Understand why Capsule CRM deals were won or lost

**Objective:** Review every opportunity closed between `{from-date}` and `{to-date}` (default: the last 90 days up to today), for `{owner-name}` or everyone when blank, and explain what was won, what was lost and why.

**Step 1: Identify the closing milestones**

Call `capsule-crm-get-milestone` with complete = true. Treat the milestone with probability 100 (usually named Won) as won and the one with probability 0 (usually Lost) as lost. If the names or probabilities do not make this clear, list them and ask.

**Step 2: Pull closed deals**

Call `capsule-crm-get-opportunity` with closed-on-date.from = {from-date}, closed-on-date.to = {to-date}, owner-name = {owner-name} when given, and max-records = 500.

**Step 3: Analyse**

* Won and lost: count and total value, per currency.
* Win rate by count and by value.
* Average days from created-date to closed-on-date, separately for won and lost.
* Per owner: won count, lost count, win rate, won value.
* Lost reasons: count and value per lost-reason-name. Call `capsule-crm-get-lost-reason` to list any reason with zero losses, and count lost deals with no reason recorded.

**Step 4: Report**

1. Headline: period, deals closed, win rate, won value.
2. Owner table.
3. Lost reasons table, largest value first, with the no-reason count on its own line.
4. The five largest wins and the five largest losses: name, party, owner, value, closed date, and for losses the reason.
5. Up to three observations the numbers support, such as a reason driving most losses or lost deals closing much faster than won ones.

**Rules & Guidelines:**

* This prompt is read-only. Do not call `capsule-crm-add-note`, `capsule-crm-update-note`, `capsule-crm-add-task`, `capsule-crm-update-task`, `capsule-crm-add-opportunity`, `capsule-crm-update-opportunity`, `capsule-crm-add-case`, `capsule-crm-update-case`, `capsule-crm-add-party` or `capsule-crm-update-party`.
* Do not total across currencies.
* State the sample size next to any rate; a rate from fewer than five deals is not a trend, so say so.

**Validation:**

* If no deals closed in the range, say so and state the range and owner filter used.
* If the read returns exactly max-records rows, say the figures are incomplete.