Expose `agent-merge` as a slash command and allow the session to init as agen...

Expose `agent-merge` as a slash command and allow the session to init as agent merge

---
| Field | Value |
| --- | --- |
| App version | 1.1.2 |
| OS | Windows 10.0.26200 |
| Theme | GitHub |
| Path | /chat |
| Tenure | Day 1 |

Start at the /chat entry point and search the app for the existing agent-merge handling and slash-command registration. Confirm how session initialization selects an agent, then verify that agent-merge is exposed as a slash command and that a session can initialize as agent merge.

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