Fix DB crash

.gitignore

@@ -7,5 +7,6 @@ __pycache__/
 **/__pycache__/
 frontend/.svelte-kit/generated/
 frontend/.svelte-kit/output/
+backend/data/stats.db
 real/backend/data/stats.db
 real/

backend/game/engine.py

@@ -1403,6 +1403,7 @@ class GameEngine:
         return ActionResult(
             action_type="build", success=True,
             data={"built": built, "building": bt.value},
+            sound_events=[{"kind": "move_ack", "unit_type": "scv"}],
         )
 
     def _cmd_train(self, player: PlayerState, action: GameAction) -> ActionResult:

frontend/src/lib/components/Map.svelte

@@ -873,7 +873,7 @@
        per-cell rects, works in all environments (no SVG mask url(#id) needed).
        Computed reactively via $: fogRects so viewport panning is always in sync. -->
   {#each fogRects as r}
-    <rect x={r.x} y={r.y} width={r.w + 0.02} height={1.02} fill="rgba(0,0,0,{r.opacity})" pointer-events="none" shape-rendering="crispEdges" />
+    <rect x={r.x} y={r.y} width={r.w} height={1} fill="rgba(0,0,0,{r.opacity})" pointer-events="none" shape-rendering="crispEdges" />
   {/each}
 
   <!-- Tutorial target beacon (rendered above fog so it's always visible) -->