refactor startup flow and remove legacy error handling (#14)

package-lock.json

@@ -8,9 +8,6 @@
       "name": "scoreko-electron-dev",
       "version": "0.2.0",
       "license": "MIT",
-      "dependencies": {
-        "source-map-support": "^0.5.21"
-      },
       "devDependencies": {
         "@electron/rebuild": "^3.7.1",
         "@types/node": "^22.10.5",
@@ -1495,6 +1492,7 @@
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/buffer-from/-/buffer-from-1.1.2.tgz",
       "integrity": "sha512-E+XQCRwSbaaiChtv6k6Dwgc+bx+Bs6vuKJHHl5kox/BaKbhiXzqQOwK4cO22yElGp2OCmjwVhT3HmxgyPGnJfQ==",
+      "dev": true,
       "license": "MIT"
     },
     "node_modules/builder-util": {
@@ -5092,6 +5090,7 @@
       "version": "0.6.1",
       "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
       "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
+      "dev": true,
       "license": "BSD-3-Clause",
       "engines": {
         "node": ">=0.10.0"
@@ -5101,6 +5100,7 @@
       "version": "0.5.21",
       "resolved": "https://registry.npmjs.org/source-map-support/-/source-map-support-0.5.21.tgz",
       "integrity": "sha512-uBHU3L3czsIyYXKX88fdrGovxdSCoTGDRZ6SYXtSRxLZUzHg5P/66Ht6uoUlHu9EZod+inXhKo3qQgwXUT/y1w==",
+      "dev": true,
       "license": "MIT",
       "dependencies": {
         "buffer-from": "^1.0.0",