fix(web): increase tooltip z-index to overlay popovers and menus

[naMqe-h]

What Changed

Increased the TooltipPositioner z-index from z-50 to z-70 in apps/web/src/components/ui/tooltip.tsx.

Why

Tooltips rendered inside popovers or dropdown menus (such as the "Add to favorites" star button inside model list items) were being clipped and rendered behind the popover container.

This occurred because PopoverPositioner (apps/web/src/components/ui/popover.tsx) and MenuPositioner (apps/web/src/components/ui/menu.tsx) use z-[60], whereas TooltipPositioner was set to z-50. Since both elements render via React Portals as siblings at the document root, the lower z-index caused tooltips to render underneath popover surfaces.

Updating TooltipPositioner to z-70 ensures tooltips always correctly overlay popovers and menus.

UI Changes

Before:

After:

Checklist

• This PR is small and focused
• I explained what changed and why
• I included before/after screenshots for any UI changes
• I included a video for animation/interaction changes

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Note

Low Risk
Single CSS stacking-order tweak in the shared tooltip component; no auth, data, or behavioral logic changes.

Overview
Raises TooltipPositioner stacking from z-50 to z-70 so portal-rendered tooltips sit above popovers and menus (which use z-[60]), fixing clipping when tooltips appear inside those surfaces (e.g. favorite actions in model lists).

^{Reviewed by Cursor Bugbot for commit c332573. Bugbot is set up for automated code reviews on this repo. Configure here.}

Note

Increase tooltip z-index to overlay popovers and menus

Updates the TooltipPopup positioner in tooltip.tsx from z-50 to z-70 so tooltips render above popovers and menus.

^{Macroscope summarized c332573.}

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[macroscopeapp]

Approvability

Verdict: Approved c332573

Single-line CSS z-index change (50 → 70) to fix tooltip layering over popovers/menus. Purely visual adjustment with no runtime logic impact.

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