ui: status bar carries too many one-off chips with similar visual weight

[stultus]

Severity: medium
Location: src/lib/components/StatusBar.svelte:61-114

Settings icon, Help icon, ⌘K Commands pill, ENG/MAL chip, save-state pill all live in a 28px strip at identical contrast. There's no clear primary, no grouping, and the ENG/MAL chip looks clickable but isn't (it just reflects state).

Fix:

• Group into three zones with subtle separators:
  1. Actions: gear, help (icon buttons)
  2. Center: ⌘K palette pill
  3. Info: ENG/MAL label (no border, plain text), save state
• Either make ENG/MAL look like a label (no border) or make it actually toggle the input mode on click and document the behavior.