fix: harden v2 custom widgets and Workshop (#6480)

packages/api/src/env.ts

@@ -1,16 +1,34 @@
 import { z } from "zod/v4";
 
 import { createBooleanSchema, createEnv } from "@homarr/core/infrastructure/env";
+import { normalizeHttpUrl } from "@homarr/workshop/schema";
+
+const publicHttpUrl = (variableName: string) =>
+  z.string().transform((value, context) => {
+    try {
+      return normalizeHttpUrl(value, variableName);
+    } catch (error) {
+      context.addIssue({
+        code: "custom",
+        message: error instanceof Error ? error.message : `${variableName} is invalid`,
+      });
+      return z.NEVER;
+    }
+  });
 
 export const env = createEnv({
   server: {
     KUBERNETES_SERVICE_ACCOUNT_NAME: z.string().optional(),
     DEMO_MODE: createBooleanSchema(false),
     DEMO_READ_ONLY: createBooleanSchema(true),
+    HOMARR_WEBSITE_URL: publicHttpUrl("HOMARR_WEBSITE_URL").default("https://homarr.dev"),
+    WORKSHOP_API_URL: publicHttpUrl("WORKSHOP_API_URL").optional(),
   },
   runtimeEnv: {
     KUBERNETES_SERVICE_ACCOUNT_NAME: process.env.KUBERNETES_SERVICE_ACCOUNT_NAME,
     DEMO_MODE: process.env.DEMO_MODE,
     DEMO_READ_ONLY: process.env.DEMO_READ_ONLY,
+    HOMARR_WEBSITE_URL: process.env.HOMARR_WEBSITE_URL,
+    WORKSHOP_API_URL: process.env.WORKSHOP_API_URL,
   },
 });