af send --wake to start sleeping workspace

[waleedkadous]

Feature Request

Currently af send messages are silently dropped if the architect session for the target project isn't running. This is frustrating when builders complete work overnight or while the architect is disconnected.

Proposed Behavior

af send --wake should:

1. Detect that the target workspace's architect session is not running
2. Start the workspace (equivalent to af dash start for that project)
3. Wait for the architect session to be ready
4. Deliver the message

Without --wake (current behavior)

Message is dropped with an error/warning that the architect isn't running.

Considerations

• Should --wake be the default, or opt-in?
• Cross-workspace targeting (af send workspace:architect "msg") should also support --wake
• What if Tower itself isn't running? (Probably just error — don't auto-start Tower)
• Rate limiting to prevent a crash loop of wake → crash → wake