[yungsamd17]

Summary

• Replaces accent-fill + dark-text hover on all accent buttons with the
  Option C treatment (red wash + accent border + bright text), keeping
  WCAG AA contrast (no dark text anywhere).
• Button SVGs now inherit the label color and are flex-aligned; .btn-fmt
  format labels no longer render in accent.
• Disabled buttons no longer flash the accent border/bg on hover.
• Convert/resize buttons no longer use the .ready accent state (only
  export/download buttons do), and image-resizer's resize button matches
  svg-to-png's convert button.
• Privacy/terms links use a new .link-secondary-permanent variant
  (grey → bright on hover, always underlined).
• Home search FAB repositioned to align with the topbar hamburger across
  breakpoints.

Touched areas

• src/styles/global.css, tool.css, tools/icon-maker.css
• src/pages/index.astro, privacy.astro, terms.astro, design.astro
• src/pages/tools/{icon-maker,image-resizer,svg-to-png}.astro
• src/components/ToolLayout.astro
• src/scripts/tools/{image-resizer,svg-to-png}.ts, lib.ts

Testing

• npx astro check (0 errors, 2 pre-existing hints)
• npm run build (12 pages, clean)
• Preview verified in browser

Built with beam-free in the OpenCode harness.

[github-actions]

✅ PR Checks passed

Typecheck (npx astro check) and production build both green.