Matrix: wire startup migration into doctor and gateway

extensions/matrix/runtime-api.ts

@@ -1,3 +1,14 @@
 export * from "openclaw/plugin-sdk/matrix";
 export * from "./src/auth-precedence.js";
-export * from "./helper-api.js";
+export {
+  findMatrixAccountEntry,
+  hashMatrixAccessToken,
+  listMatrixEnvAccountIds,
+  resolveConfiguredMatrixAccountIds,
+  resolveMatrixChannelConfig,
+  resolveMatrixCredentialsFilename,
+  resolveMatrixEnvAccountToken,
+  resolveMatrixHomeserverKey,
+  resolveMatrixLegacyFlatStoreRoot,
+  sanitizeMatrixPathSegment,
+} from "./helper-api.js";