feat(apps-engine): export ENGINE_VERSION from definition layer

Adds `src/definition/version.ts` which reads the package version via
`resolveJsonModule` and exports it as `ENGINE_VERSION`.

Replaces `AppPackageParser.getEngineVersion()` — which resolved the
version by traversing the filesystem relative to `__dirname` — with a
direct import of `ENGINE_VERSION`. This removes the assumption that
`package.json` lives at a predictable relative path, which will break
when `AppPackageParser` moves to a different package during the
apps-engine split.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: d-gubert

packages/apps-engine/src/definition/version.ts

@@ -0,0 +1,8 @@
+import { version } from '../../package.json';
+
+/**
+ * The version of the Apps-Engine package.
+ * Consumed by host-side code (e.g. AppPackageParser) to validate app compatibility
+ * without relying on filesystem path traversal.
+ */
+export const ENGINE_VERSION: string = version;

packages/apps-engine/src/server/compiler/AppPackageParser.ts

@@ -1,4 +1,3 @@
-import * as fs from 'fs';
 import * as path from 'path';
 
 import * as AdmZip from 'adm-zip';
@@ -7,6 +6,7 @@ import { v4 as uuidv4 } from 'uuid';
 
 import { AppImplements } from '.';
 import type { IAppInfo } from '../../definition/metadata/IAppInfo';
+import { ENGINE_VERSION } from '../../definition/version';
 import { RequiredApiVersionError } from '../errors';
 import type { IParseAppPackageResult } from './IParseAppPackageResult';
 
@@ -15,11 +15,7 @@ export class AppPackageParser {
 
 	private allowedIconExts: Array<string> = ['.png', '.jpg', '.jpeg', '.gif'];
 
-	private appsEngineVersion: string;
-
-	constructor() {
-		this.appsEngineVersion = this.getEngineVersion();
-	}
+	private appsEngineVersion: string = ENGINE_VERSION;
 
 	public async unpackageApp(appPackage: Buffer): Promise<IParseAppPackageResult> {
 		const zip = new AdmZip(appPackage);
@@ -144,20 +140,4 @@ export class AppPackageParser {
 		return `data:image/${ext.replace('.', '')};base64,${base64}`;
 	}
 
-	private getEngineVersion(): string {
-		const devLocation = path.join(__dirname, '../../../package.json');
-		const prodLocation = path.join(__dirname, '../../package.json');
-
-		let info: { version: string };
-
-		if (fs.existsSync(devLocation)) {
-			info = JSON.parse(fs.readFileSync(devLocation, 'utf8'));
-		} else if (fs.existsSync(prodLocation)) {
-			info = JSON.parse(fs.readFileSync(prodLocation, 'utf8'));
-		} else {
-			throw new Error('Could not find the Apps TypeScript Definition Package Version!');
-		}
-
-		return info.version.replace(/^[^0-9]/, '').split('-')[0];
-	}
 }

packages/apps-engine/tsconfig.json

@@ -10,6 +10,7 @@
         "emitDecoratorMetadata": true,
         "experimentalDecorators": true,
         "moduleResolution": "node",
+        "resolveJsonModule": true,
         "types": ["node"],
         "lib": ["es2017", "dom"],
         "rootDir": "./src",