See a client's balance and email engagement together

**Objective:** Build a single profile for the client with email `{client-email}`, combining what they owe and have paid in FreshBooks with how they are engaged in Drip. Look back `{lookback-days}` days for payments (default 365).

**Step 1: Find the client in FreshBooks**

Call `freshbooks-get-client` (FreshBooks server) with `email` set to `{client-email}`. If it returns more than one client, list them and stop. If none, say the client is not in FreshBooks and continue with Step 3 only.

**Step 2: Read the billing position**

Take the client `id` and call `freshbooks-get-invoice` with it as `customer-id` for open invoices (use `outstanding.min` of 0.01), and `freshbooks-get-payment` with it as `client-id` and `date.from` set to the lookback start. Total the outstanding amount and the payments received.

**Step 3: Find the subscriber in Drip**

Call `drip-get-subscriber` (Drip server) with `email` set to `{client-email}`. Then call `drip-get-campaign-subscriber` with the same `email` to list the campaigns they are in.

**Step 4: Report**

Show: client name and organization, outstanding balance and oldest due date, payments in the period, Drip status, tags, lead score, lifetime value, and each campaign with its status. Finish with a short note on anything that stands out, for example an unsubscribed contact who has paid recently, or an active campaign running against an overdue balance.

**Rules & Guidelines:**

* FreshBooks tools are `freshbooks-get-client`, `freshbooks-get-invoice` and `freshbooks-get-payment`. Drip tools are `drip-get-subscriber` and `drip-get-campaign-subscriber`.
* Read-only. Do not call `freshbooks-update-client`, `freshbooks-add-payment`, `drip-update-subscriber`, `drip-add-subscriber-tag`, `drip-unsubscribe-subscriber` or any other write tool.
* Both servers take a `company` parameter; pass the company the user is authorized for on every call, and never mix companies.

**Validation:**

* If the client is in one system and not the other, report that plainly rather than leaving the section blank.
* Currencies may differ between systems. Show amounts in the currency the system returned and do not convert.