diff --git a/src/App.test.tsx b/src/App.test.tsx
new file mode 100644
index 0000000..b7aa1f4
--- /dev/null
+++ b/src/App.test.tsx
@@ -0,0 +1,17 @@
+// @vitest-environment jsdom
+// Covers WIZD-02: App renders the correct step component for currentStep 0, 1, 2
+import { describe, it, expect } from 'vitest';
+
+describe('App — step routing', () => {
+  it('renders BackendSelectionStep when currentStep is 0', () => {
+    expect.fail('not yet implemented');
+  });
+
+  it('renders RemoteConfigStep when currentStep is 1', () => {
+    expect.fail('not yet implemented');
+  });
+
+  it('renders DeploymentStep when currentStep is 2', () => {
+    expect.fail('not yet implemented');
+  });
+});
diff --git a/src/components/wizard/BackendSelectionStep.test.tsx b/src/components/wizard/BackendSelectionStep.test.tsx
new file mode 100644
index 0000000..de17130
--- /dev/null
+++ b/src/components/wizard/BackendSelectionStep.test.tsx
@@ -0,0 +1,50 @@
+// @vitest-environment jsdom
+// Covers WIZD-01: card grid renders Azure Blob, Amazon S3, S3-Compatible (Azure first)
+// Covers WIZD-04: remote name field validates alphanumeric/dash/underscore
+import { describe, it, expect } from 'vitest';
+
+describe('BackendSelectionStep', () => {
+  describe('WIZD-01: backend card grid', () => {
+    it('renders Azure Blob Storage card', () => {
+      expect.fail('not yet implemented');
+    });
+
+    it('renders Amazon S3 card', () => {
+      expect.fail('not yet implemented');
+    });
+
+    it('renders S3-Compatible card', () => {
+      expect.fail('not yet implemented');
+    });
+
+    it('Azure Blob is listed before S3 in DOM order', () => {
+      expect.fail('not yet implemented');
+    });
+
+    it('clicking a backend card dispatches SET_BACKEND_TYPE and SET_STEP', () => {
+      expect.fail('not yet implemented');
+    });
+  });
+
+  describe('WIZD-04: remote name field', () => {
+    it('renders remote name input at the top of the step', () => {
+      expect.fail('not yet implemented');
+    });
+
+    it('shows no error before first Next attempt', () => {
+      expect.fail('not yet implemented');
+    });
+
+    it('shows inline error after first Next attempt with invalid name', () => {
+      expect.fail('not yet implemented');
+    });
+
+    it('accepts alphanumeric, dashes, and underscores', () => {
+      expect.fail('not yet implemented');
+    });
+
+    it('rejects names with spaces or special characters', () => {
+      expect.fail('not yet implemented');
+    });
+  });
+});
diff --git a/src/components/wizard/RemoteConfigStep.test.tsx b/src/components/wizard/RemoteConfigStep.test.tsx
new file mode 100644
index 0000000..e549f9c
--- /dev/null
+++ b/src/components/wizard/RemoteConfigStep.test.tsx
@@ -0,0 +1,45 @@
+// @vitest-environment jsdom
+// Covers BACK-01: Azure Blob config form — account + SAS/Key toggle, both values preserved
+// Covers BACK-02: Amazon S3 config form — access_key_id, secret_access_key, region
+// Covers BACK-03: S3-Compatible config form — same as S3 plus endpoint field
+import { describe, it, expect } from 'vitest';
+
+describe('RemoteConfigStep', () => {
+  describe('BACK-01: Azure Blob form', () => {
+    it('renders Storage Account Name field', () => {
+      expect.fail('not yet implemented');
+    });
+
+    it('shows SAS URL field by default (default auth method)', () => {
+      expect.fail('not yet implemented');
+    });
+
+    it('switching auth toggle to Access Key shows key field and hides SAS URL', () => {
+      expect.fail('not yet implemented');
+    });
+
+    it('switching auth toggle does not clear the hidden field value', () => {
+      expect.fail('not yet implemented');
+    });
+  });
+
+  describe('BACK-02: Amazon S3 form', () => {
+    it('renders access_key_id field', () => {
+      expect.fail('not yet implemented');
+    });
+
+    it('renders secret_access_key field', () => {
+      expect.fail('not yet implemented');
+    });
+
+    it('renders region field', () => {
+      expect.fail('not yet implemented');
+    });
+  });
+
+  describe('BACK-03: S3-Compatible form', () => {
+    it('renders endpoint field in addition to S3 fields', () => {
+      expect.fail('not yet implemented');
+    });
+  });
+});
diff --git a/src/components/wizard/StepIndicator.test.tsx b/src/components/wizard/StepIndicator.test.tsx
new file mode 100644
index 0000000..2d1d9b4
--- /dev/null
+++ b/src/components/wizard/StepIndicator.test.tsx
@@ -0,0 +1,27 @@
+// @vitest-environment jsdom
+// Covers WIZD-03: going back preserves remote.params; deployment options are untouched
+import { describe, it, expect } from 'vitest';
+
+describe('StepIndicator', () => {
+  describe('WIZD-03: back navigation preserves state', () => {
+    it('clicking a completed step dispatches SET_STEP', () => {
+      expect.fail('not yet implemented');
+    });
+
+    it('clicking back to step 0 dispatches SET_REMOTE_PARAMS({}) to clear params', () => {
+      expect.fail('not yet implemented');
+    });
+
+    it('clicking back to step 0 does NOT dispatch RESET (deployment preserved)', () => {
+      expect.fail('not yet implemented');
+    });
+
+    it('step 0 shows as active when currentStep is 0', () => {
+      expect.fail('not yet implemented');
+    });
+
+    it('completed steps are clickable', () => {
+      expect.fail('not yet implemented');
+    });
+  });
+});