test(server): align specs with run environment and step schema

- update scenario tests to create runs with required environmentId
- adjust browser controller expectations to session auto-create behavior
- sync playwright/context mocks with current browser service usage

server/test/browser.controller.spec.ts

@@ -8,8 +8,8 @@ import { Repository } from "typeorm";
 /**
  * Browser controller integration tests.
  *
- * POST /open and POST /exec need a running Playwright browser.  We test
- * validation rejections (no browser launched) and session-not-found paths,
+ * POST /open and POST /exec need a running Playwright browser. We test
+ * validation rejections and auto-create behavior for unknown named sessions,
  * which are safe to run in a headless CI environment.
  */
 describe("BrowserController", () => {
@@ -54,11 +54,16 @@ describe("BrowserController", () => {
         .expect(400);
     });
 
-    it("returns 404 when session does not exist", async () => {
-      await request(app.getHttpServer())
+    it("auto-creates missing named session and succeeds", async () => {
+      const res = await request(app.getHttpServer())
         .post("/open")
         .send({ sessionName: "no-such-session", url: "https://example.com" })
-        .expect(404);
+        .expect(201);
+      expect(res.body).toMatchObject({
+        url: expect.any(String),
+        title: expect.any(String),
+        content: expect.any(String),
+      });
     });
 
     it("succeeds without a session (sessionless open)", async () => {
@@ -115,11 +120,12 @@ describe("BrowserController", () => {
         .expect(400);
     });
 
-    it("returns 404 when session does not exist", async () => {
-      await request(app.getHttpServer())
+    it("auto-creates missing named session and succeeds", async () => {
+      const res = await request(app.getHttpServer())
         .post("/exec")
         .send({ sessionName: "no-such-session", code: "return 1;" })
-        .expect(404);
+        .expect(201);
+      expect(res.body).toEqual({ result: 1 });
     });
 
     it("succeeds without a session (sessionless exec)", async () => {