Usage view now gives recommendations and a one-key fix

The usage view and the get_usage request now return recommendations instead of fixed hints for each category. Each recommendation has a percentage, a title and a detail line.

There can also be a fix: a ready-made message that Claude Code sends for you when you press the key bound to settings:fixUsage. The fix is worked out from your current settings, such as your effort level and whether changing it costs anything. Other changes:

• With Remote Control on, the fix is not sent and the view says "Nothing was sent. Turn off Remote Control to use fixes."
• In some remote cases the get_usage reply leaves out the fix and the recommendations.
• The note under the breakdown now says the shares overlap, replacing the old wording that called them independent characteristics.