1.0.8

chore(release): 1.0.8

Patch release: two practice-window layout fixes.

- The footer no longer leaves a strip of background under it. The scroll
  container's own bottom padding was pushing the sticky bar up; the breathing
  space now lives in the bar, so it sits flush with the bottom edge. The
  practice page's navigation bar had the same defect and is fixed with it.
- The settings panel's three rows now carry symmetric padding. Obsidian's
  `.setting-item` adds an 8px bottom margin and nothing on top, which showed up
  as a lopsided gap, and its 16px padding stacked onto the panel's own.

The README screenshot generator loaded `styles.css` before `theme.css`, the
reverse of Obsidian, so its approximate `.setting-item` rule was masking the
second defect in every committed screenshot; the order is corrected and the
three practice-window screenshots regenerated.

No question-format, degrade-rule or record-key changes, and minAppVersion
stays at 1.4.0. The suite grows from 381 to 383 cases.