Get what customers said on Chorus calls onto their Zendesk tickets

**Objective:** Add what was said about Zendesk ticket `{ticket-id}` on Chorus conversation `{conversation-id}` to the ticket as a private internal note.

**Step 1: Read both sides**

Call `zendesk-get-ticket` with ticket-id set to `{ticket-id}` for subject, status, requester-email and organization-name. Call `chorus-get-engagements` with conversation-id set to `{conversation-id}` for date, subject, user-name, account-name and meeting-summary. If either returns nothing, say which and stop.

**Step 2: Check they belong together**

Call `chorus-get-conversation-participants` with conversation-id set to `{conversation-id}`. They belong together if the ticket's requester-email is a participant (compare case-insensitively), or if the account-name and organization-name clearly name the same company. If neither holds, say so and ask me to confirm before going on.

**Step 3: Draft and confirm**

Draft a note for support agents: a heading line "From Chorus call on <date> with <user-name>", then only the points in the meeting-summary that bear on the ticket's subject, as short bullets, and any commitment made to the customer on the call. Leave out unrelated sales topics. Show the draft and wait for my explicit confirmation.

**Step 4: Write and confirm**

Call `zendesk-add-ticket-comment` once, with ticket-id `{ticket-id}`, body set to the note and public set to false. Then call `zendesk-get-ticket-comment` with ticket-id `{ticket-id}` and public false and confirm the note is there and is not public.

**Rules & Guidelines:**

* `zendesk-get-ticket`, `zendesk-add-ticket-comment` and `zendesk-get-ticket-comment` are on the zendesk server. `chorus-get-engagements` and `chorus-get-conversation-participants` are on the chorus server.
* `zendesk-add-ticket-comment` is the only write, called once, after confirmation, always with public false. A public comment would email the customer.
* Do NOT call `zendesk-update-ticket`, `zendesk-make-ticket-comment-private` or any chorus add, update or export tool.

**Validation:**

* If the meeting-summary does not mention anything related to the ticket, say so and do not write a note.
* If the ticket is closed, say that closed tickets cannot take new comments and stop.