fix: preserve zod v4 configuration behavior

Author: carderne

AGENTS.md

@@ -108,7 +108,7 @@ When modifying only server components (`apps/webapp/`, `apps/supervisor/`, etc.)
 
 ## Dependency Pinning
 
-Zod is pinned to a single version across the entire monorepo (currently `3.25.76`). When adding zod to a new or existing package, use the **exact same version** as the rest of the repo - never a different version or a range. Mismatched zod versions cause runtime type incompatibilities (e.g., schemas from one package can't be used as body validators in another).
+Zod is pinned to a single version across the entire monorepo (currently `4.4.3`). When adding zod to a new or existing package, use the **exact same version** as the rest of the repo - never a different version or a range. Mismatched zod versions cause runtime type incompatibilities (e.g., schemas from one package can't be used as body validators in another).
 
 ## Architecture Overview
 

apps/webapp/app/routes/_app.orgs.$organizationSlug.projects.$projectParam.env.$envParam.environment-variables.new/route.tsx

@@ -247,12 +247,14 @@ export default function Page() {
   const [selectedEnvironmentIds, setSelectedEnvironmentIds] = useState<Set<string>>(new Set());
   const [selectedBranchId, setSelectedBranchId] = useState<string | undefined>(undefined);
 
-  const branchEnvironments = environments.filter((env) => env.branchName);
-  const nonBranchEnvironments = environments.filter((env) => !env.branchName);
-  const selectedEnvironments = environments.filter((env) => selectedEnvironmentIds.has(env.id));
-  const previewIsSelected = selectedEnvironments.some(
-    (env) => env.branchName !== null || env.type === "PREVIEW"
+  // TODO: we only support branch-specific env vars for Preview environments.
+  // This keeps setting consistent env vars across Dev/Staging/Prod easier.
+  const branchEnvironments = environments.filter(
+    (env) => env.type === "PREVIEW" && env.parentEnvironmentId !== null
   );
+  const nonBranchEnvironments = environments.filter((env) => env.parentEnvironmentId === null);
+  const selectedEnvironments = environments.filter((env) => selectedEnvironmentIds.has(env.id));
+  const previewIsSelected = selectedEnvironments.some((env) => env.type === "PREVIEW");
 
   const isLoading = navigation.state !== "idle" && navigation.formMethod === "post";
 

apps/webapp/app/services/platform.v3.server.ts

@@ -242,7 +242,7 @@ const MachineOverrideValues = z.object({
 });
 type MachineOverrideValues = z.infer<typeof MachineOverrideValues>;
 
-const MachineOverrides = z.record(MachinePresetName, MachineOverrideValues.partial());
+const MachineOverrides = z.partialRecord(MachinePresetName, MachineOverrideValues.partial());
 type MachineOverrides = z.infer<typeof MachineOverrides>;
 
 const MachinePresetOverrides = z.object({

internal-packages/dashboard-agent/package.json

@@ -14,7 +14,7 @@
     "@internal/dashboard-agent-db": "workspace:*",
     "@trigger.dev/sdk": "workspace:*",
     "ai": "^6.0.116",
-    "zod": "3.25.76"
+    "zod": "4.4.3"
   },
   "devDependencies": {
     "@ai-sdk/provider": "3.0.8",