fix: skip memfs git sync on self-hosted servers (temporary)

Self-hosted Letta servers lack the /v1/git/ endpoint, causing 501
errors on cloneMemoryRepo() and pullMemory() calls.

This is a temporary guard using isLettaCloud() to skip git-backed
memory sync when not connected to Letta Cloud.

TODO: Replace with a proper self-hosted server configuration option
(e.g. server capability discovery or a memfs storage backend flag)
so self-hosted users can opt into local git-backed memory without
requiring the Cloud /v1/git/ endpoint.

src/agent/memoryFilesystem.ts

@@ -348,7 +348,7 @@ export async function applyMemfsFlags(
       agentId,
       options?.agentTags ? { tags: options.agentTags } : undefined,
     );
-    if (!isGitRepo(agentId)) {
+    if (!isGitRepo(agentId) && (await isLettaCloud())) {
       await cloneMemoryRepo(agentId);
     } else if (options?.pullOnExistingRepo) {
       const result = await pullMemory(agentId);

src/cli/App.tsx

@@ -51,6 +51,7 @@ import { ISOLATED_BLOCK_LABELS } from "../agent/memory";
 import {
   ensureMemoryFilesystemDirs,
   getMemoryFilesystemRoot,
+  isLettaCloud,
 } from "../agent/memoryFilesystem";
 import {
   getStreamToolContextId,
@@ -3643,9 +3644,9 @@ export default function App({
         const { isGitRepo, cloneMemoryRepo, pullMemory } = await import(
           "../agent/memoryGit"
         );
-        if (!isGitRepo(agentId)) {
+        if (!isGitRepo(agentId) && (await isLettaCloud())) {
           await cloneMemoryRepo(agentId);
-        } else {
+        } else if (isGitRepo(agentId)) {
           await pullMemory(agentId);
         }
       } catch (err) {