Follow-up sequences

Attach a multi-step follow-up sequence to any campaign. Each step fires automatically at the configured delay after a connection accepts.

Use a built-in template: `crispy campaign templates` `crispy campaign apply-template my-campaign warm-intro`

Or set a custom sequence: `crispy campaign update my-campaign --follow-up-sequence '[{"type":"text","content":"Hey {first_name}!","delay_seconds":0},{"type":"text","content":"Quick follow-up...","delay_seconds":86400}]'`

Supported step types: `text`, `voice_note` (URL), `image` (URL), `video` (URL). Template variables: `{first_name}`, `{last_name}`, `{name}`, `{company}`.