diff --git a/frontend/src/routes/persons/review/page.server.spec.ts b/frontend/src/routes/persons/review/page.server.spec.ts
index 85898add..93260ddc 100644
--- a/frontend/src/routes/persons/review/page.server.spec.ts
+++ b/frontend/src/routes/persons/review/page.server.spec.ts
@@ -45,8 +45,39 @@ function runAction(
 	} as any);
 }
 
-describe('persons/review confirm action — WRITE_ALL guard', () => {
-	it('returns fail(403) when the user lacks WRITE_ALL', async () => {
+describe('persons/review confirm action', () => {
+	it('returns { success: true } on backend 200', async () => {
+		const apiCall = mockApi({ ok: true, status: 200 });
+		const fd = new FormData();
+		fd.append('id', 'p-1');
+
+		const result = await runAction(actions.confirm, fd, writer);
+
+		expect(apiCall).toHaveBeenCalledOnce();
+		expect(result).toEqual({ success: true });
+	});
+
+	it('returns fail(403) on backend 403', async () => {
+		mockApi({ ok: false, status: 403, error: { code: 'FORBIDDEN' } });
+		const fd = new FormData();
+		fd.append('id', 'p-1');
+
+		const result = await runAction(actions.confirm, fd, writer);
+
+		expect(result).toMatchObject({ status: 403 });
+	});
+
+	it('returns fail(404) on backend 404', async () => {
+		mockApi({ ok: false, status: 404, error: { code: 'NOT_FOUND' } });
+		const fd = new FormData();
+		fd.append('id', 'p-missing');
+
+		const result = await runAction(actions.confirm, fd, writer);
+
+		expect(result).toMatchObject({ status: 404 });
+	});
+
+	it('returns fail(403) when the user lacks WRITE_ALL (server-side guard)', async () => {
 		const apiCall = mockApi({ ok: true, status: 200 });
 		const fd = new FormData();
 		fd.append('id', 'p-1');
@@ -58,8 +89,39 @@ describe('persons/review confirm action — WRITE_ALL guard', () => {
 	});
 });
 
-describe('persons/review delete action — WRITE_ALL guard', () => {
-	it('returns fail(403) when the user lacks WRITE_ALL', async () => {
+describe('persons/review delete action', () => {
+	it('returns { success: true } on backend 200', async () => {
+		const apiCall = mockApi({ ok: true, status: 200 });
+		const fd = new FormData();
+		fd.append('id', 'p-1');
+
+		const result = await runAction(actions.delete, fd, writer);
+
+		expect(apiCall).toHaveBeenCalledOnce();
+		expect(result).toEqual({ success: true });
+	});
+
+	it('returns fail(403) on backend 403', async () => {
+		mockApi({ ok: false, status: 403, error: { code: 'FORBIDDEN' } });
+		const fd = new FormData();
+		fd.append('id', 'p-1');
+
+		const result = await runAction(actions.delete, fd, writer);
+
+		expect(result).toMatchObject({ status: 403 });
+	});
+
+	it('returns fail(404) on backend 404', async () => {
+		mockApi({ ok: false, status: 404, error: { code: 'NOT_FOUND' } });
+		const fd = new FormData();
+		fd.append('id', 'p-missing');
+
+		const result = await runAction(actions.delete, fd, writer);
+
+		expect(result).toMatchObject({ status: 404 });
+	});
+
+	it('returns fail(403) when the user lacks WRITE_ALL (server-side guard)', async () => {
 		const apiCall = mockApi({ ok: true, status: 200 });
 		const fd = new FormData();
 		fd.append('id', 'p-1');
@@ -71,8 +133,53 @@ describe('persons/review delete action — WRITE_ALL guard', () => {
 	});
 });
 
-describe('persons/review merge action — WRITE_ALL guard', () => {
-	it('returns fail(403) when the user lacks WRITE_ALL', async () => {
+describe('persons/review merge action', () => {
+	it('returns { success: true } on backend 200', async () => {
+		const apiCall = mockApi({ ok: true, status: 200 });
+		const fd = new FormData();
+		fd.append('id', 'p-1');
+		fd.append('targetPersonId', 'p-2');
+
+		const result = await runAction(actions.merge, fd, writer);
+
+		expect(apiCall).toHaveBeenCalledOnce();
+		expect(result).toEqual({ success: true });
+	});
+
+	it('returns fail(400) when targetPersonId is missing', async () => {
+		const apiCall = mockApi({ ok: true, status: 200 });
+		const fd = new FormData();
+		fd.append('id', 'p-1');
+
+		const result = await runAction(actions.merge, fd, writer);
+
+		expect(apiCall).not.toHaveBeenCalled();
+		expect(result).toMatchObject({ status: 400 });
+	});
+
+	it('returns fail(403) on backend 403', async () => {
+		mockApi({ ok: false, status: 403, error: { code: 'FORBIDDEN' } });
+		const fd = new FormData();
+		fd.append('id', 'p-1');
+		fd.append('targetPersonId', 'p-2');
+
+		const result = await runAction(actions.merge, fd, writer);
+
+		expect(result).toMatchObject({ status: 403 });
+	});
+
+	it('returns fail(404) on backend 404', async () => {
+		mockApi({ ok: false, status: 404, error: { code: 'NOT_FOUND' } });
+		const fd = new FormData();
+		fd.append('id', 'p-1');
+		fd.append('targetPersonId', 'p-missing');
+
+		const result = await runAction(actions.merge, fd, writer);
+
+		expect(result).toMatchObject({ status: 404 });
+	});
+
+	it('returns fail(403) when the user lacks WRITE_ALL (server-side guard)', async () => {
 		const apiCall = mockApi({ ok: true, status: 200 });
 		const fd = new FormData();
 		fd.append('id', 'p-1');
@@ -85,8 +192,53 @@ describe('persons/review merge action — WRITE_ALL guard', () => {
 	});
 });
 
-describe('persons/review rename action — WRITE_ALL guard', () => {
-	it('returns fail(403) when the user lacks WRITE_ALL', async () => {
+describe('persons/review rename action', () => {
+	it('returns { success: true } on backend 200', async () => {
+		const apiCall = mockApi({ ok: true, status: 200 });
+		const fd = new FormData();
+		fd.append('id', 'p-1');
+		fd.append('lastName', 'Smith');
+
+		const result = await runAction(actions.rename, fd, writer);
+
+		expect(apiCall).toHaveBeenCalledOnce();
+		expect(result).toEqual({ success: true });
+	});
+
+	it('returns fail(400) when lastName is missing', async () => {
+		const apiCall = mockApi({ ok: true, status: 200 });
+		const fd = new FormData();
+		fd.append('id', 'p-1');
+
+		const result = await runAction(actions.rename, fd, writer);
+
+		expect(apiCall).not.toHaveBeenCalled();
+		expect(result).toMatchObject({ status: 400 });
+	});
+
+	it('returns fail(403) on backend 403', async () => {
+		mockApi({ ok: false, status: 403, error: { code: 'FORBIDDEN' } });
+		const fd = new FormData();
+		fd.append('id', 'p-1');
+		fd.append('lastName', 'Smith');
+
+		const result = await runAction(actions.rename, fd, writer);
+
+		expect(result).toMatchObject({ status: 403 });
+	});
+
+	it('returns fail(404) on backend 404', async () => {
+		mockApi({ ok: false, status: 404, error: { code: 'NOT_FOUND' } });
+		const fd = new FormData();
+		fd.append('id', 'p-missing');
+		fd.append('lastName', 'Smith');
+
+		const result = await runAction(actions.rename, fd, writer);
+
+		expect(result).toMatchObject({ status: 404 });
+	});
+
+	it('returns fail(403) when the user lacks WRITE_ALL (server-side guard)', async () => {
 		const apiCall = mockApi({ ok: true, status: 200 });
 		const fd = new FormData();
 		fd.append('id', 'p-1');
@@ -98,18 +250,3 @@ describe('persons/review rename action — WRITE_ALL guard', () => {
 		expect(result).toMatchObject({ status: 403 });
 	});
 });
-
-// Sanity: writers still pass through (no 403 from the guard). Full happy-path coverage lives
-// in the action-by-action describe blocks added later.
-describe('persons/review confirm action — writer passes guard', () => {
-	it('does NOT short-circuit with 403 when the user has WRITE_ALL', async () => {
-		const apiCall = mockApi({ ok: true, status: 200 });
-		const fd = new FormData();
-		fd.append('id', 'p-1');
-
-		const result = await runAction(actions.confirm, fd, writer);
-
-		expect(apiCall).toHaveBeenCalled();
-		expect(result).toEqual({ success: true });
-	});
-});