fix: preserve active break during session adoption (Closes #1315)

frontend/today-timer.js

@@ -126,7 +126,7 @@ function createTodayTimer({ storage, getLogin, now = () => Date.now(), onChange
       state.attention_interruption = null;
       state.search_interruption = null;
       state.detour_interruption = null;
-      state.timed_break = null;
+      if(running || validBreak(state)?.identity !== identity) state.timed_break=null;
       return write(state);
     },
     activate(identity) {