Server-side scenario execution: thin effects client replaces local engine

- engine/ (DagWalker, sessions, IndexedDbPlanStore) deleted; server owns the graph
- trigger/callback/counter carry PendingEffect; GET /sdk/v1/scenarios/pending polled
  (30s jittered heartbeat paused on hidden tab + wait-deadline timers)
- client.effects public API unchanged (done/buy/dismiss/end/claim/battlepass/quest)
- planStateStore removed; loginEvent kept; reconcile() makes server the source of truth
- generated models regenerated; skills/README/CHANGELOG updated

test/e2e/remoteConfig.e2e.test.ts

@@ -3,7 +3,6 @@ import { RudderClient } from '../../src/client/RudderClient.js';
 import { createFakeTokenStore } from '../helpers/FakeTokenStore.js';
 import { createFakeGateway, type FakeGateway } from '../helpers/fakeGateway.js';
 import { stubDeterministicUuid } from '../helpers/memoryPlanStore.js';
-import { plan } from '../helpers/plan.js';
 import type { RemoteConfig } from '../../src/generated/remote-config.js';
 
 interface GameRemoteConfig extends Record<string, unknown> {
@@ -25,7 +24,7 @@ function makeClient(): RudderClient<GameRemoteConfig> {
     baseUrl: 'https://api.test.rudder.build',
     projectKey: 'test-project',
     tokenStore: createFakeTokenStore(),
-    runtime: { planStateStore: null, loginEvent: null },
+    runtime: { loginEvent: null },
   });
 }
 
@@ -76,26 +75,4 @@ describe('E2E: remote config', () => {
     expect(client.remoteConfig.status).toBe('idle');
     expect(client.remoteConfig.get('max_energy', 99)).toBe(99);
   });
-
-  it('a remote_config_override scenario node patches the live cache', async () => {
-    client = new RudderClient<GameRemoteConfig>({
-      baseUrl: 'https://api.test.rudder.build',
-      projectKey: 'test-project',
-      tokenStore: createFakeTokenStore(),
-      runtime: { planStateStore: null },
-    });
-    gateway.onEvent(
-      'player_login',
-      plan('boost')
-        .node('override', 'remote_config_override', {
-          patches: [{ path: 'drop_rate', valueType: 'float', value: '0.9' }],
-        })
-        .build(),
-    );
-
-    await client.auth.loginWithDevice();
-
-    // The override is reflected immediately, without a reload.
-    expect(client.remoteConfig.get('drop_rate', 0)).toBeCloseTo(0.9);
-  });
 });