Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

- Add cv link template (https://cv.morganwill.com) with icon
- Add preset aliases: biz, social, msg — auto-enable QR mode
- /biz redirects to /?biz&qr which expands to the preset link set
- Presets also work as query params: /?biz or /?biz.ig
- Regenerate QR codes to include cv

- Dark mode: transition background-color, color, and fill across theme change
- ThemeToggle: crossfade sun/moon icons with rotation instead of show/hide
- QR mode: fade transition on title and QR grid when switching modes
- Standardize transition durations to 0.3s

- svelte 5.46→5.53, @sveltejs/kit 2.49→2.53
- adapter-cloudflare 4.9→7.2 (Workers Static Assets)
- Move _redirects from static/ to project root (adapter 6.0 breaking change)
- Remove Pages-only adapter options (pages, assets, fallback, precompress, strict, routes)
- Bump wrangler compatibility_date to 2025-03-01

Use goto() + preloadData() instead of pushState so the server load
re-runs and provides QR SVG data. QR data is prefetched in the
background on mount so the toggle feels instant.