Refactor HabitColorPicker to use HABIT_COLOR_CHOICES, update styles and tests

- Replaced HABIT_PALETTES with HABIT_COLOR_CHOICES in HabitColorPicker component and related tests.
- Adjusted the layout and styles of the color picker for improved usability.
- Updated tests to reflect changes in color selection logic.
- Modified WorkspacePanel and SettingRow components to allow optional eyebrow and description props.
- Enhanced accessibility tests for calendar navigation.
- Updated calendar model to include a 1-month view option.
- Refined styles across various components for consistency and improved responsiveness.

src/components/ArchivedHabits.tsx

@@ -56,7 +56,7 @@ export function ArchivedHabits({ date, revision, onChanged, onExpired, onClose }
       setDeleteError(message); if (message.includes("session has expired")) expired.current();
     } finally { saving.current = false; setBusy(false); }
   }
-  return <WorkspacePanel id="archived-habits" eyebrow="SAVED FOR LATER" title="Archived habits" description="Earlier progress stays here. Restore a habit whenever you’re ready." onClose={onClose} busy={busy} closeLabel="Close archive">
+  return <WorkspacePanel id="archived-habits" title="Archived habits" onClose={onClose} busy={busy} closeLabel="Close archive">
     <div ref={archiveFocus} tabIndex={-1} aria-label="Archive status"><FormMessage>{notice}</FormMessage></div>
     <FormMessage error>{error}</FormMessage>
     {error && <Button variant="secondary" onClick={() => setAttempt(value => value + 1)}>Retry archive</Button>}