fix(memory): keep FTS-only sync offline

scripts/check-memory-fd-repro.mjs

@@ -28,6 +28,7 @@ const DEFAULT_FILE_COUNT = 512;
 const DEFAULT_MAX_WORKSPACE_REG_FDS = process.platform === "darwin" ? 8 : 64;
 export const GATEWAY_READY_OUTPUT_MAX_CHARS = 128 * 1024;
 export const MEMORY_SEARCH_RESPONSE_MAX_BYTES = 256 * 1024;
+export const MEMORY_SEARCH_PROBE_QUERY = "Top-level memory file";
 
 const SKIP_GATEWAY_ENV = {
   NODE_ENV: "test",
@@ -277,15 +278,22 @@ function writeSyntheticWorkspace(workspaceDir, fileCount) {
   }
 }
 
-function writeConfig({ homeDir, workspaceDir, port, token }) {
+export function writeConfig({ homeDir, workspaceDir, port, token }) {
   const configDir = path.join(homeDir, ".openclaw");
   fs.mkdirSync(configDir, { recursive: true });
   const configPath = path.join(configDir, "openclaw.json");
+  const indexPath = path.join(configDir, "memory", "main.sqlite");
   const config = {
     agents: {
       defaults: {
         workspace: workspaceDir,
         memorySearch: {
+          provider: "none",
+          model: "",
+          store: {
+            path: indexPath,
+            vector: { enabled: false },
+          },
           sync: {
             watch: true,
             onSessionStart: false,
@@ -313,6 +321,37 @@ function writeConfig({ homeDir, workspaceDir, port, token }) {
   return configPath;
 }
 
+function formatTail(text, maxChars = 4096) {
+  return text.length > maxChars ? text.slice(-maxChars) : text;
+}
+
+function preindexSyntheticMemory(env) {
+  logStep("preindex start");
+  const result = spawnSync(
+    process.execPath,
+    ["scripts/run-node.mjs", "memory", "index", "--force", "--agent", "main"],
+    {
+      cwd: process.cwd(),
+      encoding: "utf8",
+      env,
+      maxBuffer: 10 * 1024 * 1024,
+      stdio: ["ignore", "pipe", "pipe"],
+    },
+  );
+  if (result.status !== 0) {
+    throw new Error(
+      [
+        `memory preindex failed with exit ${result.status ?? result.signal}`,
+        formatTail(result.stdout || ""),
+        formatTail(result.stderr || ""),
+      ]
+        .filter(Boolean)
+        .join("\n"),
+    );
+  }
+  logStep("preindex complete");
+}
+
 export function updateGatewayReadyOutputState(
   state,
   chunk,
@@ -591,7 +630,7 @@ async function invokeMemorySearch({ port, token, timeoutMs }) {
       body: JSON.stringify({
         tool: "memory_search",
         args: {
-          query: "FD-leak-probe-sentinel-xyzzy-nomatch",
+          query: MEMORY_SEARCH_PROBE_QUERY,
           maxResults: 1,
           corpus: "memory",
         },
@@ -673,6 +712,7 @@ async function main() {
     OPENCLAW_CONFIG_PATH: configPath,
     OPENCLAW_GATEWAY_TOKEN: token,
   };
+  preindexSyntheticMemory(env);
   const child = spawn(
     process.execPath,
     [