Summarize OnePageCRM sales activity for any period

**Objective:** Summarize the sales activity logged between `{from-date}` and `{to-date}` (YYYY-MM-DD), optionally for the author `{author}`.

**Step 1: Pull the activity**

Call these with the date range and, when supplied, `author` set to `{author}`:

* `onepagecrm-get-call` with `call-time.from` and `call-time.to`
* `onepagecrm-get-meeting` with `meeting-time.from` and `meeting-time.to`
* `onepagecrm-get-note` with `date.from` and `date.to`

Set `max-records` to 200 on each. If a call returns exactly 200, warn that the result may be truncated and suggest a narrower range.

**Step 2: Tally**

* Counts of calls, meetings and notes per author.
* Calls broken down by `call-result`.
* The contacts touched most often (by `contact-id`); look up the top 5 with `onepagecrm-get-contact` using `id`.

**Step 3: Report**

A headline line, a per-author table, the call-result breakdown, the top contacts, and contacts with notes but no calls or meetings, if any.

**Rules & Guidelines:**

* Read-only. Never call `onepagecrm-add-call`, `onepagecrm-add-meeting`, `onepagecrm-add-note` or any update or delete tool.

**Validation:**

* If the dates are missing or reversed, ask for corrected dates and stop.
* If nothing is logged, say so.