Build a macro set for one topic

Build a small set of canned replies for {{topic}}.

It usually splits into: {{variants}}

One reply per variant, each standing alone — no "as mentioned in my previous
message". Mark where the agent must add something specific with square brackets so a
reply cannot be sent as-is when it needs a detail.

Then say what would tell an agent which variant they are looking at.

What to fill in

{{topic}}

The topic — e.g. sync not working

{{variants}}

How it usually splits — e.g. not signed in; not Pro; genuinely broken