equalFlowControl: mirror the optimalControl dispatch reorder

The priority-control codepath had the same stale dispatch shape that
caused the live deadlock in optimalControl: only handling idle and
operational states, and chaining flowmovement after execsequence
startup. Aligns it with the optimalControl fix so a future mode switch
to prioritycontrol doesn't reintroduce the bug.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/specificClass.js

@@ -1121,16 +1121,18 @@ class MachineGroup {
                 this.logger.debug(this.machines[machineId].state);
                 const currentState = this.machines[machineId].state.getCurrentState();
 
-                if (flow <= 0 && (currentState === "operational" || currentState === "accelerating" || currentState === "decelerating")) {
+                // Same dispatch shape as optimalControl — see the comment
+                // there for the rationale. flowmovement BEFORE startup so
+                // concurrent retargets can update delayedMove without a
+                // stale chained flowmovement overwriting it after startup.
+                if (flow > 0) {
+                    await machine.handleInput("parent", "flowmovement", this._canonicalToOutputFlow(flow));
+                    if (currentState === "idle") {
+                        await machine.handleInput("parent", "execsequence", "startup");
+                    }
+                } else if (currentState === "operational" || currentState === "accelerating" || currentState === "decelerating") {
                     await machine.handleInput("parent", "execsequence", "shutdown");
                 }
-                else if (currentState === "idle" && flow > 0) {
-                    await machine.handleInput("parent", "execsequence", "startup");
-                    await machine.handleInput("parent", "flowmovement", this._canonicalToOutputFlow(flow));
-                }
-                else if (currentState === "operational" && flow > 0) {
-                    await machine.handleInput("parent", "flowmovement", this._canonicalToOutputFlow(flow));
-                }
             }));
         }
         catch (err) {