refactor(sandbox): normalize main session aliases

src/agents/sandbox.resolveSandboxContext.test.ts

@@ -71,4 +71,50 @@ describe("resolveSandboxContext", () => {
 
     vi.doUnmock("node:child_process");
   }, 15_000);
+
+  it("treats main session aliases as main in non-main mode", async () => {
+    vi.resetModules();
+
+    const spawn = vi.fn(() => {
+      throw new Error("spawn should not be called");
+    });
+    vi.doMock("node:child_process", async (importOriginal) => {
+      const actual =
+        await importOriginal<typeof import("node:child_process")>();
+      return { ...actual, spawn };
+    });
+
+    const { ensureSandboxWorkspaceForSession, resolveSandboxContext } =
+      await import("./sandbox.js");
+
+    const cfg: ClawdbotConfig = {
+      session: { mainKey: "work" },
+      agents: {
+        defaults: {
+          sandbox: { mode: "non-main", scope: "session" },
+        },
+        list: [{ id: "main" }],
+      },
+    };
+
+    expect(
+      await resolveSandboxContext({
+        config: cfg,
+        sessionKey: "main",
+        workspaceDir: "/tmp/clawdbot-test",
+      }),
+    ).toBeNull();
+
+    expect(
+      await ensureSandboxWorkspaceForSession({
+        config: cfg,
+        sessionKey: "work",
+        workspaceDir: "/tmp/clawdbot-test",
+      }),
+    ).toBeNull();
+
+    expect(spawn).not.toHaveBeenCalled();
+
+    vi.doUnmock("node:child_process");
+  }, 15_000);
 });