feat(chat): surface session terminal_backend (ssh/docker) in header (#869)

Co-authored-by: M57 <hy4ri@users.noreply.github.com>

app/src/main/java/com/m57/hermescontrol/data/model/SessionListResponse.kt

@@ -22,6 +22,7 @@ data class SessionInfo(
     val parent_session_id: String? = null,
     val display_name: String? = null,
     val model: String? = null,
+    val terminal_backend: String? = null,
 )
 
 @Serializable