Clean up Business Central vendor records before the next payment run

**Objective:** Audit vendor records and list the ones that break the rules below.

Pass `{company}` as the company argument on every call. If `{company}` is empty, leave the company argument out so the connector's default company is used.

**Step 1: Vendors**

Call `business-central-get-vendor` with max-records 1000. Say if the result hits the limit.

**Step 2: Rules**

* Missing payment-terms-code or payment-method-code
* Missing email and phone-number
* Missing country-code
* Blocked (blocked not blank) with a balance still owed
* Possible duplicates: same name, same email, or same phone-number
* Negative balance (the company is owed money)

**Step 3: Activity**

For vendors flagged as possible duplicates, call `business-central-get-posted-purchase-invoice` with buy-from-vendor-number and posting-date.from one year ago to show which record is actually used.

**Step 4: Report**

A count per rule and a table per rule: vendor number, name, the failing values. For duplicate groups, say which record has the recent activity.

**Rules & Guidelines:**

* This prompt is read-only. Do not call any tool named business-central-create-* or business-central-update-*, in particular not `business-central-update-vendor`.

**Validation:**

* If no vendor breaks a rule, say so.