Sticky nav, profile image slot, social links, and AEO/schema updates

[ryanbaumann]

Motivation

• Improve discoverability and answer-engine clarity by aligning visible homepage claims with JSON-LD and adding concrete proof points.
• Surface primary social/content sources (LinkedIn, X, Substack) across the site and schema so links and sharing are explicit.
• Improve accessibility and layout resilience by making the header sticky, adding a skip link, and making the top nav horizontally scrollable on small screens.
• Prevent layout shift and provide a stable visual slot for a local profile image to replace blocked remote fetches.

Description

• Added a skip link and conditional footer links for x and substack and updated the header layout in portfolio/build.mjs and the generated layout HTML.
• Enhanced structured data by expanding jsonLdPerson() with description, knowsAbout, and sameAs sources and adding a jsonLdHomePage() that emits a ProfilePage tied to the person schema.
• Added homepage proof points and a local profileImage slot (with profileImageAlt) that reads dimensions via getImageDimensions() and renders width/height attributes to avoid CLS, plus a checked-in SVG placeholder at portfolio/static/img/ryan-baumann-profile.svg.
• Updated portfolio/style.css to make the header position: sticky, enable horizontal nav scrolling, add .profile-image and .proof-grid styles, and ensure responsive images with height: auto.
• Content and metadata updates in portfolio/content/site.json and portfolio/content/pages/about.md to tighten copy, add Caterpillar and proof points, and set an answerEngineSummary.
• Documentation updates: added CHANGELOG.md entries, LEARNINGS.md additions, and a TODO.md checklist describing the copy/trust pass.

Testing

• Ran the static site build with the portfolio build script (npm run build / node portfolio/build.mjs) and the generator completed and wrote updated pages without errors.
• Ran the repository test script (npm test) to exercise CI-safe test behavior and the test suite completed successfully.
• Verified generated pages include the new ProfilePage and Person JSON-LD, the homepage proof points, and the profile image width/height attributes during the build step.

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Codex Task