-framing overshoot found.

🧠 Graph Ingestion Notes

• [KB_GAP]: None observed.
• [TOOLING_GAP]: None observed.
• [RETROSPECTIVE]: A current proof artifact has higher README value than a stale screenshot when it can occupy the same single-hero slot without expanding the identity narrative.

🎯 Close-Target Audit

• Close-targets identified: #15671
• #15671 is an open documentation/enhancement leaf, not an epic

Findings: Pass.

🪜 Evidence Audit

• PR body declares Evidence: L3 ... → L3 required
• The branch-render receipt covers the ticket's rendered-surface AC; the exact diff independently confirms placement/removal
• No unresolved residual is being promoted to pre-merge evidence
• The live poster endpoint returned HTTP 200
• Exact-head required checks are green

Findings: Pass.

N/A Audits — 📑 📡 🔗

N/A across listed dimensions: this docs-only replacement introduces no public contract, MCP tool surface, workflow convention, or cross-skill integration surface.

🧪 Test-Evidence & Location Audit

• Execution evidence: exact-head required CI green at 9aae10eeba23cb29e9460aac0de177670d2027dd; author-owned GitHub branch-render receipt present
• Reviewer falsifier: live poster URL checked for the named broken-remote-image concern; HTTP 200 with JPEG content
• Test location: N/A — README-only change

Findings: Pass.

📋 Required Actions

No required actions — eligible for human merge.

📊 Evaluation Metrics

• [ARCH_ALIGNMENT]: 100 - The visual proof sits at the intended identity boundary, reuses the README's established centered-markup pattern, and neither adds a binary nor duplicates hero ownership.
• [CONTENT_COMPLETENESS]: 100 - Ticket, PR body, alt text, visible caption, close target, evidence receipt, and post-merge check all cover the docs-only contract.
• [EXECUTION_QUALITY]: 95 - Exact-head diff and CI are clean; five points reflect the consciously accepted durability dependency on YouTube's mutable poster endpoint.
• [PRODUCTIVITY]: 100 - All five acceptance criteria in #15671 are represented by the exact-head patch and evidence.
• [IMPACT]: 70 - A small diff materially improves the repository's first-screen evidence and sends readers directly to the finished product film.
• [COMPLEXITY]: 20 - One Markdown file, one external image/link compound, and one removed attachment create low implementation and review load.
• [EFFORT_PROFILE]: Quick Win - High entry-point value from an eight-line docs delta with no runtime coupling.

Approved at exact head 9aae10eeba23cb29e9460aac0de177670d2027dd; human merge authority remains with @tobiu.