Know which overdue FreshBooks invoices to chase first

**Objective:** Find the invoices that are past due as of {as-of-date} (default: today) with money still outstanding, and rank them for collection.

**Step 1: Pull the overdue set**

If `{company}` is not empty, pass it as `company` on every call; otherwise omit `company`. Call `freshbooks-get-invoice` with `due-date.to` set to {as-of-date} (today if empty) and `outstanding.min` set to 0.01. Ignore invoices whose `display-status` shows draft or paid.

**Step 2: Rank**

* Compute days late from `due-date` to {as-of-date}.
* Group by `organization` (fall back to `customer-id`) and total `outstanding` per customer.
* Rank customers by total outstanding, then by oldest invoice.

**Step 3: Report**

A table of customer, invoices late, total outstanding, oldest days late, currency. Then bullets for the top three to chase and why. Do not mix currencies in one total; show one total per `currency-code`.

**Rules & Guidelines:**

* This prompt is read-only. Never call any `freshbooks-add-*`, `freshbooks-update-*`, `freshbooks-delete-*`, `freshbooks-mark-invoice-as-sent` or `freshbooks-send-invoice-by-email` tool.
* Only report what `freshbooks-get-invoice` returns; do not guess contact details.

**Validation:**

* If nothing is overdue, say so and stop.
* If the result hits the record limit, say the list may be truncated and suggest narrowing the date.