refactor: Phase 1 code cleanup - constants, logging, and repository organization

dashcaddy-installer/jest.config.js

@@ -0,0 +1,18 @@
+module.exports = {
+  testEnvironment: 'node',
+  testMatch: ['**/*.test.js'],
+  collectCoverageFrom: [
+    'src/**/*.js',
+    '!src/renderer/**/*.js', // Exclude renderer for now
+    '!**/node_modules/**'
+  ],
+  coverageThreshold: {
+    global: {
+      branches: 80,
+      functions: 80,
+      lines: 80,
+      statements: 80
+    }
+  },
+  setupFilesAfterEnv: ['<rootDir>/jest.setup.js']
+};