Fix clipped content on BMS segment-detail cards at ~1028px width

Bug

On the BMS segment-detail page (/bms/segment/N) at window widths around 1000-1100px, two cards clip their content instead of shrinking it:

• Segment At A Glance: the "Chip CRCs" caption under the Alpha/Beta CRC dots is cut off by the card's bottom-right boundary.
• Chip Alpha/Beta Diagnostics: the VAnalog value in the third column bleeds past the card's right edge and gets truncated (e.g. "4.83" with the V unit cut off).

Both render fine at 1920px.

Steps to reproduce

1. Open /bms/segment/1 with live data.
2. Set the window to ~1028px wide.
3. Compare the At A Glance card's bottom-right corner and the Diagnostics cards' third column against a full-width window.

Expected

Card contents scale, wrap, or truncate with ellipsis inside the card boundary.

Notes

Observed 2026-07-15 while screenshotting #712 at default Playwright viewport (1028px effective); pre-existing on develop, unrelated to the Open Wire change.