feat(flr): make FLR session lifecycle visible and reapable (#3)

src/zerto_rewind_mcp/client.py

@@ -231,6 +231,10 @@ class ZertoClient:
             status_code=last.status_code if last else None,
         )
 
+    async def list_flrs(self) -> Any:
+        """GET /v1/flrs. Every FLR session the ZVM currently knows about."""
+        return await self.json("GET", "/v1/flrs")
+
     async def end_flr(self, session_id: str) -> None:
         try:
             await self.json("DELETE", f"/v1/flrs/{session_id}")