refactor: centralize public profile data

[corwinm]

Summary

• add a shared publicProfile content module for durable identity, career, image, employer, and canonical profile-link data
• use it across About, Connect, footer, header, social sharing, SEO defaults, profile imagery, and ProfilePage structured data
• add regression tests for Corwin's public identity and canonical LinkedIn/GitHub/Bluesky/resume links

Why

These facts were repeated across several components and SEO helpers, making it easy for visible copy, contact URLs, and machine-readable metadata to drift apart.

The resume route is intentionally excluded because application-specific resume work is active in a separate worktree.

Test plan

• TDD RED: profile tests initially failed because the shared module did not exist
• focused profile tests: 2/2 passing
• pnpm lint — 0 warnings/errors
• pnpm typecheck
• pnpm test — 36/36 passing
• pnpm build
• git diff --check
• production browser verification: homepage identity/career copy, profile image, Connect links, header title, and JSON-LD values remained unchanged
• independent pre-commit review: passed with no security concerns or logic errors

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Project	Deployment	Actions	Updated (UTC)
corwinm-remix	Ready	Preview, Comment	Jul 13, 2026 8:40pm