Migrate releases templates to shared typography utilities

[jeffmerrick]

Generated description of changes:

Replaces ad-hoc text/heading class lists across the releases templates (hero-card, section, intro-toc-row, card-text-block, release-item, and the releases list layout) with the heading-*, body-*, and font-overline @utility classes introduced in #19289, so the releases pages pick up the shared type scale. Margin overrides (m-0!) are added where a heading utility would otherwise inject an unwanted mb-2.

[github-actions]

Pre-merge Review — Last updated 2026-05-26T22:02:31Z

Tip

Summary: Infra/template refactor: swaps ad-hoc Tailwind class strings (text-xl md:text-2xl …, font-mono text-sm tracking-wider uppercase, etc.) for shared @utility classes (heading-xl/heading-1/heading-2/heading-3, body-base/body-lg, font-overline) across six layouts/releases/ partials. All six referenced utilities are defined in theme/src/scss/_utilities-shared.scss, so the migration won't produce undefined classes; m-0! is added where needed to suppress the mb-2 that the heading utilities introduce. No content, frontmatter, or routing changes — risk is purely visual, and at breakpoint boundaries the new scale is intentionally different from the old class lists (e.g., the hero <h1> drops lg:text-6xl, release-item <h2> jumps from text-3xl to text-4xl at the base size). Worth spot-checking /releases/ and a release detail page in a browser before merging.

Review confidence:

Dimension	Level	Notes
mechanics	HIGH	All migrated utilities exist; m-0! correctly suppresses utility-introduced margins.
facts	HIGH	No factual claims in this diff.

Investigation log

• Cross-sibling reads: not run (not in a templated section)
• External claim verification: not run (no claims in this diff)
• Cited-claim spot-checks: not run (no cited claims)
• Frontmatter sweep: not run (no frontmatter in diff)
• Temporal-trigger sweep: not run (no trigger words)
• Code execution: not run (no static/programs/ change)
• Code-examples checks: not run (no fenced code blocks in content files)
• Editorial-balance pass: not run (not under content/blog/)

🚨 Outstanding	⚠️ Low-confidence	💡 Pre-existing	✅ Resolved
0	0	0	0

🔍 Verification trail

No verifiable claims extracted from this diff.

🚨 Outstanding in this PR

No outstanding findings in this PR.

⚠️ Low-confidence

No low-confidence findings.

💡 Pre-existing issues in touched files (optional)

No pre-existing issues in touched files.

✅ Resolved since last review

No items resolved since the last review.

📜 Review history

• 2026-05-26T22:02:31Z — Typography-utility migration across six layouts/releases/ partials; all referenced utilities resolve in _utilities-shared.scss, no blockers. (07a7ef4)

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Lighthouse Performance Report

Commit: 07a7ef4 | Metric definitions

Page	Device	Score	FCP	LCP	TBT	CLS	SI
Homepage	Mobile	🔴 36	3.1s	5.8s	2133ms	0.072	7.9s
Homepage	Desktop	🟡 78	0.8s	1.1s	301ms	0.059	2.9s
Install Pulumi	Mobile	🟡 52	5.3s	8.7s	292ms	0.027	8.2s
Install Pulumi	Desktop	🟡 80	1.3s	2.0s	22ms	0.001	3.0s
AWS Get Started	Mobile	🟡 54	5.1s	8.4s	216ms	0.076	8.0s
AWS Get Started	Desktop	🟡 83	1.3s	1.7s	24ms	0.020	3.0s