diff --git a/open-sse/services/accountFallback.ts b/open-sse/services/accountFallback.ts
index 69e069efde..140317964a 100644
--- a/open-sse/services/accountFallback.ts
+++ b/open-sse/services/accountFallback.ts
@@ -29,7 +29,7 @@ import {
 } from "../../src/shared/utils/classify429";
 import { resolveUseUpstream429BreakerHints } from "../../src/shared/utils/providerHints";
 
-type ProviderProfile = {
+export type ProviderProfile = {
   baseCooldownMs: number;
   useUpstreamRetryHints: boolean;
   /** Issue #2100 follow-up. Stored override; undefined → per-provider default. */
diff --git a/open-sse/services/reasoningCache.ts b/open-sse/services/reasoningCache.ts
index 7bdabbf6da..fee766ec65 100644
--- a/open-sse/services/reasoningCache.ts
+++ b/open-sse/services/reasoningCache.ts
@@ -45,7 +45,8 @@ const REASONING_REPLAY_MODEL_PATTERNS = [
   /deepseek-r1/i,
   /deepseek-reasoner/i,
   /deepseek-chat/i,
-  /deepseek[-/]v4[-.](flash|pro)/i,
+  /deepseek[-/]v4[-.](flash|pro)(-free)?/i,
+  /zen\/deepseek-v4/i,
   /kimi-k2/i,
   /qwq/i,
   /qwen.*think/i,
diff --git a/src/lib/versionManager/binaryManager.ts b/src/lib/versionManager/binaryManager.ts
index 1b4b86c6de..2a2d0bf709 100644
--- a/src/lib/versionManager/binaryManager.ts
+++ b/src/lib/versionManager/binaryManager.ts
@@ -162,6 +162,7 @@ export async function getInstalledVersions(dataDir?: string): Promise<string[]>
     return entries
       .filter(
         (e) =>
+          typeof e === "string" &&
           e.startsWith("cliproxyapi-") &&
           fsSync.statSync(path.join(/* turbopackIgnore: true */ binDir, e)).isDirectory()
       )