First, check if the user has already provided instructions about which task group(s) to implement.

**If the user HAS provided instructions:** Proceed to PHASE 2 to delegate implementation of those specified task group(s) to the **implementer** subagent.

**If the user has NOT provided instructions:**

Read `agent-os/specs/[this-spec]/tasks.md` to review the available task groups, then output the following message to the user and WAIT for their response:

```
Should we proceed with implementation of all task groups in tasks.md?

If not, then please specify which task(s) to implement.
```