diff --git a/docs/refactor/database-first.md b/docs/refactor/database-first.md
index 4144b26be3b..a7c2c5e6689 100644
--- a/docs/refactor/database-first.md
+++ b/docs/refactor/database-first.md
@@ -304,6 +304,9 @@ The remaining cleanup is mostly consolidation and deletion:
   `.openclaw-wiki/log.jsonl`. The Memory Wiki migration provider imports old
   JSONL logs; wiki markdown and user vault content stay file-backed as
   workspace content.
+- Memory Wiki no longer creates `.openclaw-wiki/state.json` or the unused
+  `.openclaw-wiki/locks` directory. The migration provider removes those retired
+  plugin metadata files if an older vault still has them.
 - Crestodian audit entries now use core SQLite plugin state instead of
   `audit/crestodian.jsonl`. Doctor imports the legacy JSONL audit log and
   removes it after successful import.
@@ -1082,6 +1085,8 @@ Add a repo check that fails new runtime writes to legacy state paths:
 - `crestodian/rescue-pending/*.json`
 - `plugins/phone-control/armed.json`
 - Memory Wiki `.openclaw-wiki/log.jsonl`
+- Memory Wiki `.openclaw-wiki/state.json`
+- Memory Wiki `.openclaw-wiki/locks/`
 - Memory Wiki `.openclaw-wiki/source-sync.json`
 - Memory Wiki `.openclaw-wiki/import-runs/*.json`
 - Memory Wiki `.openclaw-wiki/cache/agent-digest.json`
diff --git a/extensions/memory-wiki/src/source-sync-migration.test.ts b/extensions/memory-wiki/src/source-sync-migration.test.ts
new file mode 100644
index 00000000000..7eb3f46a9ca
--- /dev/null
+++ b/extensions/memory-wiki/src/source-sync-migration.test.ts
@@ -0,0 +1,72 @@
+import fs from "node:fs/promises";
+import os from "node:os";
+import path from "node:path";
+import type { MigrationProviderContext } from "openclaw/plugin-sdk/migration";
+import { afterEach, describe, expect, it } from "vitest";
+import type { ResolvedMemoryWikiConfig } from "./config.js";
+import { createMemoryWikiSourceSyncMigrationProvider } from "./source-sync-migration.js";
+
+const tempDirs: string[] = [];
+
+async function createVaultRoot(): Promise<string> {
+  const root = await fs.mkdtemp(path.join(os.tmpdir(), "memory-wiki-migration-"));
+  tempDirs.push(root);
+  return root;
+}
+
+function createConfig(vaultRoot: string): ResolvedMemoryWikiConfig {
+  return {
+    vaultMode: "isolated",
+    vault: { path: vaultRoot, renderMode: "native" },
+    obsidian: { enabled: false, useOfficialCli: false, openAfterWrites: false },
+    bridge: {
+      enabled: false,
+      readMemoryArtifacts: false,
+      indexDreamReports: false,
+      indexDailyNotes: false,
+      indexMemoryRoot: false,
+      followMemoryEvents: false,
+    },
+    unsafeLocal: { allowPrivateMemoryCoreAccess: false, paths: [] },
+    ingest: { autoCompile: false, maxConcurrentJobs: 1, allowUrlIngest: false },
+    search: { backend: "shared", corpus: "wiki" },
+    context: { includeCompiledDigestPrompt: false },
+    render: { preserveHumanBlocks: true, createBacklinks: true, createDashboards: true },
+  };
+}
+
+afterEach(async () => {
+  await Promise.all(tempDirs.splice(0).map((dir) => fs.rm(dir, { recursive: true, force: true })));
+});
+
+describe("memory wiki source sync migration", () => {
+  it("removes retired vault metadata files during doctor migration", async () => {
+    const vaultRoot = await createVaultRoot();
+    const metadataDir = path.join(vaultRoot, ".openclaw-wiki");
+    const locksDir = path.join(metadataDir, "locks");
+    await fs.mkdir(locksDir, { recursive: true });
+    await fs.writeFile(path.join(metadataDir, "state.json"), '{"version":1}\n', "utf8");
+    await fs.writeFile(path.join(locksDir, "stale.lock"), "stale", "utf8");
+
+    const provider = createMemoryWikiSourceSyncMigrationProvider(createConfig(vaultRoot));
+    await expect(provider.detect()).resolves.toMatchObject({
+      found: true,
+      confidence: "high",
+    });
+    const plan = await provider.plan({} as MigrationProviderContext);
+
+    expect(plan.items.map((item) => item.id)).toContain("memory-wiki-vault-metadata-json");
+
+    const result = await provider.apply({} as MigrationProviderContext, plan);
+    const item = result.items.find((item) => item.id === "memory-wiki-vault-metadata-json");
+
+    expect(item).toMatchObject({
+      status: "migrated",
+      details: { removedStateFile: true, removedLocksDir: true },
+    });
+    await expect(fs.stat(path.join(metadataDir, "state.json"))).rejects.toMatchObject({
+      code: "ENOENT",
+    });
+    await expect(fs.stat(locksDir)).rejects.toMatchObject({ code: "ENOENT" });
+  });
+});
diff --git a/extensions/memory-wiki/src/source-sync-migration.ts b/extensions/memory-wiki/src/source-sync-migration.ts
index 24db3c3d46c..f2e6d9b994d 100644
--- a/extensions/memory-wiki/src/source-sync-migration.ts
+++ b/extensions/memory-wiki/src/source-sync-migration.ts
@@ -16,6 +16,14 @@ import {
 
 const PROVIDER_ID = "memory-wiki-source-sync";
 
+function resolveLegacyVaultStatePath(vaultRoot: string): string {
+  return path.join(vaultRoot, ".openclaw-wiki", "state.json");
+}
+
+function resolveLegacyVaultLocksDir(vaultRoot: string): string {
+  return path.join(vaultRoot, ".openclaw-wiki", "locks");
+}
+
 async function legacySourceExists(vaultRoot: string): Promise<boolean> {
   const sourcePath = resolveMemoryWikiLegacySourceSyncStatePath(vaultRoot);
   return await fs
@@ -31,6 +39,45 @@ async function legacyLogExists(vaultRoot: string): Promise<boolean> {
     .catch(() => false);
 }
 
+async function legacyVaultMetadataExists(vaultRoot: string): Promise<boolean> {
+  const [hasStateFile, hasLocksDir] = await Promise.all([
+    fs
+      .stat(resolveLegacyVaultStatePath(vaultRoot))
+      .then((stat) => stat.isFile())
+      .catch(() => false),
+    fs
+      .stat(resolveLegacyVaultLocksDir(vaultRoot))
+      .then((stat) => stat.isDirectory())
+      .catch(() => false),
+  ]);
+  return hasStateFile || hasLocksDir;
+}
+
+async function removeLegacyVaultMetadata(vaultRoot: string): Promise<{
+  removedStateFile: boolean;
+  removedLocksDir: boolean;
+}> {
+  const statePath = resolveLegacyVaultStatePath(vaultRoot);
+  const locksDir = resolveLegacyVaultLocksDir(vaultRoot);
+  const [hadStateFile, hadLocksDir] = await Promise.all([
+    fs
+      .stat(statePath)
+      .then((stat) => stat.isFile())
+      .catch(() => false),
+    fs
+      .stat(locksDir)
+      .then((stat) => stat.isDirectory())
+      .catch(() => false),
+  ]);
+  if (hadStateFile) {
+    await fs.rm(statePath, { force: true });
+  }
+  if (hadLocksDir) {
+    await fs.rm(locksDir, { recursive: true, force: true });
+  }
+  return { removedStateFile: hadStateFile, removedLocksDir: hadLocksDir };
+}
+
 function resolveLegacyImportRunsDir(vaultRoot: string): string {
   return path.join(vaultRoot, ".openclaw-wiki", "import-runs");
 }
@@ -88,8 +135,21 @@ export function createMemoryWikiSourceSyncMigrationProvider(
     const hasSourceSync = await legacySourceExists(config.vault.path);
     const hasLegacyLog = await legacyLogExists(config.vault.path);
     const hasLegacyDigests = await legacyMemoryWikiDigestFilesExist(config.vault.path);
+    const hasLegacyVaultMetadata = await legacyVaultMetadataExists(config.vault.path);
     const importRunFiles = await listLegacyImportRunJsonFiles(config.vault.path);
     const items = [
+      ...(hasLegacyVaultMetadata
+        ? [
+            createMigrationItem({
+              id: "memory-wiki-vault-metadata-json",
+              kind: "state",
+              action: "archive",
+              source: path.join(config.vault.path, ".openclaw-wiki"),
+              target: "none; Memory Wiki vault metadata is derived from config and SQLite state",
+              message: "Remove retired Memory Wiki vault state.json and locks directory.",
+            }),
+          ]
+        : []),
       ...(hasSourceSync
         ? [
             createMigrationItem({
@@ -157,6 +217,7 @@ export function createMemoryWikiSourceSyncMigrationProvider(
       const found =
         (await legacySourceExists(config.vault.path)) ||
         (await legacyLogExists(config.vault.path)) ||
+        (await legacyVaultMetadataExists(config.vault.path)) ||
         (await legacyMemoryWikiDigestFilesExist(config.vault.path)) ||
         (await listLegacyImportRunJsonFiles(config.vault.path)).length > 0;
       return {
@@ -180,7 +241,14 @@ export function createMemoryWikiSourceSyncMigrationProvider(
           continue;
         }
         try {
-          if (item.id === "memory-wiki-source-sync-json") {
+          if (item.id === "memory-wiki-vault-metadata-json") {
+            const result = await removeLegacyVaultMetadata(config.vault.path);
+            items[itemIndex] = {
+              ...item,
+              status: "migrated",
+              details: result,
+            };
+          } else if (item.id === "memory-wiki-source-sync-json") {
             const result = await importMemoryWikiLegacySourceSyncState({
               vaultRoot: config.vault.path,
             });
diff --git a/extensions/memory-wiki/src/vault.test.ts b/extensions/memory-wiki/src/vault.test.ts
index 7029a622d74..75711b0a7e5 100644
--- a/extensions/memory-wiki/src/vault.test.ts
+++ b/extensions/memory-wiki/src/vault.test.ts
@@ -34,9 +34,12 @@ 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.stat(path.join(rootDir, ".openclaw-wiki", "state.json"))).rejects.toMatchObject(
+      { code: "ENOENT" },
+    );
+    await expect(fs.stat(path.join(rootDir, ".openclaw-wiki", "locks"))).rejects.toMatchObject({
+      code: "ENOENT",
+    });
   });
 
   it("is idempotent when the vault already exists", async () => {
diff --git a/extensions/memory-wiki/src/vault.ts b/extensions/memory-wiki/src/vault.ts
index ec2afbb6f6c..3076adefc5c 100644
--- a/extensions/memory-wiki/src/vault.ts
+++ b/extensions/memory-wiki/src/vault.ts
@@ -17,7 +17,6 @@ export const WIKI_VAULT_DIRECTORIES = [
   "_attachments",
   "_views",
   ".openclaw-wiki",
-  ".openclaw-wiki/locks",
 ] as const;
 
 type InitializeMemoryWikiVaultResult = {
@@ -120,22 +119,6 @@ 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: new Date(options?.nowMs ?? Date.now()).toISOString(),
-          renderMode: config.vault.renderMode,
-        },
-        null,
-        2,
-      ),
-    ),
-    createdFiles,
-  );
   if (createdDirectories.length > 0 || createdFiles.length > 0) {
     await appendMemoryWikiLog(rootDir, {
       type: "init",
diff --git a/scripts/check-database-first-legacy-stores.mjs b/scripts/check-database-first-legacy-stores.mjs
index 8c0a990e1e4..79ed4cf63a1 100644
--- a/scripts/check-database-first-legacy-stores.mjs
+++ b/scripts/check-database-first-legacy-stores.mjs
@@ -73,6 +73,8 @@ const legacyStoreMarkers = [
   },
   { label: "Memory Wiki source sync JSON", pattern: /\bsource-sync\.json\b/u },
   { label: "Memory Wiki activity JSONL", pattern: /\b\.openclaw-wiki[/\\]log\.jsonl\b/u },
+  { label: "Memory Wiki vault metadata JSON", pattern: /\b\.openclaw-wiki[/\\]state\.json\b/u },
+  { label: "Memory Wiki vault lock directory", pattern: /\b\.openclaw-wiki[/\\]locks\b/u },
   {
     label: "Memory Wiki import run JSON",
     pattern: /\bimport-runs[/\\][A-Za-z0-9._-]+\.json\b/u,