Fix examples select collapsing on touch next to Run

[holgerd77]

Summary

• On touch, useful Run tooltips render as inline copy. That caption sat in the same grid as the examples select and stole the row (Pixel 6a / 8038: chevron-only pill).
• Inline hints now wrap to the button width (w-0 min-w-full); ActionButton host is flex min-w-0 instead of inline-flex. Examples column has a 10rem minimum.
• Same chrome on 7708, 8037, and 7928. Bytecode Runs stay decorative; 7594 examples are already on their own row.

Test plan

• 8038 on a real phone (or DevTools with hover disabled): example title visible beside Run; hint wraps under the button
• 7708 / 8037 / 7928 same check
• Desktop with mouse: tooltip on hover, layout unchanged

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