jank reduction & flow fix pass, after all of the last month's changes

src/dbg_engine/dbg_engine_core.c

@@ -1661,6 +1661,7 @@ d_tick(Arena *arena, D_TargetArray *targets, D_BreakpointArray *breakpoints, D_P
             switch(event->cause)
             {
               default:{}break;
+              case CTRL_EventCause_InterruptedByHalt:{cause = D_EventCause_Halt;}break;
               case CTRL_EventCause_UserBreakpoint:{cause = D_EventCause_UserBreakpoint;}break;
             }
             D_EventNode *n = push_array(arena, D_EventNode, 1);

src/dbg_engine/dbg_engine_core.h

@@ -71,6 +71,7 @@ typedef enum D_EventCause
 {
   D_EventCause_Null,
   D_EventCause_UserBreakpoint,
+  D_EventCause_Halt,
   D_EventCause_COUNT
 }
 D_EventCause;