fix timers

desktop/kadence_desktop/api.py

@@ -87,8 +87,18 @@ class Api:
     def resume(self) -> dict:
         return self._request("POST", "/api/timer/resume", {})
 
-    def complete(self, auto_next: bool = True) -> dict:
-        return self._request("POST", "/api/timer/complete", {"auto_next": auto_next})
+    def complete(self, auto_next: bool = True, session_id: int | None = None) -> dict:
+        """`session_id` names the interval we think we are finishing.
+
+        The server ignores the call if something else is running by then, which
+        is what keeps two clients hitting zero at the same moment from eating
+        the break the first one's `auto_next` just started.
+        """
+        return self._request(
+            "POST",
+            "/api/timer/complete",
+            {"auto_next": auto_next, "session_id": session_id},
+        )
 
     def abandon(self, reason: str | None = None) -> dict:
         return self._request("POST", "/api/timer/abandon", {"reason": reason})