feat: implement night mode functionality with UI updates and journey tracking

- Added NightScreen component for displaying night mode information and alerts.
- Introduced NextStops component to show upcoming stops during a journey.
- Implemented logic for determining night mode activation based on schedule and user settings.
- Created journey utility functions to manage onward journey data and stop information.
- Updated tests to cover new night mode features and journey logic.
- Added fixture for testing night mode scenarios with specific timestamps.
- Removed QR code from night screen for a cleaner UI experience.
- Enhanced admin settings to manage night mode configurations.

test/device.test.mjs

@@ -1,7 +1,7 @@
 import test from 'node:test';
 import assert from 'node:assert/strict';
 import { readFile } from 'node:fs/promises';
-import { isManagedState } from '../src/lib/device.mjs';
+import { hydrateManagedState, isManagedState } from '../src/lib/device.mjs';
 import { createDeviceBridge } from '../server/device.mjs';
 import { createApp } from '../server/index.mjs';
 const source = await readFile(new URL('../src/lib/storage.ts', import.meta.url), 'utf8');
@@ -14,6 +14,9 @@ test('managed configuration validation rejects damaged, mismatched or unsupporte
   for (const patch of [{ rowCount: 8 }, { demo: true }, { theme: 'sepia' }, { stopId: 2 }, { colorScheme: 'sky' }, { routeFilter: '-1' }, { holdNear: null }]) assert.equal(isManagedState({ ...value, device: { ...value.device, settings: { ...defaults, ...patch } } }), false);
   assert.equal(isManagedState({ ...value, config: { ...value.config, refreshSeconds: 0 } }), false);
   assert.equal(isManagedState(null), false);
+  const legacy = structuredClone(value); delete legacy.device.settings.nightMode;delete legacy.device.settings.nightWakeMinutes;
+  assert.equal(isManagedState(legacy),true);assert.equal(hydrateManagedState(legacy).device.settings.nightMode,'auto');
+  assert.equal(isManagedState({...value,device:{...value.device,settings:{...defaults,nightWakeMinutes:5}}}),false);
 });
 test('pairing bridge keeps secrets in HttpOnly cookies, binds data to the individual device and rejects cross-site writes', async t => {
   const tokenA = 'A'.repeat(43), tokenB = 'B'.repeat(43), calls = [];