Expose daily/weekly usage metrics in status line JSON

Feature Request

The status line (settings.json → statusLine) receives a JSON payload with session-level metrics (context window, tokens, cost, duration). However, account-level usage data (daily/weekly usage limits shown in /config) is not included in this payload.

Current behavior

• /config shows daily and weekly usage percentages/limits
• Status line JSON only contains session-scoped data (context_window, cost, model, etc.)
• No CLI command or API to query account usage programmatically

Requested behavior

Include account-level usage fields in the status line JSON, e.g.:

{
  "account_usage": {
    "daily_used_percentage": 45,
    "daily_remaining_percentage": 55,
    "weekly_used_percentage": 30,
    "weekly_remaining_percentage": 70
  }
}

Use case

Users on Claude Max (or other plans with usage limits) want to monitor their remaining daily/weekly budget in real time via the status line, without repeatedly opening /config. The status line infrastructure already supports this — the data just needs to be added to the JSON payload.

Workaround

None currently. The only way to check is via the /config menu.