test: raise timeouts on git-spawning tower and cold-fork tests

These three tests spawn real git processes and finish in about 3s idle, but
exceed the 5s default under a loaded or slower CI runner.

Author: elkaix

packages/agent-core-v2/test/features/tower/store.test.ts

@@ -680,7 +680,7 @@ describe('merge gate', () => {
     await store.merge(consumer.branch);
     const state = await store.load();
     expect(state.missions.find((m) => m.id === consumer.id)?.status).toBe('merged');
-  });
+  }, 30_000);
 
   it('refuses files outside the mission scope until the tower widens it', async () => {
     const mission = await setupMission({
@@ -744,7 +744,7 @@ describe('merge gate', () => {
     expect(conflictsWith).toEqual([
       { branch: second.branch, files: ['src/a/shared.ts'] },
     ]);
-  });
+  }, 30_000);
 
   it('closes a zero-diff survey with a noop merge — no review, no git ceremony', async () => {
     const [mission] = await store.plan([

packages/agent-gateway/test/sessions.test.ts

@@ -1055,7 +1055,7 @@ describe('server-v2 /api/v1/sessions', () => {
     const resumed = await resumeSessionById((server as RunningServer).core.accessor, forkedId);
     expect(resumed).toBeDefined();
     expect(resumed!.accessor.get(IAgentLifecycleService).handleOf(MAIN_AGENT_ID)).toBeDefined();
-  });
+  }, 30_000);
 
   it('keeps cron tasks across a server restart through the wire', async () => {
     const cwd = home as string;