Add NMEA journal import with wizard and CRC-based duplicate detection.

Enables importing .nmea logs into travel-day events with interval/change modes, optional GPS track, local encrypted archive, and a test fixture for the Kieler Förde route.

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

client/src/services/nmea/kielerFoerdeTestdata.test.ts

@@ -0,0 +1,31 @@
+import { readFileSync } from 'node:fs'
+import { resolve } from 'node:path'
+import { describe, expect, it } from 'vitest'
+import { parseNmeaFile } from './nmeaParse.js'
+import { detectNmeaChanges } from './nmeaChangeDetection.js'
+import { generateNmeaJournalCandidates } from './nmeaJournalGenerator.js'
+
+const nmeaPath = resolve(import.meta.dirname, '../../../../testdata/tracks/kieler-foerde-5sm.nmea')
+
+describe('kieler-foerde testdata', () => {
+  it('parses the sample NMEA log and yields journal candidates', () => {
+    const text = readFileSync(nmeaPath, 'utf8')
+    const result = parseNmeaFile(text, 'kieler-foerde-5sm.nmea')
+
+    expect(result.stats.checksumErrors).toBe(0)
+    expect(result.points.length).toBeGreaterThan(30)
+    expect(result.stats.sentenceTypes).toEqual(expect.arrayContaining(['RMC', 'GGA', 'MWV', 'DPT', 'MDA']))
+
+    const changes = detectNmeaChanges(result.points)
+    expect(changes.length).toBeGreaterThan(0)
+    expect(changes.some((c) => ['wind', 'engine_start', 'departure', 'speed', 'depth'].includes(c.type))).toBe(true)
+
+    const journal = generateNmeaJournalCandidates({
+      points: result.points,
+      mode: 'both',
+      intervalMinutes: 60,
+      t: (key) => key
+    })
+    expect(journal.candidates.length).toBeGreaterThanOrEqual(3)
+  })
+})