AP payment priority queue

# AP queue — priority payments

## Purpose
Generate a prioritized payment list across 3 urgency levels: overdue invoices (pay now), invoices due within 7 days (pay this week), and invoices due within 30 days (plan ahead). Lets the AP Manager manage their payment queue efficiently.

## Instructions

### Step 1 — Overdue invoices (CRITICAL PRIORITY)
```
Call spendesk_get_due_invoices (with no supplierIds filter → all due invoices).
Result: invoices whose due date has passed.
For each invoice: note id, supplierId, amount, currency, dueDate, daysOverdue.
Sort by amount descending (pay the largest overdue amounts first).
```

### Step 2 — Invoices due within 7 days (HIGH PRIORITY)
```
Call get_payables with:
  - paymentStatus: unpaid / toPay
  - dueDate: between today and today + 7 days
Sort by dueDate ascending (most urgent first), then by amount descending.
```

### Step 3 — Invoices due 8-30 days out (PLANNING)
```
Call get_payables with:
  - paymentStatus: unpaid / toPay
  - dueDate: between today + 8 days and today + 30 days
Sort by dueDate ascending.
```

### Step 4 — Resolve supplier names
```
Extract the unique supplierIds from the 3 buckets.
For the top 20 suppliers by amount: call get_supplier_by_id for each.
Substitute the IDs with names in the final list.
```

### Step 5 — Queue presentation
```
🔴 PAY NOW (X invoices | X€) — overdue
  Supplier | Amount | Days overdue | Invoice number

🟡 PAY THIS WEEK (X invoices | X€) — due < 7 days
  Supplier | Amount | Due date | Days remaining

🟢 PLAN AHEAD (X invoices | X€) — due 8-30 days
  Supplier | Amount | Due date

Total to disburse within 30 days: X€
```

## Points to watch
- Invoices with no dueDate set do not appear in spendesk_get_due_invoices — track them separately via get_payables
- Payment itself happens in Spendesk — this skill does not trigger a wire transfer
- Validate the list with the treasurer before launching payments

## Example prompts
- "Which invoices should I pay first today?"
- "Show me my AP queue for the week"
- "How much do I need to disburse in the next 30 days?"