feat(about): highlight AI experience and update tech stack (#438)

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

chore(deps): drop @semantic-release/npm and @semantic-release/git plu…

…gins

These plugins push a version bump commit back to main, which fails
branch protection (signed commits required). Since this project is
not published to npm, GitHub releases and tags are sufficient.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

fix: correct line-height and hamburger overlay on mobile/large screens (

#433)

* fix: restore default line-height on UsesSection call-to-action text

line-height: 1 caused cramped spacing on mobile when CTA text wrapped.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* fix: align hamburger menu overlay with navbar on large screens

top: 8.5% created a gap on tall viewports where page content was
visible behind the open menu. Changed to top: 4rem to match the
existing height: calc(100% - 4rem).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

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Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>