fix upgrade of existing project

tools/installer/lib/file-manager.js

@@ -72,7 +72,7 @@ class FileManager {
     );
 
     const manifest = {
-      version: require("../package.json").version,
+      version: require("../../../package.json").version,
       installed_at: new Date().toISOString(),
       install_type: config.installType,
       agent: config.agent || null,

tools/installer/lib/installer.js

@@ -75,7 +75,7 @@ class Installer {
       state.type = "v4_existing";
       state.hasV4Manifest = true;
       state.hasBmadCore = true;
-      state.manifest = await fileManager.readManifest(bmadCorePath);
+      state.manifest = await fileManager.readManifest(installDir);
       return state;
     }