fix: persist notification preferences and clarify delivery controls

tests/http-state.test.mjs

@@ -249,3 +249,10 @@ test('competitor watchlist keeps the saved roster when a stale or invalid write
  assert.deepEqual((await request('/api/me/data')).data.veri[anahtar],[item]);
  assert.equal((await request('/api/me/data','PUT',{anahtar,deger:[],revision:first.data.revision})).status,200);
 });
+test('notification preferences reject stale writes and malformed quiet times',async()=>{
+ const anahtar='reminder',deger={pushEnabled:true,quietEnabled:true,quietStart:'22:00',quietEnd:'08:00'};
+ const first=await request('/api/me/data','PUT',{anahtar,deger,revision:null});assert.equal(first.status,200);
+ assert.equal((await request('/api/me/data','PUT',{anahtar,deger:{...deger,quietStart:'25:00'},revision:first.data.revision})).status,400);
+ assert.equal((await request('/api/me/data','PUT',{anahtar,deger:{...deger,pushEnabled:false},revision:null})).status,409);
+ assert.deepEqual((await request('/api/me/data')).data.veri.reminder,deger);
+});

tests/reminder-preferences.test.mjs

@@ -0,0 +1,19 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import {validateReminderPreferences,quietNow} from '../src/services/reminderPreferences.js';
+const prefs={pushEnabled:true,quietEnabled:true,quietStart:'22:00',quietEnd:'08:00'};
+const at=(h,m)=>({getHours:()=>h,getMinutes:()=>m});
+test('quiet hours handle midnight and boundaries in the device local clock',()=>{
+ assert.equal(quietNow(prefs,at(22,0)),true);assert.equal(quietNow(prefs,at(7,59)),true);
+ assert.equal(quietNow(prefs,at(8,0)),false);assert.equal(quietNow(prefs,at(21,59)),false);
+ assert.equal(quietNow({...prefs,quietStart:'08:00',quietEnd:'12:00'},at(10,0)),true);
+ assert.equal(quietNow({...prefs,quietStart:'08:00'},at(8,0)),false);
+ assert.equal(quietNow({...prefs,quietEnabled:false},at(23,0)),false);
+});
+test('invalid quiet preferences are rejected and cannot silently enable notifications',()=>{
+ for(const quietStart of ['', '24:00','08:60',null]){
+  assert.throws(()=>validateReminderPreferences({...prefs,quietStart}));
+  assert.equal(quietNow({...prefs,quietStart},at(12,0)),true);
+ }
+ assert.throws(()=>validateReminderPreferences({...prefs,pushEnabled:'true'}));
+});