RR-20: renderer default baseline records core 0.14.0 examples

[michaeljgrimm]

Regenerates the renderer's DEFAULT golden baseline (test/golden/opf-examples-png.cover-centering) for the core 0.14 examples (digest d414d352..., 127 decks, 807 slides), the opf-render#131 analogue. Without it the opf-render 0.14.0 publish fails with 'Golden corpus changed'.

• regenerate-goldens run: https://github.com/OpenPresentation/opf-render/actions/runs/37606586266 (14 deck files)
• rel014-baseline-check vs core's opf-examples-png.fa-0-14.sha256.json: sourceEqual true, settingsEqual true, 807 entries, changedSlides 0
• ci.yml keeps golden-override: '' (the temporary override is reverted in the last commit)
• note: test/golden/notes/RR-20-core-0-14.md; fragment: changes/rr-20-golden-core-0-14-0.md

🤖 Generated with Claude Code

---

Note

Low Risk
Fixture-only golden baseline refresh with no production code changes; release-blocking if wrong but validated against core’s reviewed fixture.

Overview
RR-20 bumps the renderer’s default PNG golden baseline (test/golden/opf-examples-png.cover-centering) from core 0.13.0 examples to core 0.14.0, so publish/CI golden gates match the registry core without “Golden corpus changed” failures.

_baseline.json now points at examples digest d414d352... (127 decks, 807 slides vs 126/805). 14 deck *.sha256.json files change: mostly slide #2 hash/byte updates across gallery decks (format-audit / chart example edits in core), plus technical chart fixtures—chart-data-sources shrinks to one slide, chart-type-sampler gains slide #2, and new chart-highlight golden manifest is added.

No renderer logic changes; hashes were regenerated via regenerate-goldens and cross-checked against core’s reviewed opf-examples-png.fa-0-14.sha256.json. Adds changes/rr-20-golden-core-0-14-0.md and test/golden/notes/RR-20-core-0-14.md documenting rationale and verification.

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[github-actions]

regenerate-goldens pushed one commit that rewrites only the decks that moved. Review diff.json and the sheets in the run artifacts before approving: https://github.com/OpenPresentation/opf-render/actions/runs/37606586266. CI was dispatched on the new commit.

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