🐛 keep ROCK tile type after surface rock mining

CHANGE_TILE ROCK→GRASS removed from the surface-rock harvest branch.
Empty ROCK tiles are now passable (no resource on them) but remain ROCK,
so the mine building can still be placed on harvested rock ground.

Fixes #48

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

CHANGELOG.md

@@ -8,6 +8,7 @@ Format follows [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 ## [Unreleased]
 
 ### Fixed
+- **Debug-Panel überlagert Nisse-Info-Panel** (Issue #41): F3-Debug-Panel weicht dynamisch aus — wenn das Nisse-Info-Panel offen ist, erscheint das Debug-Panel unterhalb davon statt darüber
 - **Stockpile-Overlay Transparenz** (Issue #39): `updateStaticPanelOpacity()` verwendete `setAlpha()` statt `setFillStyle()` — dadurch wurde die Opacity quadratisch statt linear angewendet; bei 100 % blieb das Panel sichtbar transparent
 - **Action Bar Transparenz** (Issue #40): Action Bar ignorierte `uiOpacity` komplett — Hintergrund war hardcoded auf 0.92; wird jetzt korrekt mit `uiOpacity` erstellt und per `updateStaticPanelOpacity()` live aktualisiert
 

src/scenes/UIScene.ts

@@ -405,7 +405,7 @@ export class UIScene extends Phaser.Scene {
   /** Creates the debug panel text object (initially hidden). */
   private createDebugPanel(): void {
     const hexAlpha = Math.round(this.uiOpacity * 255).toString(16).padStart(2, '0')
-    this.debugPanelText = this.add.text(10, 80, '', {
+    this.debugPanelText = this.add.text(10, 10, '', {
       fontSize: '12px',
       color: '#cccccc',
       backgroundColor: `#000000${hexAlpha}`,
@@ -419,9 +419,20 @@ export class UIScene extends Phaser.Scene {
   private toggleDebugPanel(): void {
     this.debugActive = !this.debugActive
     this.debugPanelText.setVisible(this.debugActive)
+    this.repositionDebugPanel()
     this.scene.get('Game').events.emit('debugToggle')
   }
 
+  /**
+   * Repositions the debug panel to avoid overlapping the Nisse info panel.
+   * When the Nisse info panel is open, the debug panel shifts below it.
+   */
+  private repositionDebugPanel(): void {
+    const NISSE_PANEL_H = 120 + 10 * 14 + 16  // matches buildNisseInfoPanel: 276px
+    const debugY = this.nisseInfoVisible ? 10 + NISSE_PANEL_H + 10 : 10
+    this.debugPanelText.setY(debugY)
+  }
+
   /**
    * Reads current debug data from DebugSystem and updates the panel text.
    * Called every frame while debug mode is active.
@@ -879,6 +890,7 @@ export class UIScene extends Phaser.Scene {
     this.nisseInfoId = villagerId
     this.nisseInfoVisible = true
     this.buildNisseInfoPanel()
+    this.repositionDebugPanel()
   }
 
   /** Closes and destroys the Nisse info panel. */
@@ -888,6 +900,7 @@ export class UIScene extends Phaser.Scene {
     this.nisseInfoId = null
     this.nisseInfoGroup.destroy(true)
     this.nisseInfoGroup = this.add.group()
+    this.repositionDebugPanel()
   }
 
   /**

src/systems/VillagerSystem.ts

@@ -296,7 +296,8 @@ export class VillagerSystem {
       const res = state.world.resources[job.targetId]
       if (res) {
         this.adapter.send({ type: 'VILLAGER_HARVEST_RESOURCE', villagerId: v.id, resourceId: job.targetId })
-        this.adapter.send({ type: 'CHANGE_TILE', tileX: res.tileX, tileY: res.tileY, tile: TileType.GRASS })
+        // ROCK tile stays ROCK after mining — empty rocky ground remains passable
+        // and valid for mine building placement.
         this.worldSystem.removeResourceTile(res.tileX, res.tileY)
         this.resourceSystem.removeResource(job.targetId)
         this.addLog(v.id, '✓ Mined rock (+2 stone)')