Switch to JSON store so Electron runs without native sqlite rebuild.

Auto-seeds 10 presets on first launch; visual designer with palette, drag, resize, and bricks CRUD.

Co-authored-by: Cursor <cursoragent@cursor.com>

package.json

@@ -21,14 +21,12 @@
   "dependencies": {
     "@dnd-kit/core": "^6.3.1",
     "@dnd-kit/utilities": "^3.2.2",
-    "better-sqlite3": "^11.10.0",
     "react": "^19.2.5",
     "react-dom": "^19.2.5",
     "reactflow": "^11.11.4"
   },
   "devDependencies": {
     "@playwright/test": "^1.62.0",
-    "@types/better-sqlite3": "^7.6.13",
     "@types/node": "^25.6.0",
     "@types/react": "^19.2.14",
     "@types/react-dom": "^19.2.3",
@@ -60,19 +58,47 @@
     "asar": true,
     "mac": {
       "target": [
-        { "target": "dmg", "arch": ["x64", "arm64"] },
-        { "target": "zip", "arch": ["x64", "arm64"] }
+        {
+          "target": "dmg",
+          "arch": [
+            "x64",
+            "arm64"
+          ]
+        },
+        {
+          "target": "zip",
+          "arch": [
+            "x64",
+            "arm64"
+          ]
+        }
       ]
     },
     "win": {
       "target": [
-        { "target": "nsis", "arch": ["x64"] },
-        { "target": "zip", "arch": ["x64"] }
+        {
+          "target": "nsis",
+          "arch": [
+            "x64"
+          ]
+        },
+        {
+          "target": "zip",
+          "arch": [
+            "x64"
+          ]
+        }
       ]
     },
     "linux": {
       "target": [
-        { "target": "AppImage", "arch": ["x64", "arm64"] }
+        {
+          "target": "AppImage",
+          "arch": [
+            "x64",
+            "arm64"
+          ]
+        }
       ],
       "category": "Game"
     },