fix(plugins): widen extension-api source alias candidates

src/plugins/sdk-alias.test.ts

@@ -103,9 +103,13 @@ function createPluginSdkAliasFixture(params?: {
   return { root, srcFile, distFile };
 }
 
-function createExtensionApiAliasFixture(params?: { srcBody?: string; distBody?: string }) {
+function createExtensionApiAliasFixture(params?: {
+  srcBody?: string;
+  distBody?: string;
+  srcExtension?: ".ts" | ".mts" | ".js" | ".mjs" | ".cts" | ".cjs";
+}) {
   const root = makeTempDir();
-  const srcFile = path.join(root, "src", "extensionAPI.ts");
+  const srcFile = path.join(root, "src", `extensionAPI${params?.srcExtension ?? ".ts"}`);
   const distFile = path.join(root, "dist", "extensionAPI.js");
   mkdirSafeDir(path.dirname(srcFile));
   mkdirSafeDir(path.dirname(distFile));
@@ -441,6 +445,16 @@ describe("plugin sdk alias helpers", () => {
     });
   });
 
+  it("resolves source extension-api aliases through the wider source extension family", () => {
+    const fixture = createExtensionApiAliasFixture({ srcExtension: ".mts" });
+    expectExtensionApiAliasResolution({
+      fixture,
+      modulePath: (root: string) => path.join(root, "src", "plugins", "loader.ts"),
+      env: { NODE_ENV: undefined },
+      expected: "src",
+    });
+  });
+
   it.each([
     {
       name: "prefers dist candidates first for production src runtime",

src/plugins/sdk-alias.ts

@@ -252,6 +252,14 @@ export function resolvePluginSdkAliasFile(params: {
 const cachedPluginSdkExportedSubpaths = new Map<string, string[]>();
 const cachedPluginSdkScopedAliasMaps = new Map<string, Record<string, string>>();
 const PLUGIN_SDK_PACKAGE_NAMES = ["openclaw/plugin-sdk", "@openclaw/plugin-sdk"] as const;
+const EXTENSION_API_SOURCE_CANDIDATE_EXTENSIONS = [
+  ".ts",
+  ".mts",
+  ".js",
+  ".mjs",
+  ".cts",
+  ".cjs",
+] as const;
 
 export function listPluginSdkExportedSubpaths(
   params: {
@@ -344,14 +352,19 @@ export function resolveExtensionApiAlias(params: LoaderModuleResolveParams = {})
       isProduction: process.env.NODE_ENV === "production",
       pluginSdkResolution: params.pluginSdkResolution,
     });
-    const candidateMap = {
-      src: path.join(packageRoot, "src", "extensionAPI.ts"),
-      dist: path.join(packageRoot, "dist", "extensionAPI.js"),
-    } as const;
     for (const kind of orderedKinds) {
-      const candidate = candidateMap[kind];
-      if (fs.existsSync(candidate)) {
-        return candidate;
+      if (kind === "dist") {
+        const candidate = path.join(packageRoot, "dist", "extensionAPI.js");
+        if (fs.existsSync(candidate)) {
+          return candidate;
+        }
+        continue;
+      }
+      for (const ext of EXTENSION_API_SOURCE_CANDIDATE_EXTENSIONS) {
+        const candidate = path.join(packageRoot, "src", `extensionAPI${ext}`);
+        if (fs.existsSync(candidate)) {
+          return candidate;
+        }
       }
     }
   } catch {