feat(core): add Electron runtime, services, and app composition

src/config/definitions/defaults-immersion.ts

@@ -0,0 +1,20 @@
+import { ResolvedConfig } from '../../types';
+
+export const IMMERSION_DEFAULT_CONFIG: Pick<ResolvedConfig, 'immersionTracking'> = {
+  immersionTracking: {
+    enabled: true,
+    dbPath: '',
+    batchSize: 25,
+    flushIntervalMs: 500,
+    queueCap: 1000,
+    payloadCapBytes: 256,
+    maintenanceIntervalMs: 24 * 60 * 60 * 1000,
+    retention: {
+      eventsDays: 7,
+      telemetryDays: 30,
+      dailyRollupsDays: 365,
+      monthlyRollupsDays: 5 * 365,
+      vacuumIntervalDays: 7,
+    },
+  },
+};