test: fix broken PerpsMarketDetailsView tests, add AgenticService coverage

- Update 4 test assertions for new FIRST_ROW testID on compact order rows
- Add tests for registerStepHudCallback, showStep, hideStep, findFiberByTestId
- New code coverage: 93% (13/14 lines)

Author: abretonc7s

app/components/UI/Perps/Views/PerpsMarketDetailsView/PerpsMarketDetailsView.test.tsx

@@ -2791,7 +2791,7 @@ describe('PerpsMarketDetailsView', () => {
         { state: initialState },
       );
 
-      expect(getByTestId('compact-order-parent-order')).toBeOnTheScreen();
+      expect(getByTestId('perps-compact-order-row-first')).toBeOnTheScreen();
       expect(queryByTestId('compact-order-full-position-tpsl')).toBeNull();
     });
 
@@ -2859,9 +2859,7 @@ describe('PerpsMarketDetailsView', () => {
         { state: initialState },
       );
 
-      expect(
-        getByTestId('compact-order-standalone-during-loading'),
-      ).toBeOnTheScreen();
+      expect(getByTestId('perps-compact-order-row-first')).toBeOnTheScreen();
       expect(queryByTestId('compact-order-full-position-loading')).toBeNull();
     });
 
@@ -3015,9 +3013,7 @@ describe('PerpsMarketDetailsView', () => {
         { state: initialState },
       );
 
-      expect(
-        getByTestId('compact-order-parent-order-with-metadata'),
-      ).toBeOnTheScreen();
+      expect(getByTestId('perps-compact-order-row-first')).toBeOnTheScreen();
       expect(
         getByTestId('compact-order-parent-order-with-metadata-synthetic-tp'),
       ).toBeOnTheScreen();
@@ -3107,9 +3103,7 @@ describe('PerpsMarketDetailsView', () => {
       );
 
       expect(queryByTestId('compact-order-fallback-full-size')).toBeNull();
-      expect(
-        getByTestId('compact-order-fallback-standalone'),
-      ).toBeOnTheScreen();
+      expect(getByTestId('perps-compact-order-row-first')).toBeOnTheScreen();
     });
 
     it('handles empty order list', () => {

app/core/AgenticService/AgenticService.test.ts

@@ -4,6 +4,7 @@ import AgenticService, {
   walkFiberRoots,
   tryScroll,
   toAccountSummary,
+  registerStepHudCallback,
   type FiberNode,
   type ReactDevToolsHook,
 } from './AgenticService';
@@ -420,6 +421,57 @@ describe('AgenticService.install', () => {
     expect(() => bridge().switchAccount('0xfff')).toThrow('No account found');
   });
 
+  describe('showStep / hideStep', () => {
+    afterEach(() => {
+      registerStepHudCallback(null);
+    });
+
+    it('showStep calls registered HUD callback with step data', () => {
+      const callback = jest.fn();
+      registerStepHudCallback(callback);
+
+      bridge().showStep({ id: 'step-1', description: 'Navigate to market' });
+
+      expect(callback).toHaveBeenCalledWith({
+        id: 'step-1',
+        description: 'Navigate to market',
+      });
+    });
+
+    it('hideStep calls registered HUD callback with null', () => {
+      const callback = jest.fn();
+      registerStepHudCallback(callback);
+
+      bridge().hideStep();
+
+      expect(callback).toHaveBeenCalledWith(null);
+    });
+
+    it('showStep is a no-op when no callback is registered', () => {
+      registerStepHudCallback(null);
+      expect(() =>
+        bridge().showStep({ id: 'x', description: 'y' }),
+      ).not.toThrow();
+    });
+  });
+
+  describe('findFiberByTestId (bridge)', () => {
+    it('returns true when testID exists in fiber tree', () => {
+      const fiber = makeFiber({
+        child: makeFiber({ testID: 'target-btn' }),
+      });
+      installFiberHook(fiber);
+
+      expect(bridge().findFiberByTestId('target-btn')).toBe(true);
+    });
+
+    it('returns false when testID does not exist', () => {
+      installFiberHook(makeFiber());
+
+      expect(bridge().findFiberByTestId('missing-id')).toBe(false);
+    });
+  });
+
   describe('pressTestId', () => {
     it('presses a component found by testID', () => {
       const onPress = jest.fn();