fix: Inconsistent gap between tool tabs on marketplace agent detail

[Roshan931]

Fixes #28

Root cause

Tool chips on marketplace agent detail can shrink and wrap, breaking uniform gaps

Changes

• Made the tool chips non-shrinking and non-wrapping (flex-shrink-0 + whitespace-nowrap, matching the existing badge/.btn chip pattern in the same file) and pinned the wrapping container to items-start so wrapped rows are not cross-axis stretched. The gap-2 spacing is now uniform at every viewport width.