Fix toggle alignment using getConnectionPos for exact slot positions

Instead of manually calculating slot Y positions with a formula that
varies across LiteGraph versions, use getConnectionPos() which returns
the exact coordinates LiteGraph uses for drawing slot connectors. This
guarantees perfect alignment between toggles and their input slots.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

web/dd_image_power_selector.js

@@ -59,9 +59,10 @@ app.registerExtension({
 
         // --- Helper: get Y position for an input slot (local coords) ---
         nodeType.prototype._getSlotY = function (slotIndex) {
-            const slotHeight = LiteGraph.NODE_SLOT_HEIGHT || 20;
-            // Standard LiteGraph slot position: center of slot + 4px nudge
-            return slotHeight * (slotIndex + 0.5) + 4;
+            // Use LiteGraph's own getConnectionPos for exact slot position,
+            // then convert from graph-space to local node-space.
+            const pos = this.getConnectionPos(true, slotIndex);
+            return pos[1] - this.pos[1];
         };
 
         // --- onNodeCreated: set up dynamic slots, toggles, and buttons ---