v1.13 — Fix oversized profile card + clipped button text
Two real bugs from a live screenshot, plus one rename:
- A saved profile card could render as a huge (~90px) box with Load/Delete squeezed and clipped at the bottom edge — a missing layout stretch let Qt inflate the single/last card to fill the scroll viewport instead of keeping it at its natural compact size. Cards now always render at their real size (42px), regardless of the container's height.
- Those buttons' text was genuinely clipped — an earlier fixed height (16px) was smaller than the font's own line height (24px). Replaced with proper padding so Qt sizes them correctly from real font metrics instead of a guessed number.
- Renamed Random Colours to Random Colours (WIP) — it's a hue-sweep gradient with a randomized starting point, not fully independent per-key randomness, so same-row keys on Main Board still read as an ordered band. The name shouldn't oversell it.
Verified: namcap-clean (same two known false positives), extracted-package personal-data audit clean, headless launch of the actual built package, profile card height confirmed matching its own sizeHint exactly (42px) instead of stretching.