fix: harden gateway recovery diagnostics and media delivery

Harden gateway recovery diagnostics and media delivery.\n\n- Accept gateway send asVoice and map it to outbound audioAsVoice.\n- Preserve generated Swift protocol models for the gateway send schema.\n- Keep the broader recovery hardening for install/update/status/vector/TTS paths in one reviewed PR.\n\nProof:\n- Focused local gateway/outbound/update/status/doctor/sqlite-vec tests passed.\n- oxfmt --check and git diff --check passed.\n- Testbox OPENCLAW_TESTBOX=1 pnpm check:changed passed at 2f5ef650e97763a61ff43c28e61707db84c50060.\n- GitHub required checks are green at the merge SHA; the qa-lab parity gate is optional/surface-only and was still pending.

packages/memory-host-sdk/src/host/sqlite-vec.test.ts

@@ -0,0 +1,25 @@
+import { describe, expect, it, vi } from "vitest";
+
+vi.mock("sqlite-vec", () => {
+  throw new Error("bundled sqlite-vec should not load when extensionPath is explicit");
+});
+
+import { loadSqliteVecExtension } from "./sqlite-vec.js";
+
+describe("loadSqliteVecExtension", () => {
+  it("loads explicit extensionPath without importing bundled sqlite-vec", async () => {
+    const db = {
+      enableLoadExtension: vi.fn(),
+      loadExtension: vi.fn(),
+    };
+
+    await expect(
+      loadSqliteVecExtension({
+        db: db as never,
+        extensionPath: "/opt/openclaw/sqlite-vec.so",
+      }),
+    ).resolves.toEqual({ ok: true, extensionPath: "/opt/openclaw/sqlite-vec.so" });
+    expect(db.enableLoadExtension).toHaveBeenCalledWith(true);
+    expect(db.loadExtension).toHaveBeenCalledWith("/opt/openclaw/sqlite-vec.so");
+  });
+});

packages/memory-host-sdk/src/host/sqlite-vec.ts

@@ -18,17 +18,16 @@ export async function loadSqliteVecExtension(params: {
   extensionPath?: string;
 }): Promise<{ ok: boolean; extensionPath?: string; error?: string }> {
   try {
-    const sqliteVec = await loadSqliteVecModule();
     const resolvedPath = normalizeOptionalString(params.extensionPath);
-    const extensionPath = resolvedPath ?? sqliteVec.getLoadablePath();
-
     params.db.enableLoadExtension(true);
     if (resolvedPath) {
-      params.db.loadExtension(extensionPath);
-    } else {
-      sqliteVec.load(params.db);
+      params.db.loadExtension(resolvedPath);
+      return { ok: true, extensionPath: resolvedPath };
     }
 
+    const sqliteVec = await loadSqliteVecModule();
+    const extensionPath = sqliteVec.getLoadablePath();
+    sqliteVec.load(params.db);
     return { ok: true, extensionPath };
   } catch (err) {
     const message = formatErrorMessage(err);