Add per-user page tone modes to reader

test/services.test.js

@@ -64,6 +64,10 @@ test('three services integrate collections, auth, custom covers and private heal
     assert.equal(anotherLogin.status, 200);
     const anotherCookie = anotherLogin.headers.get('set-cookie').split(';')[0];
     const anotherRequest = (endpoint, body) => fetch(base + endpoint, { headers: { cookie: anotherCookie, 'content-type': 'application/json' }, ...(body ? { method: 'POST', body: JSON.stringify(body) } : {}) });
+    assert.equal((await (await request('/api/me')).json()).settings.pageTone, 'original');
+    assert.equal((await (await request('/api/settings', { pageTone: 'sepia' })).json()).settings.pageTone, 'sepia');
+    assert.equal((await (await request('/api/settings', { pageTone: 'invalid' })).json()).settings.pageTone, 'sepia');
+    assert.equal((await (await anotherRequest('/api/me')).json()).settings.pageTone, 'original');
     assert.equal((await (await anotherRequest('/api/greatest')).json()).entries[0].myRating, null);
     assert.equal((await anotherRequest('/api/greatest/rating', { id: firstPick.id, rating: 'good' })).status, 200);
     const communityPick = (await (await request('/api/greatest')).json()).entries[0];