feat: module interaction system with wiring panel

Add a new "module" interaction type where doors/devices define ports
(in/out) and a JS verify function. Players wire their gadget's I/O
to the module's ports via a canvas-rendered wiring panel, then execute
to verify the circuit logic.

- New wiringPanel.js: full wiring UI with keyboard nav, bezier wires,
  mini circuit evaluator, and verify execution
- AND-gate example door in Circuit Lab (tile 9,1)
- Editor support: module type with ports editor and JS verify textarea
- Integrated into gameMode, worldInput, worldRenderer

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

js/world/worldRenderer.js

@@ -7,6 +7,7 @@ import { worldState } from './worldState.js';
 import { getMap, getInteraction, getNPC, getExit, isWall } from './maps.js';
 import { updateMovement } from './worldInput.js';
 import { drawBackpack, getGadgets, drawNamingScreen, drawNotification } from './inventory.js';
+import { isWiringOpen, drawWiringPanel } from './wiringPanel.js';
 
 let canvas = null;
 let ctx = null;
@@ -145,7 +146,12 @@ export function renderWorld(timestamp) {
         drawBackpack(ctx, canvas.width, canvas.height);
     }
 
-    // === Layer 7: Naming screen (on top of everything including backpack) ===
+    // === Layer 7: Wiring panel overlay ===
+    if (isWiringOpen()) {
+        drawWiringPanel(ctx, canvas.width, canvas.height);
+    }
+
+    // === Layer 8: Naming screen (on top of everything) ===
     drawNamingScreen(ctx, canvas.width, canvas.height);
 
     // === Layer 8: Notification toast ===