feat(logs): Sichtweite und kompakte Wetter-Slider im Ereignisprotokoll

Ergänzt visibility in Editor und Live-Log inkl. OWM-Übernahme, CSV-Export
und touch-taugliche Slider für Luftdruck, Seegang, Sichtweite und Krängung.

Co-authored-by: Cursor <cursoragent@cursor.com>

client/src/utils/openWeatherMap.test.ts

@@ -1,5 +1,6 @@
 import { describe, expect, it } from 'vitest'
 import {
+  formatOwmVisibilityMeters,
   formatWindStrengthBeaufort,
   mpsToBeaufort,
   parseOwmCurrentWeather
@@ -13,15 +14,23 @@ describe('openWeatherMap', () => {
     expect(formatWindStrengthBeaufort(5)).toBe('3 Bft (5.0 m/s)')
   })
 
+  it('formats visibility in metres', () => {
+    expect(formatOwmVisibilityMeters(500)).toBe('500 m')
+    expect(formatOwmVisibilityMeters(10000)).toBe('10 km')
+    expect(formatOwmVisibilityMeters(2500)).toBe('2.5 km')
+  })
+
   it('parses OWM current weather payload', () => {
     const parsed = parseOwmCurrentWeather({
       wind: { speed: 8.5, deg: 225 },
       main: { pressure: 1018, temp: 17.4 },
+      visibility: 10000,
       weather: [{ icon: '04d', description: 'Bedeckt' }]
     })
     expect(parsed.windDirection).toBe('SW')
     expect(parsed.windStrength).toBe('5 Bft (8.5 m/s)')
     expect(parsed.windPressure).toBe('1018')
+    expect(parsed.visibility).toBe('10 km')
     expect(parsed.tempC).toBe('17.4')
     expect(parsed.precipText).toBe('Bedeckt')
     expect(parsed.weatherIcon).toBe('04d')