Density was applied to every fine-pointer device with no way out, which
M3 forbids outright: "don't apply density by default; offer an explicit
density opt-in instead, keeping opt-out targets at >= 48x48 CSS px". A
row is now 52px and `dense` is a prop that tightens it to 36. The row
divider also takes outline-variant itself rather than 60% of it, since M3
keeps opacity for state layers and disabled.
Plan step 20, findings IN-16 and IN-30.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Qwx5USif3wFFmxtHg5U1g9
