✨ add Nisse info panel with work log (Issue #9)

Clicking a Nisse opens a top-left panel showing name, AI status,
energy bar, active job, job priority buttons, and a live work log
(last 10 of 20 runtime-only entries). Closes via ESC, ✕, or clicking
another Nisse. Dynamic parts (status/energy/job/log) refresh each
frame without rebuilding the full group.

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

src/scenes/GameScene.ts

@@ -61,7 +61,8 @@ export class GameScene extends Phaser.Scene {
     this.farmingSystem.onToolChange = (tool, label) => this.events.emit('farmToolChanged', tool, label)
 
     this.villagerSystem.create()
-    this.villagerSystem.onMessage = (msg) => this.events.emit('toast', msg)
+    this.villagerSystem.onMessage    = (msg) => this.events.emit('toast', msg)
+    this.villagerSystem.onNisseClick = (id)  => this.events.emit('nisseClicked', id)
 
     this.debugSystem.create()