chore(deadcode): drop retired memory wiki vault metadata

extensions/memory-wiki/src/vault.test.ts

@@ -35,9 +35,12 @@ describe("initializeMemoryWikiVault", () => {
     await expect(fs.readFile(path.join(rootDir, "WIKI.md"), "utf8")).resolves.toContain(
       "Render mode: `obsidian`",
     );
-    await expect(
-      fs.readFile(path.join(rootDir, ".openclaw-wiki", "state.json"), "utf8"),
-    ).resolves.toContain('"renderMode": "obsidian"');
+    await expect(fs.access(path.join(rootDir, ".openclaw-wiki", "state.json"))).rejects.toThrow(
+      /ENOENT/,
+    );
+    await expect(fs.access(path.join(rootDir, ".openclaw-wiki", "locks"))).rejects.toThrow(
+      /ENOENT/,
+    );
   });
 
   it("is idempotent when the vault already exists", async () => {

extensions/memory-wiki/src/vault.ts

@@ -20,7 +20,6 @@ export const WIKI_VAULT_DIRECTORIES = [
   "_attachments",
   "_views",
   ".openclaw-wiki",
-  ".openclaw-wiki/locks",
   ".openclaw-wiki/cache",
 ] as const;
 
@@ -125,22 +124,6 @@ export async function initializeMemoryWikiVault(
     withTrailingNewline("# Inbox\n\nDrop raw ideas, questions, and source links here.\n"),
     createdFiles,
   );
-  await writeFileIfMissing(
-    rootDir,
-    ".openclaw-wiki/state.json",
-    withTrailingNewline(
-      JSON.stringify(
-        {
-          version: 1,
-          createdAt: resolveMemoryWikiTimestamp(options?.nowMs),
-          renderMode: config.vault.renderMode,
-        },
-        null,
-        2,
-      ),
-    ),
-    createdFiles,
-  );
   await writeFileIfMissing(rootDir, ".openclaw-wiki/log.jsonl", "", createdFiles);
 
   if (createdDirectories.length > 0 || createdFiles.length > 0) {