Promote AgentCompany-New to the repository root and retire the old app

The legacy application - its src, tests, landing site, promo assets, docs,
release tooling, CI workflows, and root configs - leaves the tree; it stays
reachable in history. Everything under AgentCompany-New moves up unchanged:
same package name, so the production userData/database path is untouched,
and e2e/build scripts already resolved paths relative to the project. The
developer cred.txt stays gitignored at its new location. Full verify:ci
passes from the new root.

vitest.config.ts

@@ -1,19 +1,8 @@
-import { resolve } from "node:path";
 import { defineConfig } from "vitest/config";
 
 export default defineConfig({
-  resolve: {
-    alias: {
-      "@shared": resolve("src/shared"),
-      "@main": resolve("src/main"),
-      "@renderer": resolve("src/renderer"),
-      "@preload": resolve("src/preload"),
-    },
-  },
   test: {
     environment: "node",
-    include: ["tests/**/*.{spec,test}.ts"],
-    exclude: ["tests/e2e/**"],
-    restoreMocks: true,
+    include: ["tests/{unit,contract,integration,eval}/**/*.test.ts"],
   },
 });