perf: eliminate redundant API calls on startup (#1067)

Co-authored-by: cpacker <packercharles@gmail.com>
Co-authored-by: Letta <noreply@letta.com>

src/agent/memoryFilesystem.ts

@@ -222,6 +222,26 @@ export async function applyMemfsFlags(
   if (isEnabled && (memfsFlag || shouldAutoEnableFromTag)) {
     const { detachMemoryTools } = await import("../tools/toolset");
     await detachMemoryTools(agentId);
+
+    // Migration (LET-7353): Remove legacy skills/loaded_skills blocks.
+    // These blocks are no longer used — skills are now injected via system reminders.
+    const { getClient } = await import("./client");
+    const client = await getClient();
+    for (const label of ["skills", "loaded_skills"]) {
+      try {
+        const block = await client.agents.blocks.retrieve(label, {
+          agent_id: agentId,
+        });
+        if (block) {
+          await client.agents.blocks.detach(block.id, {
+            agent_id: agentId,
+          });
+          await client.blocks.delete(block.id);
+        }
+      } catch {
+        // Block doesn't exist or already removed, skip
+      }
+    }
   }
 
   // Keep server-side state aligned with explicit disable.
@@ -235,7 +255,10 @@ export async function applyMemfsFlags(
   if (isEnabled) {
     const { addGitMemoryTag, isGitRepo, cloneMemoryRepo, pullMemory } =
       await import("./memoryGit");
-    await addGitMemoryTag(agentId);
+    await addGitMemoryTag(
+      agentId,
+      options?.agentTags ? { tags: options.agentTags } : undefined,
+    );
     if (!isGitRepo(agentId)) {
       await cloneMemoryRepo(agentId);
     } else if (options?.pullOnExistingRepo) {