Captain now treats consecutive customer messages as one request before
it asks a question, searches the knowledge base, or suggests a solution.
It uses the full message burst to identify the customer's goal and
current state. It checks conflicting details before relying on them.
## How to test
1. Send several customer messages in a row that describe one issue. Add
a short correction in a later message.
2. Confirm Captain uses all the messages before it asks a question,
searches the knowledge base, or suggests a solution.
3. Send another message with a detail that conflicts with information
Captain already checked. Confirm Captain checks the detail again before
relying on it.
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