Fix CSFloat listing age tooltip clipping

[rodekva]

Summary

• Raise the hovered CSFloat listing card while the BetterFloat listing-age tooltip is active.
• Keep the existing hint.css tooltip placement and styling unchanged.
• Scope the stacking change to .betterfloat-listing-age inside CSFloat item cards.

Root Cause

The listing-age tooltip is rendered with an absolutely positioned hint.css pseudo-element inside the listing card. Adjacent listing cards can paint above it, clipping or covering the date tooltip when cards sit next to each other.

Validation

• Manually verified on csfloat.com that injecting the same CSS makes the full date tooltip render above adjacent listings.
• npx --yes pnpm@10.33.0 exec biome ci src/css/csfloat_styles.css passes.

Notes

• Full pnpm lint currently fails on existing unrelated repo-wide Biome issues in other files.
• Full pnpm build reaches Plasmo but fails in this public checkout because ~lib/handlers/selectors/skinout_selectors is missing from src/contents/haloskins/index.ts.

[GODrums]

Hey, can you provide some more information on how to reproduce this clipping bug?

Doesn't seem to happen for me on the latest Chrome version with BetterFloat v.3.6.0.

[rodekva]

Sure, I can reproduce it on Brave. I attached a short screen recording.

Setup:

• Browser: Brave 1.92.134, Chromium 150.0.7871.63
• BetterFloat: v3.6.0

Steps:

1. Open CSFloat stall or market with multiple listings side by side.
2. Hover the orange listing age clock on a card that has another listing directly next to it.
3. The date tooltip appears, but the adjacent listing paints clips part of it.

brave_aHRqffaLpD.mp4

After applying the PR CSS change, the same hover shows the full tooltip above the neighboring card.