diff --git a/CHANGELOG.md b/CHANGELOG.md
index dfca5b35b3..3edc833ca9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,9 @@
 ### 🐛 Bug Fixes
 
 - **fix(mitm):** Compile MITM utilities as NodeNext ESM during prepublish, copy the CommonJS MITM server into the standalone artifact, and resolve MITM data paths without relying on Next.js aliases in packaged runtime.
+- **fix(build):** Move the local `.tmp/wine32` Wine prefix out of the isolated Next.js build path so Windows Electron packaging artifacts cannot trigger `EACCES` scans during Node 24 builds.
+- **fix(api):** Validate the Codex Responses websocket bridge and `/v1/batches` JSON payloads with Zod before use, keeping `request.json()` route validation green and returning explicit 400 responses for invalid bodies.
+- **fix(ui):** Keep the upstream proxy provider detail page labeled with a fallback "Managed via Upstream Proxy Settings" management surface when translations are unavailable.
 - **fix(electron):** Harden the production desktop CSP by removing `unsafe-eval` outside development and adding object, base URI, form action, frame ancestor, and worker restrictions.
 - **fix(cli):** Replace shell-interpolated setup and privileged command execution paths with argument-based `spawn`/`execFile` helpers for database setup, Tailscale sudo commands, MITM DNS edits, and certificate install/uninstall flows.
 - **fix(ui):** Keep provider icons resilient by using direct `@lobehub/icons` components first, then local PNG/SVG fallbacks, avoiding the `@lobehub/ui` peer runtime in the dashboard.
diff --git a/scripts/build-next-isolated.mjs b/scripts/build-next-isolated.mjs
index f811076364..1d8d591013 100644
--- a/scripts/build-next-isolated.mjs
+++ b/scripts/build-next-isolated.mjs
@@ -23,6 +23,11 @@ export function getTransientBuildPaths(rootDir = projectRoot, env = process.env)
       sourcePath: path.join(rootDir, "app"),
       backupPath: path.join(backupRoot, "app"),
     },
+    {
+      label: "local Wine prefix",
+      sourcePath: path.join(rootDir, ".tmp", "wine32"),
+      backupPath: path.join(backupRoot, "wine32"),
+    },
   ];
 
   if (env.OMNIROUTE_BUILD_MOVE_TASKS === "1") {
diff --git a/src/app/(dashboard)/dashboard/providers/[id]/page.tsx b/src/app/(dashboard)/dashboard/providers/[id]/page.tsx
index 37b3e4218d..b0effebe32 100644
--- a/src/app/(dashboard)/dashboard/providers/[id]/page.tsx
+++ b/src/app/(dashboard)/dashboard/providers/[id]/page.tsx
@@ -3042,8 +3042,20 @@ export default function ProviderDetailPage() {
         <Card>
           <div className="flex flex-col gap-3">
             <div>
-              <h2 className="text-lg font-semibold">{t("upstreamProxyManagedTitle")}</h2>
-              <p className="text-sm text-text-muted mt-1">{t("upstreamProxyManagedDescription")}</p>
+              <h2 className="text-lg font-semibold">
+                {providerText(
+                  t,
+                  "upstreamProxyManagedTitle",
+                  "Managed via Upstream Proxy Settings"
+                )}
+              </h2>
+              <p className="text-sm text-text-muted mt-1">
+                {providerText(
+                  t,
+                  "upstreamProxyManagedDescription",
+                  "CLIProxyAPI is configured as an upstream proxy layer, not as a direct provider connection. Manage the binary/runtime in CLI Tools and enable proxy routing on each provider via the provider proxy controls."
+                )}
+              </p>
             </div>
             <div className="flex flex-wrap gap-2">
               <Link
diff --git a/src/app/api/internal/codex-responses-ws/route.ts b/src/app/api/internal/codex-responses-ws/route.ts
index a85014c67b..235dc58b9a 100644
--- a/src/app/api/internal/codex-responses-ws/route.ts
+++ b/src/app/api/internal/codex-responses-ws/route.ts
@@ -1,4 +1,5 @@
 import { NextResponse } from "next/server";
+import { z } from "zod";
 import { CodexExecutor } from "@omniroute/open-sse/executors/codex.ts";
 import { getApiKeyMetadata } from "@/lib/db/apiKeys";
 import { authorizeWebSocketHandshake, extractWsTokenFromRequest } from "@/lib/ws/handshake";
@@ -11,6 +12,15 @@ const executor = new CodexExecutor();
 
 type JsonRecord = Record<string, unknown>;
 
+const bridgePayloadSchema = z
+  .object({
+    action: z.string().optional(),
+    requestUrl: z.string().optional(),
+    headers: z.record(z.string(), z.unknown()).optional(),
+    response: z.record(z.string(), z.unknown()).optional(),
+  })
+  .passthrough();
+
 function isRecord(value: unknown): value is JsonRecord {
   return typeof value === "object" && value !== null && !Array.isArray(value);
 }
@@ -168,7 +178,11 @@ export async function POST(request: Request) {
   let body: JsonRecord;
   try {
     const parsed = await request.json();
-    body = isRecord(parsed) ? parsed : {};
+    const validation = bridgePayloadSchema.safeParse(parsed);
+    if (!validation.success) {
+      return jsonError(400, "invalid_json", "Request body must be a JSON object");
+    }
+    body = validation.data;
   } catch {
     return jsonError(400, "invalid_json", "Request body must be JSON");
   }
diff --git a/src/app/api/v1/batches/route.ts b/src/app/api/v1/batches/route.ts
index 39d24b619d..5882b5d7c6 100644
--- a/src/app/api/v1/batches/route.ts
+++ b/src/app/api/v1/batches/route.ts
@@ -46,7 +46,19 @@ export async function POST(request: Request) {
 
   try {
     const body = await request.json();
-    const validated = v1BatchCreateSchema.parse(body);
+    const validation = v1BatchCreateSchema.safeParse(body);
+    if (!validation.success) {
+      return NextResponse.json(
+        {
+          error: {
+            message: validation.error.message,
+            type: "invalid_request_error",
+          },
+        },
+        { status: 400, headers: CORS_HEADERS }
+      );
+    }
+    const validated = validation.data;
 
     const inputFile = getFile(validated.input_file_id);
     if (!inputFile || (inputFile.apiKeyId !== null && inputFile.apiKeyId !== apiKeyId)) {
diff --git a/tests/unit/build-next-isolated.test.ts b/tests/unit/build-next-isolated.test.ts
index 64f22ede3e..2cbd2350ab 100644
--- a/tests/unit/build-next-isolated.test.ts
+++ b/tests/unit/build-next-isolated.test.ts
@@ -108,7 +108,7 @@ test("getTransientBuildPaths leaves _tasks in place by default", () => {
 
   assert.deepEqual(
     paths.map((entry) => entry.label),
-    ["legacy app snapshot"]
+    ["legacy app snapshot", "local Wine prefix"]
   );
   assert.equal(
     paths.some((entry) => entry.sourcePath === "/repo/_tasks"),