chore: release v0.1.0.53

README: Neue Features und klare Trennung Profil vs. Logbuch.
Dokumentiert Kompass-Dial, Benutzerprofil, Feedback/Ntfy, Demo-URL, Tests und aktualisierte Env-Variablen. Co-authored-by: Cursor <cursoragent@cursor.com>
2026-05-31 12:16:02 +02:00 · 2026-05-31 12:15:46 +02:00 · 2026-05-31 12:14:43 +02:00 · 2026-05-31 12:12:15 +02:00 · 2026-05-31 12:09:34 +02:00 · 2026-05-31 12:07:37 +02:00
47 changed files with 3079 additions and 406 deletions
@@ -2,7 +2,7 @@

 Digitales Yacht-Logbuch als Progressive Web App (PWA) — **kostenlos**, **werbefrei**, offline-fähig, End-to-End-verschlüsselt und mit Passkey-Anmeldung.

-**Live:** [kapteins-daagbok.eu](https://kapteins-daagbok.eu)
+**Live:** [kapteins-daagbok.eu](https://kapteins-daagbok.eu) · **Demo:** [kapteins-daagbok.eu/demo](https://kapteins-daagbok.eu/demo)

 ## Überblick

@@ -15,19 +15,29 @@ Alle sensiblen Inhalte werden **clientseitig verschlüsselt** (Web Crypto API).
 - **Passkey-Authentifizierung** (WebAuthn) mit optionaler Recovery-Phrase und lokalem PIN-Fallback
 - **Mehrere Logbücher** pro Benutzerkonto — eigene Logbücher und per Einladung geteilte Logbücher (Crew-Zugang) klar getrennt
 - **Reisetage** mit Hafen, Wetter, Tankständen, Ereignissen und Tagesnummer
+- **Kompass-Dial** für MgK- und RwK-Kurse — Ring-Eingabe, Gradfeld, Schrittweite 1°/5°/10° (maritime Orientierung: 0° = Nord)
 - **GPS-Tracks** (GPX/KML/GeoJSON-Upload, Karte, Statistiken)
 - **Foto-Anhänge** pro Reisetag
 - **Passkey-Signaturen** für Skipper und Crew (hybride elektronische Signatur)
 - **Schiffsdaten** und **Crew-Profile** (Skipper + Mitglieder)
 - **Statistik-Dashboard** — Strecken, Verbrauch, Segel/Motor, Hafenkette (pro Logbuch oder accountweit)
+- **Benutzerprofil** — kontoweite Einstellungen: Darstellung (Theme, Hell/Dunkel), OpenWeatherMap-API-Key, Web Push, PWA-Installation, Onboarding-Tour, Passkey-Verwaltung, Account-Statistik
 - **Kollaboration** — Crew per Einladungslink einladen (Schreib- oder Lesezugriff)
- **Push-Benachrichtigungen** (optional) — Logbuch-Eigner per Web Push informieren, wenn Crew Änderungen synchronisiert (ohne Klartext-Inhalte; Opt-in in den Einstellungen)
+- **Push-Benachrichtigungen** (optional) — Logbuch-Eigner per Web Push informieren, wenn Crew Änderungen synchronisiert (ohne Klartext-Inhalte; Opt-in im Benutzerprofil)
 - **Read-only-Freigabe** — öffentlicher Lese-Link für Dritte
 - **Export** — PDF pro Reisetag, CSV-Download/-Teilen
 - **Backup & Wiederherstellung** — vollständiges verschlüsseltes Logbuch-Backup (Einträge, Fotos, GPS, Crew, Schiff) als `.daagbok.json`; Restore auf gleichem oder neuem Account
+- **Feedback** — Bug-, Feature- und allgemeine Rückmeldungen aus der App (serverseitig via [Ntfy](https://ntfy.sh) oder self-hosted)
 - **PWA** — installierbar auf iOS/Android, Offline-Modus, Update-Hinweise
 - **Mehrsprachig** — Deutsch und Englisch
- **Demo-Logbuch & Onboarding-Tour** für neue Nutzer
+- **Demo-Logbuch & Onboarding-Tour** für neue Nutzer (auch unter `/demo` ohne Anmeldung)
+
+### Benutzerprofil vs. Logbuch-Einstellungen
+
+| Bereich | Inhalt |
+|---------|--------|
+| **Benutzerprofil** | Theme, Farbschema, Wetter-API-Key, Push, PWA, Tour, Passkeys, Account löschen |
+| **Logbuch-Einstellungen** | Crew-Einladungen, öffentliche Freigabe, Backup & Wiederherstellung (nur Eigner) |

 ## Architektur

@@ -48,6 +58,7 @@ Alle sensiblen Inhalte werden **clientseitig verschlüsselt** (Web Crypto API).
 | Auth | WebAuthn (Passkeys) + signiertes HttpOnly-Session-Cookie (`daagbok_session`) |
 | Krypto | Web Crypto API (AES-GCM), BIP39 Recovery |
 | Push (optional) | Web Push (VAPID), Custom Service Worker (`injectManifest`) |
+| Feedback (optional) | Ntfy (HTTP Publish) |

 ### Rollen & Zugriff

@@ -73,7 +84,7 @@ Skipper- und Crew-Profile im Logbuch sind **Inhaltsdaten** (verschlüsselt), nic

 ## Backup & Wiederherstellung

-Nur der **Logbuch-Eigner** kann unter **Einstellungen → Backup & Wiederherstellung** ein vollständiges Backup erstellen:
+Nur der **Logbuch-Eigner** kann unter **Logbuch-Einstellungen → Backup & Wiederherstellung** ein vollständiges Backup erstellen:

 1. Backup-Passphrase wählen (min. 8 Zeichen, getrennt von der Datei aufbewahren)
 2. Download als `.daagbok.json` — enthält alle verschlüsselten Payloads inkl. **Fotos** und GPS-Tracks
@@ -83,7 +94,7 @@ Vor dem Löschen eines Logbuchs weist die App auf diese Funktion hin. Crew-Einla

 ## Push-Benachrichtigungen (optional)

-Logbuch-**Eigner** können unter **Einstellungen** Web Push aktivieren. Sobald ein eingeladenes Crewmitglied mit Schreibrechten (`WRITE`) Änderungen synchronisiert, erhält der Owner eine **generische** Benachrichtigung — der Server kennt keine Logbuch-Inhalte (Zero-Knowledge).
+Logbuch-**Eigner** können im **Benutzerprofil** Web Push aktivieren. Sobald ein eingeladenes Crewmitglied mit Schreibrechten (`WRITE`) Änderungen synchronisiert, erhält der Owner eine **generische** Benachrichtigung — der Server kennt keine Logbuch-Inhalte (Zero-Knowledge).

 | Aspekt | Verhalten |
 |--------|-----------|
@@ -102,20 +113,32 @@ Schlüssel erzeugen: `npx web-push generate-vapid-keys` (im `server/`-Verzeichni

 Ausführlicher Implementierungs- und Testplan: [docs/push-notifications-plan.md](docs/push-notifications-plan.md).

+## Feedback (optional)
+
+Eingeloggte Nutzer können über das Feedback-Formular in der App Rückmeldungen senden. Der Server leitet sie an einen **Ntfy**-Topic weiter (kein Klartext-Logbuch auf dem Server).
+
+| Variable | Bedeutung |
+|----------|-----------|
+| `NTFY_SERVER` | Basis-URL (Standard: `https://ntfy.sh`) |
+| `NTFY_TOPIC` | Topic-Name (ohne URL) |
+| `NTFY_TOKEN` | Optional: Access-Token für geschützte Topics |
+
+Ohne `NTFY_TOPIC` antwortet die API mit „nicht konfiguriert“. Rate-Limiting und einfacher Spam-Schutz sind serverseitig aktiv.
+
 ## Projektstruktur

 ```
 kapteins-daagbok/
 ├── client/              # React-PWA (Frontend)
 │   ├── src/
-│   │   ├── components/  # UI-Komponenten
+│   │   ├── components/  # UI (u. a. CourseDialInput, UserProfilePage, FeedbackModal)
 │   │   ├── services/    # Auth, Sync, Krypto, Backup, Push, Analytics, …
 │   │   ├── sw.ts        # Service Worker (Precache + Web Push)
 │   │   └── i18n/        # DE/EN-Übersetzungen
 │   └── Dockerfile       # Nginx-Produktions-Image
 ├── server/              # Express-API + Prisma
-│   ├── src/routes/      # auth, logbooks, sync, collaboration, sign, push
-│   ├── src/services/    # z. B. pushNotify (Web Push)
+│   ├── src/routes/      # auth, logbooks, sync, collaboration, sign, push, feedback, weather
+│   ├── src/services/    # z. B. pushNotify, ntfyNotify
 │   └── prisma/          # Datenbankschema
 ├── docs/                # Projektdokumentation
 ├── scripts/             # Dev- und Deploy-Skripte
@@ -128,8 +151,9 @@ kapteins-daagbok/
 - **Node.js** 20+
 - **npm**
 - **Docker** (für PostgreSQL in der Entwicklung oder den vollständigen Stack)
- Optional: eigener OpenWeatherMap-API-Key in den Einstellungen (sonst serverseitiger Key aus `.env`)
+- Optional: eigener OpenWeatherMap-API-Key im **Benutzerprofil** (sonst serverseitiger Key aus `.env`)
 - Optional: VAPID-Schlüssel für Web Push (siehe Abschnitt Push-Benachrichtigungen)
+- Optional: Ntfy-Topic für Feedback (siehe Abschnitt Feedback)

 ## Lokale Entwicklung

@@ -166,6 +190,10 @@ SESSION_SECRET=                 # openssl rand -base64 48 (in Prod Pflicht)
 VAPID_PUBLIC_KEY=
 VAPID_PRIVATE_KEY=
 VAPID_SUBJECT=mailto:support@kapteins-daagbok.eu
+# Optional — Feedback via Ntfy
+NTFY_SERVER=https://ntfy.sh
+NTFY_TOPIC=
+NTFY_TOKEN=
 ```

 `./scripts/start-dev.sh` prüft `ORIGIN` und `SESSION_SECRET` beim Start und gibt Hinweise aus.
@@ -189,6 +217,15 @@ cd server && npx prisma db push && cd ..
 | Frontend (Vite) | http://localhost:5173 |
 | Backend API | http://localhost:5000 |
 | Health Check | http://localhost:5000/api/health |
+| Public Demo | http://localhost:5173/demo |
+
+### 5. Tests (Frontend)
+
+```bash
+cd client && npm test
+```
+
+Vitest-Unit-Tests für Utils, i18n und Services (z. B. Kurswinkel, Benutzereinstellungen).

 ## Docker (produktionsnah)

@@ -198,9 +235,9 @@ Gesamten Stack lokal bauen und starten:
 ./scripts/start-dev-docker.sh
 ```

-Frontend: http://localhost · API: http://localhost/api/health
+Frontend: http://localhost · API: http://localhost/api/health · Demo: http://localhost/demo

-Umgebungsvariablen in `.env` setzen — mindestens `RP_ID`, `ORIGIN` (z. B. `http://localhost`) und `SESSION_SECRET`. Für Push die VAPID-Variablen an den Backend-Container durchreichen (`docker-compose.yml` → `backend.environment`).
+Umgebungsvariablen in `.env` setzen — mindestens `RP_ID`, `ORIGIN` (z. B. `http://localhost`) und `SESSION_SECRET`. Für Push die VAPID-Variablen an den Backend-Container durchreichen (`docker-compose.yml` → `backend.environment`). Für Feedback `NTFY_*` setzen.

 ## Deployment

@@ -212,7 +249,7 @@ Produktions-Update auf den Server (konfigurierbar via Umgebungsvariablen):

 Standard-Ziel: `root@10.0.0.25:/opt/kapteins-daagbok` — per `REMOTE_HOST`, `REMOTE_USER`, `REMOTE_DIR` überschreibbar.

-Auf dem Server müssen `server/.env` (oder gleichwertige Umgebung) u. a. `DATABASE_URL`, `RP_ID`, `ORIGIN`, `SESSION_SECRET` (≥ 32 Zeichen) und bei Push `VAPID_*` enthalten. Nach Schema-Änderungen: `npx prisma db push` im Backend-Container.
+Auf dem Server müssen `server/.env` (oder gleichwertige Umgebung) u. a. `DATABASE_URL`, `RP_ID`, `ORIGIN`, `SESSION_SECRET` (≥ 32 Zeichen) und bei Push `VAPID_*` enthalten. Optional `NTFY_*` für Feedback. Nach Schema-Änderungen: `npx prisma db push` im Backend-Container.

 ## Dokumentation

@@ -220,6 +257,7 @@ Auf dem Server müssen `server/.env` (oder gleichwertige Umgebung) u. a. `DATABA
 |----------|--------|
 | [docs/plausible-events.md](docs/plausible-events.md) | Custom Events für Plausible Analytics |
 | [docs/push-notifications-plan.md](docs/push-notifications-plan.md) | Web Push: Architektur, API, Testplan |
+| [docs/plan-compass-course-dial.md](docs/plan-compass-course-dial.md) | Kompass-Dial: UX- und Implementierungsplan |
 | [docs/marketing/kapteins-daagbok-beta-flyer.pdf](docs/marketing/kapteins-daagbok-beta-flyer.pdf) | Beta-Flyer (DIN A4) zum Ausdrucken — Quelle: `docs/marketing/beta-flyer.html`, neu erzeugen: `cd client && npm run generate:flyer` |
 | [.planning/PROJECT.md](.planning/PROJECT.md) | Produktvision und Anforderungen (GSD) |

@@ -1 +1 @@
-0.1.0.45
+0.1.0.54
@@ -36,7 +36,7 @@
    <script defer data-domain="kapteins-daagbok.eu" src="https://plausible.elpatron.me/js/script.tagged-events.js"></script>
    <title>Kapteins Daagbok – Kostenloses digitales Yacht-Logbuch (werbefrei)</title>
  </head>
-  <body>
+  <body style="margin:0;background:#0b0c10;color:#e2e8f0">
    <div id="root"></div>
    <script type="module" src="/src/main.tsx"></script>
  </body>
@@ -32,12 +32,14 @@
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        "eslint-plugin-react-refresh": "^0.5.2",
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        "qrcode": "^1.5.4",
        "typescript": "~6.0.2",
        "typescript-eslint": "^8.59.2",
        "vite": "^6.3.5",
-        "vite-plugin-pwa": "^1.0.1"
+        "vite-plugin-pwa": "^1.0.1",
+        "vitest": "^3.2.4"
      },
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@@ -2896,6 +2898,24 @@
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@@ -2991,6 +3011,23 @@
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      "license": "MIT"
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@@ -3255,6 +3292,131 @@
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@@ -3360,6 +3522,16 @@
        "url": "https://github.com/sponsors/ljharb"
      }
    },
+    "node_modules/assertion-error": {
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@@ -3541,6 +3713,16 @@
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+      "license": "MIT",
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@@ -7470,6 +7869,79 @@
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@@ -7486,6 +7958,16 @@
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@@ -7610,6 +8092,23 @@
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@@ -7,6 +7,7 @@
    "dev": "vite",
    "build": "tsc -b && vite build",
    "lint": "eslint .",
+    "test": "vitest run",
    "preview": "vite preview",
    "generate:flyer": "node ../scripts/generate-beta-flyer.mjs",
    "generate:flyer:setup": "playwright install chromium"
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  },
  "engines": {
    "node": ">=20.0.0"
@@ -129,6 +129,209 @@ select.input-text {
  cursor: pointer;
 }

+.time-input-24h {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  width: 100%;
+}
+
+.time-input-24h__select {
+  flex: 1 1 0;
+  min-width: 0;
+  padding-left: 12px;
+  padding-right: 12px;
+  text-align: center;
+  font-variant-numeric: tabular-nums;
+}
+
+.time-input-24h__sep {
+  flex-shrink: 0;
+  font-size: 18px;
+  font-weight: 600;
+  line-height: 1;
+  color: var(--app-text-muted);
+  user-select: none;
+}
+
+.course-dial-section {
+  grid-column: 1 / -1;
+}
+
+.course-dial-tabs {
+  display: flex;
+  gap: 8px;
+  margin-bottom: 12px;
+}
+
+.course-dial-tab {
+  flex: 1;
+  padding: 8px 12px;
+  border-radius: 8px;
+  border: 1px solid var(--app-border-subtle);
+  background: var(--app-btn-secondary-bg);
+  color: var(--app-text-muted);
+  font-size: 14px;
+  font-weight: 600;
+  cursor: pointer;
+  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
+}
+
+.course-dial-tab.is-active {
+  background: var(--app-accent-bg);
+  border-color: var(--app-accent-border);
+  color: var(--app-accent-light);
+}
+
+.course-dial-tab:disabled {
+  opacity: 0.6;
+  cursor: not-allowed;
+}
+
+.course-dial {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  gap: 10px;
+  width: 100%;
+  max-width: 260px;
+  margin: 0 auto;
+}
+
+.course-dial--sm {
+  max-width: 220px;
+}
+
+.course-dial--disabled {
+  opacity: 0.65;
+  pointer-events: none;
+}
+
+.course-dial__step-toolbar {
+  display: flex;
+  gap: 6px;
+  width: 100%;
+}
+
+.course-dial__step-btn {
+  flex: 1;
+  padding: 6px 8px;
+  border-radius: 6px;
+  border: 1px solid var(--app-border-subtle);
+  background: var(--app-surface-alt);
+  color: var(--app-text-muted);
+  font-size: 12px;
+  font-weight: 600;
+  cursor: pointer;
+}
+
+.course-dial__step-btn.is-active {
+  border-color: var(--app-accent-border);
+  background: var(--app-accent-bg);
+  color: var(--app-accent-light);
+}
+
+.course-dial__ring-wrap {
+  width: 100%;
+  touch-action: none;
+}
+
+.course-dial__svg {
+  width: 100%;
+  height: auto;
+  display: block;
+  cursor: pointer;
+  user-select: none;
+}
+
+.course-dial__track {
+  fill: none;
+  stroke: var(--app-border);
+  stroke-width: 2;
+}
+
+.course-dial__tick {
+  stroke: var(--app-text-subtle);
+  stroke-width: 1.5;
+}
+
+.course-dial__label {
+  fill: var(--app-text-muted);
+  font-size: 9px;
+  font-weight: 600;
+  font-variant-numeric: tabular-nums;
+}
+
+.course-dial__needle line {
+  stroke: var(--app-accent-light);
+  stroke-width: 3;
+  stroke-linecap: round;
+}
+
+.course-dial__needle circle {
+  fill: var(--app-accent-light);
+}
+
+.course-dial__center {
+  fill: var(--app-text);
+  font-size: 15px;
+  font-weight: 700;
+  font-variant-numeric: tabular-nums;
+}
+
+.course-dial__hint {
+  margin: 0;
+  font-size: 12px;
+  color: var(--app-text-muted);
+  text-align: center;
+  line-height: 1.4;
+}
+
+.course-dial__error {
+  margin: 0;
+  width: 100%;
+  font-size: 12px;
+  color: #f87171;
+  text-align: center;
+}
+
+.course-dial__input {
+  width: 100%;
+  text-align: center;
+  font-variant-numeric: tabular-nums;
+}
+
+.course-dial__mode-toggle {
+  border: none;
+  background: none;
+  color: var(--app-accent-light);
+  font-size: 13px;
+  font-weight: 500;
+  cursor: pointer;
+  text-decoration: underline;
+  padding: 4px;
+}
+
+@media (prefers-reduced-motion: reduce) {
+  .course-dial__needle {
+    transition: none;
+  }
+}
+
+@media (max-width: 640px) {
+  .course-dial {
+    max-width: min(72vw, 220px);
+  }
+
+  .course-dial--sm {
+    max-width: min(68vw, 200px);
+  }
+
+  .course-dial__label {
+    font-size: 8px;
+  }
+}
+
 .themed-select {
  position: relative;
  width: 100%;
@@ -894,6 +1097,7 @@ html.scheme-dark .themed-select-option.is-selected {
  gap: 12px;
 }

+.profile-field-label,
 .profile-pin-form .input-group label {
  display: block;
  text-align: left;
@@ -1248,7 +1452,7 @@ html.scheme-dark .themed-select-option.is-selected {
  border-radius: var(--app-radius-card);
  padding: 20px;
  display: flex;
-  align-items: center;
+  align-items: flex-start;
  gap: 16px;
  cursor: pointer;
  position: relative;
@@ -1292,10 +1496,65 @@ html.scheme-dark .themed-select-option.is-selected {
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
+  min-width: 0;
 }

 .card-title-row h3 {
  margin: 0;
+  flex: 1 1 8rem;
+  min-width: 0;
+  max-width: 100%;
+}
+
+.card-title-row .role-badge {
+  flex-shrink: 0;
+}
+
+.logbook-card-actions {
+  flex-shrink: 0;
+  align-self: flex-start;
+  display: flex;
+  align-items: center;
+  margin-top: -2px;
+}
+
+.logbook-card-actions .btn-delete {
+  position: static;
+  top: auto;
+  right: auto;
+  opacity: 0;
+}
+
+.logbook-card:hover .logbook-card-actions .btn-delete,
+.logbook-card:focus-within .logbook-card-actions .btn-delete {
+  opacity: 1;
+}
+
+@media (hover: none), (pointer: coarse) {
+  .logbook-card-actions .btn-delete {
+    opacity: 1;
+  }
+}
+
+.logbook-title-editable {
+  cursor: text;
+  border-radius: 4px;
+  transition: background-color 0.15s ease;
+}
+
+.logbook-title-editable:hover {
+  background: var(--app-accent-bg);
+}
+
+.logbook-title-inline-edit {
+  flex: 1 1 8rem;
+  min-width: 0;
+  max-width: 100%;
+  margin: 0;
+  padding: 2px 8px;
+  font-size: 16px;
+  font-weight: 600;
+  line-height: 1.4;
 }

 .card-icon {
@@ -2051,15 +2310,28 @@ html.scheme-dark .themed-select-option.is-selected {
  }

  .logbook-card {
-    flex-wrap: wrap;
+    flex-wrap: nowrap;
    padding: 16px;
    gap: 12px;
  }

+  .logbook-card-actions {
+    margin-top: 0;
+  }
+
+  .logbook-card-actions .btn-delete {
+    opacity: 1;
+  }
+
  .card-meta {
    flex-wrap: wrap;
  }

+  .card-title-row h3,
+  .logbook-title-inline-edit {
+    flex-basis: 100%;
+  }
+
  .card-info h3 {
    white-space: normal;
    word-break: break-word;
@@ -2162,6 +2434,32 @@ html.scheme-dark .themed-select-option.is-selected {
  .track-map-container {
    height: min(360px, 45svh);
  }
+
+  .sails-picker-pills {
+    gap: 4px;
+  }
+
+  .sails-picker-container.is-collapsible .sails-picker-toggle {
+    display: inline-flex;
+  }
+
+  .sail-pill {
+    padding: 3px 8px;
+    font-size: 11px;
+    border-radius: 12px;
+    line-height: 1.2;
+  }
+}
+
+@media (max-width: 480px) {
+  .sails-picker-container.is-collapsible.is-collapsed .sails-picker-pills {
+    max-height: 3.25rem;
+  }
+
+  .sail-pill {
+    padding: 2px 7px;
+    font-size: 10px;
+  }
 }

 /* ========================================== */
@@ -2425,13 +2723,48 @@ html.theme-cupertino .events-scroll-container {
  display: flex;
  flex-direction: column;
  gap: 8px;
-  margin-top: 8px;
+  grid-column: 1 / -1;
+  margin-top: -4px;
 }

 .sails-picker-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
+  position: relative;
+}
+
+.sails-picker-container.is-collapsible.is-collapsed .sails-picker-pills {
+  max-height: 3.75rem;
+  overflow: hidden;
+}
+
+.sails-picker-container.is-collapsible.is-collapsed .sails-picker-pills::after {
+  content: '';
+  position: absolute;
+  bottom: 0;
+  left: 0;
+  right: 0;
+  height: 1.25rem;
+  background: linear-gradient(to bottom, transparent, var(--app-surface, #0f172a));
+  pointer-events: none;
+}
+
+.sails-picker-toggle {
+  display: none;
+  align-items: center;
+  gap: 4px;
+  margin: 4px auto 0;
+  padding: 2px 8px;
+  background: none;
+  border: none;
+  color: var(--app-text-muted, #94a3b8);
+  font-size: 12px;
+  cursor: pointer;
+}
+
+.sails-picker-toggle:hover {
+  color: var(--app-accent, #fbbf24);
 }

 .sail-pill {
@@ -2444,6 +2777,7 @@ html.theme-cupertino .events-scroll-container {
  cursor: pointer;
  user-select: none;
  transition: all 0.2s ease;
+  white-space: nowrap;
 }

 .sail-pill:hover {
@@ -2471,7 +2805,9 @@ html.theme-cupertino .events-scroll-container {
  background: rgba(56, 189, 248, 0.15);
  border-color: #38bdf8;
  color: #38bdf8;
-}.grid-span-2 {
+}
+
+.grid-span-2 {
  grid-column: span 2;
 }

@@ -3791,6 +4127,26 @@ html.theme-cupertino .events-scroll-container {
  border: 1px solid rgba(148, 163, 184, 0.25);
 }

+.backup-panel {
+  text-align: left;
+}
+
+.backup-export-form,
+.backup-import-form {
+  display: flex;
+  flex-direction: column;
+  gap: 16px;
+}
+
+.backup-panel .input-group label {
+  display: block;
+  font-size: 13.5px;
+  color: var(--app-text-muted);
+  margin-bottom: 6px;
+  font-weight: 500;
+  text-align: left;
+}
+
 .backup-panel .backup-section {
  margin-bottom: 28px;
  padding-bottom: 24px;
@@ -15,7 +15,13 @@ import InvitationAcceptance from './components/InvitationAcceptance.tsx'
 import AppTourOverlay from './components/AppTourOverlay.tsx'
 import { AppTourProvider, useAppTour, type AppTab } from './context/AppTourContext.tsx'
 import { UnsavedChangesProvider, useUnsavedChangesContext } from './context/UnsavedChangesContext.tsx'
-import { getActiveMasterKey, logoutUser, checkServerSession } from './services/auth.js'
+import {
+  logoutUser,
+  checkServerSession,
+  hasUnlockedLocalSession,
+  persistSessionUserId
+} from './services/auth.js'
+import AppErrorBoundary from './components/AppErrorBoundary.tsx'
 import { PlausibleEvents, trackPlausibleEvent } from './services/analytics.js'
 import {
  applyAppearanceToDocument,
@@ -208,6 +214,53 @@ function App() {
    }
  }, [])

+  const clearAuthenticatedAppState = useCallback(() => {
+    setIsAuthenticated(false)
+    setActiveLogbookId(null)
+    setActiveLogbookTitle(null)
+    setShowUserProfile(false)
+    setTourSelectedEntryId(null)
+    setDemoHighlightEntryId(null)
+  }, [])
+
+  /** After PWA/bfcache resume, React state may still say "logged in" while the master key is gone. */
+  const enforceUnlockedSession = useCallback(() => {
+    if (isViewerMode || isDemoMode || isAcceptingInvite) return
+    // Require full local session (incl. userId) so API calls are not left headless.
+    if (isAuthenticated && !hasUnlockedLocalSession()) {
+      clearAuthenticatedAppState()
+    }
+  }, [
+    isAuthenticated,
+    isViewerMode,
+    isDemoMode,
+    isAcceptingInvite,
+    clearAuthenticatedAppState
+  ])
+
+  useEffect(() => {
+    enforceUnlockedSession()
+  }, [enforceUnlockedSession])
+
+  useEffect(() => {
+    const onPageShow = (event: PageTransitionEvent) => {
+      if (event.persisted) {
+        enforceUnlockedSession()
+      }
+    }
+    const onVisibility = () => {
+      if (document.visibilityState === 'visible') {
+        enforceUnlockedSession()
+      }
+    }
+    window.addEventListener('pageshow', onPageShow)
+    document.addEventListener('visibilitychange', onVisibility)
+    return () => {
+      window.removeEventListener('pageshow', onPageShow)
+      document.removeEventListener('visibilitychange', onVisibility)
+    }
+  }, [enforceUnlockedSession])
+
  useEffect(() => {
    let cancelled = false

@@ -216,13 +269,12 @@ function App() {
        const session = await checkServerSession()
        if (cancelled) return

-        if (session.authenticated && session.userId) {
-          localStorage.setItem('active_userid', session.userId)
+        if (session.authenticated) {
+          persistSessionUserId(session.userId)
        }

-        const savedUser = localStorage.getItem('active_username')
-        const key = getActiveMasterKey()
-        if (session.authenticated && savedUser && key) {
+        // Cookie alone is insufficient — need in-memory master key, username, and userId for API.
+        if (session.authenticated && hasUnlockedLocalSession()) {
          setIsAuthenticated(true)
          const savedLogbookId = localStorage.getItem('active_logbook_id')
          const savedLogbookTitle = localStorage.getItem('active_logbook_title')
@@ -231,6 +283,7 @@ function App() {
            setActiveLogbookTitle(savedLogbookTitle)
          }
        }
+        // authenticated + crypto but no userId: stay on login (enforceUnlockedSession guards active UI)
      } catch (err) {
        if (!cancelled) {
          console.warn('Session restore failed:', err)
@@ -241,7 +294,7 @@ function App() {
    return () => {
      cancelled = true
    }
-  }, [])
+  }, [clearAuthenticatedAppState])

  useEffect(() => {
    syncRouteFromLocation()
@@ -630,15 +683,17 @@ function App() {

 export default function AppWrapper() {
  return (
-    <DialogProvider>
-      <UnsavedChangesProvider>
-        <AppTourProvider>
-          <PwaUpdatePrompt />
-          <App />
-          <AppTourOverlay />
-        </AppTourProvider>
-        <AppFooter />
-      </UnsavedChangesProvider>
-    </DialogProvider>
+    <AppErrorBoundary>
+      <DialogProvider>
+        <UnsavedChangesProvider>
+          <AppTourProvider>
+            <PwaUpdatePrompt />
+            <App />
+            <AppTourOverlay />
+          </AppTourProvider>
+          <AppFooter />
+        </UnsavedChangesProvider>
+      </DialogProvider>
+    </AppErrorBoundary>
  )
 }
@@ -0,0 +1,42 @@
+import { Component, type ErrorInfo, type ReactNode } from 'react'
+
+interface Props {
+  children: ReactNode
+}
+
+interface State {
+  error: Error | null
+}
+
+export default class AppErrorBoundary extends Component<Props, State> {
+  state: State = { error: null }
+
+  static getDerivedStateFromError(error: Error): State {
+    return { error }
+  }
+
+  componentDidCatch(error: Error, info: ErrorInfo) {
+    console.error('Unhandled app error:', error, info.componentStack)
+  }
+
+  render() {
+    if (!this.state.error) {
+      return this.props.children
+    }
+
+    return (
+      <div className="auth-screen">
+        <div className="auth-card glass" role="alert">
+          <h2 style={{ marginTop: 0 }}>Kapteins Daagbok</h2>
+          <p style={{ color: 'var(--app-text-muted)', lineHeight: 1.5 }}>
+            Die App ist nach dem Neustart in einen fehlerhaften Zustand geraten. Bitte neu laden
+            oder die App vollständig beenden und erneut öffnen.
+          </p>
+          <button type="button" className="btn primary" style={{ width: '100%', marginTop: 16 }} onClick={() => window.location.reload()}>
+            Neu laden
+          </button>
+        </div>
+      </div>
+    )
+  }
+}
@@ -13,6 +13,7 @@ import {
 } from '../services/auth.js'
 import { KeyRound, ShieldAlert, Languages, HelpCircle, UserRound, X } from 'lucide-react'
 import RegistrationDisclaimer from './RegistrationDisclaimer.tsx'
+import DisclaimerModal from './DisclaimerModal.tsx'
 import BetaBadge from './BetaBadge.tsx'

 interface AuthOnboardingProps {
@@ -50,6 +51,7 @@ export default function AuthOnboarding({ onAuthenticated, onOpenDemo }: AuthOnbo

  const [isNewRegistration, setIsNewRegistration] = useState(false)
  const [showDisclaimer, setShowDisclaimer] = useState(false)
+  const [showHelp, setShowHelp] = useState(false)

  const finishAuth = () => {
    if (isNewRegistration) {
@@ -410,6 +412,7 @@ export default function AuthOnboarding({ onAuthenticated, onOpenDemo }: AuthOnbo

  // Render 3: Standard Login / Registration options form
  return (
+    <>
    <div className="auth-card glass">
      <div className="auth-brand">
        <img src="/logo.png" alt="Kapteins Daagbok" className="auth-logo-img" />
@@ -570,15 +573,23 @@ export default function AuthOnboarding({ onAuthenticated, onOpenDemo }: AuthOnbo
      </div>

      <div className="auth-footer">
-        <button className="btn-icon-text" onClick={toggleLanguage}>
+        <button type="button" className="btn-icon-text" onClick={toggleLanguage}>
          <Languages size={18} />
          {i18n.language.startsWith('de') ? 'English' : 'Deutsch'}
        </button>
-        <a href="#help" className="btn-icon-text link-sec">
+        <button
+          type="button"
+          className="btn-icon-text link-sec"
+          onClick={() => setShowHelp(true)}
+          title={t('disclaimer.button_title')}
+          aria-label={t('disclaimer.button_title')}
+        >
          <HelpCircle size={18} />
          {t('auth.help')}
-        </a>
+        </button>
      </div>
    </div>
+    <DisclaimerModal open={showHelp} onClose={() => setShowHelp(false)} />
+    </>
  )
 }
@@ -0,0 +1,285 @@
+import { useCallback, useId, useMemo, useRef, useState } from 'react'
+import { useTranslation } from 'react-i18next'
+import {
+  type CourseOutputMode,
+  type CourseStep,
+  dialDegreesToStorageValue,
+  formatCourseAngle,
+  formatCourseDisplay,
+  isCardinalDirection,
+  loadCourseDialStep,
+  parseCourseAngle,
+  pointerAngleToDegrees,
+  resolveCourseOutputMode,
+  saveCourseDialStep,
+  snapDegrees,
+  valueToDialDegrees
+} from '../utils/courseAngle.js'
+
+interface CourseDialInputProps {
+  value: string
+  onChange: (value: string) => void
+  disabled?: boolean
+  step?: CourseStep
+  allowCardinal?: boolean
+  displayMode?: 'degrees' | 'cardinal' | 'auto'
+  size?: 'md' | 'sm'
+  'aria-label': string
+  id?: string
+}
+
+const TICK_DEGREES = [0, 30, 60, 90, 120, 150, 180, 210, 240, 270, 300, 330]
+
+function polarPoint(degrees: number, radius: number): { x: number; y: number } {
+  const rad = (degrees * Math.PI) / 180
+  return {
+    x: 100 + Math.sin(rad) * radius,
+    y: 100 - Math.cos(rad) * radius
+  }
+}
+
+export default function CourseDialInput({
+  value,
+  onChange,
+  disabled = false,
+  step: stepProp,
+  allowCardinal = false,
+  displayMode = 'degrees',
+  size = 'md',
+  'aria-label': ariaLabel,
+  id: idProp
+}: CourseDialInputProps) {
+  const { t } = useTranslation()
+  const generatedId = useId()
+  const inputId = idProp ?? `${generatedId}-input`
+  const svgRef = useRef<SVGSVGElement>(null)
+  const [step, setStep] = useState<CourseStep>(() => stepProp ?? loadCourseDialStep())
+  const [inputDraft, setInputDraft] = useState<string | null>(null)
+  const [inputError, setInputError] = useState<string | null>(null)
+  const [outputModeOverride, setOutputModeOverride] = useState<CourseOutputMode | null>(null)
+
+  const effectiveStep = stepProp ?? step
+  const outputMode =
+    outputModeOverride ??
+    resolveCourseOutputMode(value, displayMode, allowCardinal)
+
+  const dialDegrees = useMemo(
+    () => snapDegrees(valueToDialDegrees(value, allowCardinal), effectiveStep),
+    [value, allowCardinal, effectiveStep]
+  )
+
+  const centerLabel = useMemo(
+    () => formatCourseDisplay(value, allowCardinal),
+    [value, allowCardinal]
+  )
+
+  const tickLabel = useCallback(
+    (degrees: number) => {
+      if (degrees === 0) return t('logs.compass_n')
+      if (degrees === 90) return t('logs.compass_e')
+      if (degrees === 180) return t('logs.compass_s')
+      if (degrees === 270) return t('logs.compass_w')
+      return String(degrees).padStart(3, '0')
+    },
+    [t]
+  )
+
+  const applyDegrees = useCallback(
+    (degrees: number) => {
+      onChange(dialDegreesToStorageValue(degrees, outputMode, effectiveStep))
+      setInputDraft(null)
+      setInputError(null)
+    },
+    [onChange, outputMode, effectiveStep]
+  )
+
+  const updateFromPointer = useCallback(
+    (clientX: number, clientY: number) => {
+      const svg = svgRef.current
+      if (!svg || disabled) return
+      const rect = svg.getBoundingClientRect()
+      const cx = rect.left + rect.width / 2
+      const cy = rect.top + rect.height / 2
+      const raw = pointerAngleToDegrees(clientX, clientY, cx, cy)
+      applyDegrees(raw)
+    },
+    [applyDegrees, disabled]
+  )
+
+  const handlePointerDown = (e: React.PointerEvent<SVGSVGElement>) => {
+    if (disabled) return
+    e.preventDefault()
+    e.currentTarget.setPointerCapture(e.pointerId)
+    updateFromPointer(e.clientX, e.clientY)
+  }
+
+  const handlePointerMove = (e: React.PointerEvent<SVGSVGElement>) => {
+    if (disabled || !e.currentTarget.hasPointerCapture(e.pointerId)) return
+    updateFromPointer(e.clientX, e.clientY)
+  }
+
+  const handlePointerUp = (e: React.PointerEvent<SVGSVGElement>) => {
+    if (e.currentTarget.hasPointerCapture(e.pointerId)) {
+      e.currentTarget.releasePointerCapture(e.pointerId)
+    }
+  }
+
+  const handleInputChange = (e: React.ChangeEvent<HTMLInputElement>) => {
+    setInputDraft(e.target.value)
+  }
+
+  const commitInput = () => {
+    const draft = (inputDraft ?? value).trim()
+    setInputDraft(null)
+    if (!draft) {
+      onChange('')
+      setInputError(null)
+      return
+    }
+    if (allowCardinal && outputMode === 'cardinal' && isCardinalDirection(draft)) {
+      onChange(draft.toUpperCase())
+      setInputError(null)
+      return
+    }
+    const parsed = parseCourseAngle(draft)
+    if (parsed === null) {
+      setInputError(t('logs.course_invalid'))
+      return
+    }
+    onChange(formatCourseAngle(snapDegrees(parsed, effectiveStep)))
+    setInputError(null)
+  }
+
+  const handleInputKeyDown = (e: React.KeyboardEvent<HTMLInputElement>) => {
+    if (e.key === 'Enter') {
+      e.preventDefault()
+      commitInput()
+      return
+    }
+    if (e.key === 'ArrowUp' || e.key === 'ArrowDown') {
+      e.preventDefault()
+      const base = parseCourseAngle(value) ?? dialDegrees
+      const delta = e.key === 'ArrowUp' ? effectiveStep : -effectiveStep
+      applyDegrees(base + delta)
+    }
+  }
+
+  const handleStepChange = (next: CourseStep) => {
+    if (stepProp !== undefined) return
+    setStep(next)
+    saveCourseDialStep(next)
+    const parsed = parseCourseAngle(value)
+    if (parsed !== null) {
+      onChange(formatCourseAngle(snapDegrees(parsed, next)))
+    }
+  }
+
+  const toggleOutputMode = () => {
+    const next: CourseOutputMode = outputMode === 'cardinal' ? 'degrees' : 'cardinal'
+    setOutputModeOverride(next)
+    const deg = valueToDialDegrees(value, allowCardinal)
+    onChange(dialDegreesToStorageValue(deg, next, effectiveStep))
+  }
+
+  const inputValue = inputDraft ?? value
+  const sliderNow = dialDegrees
+
+  return (
+    <div
+      className={`course-dial course-dial--${size}${disabled ? ' course-dial--disabled' : ''}`}
+    >
+      {!stepProp && (
+        <div className="course-dial__step-toolbar" role="group" aria-label={t('logs.course_dial_step_label')}>
+          {([1, 5, 10] as const).map((s) => (
+            <button
+              key={s}
+              type="button"
+              className={`course-dial__step-btn${effectiveStep === s ? ' is-active' : ''}`}
+              onClick={() => handleStepChange(s)}
+              disabled={disabled}
+              aria-pressed={effectiveStep === s}
+            >
+              {s === 1 ? t('logs.course_step_fine') : s === 5 ? t('logs.course_step_medium') : t('logs.course_step_coarse')}
+            </button>
+          ))}
+        </div>
+      )}
+
+      <div
+        className="course-dial__ring-wrap"
+        role="slider"
+        aria-label={ariaLabel}
+        aria-valuemin={0}
+        aria-valuemax={360}
+        aria-valuenow={sliderNow}
+        aria-disabled={disabled}
+      >
+        <svg
+          ref={svgRef}
+          className="course-dial__svg"
+          viewBox="0 0 200 200"
+          onPointerDown={handlePointerDown}
+          onPointerMove={handlePointerMove}
+          onPointerUp={handlePointerUp}
+          onPointerCancel={handlePointerUp}
+        >
+          <circle className="course-dial__track" cx="100" cy="100" r="88" />
+          {TICK_DEGREES.map((deg) => {
+            const inner = polarPoint(deg, 76)
+            const outer = polarPoint(deg, 88)
+            const label = polarPoint(deg, 64)
+            return (
+              <g key={deg}>
+                <line className="course-dial__tick" x1={inner.x} y1={inner.y} x2={outer.x} y2={outer.y} />
+                <text className="course-dial__label" x={label.x} y={label.y} textAnchor="middle" dominantBaseline="middle">
+                  {tickLabel(deg)}
+                </text>
+              </g>
+            )
+          })}
+          <g className="course-dial__needle" transform={`rotate(${dialDegrees} 100 100)`}>
+            <line x1="100" y1="100" x2="100" y2="28" />
+            <circle cx="100" cy="100" r="6" />
+          </g>
+          <text className="course-dial__center" x="100" y="100" textAnchor="middle" dominantBaseline="middle">
+            {centerLabel}
+          </text>
+        </svg>
+      </div>
+
+      <p className="course-dial__hint">{t('logs.course_dial_hint')}</p>
+
+      <input
+        id={inputId}
+        type="text"
+        inputMode="numeric"
+        className="input-text course-dial__input"
+        value={inputValue}
+        onChange={handleInputChange}
+        onBlur={commitInput}
+        onKeyDown={handleInputKeyDown}
+        disabled={disabled}
+        placeholder={
+          outputMode === 'cardinal'
+            ? t('logs.course_placeholder_cardinal')
+            : t('logs.course_placeholder_degrees')
+        }
+        aria-label={ariaLabel}
+        aria-invalid={inputError ? true : undefined}
+      />
+
+      {inputError && <p className="course-dial__error">{inputError}</p>}
+
+      {allowCardinal && displayMode === 'auto' && (
+        <button
+          type="button"
+          className="course-dial__mode-toggle"
+          onClick={toggleOutputMode}
+          disabled={disabled}
+        >
+          {outputMode === 'cardinal' ? t('logs.wind_mode_degrees') : t('logs.wind_mode_cardinal')}
+        </button>
+      )}
+    </div>
+  )
+}
@@ -0,0 +1,58 @@
+import { useId, useMemo } from 'react'
+import { joinTimeHHMM, splitTimeHHMM } from '../utils/logEntryPayload.js'
+
+const HOURS = Array.from({ length: 24 }, (_, i) => String(i).padStart(2, '0'))
+const MINUTES = Array.from({ length: 60 }, (_, i) => String(i).padStart(2, '0'))
+
+interface EventTimeInput24hProps {
+  value: string
+  onChange: (value: string) => void
+  disabled?: boolean
+  'aria-label'?: string
+}
+
+export default function EventTimeInput24h({
+  value,
+  onChange,
+  disabled = false,
+  'aria-label': ariaLabel
+}: EventTimeInput24hProps) {
+  const baseId = useId()
+  const { hours, minutes } = useMemo(() => splitTimeHHMM(value), [value])
+
+  return (
+    <div className="time-input-24h">
+      <select
+        id={`${baseId}-hours`}
+        className="input-text time-input-24h__select"
+        value={hours}
+        onChange={(e) => onChange(joinTimeHHMM(e.target.value, minutes))}
+        disabled={disabled}
+        aria-label={ariaLabel ? `${ariaLabel} (h)` : undefined}
+      >
+        {HOURS.map((hour) => (
+          <option key={hour} value={hour}>
+            {hour}
+          </option>
+        ))}
+      </select>
+      <span className="time-input-24h__sep" aria-hidden="true">
+        :
+      </span>
+      <select
+        id={`${baseId}-minutes`}
+        className="input-text time-input-24h__select"
+        value={minutes}
+        onChange={(e) => onChange(joinTimeHHMM(hours, e.target.value))}
+        disabled={disabled}
+        aria-label={ariaLabel ? `${ariaLabel} (min)` : undefined}
+      >
+        {MINUTES.map((minute) => (
+          <option key={minute} value={minute}>
+            {minute}
+          </option>
+        ))}
+      </select>
+    </div>
+  )
+}
@@ -6,7 +6,7 @@ import { getLogbookKey } from '../services/logbookKeys.js'
 import { encryptJson, decryptJson } from '../services/crypto.js'
 import { syncLogbook } from '../services/sync.js'
 import { downloadLogbookPagePdf } from '../services/pdfExport.js'
-import { FileText, Save, ChevronLeft, Check, Compass, Plus, Trash2, MapPin, CloudSun, Clock, Download, Upload, Pencil, X } from 'lucide-react'
+import { FileText, Save, ChevronLeft, Check, Compass, Plus, Trash2, MapPin, CloudSun, Clock, Download, Upload, Pencil, X, ChevronDown, ChevronUp } from 'lucide-react'
 import PhotoCapture from './PhotoCapture.tsx'
 import SignatureSection from './SignatureSection.tsx'
 import TrackMap from './TrackMap.tsx'
@@ -22,7 +22,10 @@ import {
  hasAnySignature
 } from '../utils/signatures.js'
 import type { SignatureValue } from '../types/signatures.js'
-import { buildLogEntryPayload, sortLogEventsByTime, normalizeLogEvent, logEventsEqual, type LogEventPayload } from '../utils/logEntryPayload.js'
+import { buildLogEntryPayload, sortLogEventsByTime, normalizeLogEvent, logEventsEqual, currentLocalTimeHHMM, isValidTimeHHMM, type LogEventPayload } from '../utils/logEntryPayload.js'
+import EventTimeInput24h from './EventTimeInput24h.tsx'
+import CourseDialInput from './CourseDialInput.tsx'
+import { degreesToCardinal } from '../utils/courseAngle.js'
 import { hashEntryForSigning } from '../utils/entryCanonicalHash.js'
 import { signLogEntry } from '../services/entrySigning.js'
 import { getLogbookAccess } from '../services/logbookAccess.js'
@@ -162,7 +165,7 @@ export default function LogEntryEditor({
  const [events, setEvents] = useState<LogEvent[]>([])

  // Add Event Form State
-  const [evTime, setEvTime] = useState('')
+  const [evTime, setEvTime] = useState(() => currentLocalTimeHHMM())
  const [evMgk, setEvMgk] = useState('')
  const [evRwk, setEvRwk] = useState('')
  const [evWindPressure, setEvWindPressure] = useState('')
@@ -173,12 +176,14 @@ export default function LogEntryEditor({
  const [evCurrent, setEvCurrent] = useState('')
  const [evHeel, setEvHeel] = useState('')
  const [evSailsOrMotor, setEvSailsOrMotor] = useState('')
+  const [sailsPickerExpanded, setSailsPickerExpanded] = useState(false)
  const [evLogReading, setEvLogReading] = useState('')
  const [evDistance, setEvDistance] = useState('')
  const [evGpsLat, setEvGpsLat] = useState('')
  const [evGpsLng, setEvGpsLng] = useState('')
  const [evRemarks, setEvRemarks] = useState('')
  const [evLocationName, setEvLocationName] = useState('')
+  const [activeCourseTab, setActiveCourseTab] = useState<'mgk' | 'rwk'>('mgk')

  const [loading, setLoading] = useState(false)
  const [saving, setSaving] = useState(false)
@@ -813,10 +818,7 @@ export default function LogEntryEditor({
      
      // Calculate wind compass direction sector
      if (wind?.deg !== undefined) {
-        const deg = wind.deg
-        const sectors = ['N', 'NNE', 'NE', 'ENE', 'E', 'ESE', 'SE', 'SSE', 'S', 'SSW', 'SW', 'WSW', 'W', 'WNW', 'NW', 'NNW']
-        const index = Math.round(deg / 22.5) % 16
-        setEvWindDirection(sectors[index])
+        setEvWindDirection(degreesToCardinal(wind.deg))
      }

      if (data.weather && Array.isArray(data.weather) && data.weather[0]) {
@@ -841,6 +843,9 @@ export default function LogEntryEditor({
    ? ['Großsegel', 'Genua', 'Fock', 'Spinnaker', 'Gennaker']
    : ['Mainsail', 'Genoa', 'Jib', 'Spinnaker', 'Gennaker']

+  const eventSailOptions = yachtSails.length > 0 ? yachtSails : defaultSails
+  const showSailsPickerToggle = eventSailOptions.length + 1 > 6
+
  const toggleSailOrMotor = (item: string) => {
    let currentItems = evSailsOrMotor
      .split(/\s*(?:\+|\bplus\b|,)\s*/i)
@@ -864,8 +869,17 @@ export default function LogEntryEditor({
    return currentItems.includes(item.toLowerCase())
  }

+  const motorPropulsionLabel = t('logs.motor_propulsion')
+  const sortedEventSailOptions = [...eventSailOptions].sort((a, b) => {
+    const aActive = isItemActive(a)
+    const bActive = isItemActive(b)
+    if (aActive === bActive) return 0
+    return aActive ? -1 : 1
+  })
+  const isMotorActive = isItemActive(motorPropulsionLabel)
+
  const clearEventForm = () => {
-    setEvTime('')
+    setEvTime(currentLocalTimeHHMM())
    setEvMgk('')
    setEvRwk('')
    setEvWindPressure('')
@@ -883,6 +897,7 @@ export default function LogEntryEditor({
    setEvRemarks('')
    setEvLocationName('')
    setEditingEventIndex(null)
+    setSailsPickerExpanded(false)
  }

  const fillEventForm = (ev: LogEvent) => {
@@ -926,7 +941,7 @@ export default function LogEntryEditor({

  const handleSaveEvent = async (e: React.FormEvent) => {
    e.preventDefault()
-    if (readOnly || !evTime) return
+    if (readOnly || !isValidTimeHHMM(evTime)) return

    const eventData = buildEventFromForm()
    const isEdit = editingEventIndex !== null
@@ -1368,36 +1383,46 @@ export default function LogEntryEditor({
                  <Clock size={12} style={{ display: 'inline', marginRight: 4 }} />
                  {t('logs.event_time')} *
                </label>
-                <input
-                  type="time"
-                  className="input-text"
+                <EventTimeInput24h
                  value={evTime}
-                  onChange={(e) => setEvTime(e.target.value)}
+                  onChange={setEvTime}
                  disabled={saving}
+                  aria-label={t('logs.event_time')}
                />
              </div>

-              <div className="input-group">
-                <label>{t('logs.event_mgk')}</label>
-                <input
-                  type="text"
-                  placeholder="e.g. 180"
-                  className="input-text"
-                  value={evMgk}
-                  onChange={(e) => setEvMgk(e.target.value)}
-                  disabled={saving}
-                />
-              </div>
-
-              <div className="input-group">
-                <label>{t('logs.event_rwk')}</label>
-                <input
-                  type="text"
-                  placeholder="e.g. 185"
-                  className="input-text"
-                  value={evRwk}
-                  onChange={(e) => setEvRwk(e.target.value)}
+              <div className="input-group course-dial-section">
+                <label>
+                  <Compass size={12} style={{ display: 'inline', marginRight: 4 }} />
+                  {t('logs.event_course_section')}
+                </label>
+                <div className="course-dial-tabs" role="tablist" aria-label={t('logs.event_course_section')}>
+                  <button
+                    type="button"
+                    role="tab"
+                    aria-selected={activeCourseTab === 'mgk'}
+                    className={`course-dial-tab${activeCourseTab === 'mgk' ? ' is-active' : ''}`}
+                    onClick={() => setActiveCourseTab('mgk')}
+                    disabled={saving}
+                  >
+                    {t('logs.course_tab_mgk')}
+                  </button>
+                  <button
+                    type="button"
+                    role="tab"
+                    aria-selected={activeCourseTab === 'rwk'}
+                    className={`course-dial-tab${activeCourseTab === 'rwk' ? ' is-active' : ''}`}
+                    onClick={() => setActiveCourseTab('rwk')}
+                    disabled={saving}
+                  >
+                    {t('logs.course_tab_rwk')}
+                  </button>
+                </div>
+                <CourseDialInput
+                  value={activeCourseTab === 'mgk' ? evMgk : evRwk}
+                  onChange={activeCourseTab === 'mgk' ? setEvMgk : setEvRwk}
                  disabled={saving}
+                  aria-label={activeCourseTab === 'mgk' ? t('logs.event_mgk') : t('logs.event_rwk')}
                />
              </div>

@@ -1476,15 +1501,15 @@ export default function LogEntryEditor({
            </div>

            <div className="form-grid mb-4">
-              <div className="input-group">
+              <div className="input-group course-dial-section">
                <label>{t('logs.event_wind_direction')}</label>
-                <input
-                  type="text"
-                  placeholder="e.g. NNE"
-                  className="input-text"
+                <CourseDialInput
                  value={evWindDirection}
-                  onChange={(e) => setEvWindDirection(e.target.value)}
+                  onChange={setEvWindDirection}
                  disabled={saving || weatherLoading}
+                  allowCardinal
+                  displayMode="auto"
+                  aria-label={t('logs.event_wind_direction')}
                />
              </div>

@@ -1548,25 +1573,6 @@ export default function LogEntryEditor({
                  onChange={(e) => setEvSailsOrMotor(e.target.value)}
                  disabled={saving}
                />
-                <div className="sails-picker-container">
-                  <div className="sails-picker-pills">
-                    {(yachtSails.length > 0 ? yachtSails : defaultSails).map((sail) => (
-                      <span
-                        key={sail}
-                        className={`sail-pill ${isItemActive(sail) ? 'active' : ''}`}
-                        onClick={() => toggleSailOrMotor(sail)}
-                      >
-                        {sail}
-                      </span>
-                    ))}
-                    <span
-                      className={`sail-pill motor-pill ${isItemActive(t('logs.motor_propulsion')) ? 'active' : ''}`}
-                      onClick={() => toggleSailOrMotor(t('logs.motor_propulsion'))}
-                    >
-                      {t('logs.motor_propulsion')}
-                    </span>
-                  </div>
-                </div>
              </div>

              <div className="input-group">
@@ -1581,7 +1587,63 @@ export default function LogEntryEditor({
                />
              </div>

-              <div className="input-group" style={{ gridColumn: 'span 2' }}>
+              <div
+                className={[
+                  'sails-picker-container grid-span-2',
+                  showSailsPickerToggle ? 'is-collapsible' : '',
+                  showSailsPickerToggle && !sailsPickerExpanded ? 'is-collapsed' : '',
+                ].filter(Boolean).join(' ')}
+              >
+                <div className="sails-picker-pills">
+                  {isMotorActive && (
+                    <span
+                      className={`sail-pill motor-pill active`}
+                      onClick={() => toggleSailOrMotor(motorPropulsionLabel)}
+                    >
+                      {motorPropulsionLabel}
+                    </span>
+                  )}
+                  {sortedEventSailOptions.map((sail) => (
+                    <span
+                      key={sail}
+                      className={`sail-pill ${isItemActive(sail) ? 'active' : ''}`}
+                      onClick={() => toggleSailOrMotor(sail)}
+                    >
+                      {sail}
+                    </span>
+                  ))}
+                  {!isMotorActive && (
+                    <span
+                      className="sail-pill motor-pill"
+                      onClick={() => toggleSailOrMotor(motorPropulsionLabel)}
+                    >
+                      {motorPropulsionLabel}
+                    </span>
+                  )}
+                </div>
+                {showSailsPickerToggle && (
+                  <button
+                    type="button"
+                    className="sails-picker-toggle"
+                    onClick={() => setSailsPickerExpanded((prev) => !prev)}
+                    aria-expanded={sailsPickerExpanded}
+                  >
+                    {sailsPickerExpanded ? (
+                      <>
+                        <ChevronUp size={14} aria-hidden="true" />
+                        {t('logs.sails_picker_show_less')}
+                      </>
+                    ) : (
+                      <>
+                        <ChevronDown size={14} aria-hidden="true" />
+                        {t('logs.sails_picker_show_more')}
+                      </>
+                    )}
+                  </button>
+                )}
+              </div>
+
+              <div className="input-group grid-span-2">
                <label>{t('logs.event_remarks')}</label>
                <input
                  type="text"
@@ -1611,7 +1673,7 @@ export default function LogEntryEditor({
                type="button"
                className="btn secondary"
                onClick={handleSaveEvent}
-                disabled={saving || !evTime}
+                disabled={saving || !isValidTimeHHMM(evTime)}
                style={{ width: 'auto', padding: '10px 20px', display: 'flex' }}
              >
                {editingEventIndex !== null ? <Save size={16} /> : <Plus size={16} />}
@@ -12,6 +12,7 @@ import {
  type LogbookBackupPreview
 } from '../services/logbookBackup.js'
 import { PlausibleEvents, trackPlausibleEvent } from '../services/analytics.js'
+import { formatAppDateTime } from '../utils/dateTimeFormat.js'

 interface LogbookBackupPanelProps {
  logbookId: string
@@ -41,7 +42,7 @@ function mapBackupError(code: string, t: (key: string) => string): string {
 }

 export default function LogbookBackupPanel({ logbookId, onRestored }: LogbookBackupPanelProps) {
-  const { t } = useTranslation()
+  const { t, i18n } = useTranslation()
  const { showConfirm } = useDialog()
  const fileInputRef = useRef<HTMLInputElement>(null)

@@ -334,7 +335,7 @@ export default function LogbookBackupPanel({ logbookId, onRestored }: LogbookBac
            </ul>
            <p className="text-muted backup-preview-date">
              {t('settings.backup_exported_at', {
-                date: new Date(importPreview.exportedAt).toLocaleString()
+                date: formatAppDateTime(importPreview.exportedAt, i18n.language)
              })}
            </p>
          </div>
@@ -1,8 +1,8 @@
-import React, { useState, useEffect } from 'react'
+import React, { useState, useEffect, useRef } from 'react'
 import { useTranslation } from 'react-i18next'
 import { useLiveQuery } from 'dexie-react-hooks'
 import { db } from '../services/db.js'
-import { fetchLogbooks, createLogbook, deleteLogbook, type DecryptedLogbook } from '../services/logbook.js'
+import { fetchLogbooks, createLogbook, deleteLogbook, updateLogbookTitle, type DecryptedLogbook } from '../services/logbook.js'
 import LogbookRoleBadge from './LogbookRoleBadge.tsx'
 import BetaBadge from './BetaBadge.tsx'
 import { PlausibleEvents, trackPlausibleEvent } from '../services/analytics.js'
@@ -23,6 +23,9 @@ export default function LogbookDashboard({ onSelectLogbook, onLogout, onOpenProf
  const { showConfirm } = useDialog()
  const [logbooks, setLogbooks] = useState<DecryptedLogbook[]>([])
  const [newTitle, setNewTitle] = useState('')
+  const [editingLogbookId, setEditingLogbookId] = useState<string | null>(null)
+  const [editingTitleDraft, setEditingTitleDraft] = useState('')
+  const titleInputRef = useRef<HTMLInputElement>(null)
  const [loading, setLoading] = useState(false)
  const [refreshing, setRefreshing] = useState(false)
  const [error, setError] = useState<string | null>(null)
@@ -99,6 +102,49 @@ export default function LogbookDashboard({ onSelectLogbook, onLogout, onOpenProf
    }
  }

+  useEffect(() => {
+    if (editingLogbookId) {
+      titleInputRef.current?.focus()
+      titleInputRef.current?.select()
+    }
+  }, [editingLogbookId])
+
+  const startTitleEdit = (lb: DecryptedLogbook, e: React.MouseEvent) => {
+    e.stopPropagation()
+    setEditingLogbookId(lb.id)
+    setEditingTitleDraft(lb.title)
+  }
+
+  const cancelTitleEdit = () => {
+    setEditingLogbookId(null)
+    setEditingTitleDraft('')
+  }
+
+  const commitTitleEdit = async (id: string) => {
+    if (editingLogbookId !== id) return
+
+    const lb = logbooks.find((item) => item.id === id)
+    const trimmedTitle = editingTitleDraft.trim()
+    cancelTitleEdit()
+
+    if (!lb || !trimmedTitle || trimmedTitle === lb.title.trim()) return
+
+    setLoading(true)
+    setError(null)
+    try {
+      await updateLogbookTitle(id, trimmedTitle)
+      setLogbooks((prev) =>
+        prev.map((item) =>
+          item.id === id ? { ...item, title: trimmedTitle, updatedAt: new Date().toISOString() } : item
+        )
+      )
+    } catch (err: any) {
+      setError(err.message || 'Failed to update logbook title')
+    } finally {
+      setLoading(false)
+    }
+  }
+
  const handleLogout = () => {
    void logoutUser()
    onLogout()
@@ -112,7 +158,10 @@ export default function LogbookDashboard({ onSelectLogbook, onLogout, onOpenProf
  const ownedLogbooks = logbooks.filter((lb) => !lb.isShared)
  const sharedLogbooks = logbooks.filter((lb) => lb.isShared)

-  const renderLogbookCard = (lb: DecryptedLogbook) => (
+  const renderLogbookCard = (lb: DecryptedLogbook) => {
+    const isEditingTitle = editingLogbookId === lb.id
+
+    return (
    <div
      key={lb.id}
      className={`logbook-card glass${lb.isShared ? ' logbook-card--shared' : ''}`}
@@ -124,7 +173,36 @@ export default function LogbookDashboard({ onSelectLogbook, onLogout, onOpenProf

      <div className="card-info">
        <div className="card-title-row">
-          <h3>{lb.title}</h3>
+          {isEditingTitle ? (
+            <input
+              ref={titleInputRef}
+              type="text"
+              className="logbook-title-inline-edit input-text"
+              value={editingTitleDraft}
+              onChange={(e) => setEditingTitleDraft(e.target.value)}
+              onClick={(e) => e.stopPropagation()}
+              onKeyDown={(e) => {
+                if (e.key === 'Enter') {
+                  e.preventDefault()
+                  void commitTitleEdit(lb.id)
+                } else if (e.key === 'Escape') {
+                  e.preventDefault()
+                  cancelTitleEdit()
+                }
+              }}
+              onBlur={() => void commitTitleEdit(lb.id)}
+              disabled={loading}
+              aria-label={t('dashboard.edit_title')}
+            />
+          ) : (
+            <h3
+              className={lb.isShared ? undefined : 'logbook-title-editable'}
+              onClick={lb.isShared ? undefined : (e) => startTitleEdit(lb, e)}
+              title={lb.isShared ? undefined : t('dashboard.edit_title')}
+            >
+              {lb.title}
+            </h3>
+          )}
          <LogbookRoleBadge role={lb.accessRole} />
        </div>
        <div className="card-meta">
@@ -144,16 +222,22 @@ export default function LogbookDashboard({ onSelectLogbook, onLogout, onOpenProf
        </div>
      </div>

-      <button
-        className="btn-delete"
-        onClick={(e) => handleDelete(lb.id, e)}
-        title={t('dashboard.delete_btn')}
-        style={{ visibility: lb.isShared ? 'hidden' : 'visible' }}
-      >
-        <Trash2 size={18} />
-      </button>
+      {!lb.isShared && (
+        <div className="logbook-card-actions">
+          <button
+            type="button"
+            className="btn-delete"
+            onClick={(e) => handleDelete(lb.id, e)}
+            title={t('dashboard.delete_btn')}
+            aria-label={t('dashboard.delete_btn')}
+          >
+            <Trash2 size={18} />
+          </button>
+        </div>
+      )}
    </div>
-  )
+    )
+  }

  const renderLogbookSection = (
    title: string,
@@ -2,6 +2,7 @@ import { useState } from 'react'
 import { useTranslation } from 'react-i18next'
 import { Fingerprint, Loader2, AlertTriangle } from 'lucide-react'
 import type { PasskeySignature } from '../types/signatures.js'
+import { formatAppDateTime } from '../utils/dateTimeFormat.js'

 interface PasskeySignButtonProps {
  label: string
@@ -42,9 +43,7 @@ export default function PasskeySignButton({
    }
  }

-  const formattedDate = signature
-    ? new Date(signature.signedAt).toLocaleString(i18n.language === 'de' ? 'de-DE' : 'en-GB')
-    : ''
+  const formattedDate = signature ? formatAppDateTime(signature.signedAt, i18n.language) : ''

  return (
    <div className="passkey-sign-block">
@@ -56,7 +56,7 @@ export default function PushNotificationSettings() {
        trackPlausibleEvent(PlausibleEvents.PUSH_DISABLED)
      }
    } catch (err: unknown) {
-      const message = err instanceof Error ? err.message : t('settings.push_error')
+      const message = err instanceof Error ? err.message : t('profile.push_error')
      showAlert(message)
      void loadPrefs()
    } finally {
@@ -69,10 +69,10 @@ export default function PushNotificationSettings() {
      <div className="member-editor-card glass mt-4">
        <div style={{ display: 'flex', alignItems: 'center', gap: '8px', marginBottom: '12px' }}>
          <BellOff size={20} style={{ color: '#94a3b8' }} />
-          <h3 style={{ margin: 0, color: '#94a3b8', fontSize: '16px' }}>{t('settings.push_title')}</h3>
+          <h3 style={{ margin: 0, color: '#94a3b8', fontSize: '16px' }}>{t('profile.push_title')}</h3>
        </div>
        <p className="text-muted" style={{ fontSize: '13.5px', lineHeight: '145%', margin: 0 }}>
-          {t('settings.push_unsupported')}
+          {t('profile.push_unsupported')}
        </p>
      </div>
    )
@@ -83,23 +83,23 @@ export default function PushNotificationSettings() {
      <div style={{ display: 'flex', alignItems: 'center', gap: '8px', marginBottom: '12px' }}>
        <Bell size={20} style={{ color: 'var(--app-accent-light)' }} />
        <h3 style={{ margin: 0, color: 'var(--app-accent-light)', fontSize: '16px' }}>
-          {t('settings.push_title')}
+          {t('profile.push_title')}
        </h3>
      </div>

      <p className="text-muted" style={{ fontSize: '13.5px', lineHeight: '145%', margin: '0 0 16px 0' }}>
-        {t('settings.push_desc')}
+        {t('profile.push_desc')}
      </p>

      {iosNeedsInstall && (
        <p className="text-muted" style={{ fontSize: '13px', margin: '0 0 12px 0' }}>
-          {t('settings.push_ios_install_hint')}
+          {t('profile.push_ios_install_hint')}
        </p>
      )}

      {permission === 'denied' && (
        <p style={{ fontSize: '13px', color: '#f87171', margin: '0 0 12px 0' }}>
-          {t('settings.push_denied_hint')}
+          {t('profile.push_denied_hint')}
        </p>
      )}

@@ -122,12 +122,12 @@ export default function PushNotificationSettings() {
          disabled={loading || toggling || iosNeedsInstall}
          style={{ width: '18px', height: '18px', cursor: 'inherit' }}
        />
-        <span>{t('settings.push_enable')}</span>
+        <span>{t('profile.push_enable')}</span>
      </label>

      {enabled && permission === 'granted' && (
        <p className="text-muted" style={{ fontSize: '12px', margin: '12px 0 0 0' }}>
-          {t('settings.push_active')}
+          {t('profile.push_active')}
        </p>
      )}
    </div>
@@ -1,14 +1,9 @@
 import React, { useState, useEffect } from 'react'
 import { useTranslation } from 'react-i18next'
-import { Settings as SettingsIcon, Save, Check, Users, Trash2, Copy, Link as LinkIcon, Compass } from 'lucide-react'
+import { Settings as SettingsIcon, Check, Users, Trash2, Copy, Link as LinkIcon } from 'lucide-react'
 import { ensureLogbookKey } from '../services/logbookKeys.js'
 import LogbookBackupPanel from './LogbookBackupPanel.tsx'
-import PwaInstallPrompt from './PwaInstallPrompt.tsx'
-import PushNotificationSettings from './PushNotificationSettings.tsx'
 import { useDialog } from './ModalDialog.tsx'
-import { notifyAppearanceChanged } from '../services/appearance.js'
-import ThemedSelect from './ThemedSelect.tsx'
-import { useAppTour } from '../context/AppTourContext.tsx'
 import { PlausibleEvents, trackPlausibleEvent } from '../services/analytics.js'
 import { apiFetch } from '../services/api.js'

@@ -25,7 +20,6 @@ interface Collaborator {
  createdAt: string
 }

-// Convert ArrayBuffer to Hex String for URL fragment
 const bufferToHex = (buffer: ArrayBuffer): string => {
  return Array.from(new Uint8Array(buffer))
    .map(b => b.toString(16).padStart(2, '0'))
@@ -35,14 +29,7 @@ const bufferToHex = (buffer: ArrayBuffer): string => {
 export default function SettingsForm({ logbookId, onLogbookRestored }: SettingsFormProps) {
  const { t } = useTranslation()
  const { showConfirm, showAlert } = useDialog()
-  const { restartTour } = useAppTour()
-  const [apiKey, setApiKey] = useState(localStorage.getItem('owm_api_key') || '')
-  const [theme, setTheme] = useState(localStorage.getItem('active_theme') || 'auto')
-  const [colorScheme, setColorScheme] = useState(localStorage.getItem('active_color_scheme') || 'auto')
-  const [saving, setSaving] = useState(false)
-  const [success, setSuccess] = useState(false)

-  // Collaboration States
  const [collaborators, setCollaborators] = useState<Collaborator[]>([])
  const [isOwner, setIsOwner] = useState(true)
  const [inviteLink, setInviteLink] = useState('')
@@ -51,7 +38,6 @@ export default function SettingsForm({ logbookId, onLogbookRestored }: SettingsF
  const [collabError, setCollabError] = useState<string | null>(null)
  const [loadingCollabs, setLoadingCollabs] = useState(false)

-  // Public Share Link States
  const [shareEnabled, setShareEnabled] = useState(false)
  const [shareLink, setShareLink] = useState('')
  const [shareCopied, setShareCopied] = useState(false)
@@ -120,9 +106,9 @@ export default function SettingsForm({ logbookId, onLogbookRestored }: SettingsF
      } else {
        throw new Error('Failed to toggle public share link.')
      }
-    } catch (err: any) {
+    } catch (err: unknown) {
      console.error('Toggle share link failed:', err)
-      showAlert(err.message || 'Failed to update public share link.')
+      showAlert(err instanceof Error ? err.message : 'Failed to update public share link.')
    } finally {
      setLoadingShareLink(false)
    }
@@ -136,7 +122,6 @@ export default function SettingsForm({ logbookId, onLogbookRestored }: SettingsF
    }
  }

-
  const loadCollaborators = async () => {
    setLoadingCollabs(true)
    setCollabError(null)
@@ -173,10 +158,8 @@ export default function SettingsForm({ logbookId, onLogbookRestored }: SettingsF
    if (!localStorage.getItem('active_userid')) return

    try {
-      // 1. Ensure logbook has an E2E key (upgrades legacy logbooks if needed)
      const logbookKey = await ensureLogbookKey(logbookId)

-      // 2. Create invite token on server
      const res = await apiFetch('/api/collaboration/invite', {
        method: 'POST',
        body: JSON.stringify({ logbookId, role: 'WRITE' })
@@ -187,16 +170,14 @@ export default function SettingsForm({ logbookId, onLogbookRestored }: SettingsF
      }

      const invite = await res.json()
-      
-      // 3. Format link containing token (URL params) and key (URL hash anchor)
      const hexKey = bufferToHex(logbookKey)
      const link = `${window.location.origin}/invite?token=${invite.token}#key=${hexKey}`
-      
+
      setInviteLink(link)
      trackPlausibleEvent(PlausibleEvents.INVITE_GENERATED)
-    } catch (err: any) {
+    } catch (err: unknown) {
      console.error('Failed to generate invite:', err)
-      showAlert(err.message || 'Failed to generate invite link.')
+      showAlert(err instanceof Error ? err.message : 'Failed to generate invite link.')
    } finally {
      setGeneratingInvite(false)
    }
@@ -225,40 +206,26 @@ export default function SettingsForm({ logbookId, onLogbookRestored }: SettingsF
        } else {
          throw new Error('Failed to revoke collaborator access.')
        }
-      } catch (err: any) {
+      } catch (err: unknown) {
        console.error('Revocation failed:', err)
-        showAlert(err.message || 'Failed to revoke access.')
+        showAlert(err instanceof Error ? err.message : 'Failed to revoke access.')
      }
    }
  }

-  const persistAppearance = (nextTheme: string, nextColorScheme: string) => {
-    localStorage.setItem('active_theme', nextTheme)
-    localStorage.setItem('active_color_scheme', nextColorScheme)
-    notifyAppearanceChanged()
-  }
-
-  const handleThemeChange = (nextTheme: string) => {
-    setTheme(nextTheme)
-    persistAppearance(nextTheme, colorScheme)
-  }
-
-  const handleColorSchemeChange = (nextColorScheme: string) => {
-    setColorScheme(nextColorScheme)
-    persistAppearance(theme, nextColorScheme)
-  }
-
-  const handleSubmit = (e: React.FormEvent) => {
-    e.preventDefault()
-    setSaving(true)
-    setSuccess(false)
-    
-    localStorage.setItem('owm_api_key', apiKey.trim())
-    persistAppearance(theme, colorScheme)
-    
-    setSaving(false)
-    setSuccess(true)
-    setTimeout(() => setSuccess(false), 3000)
+  if (!logbookId) {
+    return (
+      <div className="form-card">
+        <div className="form-header">
+          <SettingsIcon size={24} className="form-icon" />
+          <div>
+            <h2>{t('settings.title')}</h2>
+            <p className="form-subtitle">{t('settings.subtitle')}</p>
+          </div>
+        </div>
+        <p className="text-muted mt-4">{t('settings.select_logbook_hint')}</p>
+      </div>
+    )
  }

  return (
@@ -267,128 +234,12 @@ export default function SettingsForm({ logbookId, onLogbookRestored }: SettingsF
        <SettingsIcon size={24} className="form-icon" />
        <div>
          <h2>{t('settings.title')}</h2>
-          <p className="form-subtitle" style={{ margin: '4px 0 0 0', fontSize: '13px', color: '#94a3b8' }}>
-            {t('settings.subtitle')}
-          </p>
+          <p className="form-subtitle">{t('settings.subtitle')}</p>
        </div>
      </div>

-      <form onSubmit={handleSubmit} className="vessel-form mt-6">
-        <PwaInstallPrompt variant="inline" />
-        <PushNotificationSettings />
-
-        {/* Weather Integration card */}
-        <div className="member-editor-card glass">
-          <h3 style={{ marginTop: 0, marginBottom: '12px', color: '#fbbf24', fontSize: '16px' }}>
-            {t('settings.owm_title')}
-          </h3>
-          <p style={{ fontSize: '13.5px', color: '#94a3b8', lineHeight: '145%', margin: '0 0 16px 0' }}>
-            {t('settings.key_help')}
-          </p>
-
-          <div className="input-group">
-            <label htmlFor="owm-api-key" style={{ display: 'block', fontSize: '13.5px', color: '#94a3b8', marginBottom: '6px', fontWeight: 500 }}>
-              {t('settings.owm_key')}
-            </label>
-            <input
-              id="owm-api-key"
-              name="owm-api-key"
-              type="password"
-              className="input-text"
-              placeholder="e.g. 8b6a7f...d8"
-              value={apiKey}
-              onChange={(e) => setApiKey(e.target.value)}
-              disabled={saving}
-              autoComplete="off"
-            />
-          </div>
-        </div>
-
-        {/* Theme customization card */}
-        <div className="member-editor-card glass mt-4">
-          <h3 style={{ marginTop: 0, marginBottom: '12px', color: '#fbbf24', fontSize: '16px' }}>
-            {t('settings.theme_title')}
-          </h3>
-          <p style={{ fontSize: '13.5px', color: '#94a3b8', lineHeight: '145%', margin: '0 0 16px 0' }}>
-            {t('settings.theme_label')}
-          </p>
-
-          <div className="input-group">
-            <ThemedSelect
-              id="app-theme"
-              value={theme}
-              disabled={saving}
-              onChange={handleThemeChange}
-              options={[
-                { value: 'auto', label: t('settings.theme_auto') },
-                { value: 'ocean', label: t('settings.theme_ocean') },
-                { value: 'material', label: t('settings.theme_material') },
-                { value: 'cupertino', label: t('settings.theme_cupertino') }
-              ]}
-            />
-          </div>
-        </div>
-
-        <div className="member-editor-card glass mt-4">
-          <h3 style={{ marginTop: 0, marginBottom: '12px', color: 'var(--app-accent-light)', fontSize: '16px' }}>
-            {t('settings.color_scheme_title')}
-          </h3>
-          <p className="text-muted" style={{ fontSize: '13.5px', lineHeight: '145%', margin: '0 0 16px 0' }}>
-            {t('settings.color_scheme_label')}
-          </p>
-
-          <div className="input-group">
-            <ThemedSelect
-              id="app-color-scheme"
-              value={colorScheme}
-              disabled={saving}
-              onChange={handleColorSchemeChange}
-              options={[
-                { value: 'auto', label: t('settings.color_scheme_auto') },
-                { value: 'light', label: t('settings.color_scheme_light') },
-                { value: 'dark', label: t('settings.color_scheme_dark') }
-              ]}
-            />
-          </div>
-        </div>
-
-        <div className="member-editor-card glass mt-4">
-          <div style={{ display: 'flex', alignItems: 'center', gap: '8px', marginBottom: '12px' }}>
-            <Compass size={20} style={{ color: 'var(--app-accent-light)' }} />
-            <h3 style={{ margin: 0, color: 'var(--app-accent-light)', fontSize: '16px' }}>
-              {t('settings.tour_title')}
-            </h3>
-          </div>
-          <p className="text-muted" style={{ fontSize: '13.5px', lineHeight: '145%', margin: '0 0 16px 0' }}>
-            {t('settings.tour_desc')}
-          </p>
-          <button
-            type="button"
-            className="btn secondary"
-            onClick={() => restartTour()}
-          >
-            {t('settings.tour_restart')}
-          </button>
-        </div>
-
-        <div className="form-actions mt-4 mb-6">
-          {success && (
-            <div className="success-toast">
-              <Check size={16} />
-              <span>{t('settings.saved')}</span>
-            </div>
-          )}
-          
-          <button type="submit" className="btn primary" disabled={saving}>
-            <Save size={18} />
-            {saving ? t('settings.saving') : t('settings.save')}
-          </button>
-        </div>
-      </form>
-
-      {/* Public Share Link Card (Only visible to Logbook Owner) */}
      {logbookId && isOwner && (
-        <div className="member-editor-card glass mt-6" style={{ borderTop: '1px solid rgba(255,255,255,0.05)', paddingTop: '24px' }}>
+        <div className="member-editor-card glass mt-6">
          <div style={{ display: 'flex', alignItems: 'center', gap: '8px', marginBottom: '12px' }}>
            <LinkIcon size={20} style={{ color: '#fbbf24' }} />
            <h3 style={{ margin: 0, color: '#fbbf24', fontSize: '16px' }}>
@@ -441,12 +292,10 @@ export default function SettingsForm({ logbookId, onLogbookRestored }: SettingsF
        </div>
      )}

-      {/* Backup & Restore (owner only) */}
      {logbookId && isOwner && (
        <LogbookBackupPanel logbookId={logbookId} onRestored={onLogbookRestored} />
      )}

-      {/* Crew Collaboration Card (Only visible to Logbook Owner) */}
      {logbookId && isOwner && (
        <div className="member-editor-card glass mt-6" style={{ borderTop: '1px solid rgba(255,255,255,0.05)', paddingTop: '24px' }}>
          <div style={{ display: 'flex', alignItems: 'center', gap: '8px', marginBottom: '12px' }}>
@@ -494,7 +343,6 @@ export default function SettingsForm({ logbookId, onLogbookRestored }: SettingsF
            </div>
          )}

-          {/* Collaborator List */}
          <h4 style={{ color: '#fbbf24', fontSize: '14px', marginBottom: '12px' }}>
            {t('logs.collaborators_list')}
          </h4>
@@ -5,6 +5,7 @@ import SignaturePad from './SignaturePad.tsx'
 import PasskeySignButton from './PasskeySignButton.tsx'
 import type { PasskeySignature, SignatureValue } from '../types/signatures.js'
 import { isPasskeySignature, getSignaturePayload, getSignatureAttribution } from '../utils/signatures.js'
+import { formatAppDateTime } from '../utils/dateTimeFormat.js'

 type SignatureMode = 'passkey' | 'classic'

@@ -30,9 +31,7 @@ function SignerAttributionBadge({ value }: { value: SignatureValue | '' }) {
  const attribution = getSignatureAttribution(value)
  if (!attribution) return null

-  const formattedDate = new Date(attribution.signedAt).toLocaleString(
-    i18n.language === 'de' ? 'de-DE' : 'en-GB'
-  )
+  const formattedDate = formatAppDateTime(attribution.signedAt, i18n.language)

  return (
    <div className="passkey-sign-badge valid signature-attribution-badge">
@@ -28,6 +28,7 @@ import {
  CircleAlert
 } from 'lucide-react'
 import AccountDangerZone from './AccountDangerZone.tsx'
+import UserProfilePreferences from './UserProfilePreferences.tsx'
 import BetaBadge from './BetaBadge.tsx'
 import { useDialog } from './ModalDialog.tsx'
 import {
@@ -476,6 +477,8 @@ export default function UserProfilePage({ onBack, onLogout }: UserProfilePagePro
              </dl>
            </section>

+            <UserProfilePreferences userId={profile.userId} />
+
            <section className="member-editor-card glass">
              <div className="profile-section-header">
                <Shield size={20} />
@@ -0,0 +1,155 @@
+import { useState } from 'react'
+import { useTranslation } from 'react-i18next'
+import { Compass, Palette, Save, Check, Cloud } from 'lucide-react'
+import ThemedSelect from './ThemedSelect.tsx'
+import PushNotificationSettings from './PushNotificationSettings.tsx'
+import PwaInstallPrompt from './PwaInstallPrompt.tsx'
+import { notifyAppearanceChanged } from '../services/appearance.js'
+import { useAppTour } from '../context/AppTourContext.tsx'
+import {
+  getColorSchemePreference,
+  getOwmApiKey,
+  getThemePreference,
+  setColorSchemePreference,
+  setOwmApiKey,
+  setThemePreference
+} from '../services/userPreferences.js'
+
+interface UserProfilePreferencesProps {
+  userId: string
+}
+
+export default function UserProfilePreferences({ userId }: UserProfilePreferencesProps) {
+  const { t } = useTranslation()
+  const { restartTour } = useAppTour()
+  const [apiKey, setApiKey] = useState(() => getOwmApiKey(userId))
+  const [theme, setTheme] = useState(() => getThemePreference(userId))
+  const [colorScheme, setColorScheme] = useState(() => getColorSchemePreference(userId))
+  const [savingOwm, setSavingOwm] = useState(false)
+  const [owmSaved, setOwmSaved] = useState(false)
+
+  const persistAppearance = (nextTheme: string, nextColorScheme: string) => {
+    setThemePreference(userId, nextTheme)
+    setColorSchemePreference(userId, nextColorScheme)
+    notifyAppearanceChanged()
+  }
+
+  const handleThemeChange = (nextTheme: string) => {
+    setTheme(nextTheme)
+    persistAppearance(nextTheme, colorScheme)
+  }
+
+  const handleColorSchemeChange = (nextColorScheme: string) => {
+    setColorScheme(nextColorScheme)
+    persistAppearance(theme, nextColorScheme)
+  }
+
+  const handleSaveOwm = (e: React.FormEvent) => {
+    e.preventDefault()
+    setSavingOwm(true)
+    setOwmSaved(false)
+    setOwmApiKey(userId, apiKey)
+    setSavingOwm(false)
+    setOwmSaved(true)
+    window.setTimeout(() => setOwmSaved(false), 3000)
+  }
+
+  return (
+    <>
+      <section className="member-editor-card glass">
+        <div className="profile-section-header">
+          <Palette size={20} />
+          <h3>{t('profile.appearance_title')}</h3>
+        </div>
+        <p className="profile-section-desc">{t('profile.appearance_desc')}</p>
+
+        <div className="input-group">
+          <label htmlFor="profile-app-theme" className="profile-field-label">
+            {t('profile.theme_label')}
+          </label>
+          <ThemedSelect
+            id="profile-app-theme"
+            value={theme}
+            onChange={handleThemeChange}
+            options={[
+              { value: 'auto', label: t('profile.theme_auto') },
+              { value: 'ocean', label: t('profile.theme_ocean') },
+              { value: 'material', label: t('profile.theme_material') },
+              { value: 'cupertino', label: t('profile.theme_cupertino') }
+            ]}
+          />
+        </div>
+
+        <div className="input-group mt-4">
+          <label htmlFor="profile-color-scheme" className="profile-field-label">
+            {t('profile.color_scheme_label')}
+          </label>
+          <ThemedSelect
+            id="profile-color-scheme"
+            value={colorScheme}
+            onChange={handleColorSchemeChange}
+            options={[
+              { value: 'auto', label: t('profile.color_scheme_auto') },
+              { value: 'light', label: t('profile.color_scheme_light') },
+              { value: 'dark', label: t('profile.color_scheme_dark') }
+            ]}
+          />
+        </div>
+      </section>
+
+      <section className="member-editor-card glass">
+        <div className="profile-section-header">
+          <Compass size={20} />
+          <h3>{t('profile.tour_title')}</h3>
+        </div>
+        <p className="profile-section-desc">{t('profile.tour_desc')}</p>
+        <div className="form-actions">
+          <button type="button" className="btn secondary" onClick={() => restartTour()}>
+            {t('profile.tour_restart')}
+          </button>
+        </div>
+      </section>
+
+      <section className="member-editor-card glass">
+        <div className="profile-section-header">
+          <Cloud size={20} />
+          <h3>{t('profile.integrations_title')}</h3>
+        </div>
+        <p className="profile-section-desc">{t('profile.owm_help')}</p>
+        <form onSubmit={handleSaveOwm}>
+          <div className="input-group">
+            <label htmlFor="profile-owm-api-key" className="profile-field-label">
+              {t('profile.owm_key')}
+            </label>
+            <input
+              id="profile-owm-api-key"
+              name="owm-api-key"
+              type="password"
+              className="input-text"
+              placeholder="e.g. 8b6a7f...d8"
+              value={apiKey}
+              onChange={(e) => setApiKey(e.target.value)}
+              disabled={savingOwm}
+              autoComplete="off"
+            />
+          </div>
+          <div className="form-actions mt-4">
+            {owmSaved && (
+              <div className="success-toast">
+                <Check size={16} />
+                <span>{t('profile.prefs_saved')}</span>
+              </div>
+            )}
+            <button type="submit" className="btn primary" disabled={savingOwm}>
+              <Save size={18} />
+              {savingOwm ? t('profile.prefs_saving') : t('profile.prefs_save')}
+            </button>
+          </div>
+        </form>
+      </section>
+
+      <PushNotificationSettings />
+      <PwaInstallPrompt variant="inline" />
+    </>
+  )
+}
@@ -6,6 +6,8 @@ const UPDATE_SUPPRESS_KEY = 'pwa_update_suppress_until'
 const UPDATE_SUPPRESS_MS = 30_000
 const UPDATE_DISMISS_SUPPRESS_MS = 60 * 60 * 1000
 const UPDATE_RELOAD_FALLBACK_MS = 2000
+/** Prevent Android PWA cold-start reload loops from onNeedReload. */
+const PWA_INITIAL_RELOAD_KEY = 'pwa_sw_initial_reload_done'

 function isUpdateSuppressed(): boolean {
  const suppressUntil = Number(sessionStorage.getItem(UPDATE_SUPPRESS_KEY) || '0')
@@ -48,8 +50,13 @@ export function usePwaUpdate() {
    needRefresh: [needRefresh, setNeedRefresh],
    updateServiceWorker
  } = useRegisterSW({
-    immediate: true,
+    immediate: !import.meta.env.DEV,
    onNeedReload() {
+      // First SW takeover requires one reload; guard against repeated reloads on Android PWA resume.
+      if (sessionStorage.getItem(PWA_INITIAL_RELOAD_KEY)) {
+        return
+      }
+      sessionStorage.setItem(PWA_INITIAL_RELOAD_KEY, '1')
      clearUpdateSuppression()
      setNeedRefresh(false)
      window.location.reload()
@@ -0,0 +1,25 @@
+import { describe, expect, it } from 'vitest'
+import deJson from './locales/de.json'
+import enJson from './locales/en.json'
+
+const resources = {
+  de: { translation: deJson.translation },
+  en: { translation: enJson.translation }
+}
+
+describe('course dial i18n keys', () => {
+  it.each([
+    'logs.event_course_section',
+    'logs.course_tab_mgk',
+    'logs.course_tab_rwk',
+    'logs.course_dial_hint',
+    'logs.course_step_fine',
+    'logs.wind_mode_cardinal'
+  ])('resolves %s in de and en bundles', async (key) => {
+    const { default: i18n } = await import('i18next')
+    await i18n.init({ lng: 'de', resources, defaultNS: 'translation' })
+    expect(i18n.t(key)).not.toBe(key)
+    await i18n.changeLanguage('en')
+    expect(i18n.t(key)).not.toBe(key)
+  })
+})
@@ -1,19 +1,26 @@
 import i18n from 'i18next'
 import { initReactI18next } from 'react-i18next'
 import LanguageDetector from 'i18next-browser-languagedetector'
-import enTranslation from './locales/en.json'
-import deTranslation from './locales/de.json'
+import enJson from './locales/en.json'
+import deJson from './locales/de.json'
 import { initSeo } from '../utils/seo.js'

+/** JSON files wrap strings in `translation` — register that namespace explicitly. */
+const resources = {
+  en: { translation: enJson.translation },
+  de: { translation: deJson.translation }
+}
+
 i18n
  .use(LanguageDetector)
  .use(initReactI18next)
  .init({
-    resources: {
-      en: enTranslation,
-      de: deTranslation
-    },
+    resources,
+    defaultNS: 'translation',
    fallbackLng: 'en',
+    supportedLngs: ['de', 'en'],
+    nonExplicitSupportedLngs: true,
+    load: 'languageOnly',
    interpolation: {
      escapeValue: false // React already escapes values (prevents XSS)
    },
@@ -23,7 +23,7 @@
    },
    "auth": {
      "welcome": "Willkommen bei Kapteins Daagbok",
-      "tagline": "Sicheres, E2E-verschlüsseltes maritimes Logbuch.",
+      "tagline": "Dein sicheres, E2E-verschlüsseltes maritimes Logbuch.",
      "register": "Mit Passkey registrieren",
      "login": "Mit Passkey anmelden",
      "login_as": "Anmelden als {{name}}",
@@ -190,6 +190,23 @@
      "event_time": "Uhrzeit",
      "event_mgk": "MgK Kurs",
      "event_rwk": "RwK Kurs",
+      "event_course_section": "Kurs",
+      "course_dial_hint": "Am Ring drehen oder Grad eingeben",
+      "course_dial_step_label": "Schrittweite",
+      "course_step_fine": "1°",
+      "course_step_medium": "5°",
+      "course_step_coarse": "10°",
+      "course_tab_mgk": "MgK",
+      "course_tab_rwk": "rwK",
+      "course_invalid": "Ungültiger Kurs (0–360)",
+      "course_placeholder_degrees": "z. B. 180",
+      "course_placeholder_cardinal": "z. B. NW",
+      "compass_n": "N",
+      "compass_e": "O",
+      "compass_s": "S",
+      "compass_w": "W",
+      "wind_mode_cardinal": "Kardinal",
+      "wind_mode_degrees": "Als Grad",
      "event_wind_direction": "Wind-Richtung",
      "event_wind_strength": "Windstärke",
      "event_sea_state": "Seegang",
@@ -205,6 +222,8 @@
      "event_heel": "Krängung (°)",
      "event_sails": "Segelführung / Motor",
      "motor_propulsion": "Maschinenfahrt",
+      "sails_picker_show_more": "Alle Segel anzeigen",
+      "sails_picker_show_less": "Weniger anzeigen",
      "motor_hours": "Maschinenstunden (gesamt)",
      "fuel_per_motor_hour": "Verbrauch pro Maschinenstunde",
      "event_distance": "Distanz (sm)",
@@ -270,7 +289,11 @@
      "role_crew_hint": "Eingeladenes Logbuch — du kannst als Crew mitarbeiten und signieren",
      "role_read": "Nur Lesen",
      "role_read_hint": "Geteiltes Logbuch — nur Ansicht, keine Bearbeitung",
-      "open_profile": "Profil von {{name}} öffnen"
+      "open_profile": "Profil von {{name}} öffnen",
+      "edit_title": "Logbuch umbenennen",
+      "edit_placeholder": "Neuer Name des Logbuchs",
+      "edit_success": "Logbuch erfolgreich umbenannt",
+      "edit_btn": "Umbenennen"
    },
    "profile": {
      "title": "Benutzerprofil",
@@ -359,7 +382,35 @@
      "stats_subtitle": "Über alle deine Logbücher auf diesem Gerät",
      "stats_logbooks": "Logbücher",
      "stats_account_since": "Konto seit",
-      "stats_shared_logbooks": "Geteilte Logbücher"
+      "stats_shared_logbooks": "Geteilte Logbücher",
+      "appearance_title": "App & Darstellung",
+      "appearance_desc": "Design und Farbschema gelten für die gesamte App auf diesem Gerät.",
+      "theme_label": "Design-Stil der App",
+      "theme_auto": "Automatisch (OS-Erkennung)",
+      "theme_ocean": "Ocean (Glassmorphismus)",
+      "theme_material": "Material (Android)",
+      "theme_cupertino": "Cupertino (iOS)",
+      "color_scheme_label": "Hell- oder Dunkelmodus",
+      "color_scheme_auto": "Automatisch (System)",
+      "color_scheme_light": "Hell",
+      "color_scheme_dark": "Dunkel",
+      "integrations_title": "Integrationen",
+      "owm_key": "OpenWeatherMap API-Schlüssel",
+      "owm_help": "Optional: eigener OpenWeatherMap-API-Schlüssel. Ohne Eintrag wird der serverseitige Schlüssel aus der Betreiber-Konfiguration verwendet.",
+      "prefs_save": "Speichern",
+      "prefs_saving": "Wird gespeichert…",
+      "prefs_saved": "Gespeichert",
+      "tour_title": "App-Tour",
+      "tour_desc": "Lass dich erneut durch die wichtigsten Bereiche der App führen.",
+      "tour_restart": "Tour erneut starten",
+      "push_title": "Push-Benachrichtigungen",
+      "push_desc": "Als Logbuch-Eigner wirst du benachrichtigt, wenn eingeladene Crewmitglieder Änderungen synchronisieren. Es werden keine Inhalte im Klartext übermittelt.",
+      "push_enable": "Bei Crew-Änderungen benachrichtigen",
+      "push_active": "Push-Benachrichtigungen sind auf diesem Gerät aktiv.",
+      "push_unsupported": "Push-Benachrichtigungen werden in diesem Browser nicht unterstützt.",
+      "push_denied_hint": "Benachrichtigungen sind blockiert. Erlaube sie in den Browser- oder Geräteeinstellungen.",
+      "push_ios_install_hint": "Auf dem iPhone/iPad: App zum Home-Bildschirm hinzufügen (iOS 16.4+), um Push zu nutzen.",
+      "push_error": "Push-Benachrichtigungen konnten nicht aktiviert werden."
    },
    "crew": {
      "title": "Skipper- & Crew-Profile",
@@ -396,30 +447,14 @@
      "loading": "Kalibrierungstabelle wird geladen..."
    },
    "settings": {
-      "title": "Systemeinstellungen",
-      "subtitle": "Konfiguriere externe Integrationen und Anmeldedaten.",
-      "owm_title": "Wetter-Integration",
-      "owm_key": "OpenWeatherMap API-Schlüssel",
-      "save": "Konfiguration speichern",
-      "saving": "Wird gespeichert...",
-      "saved": "Einstellungen erfolgreich gespeichert!",
-      "key_help": "Optional: eigener OpenWeatherMap-API-Schlüssel. Ohne Eintrag wird der serverseitige Schlüssel aus der Betreiber-Konfiguration verwendet.",
-      "no_key": "Kein OpenWeatherMap-API-Schlüssel verfügbar. Hinterlege einen eigenen Schlüssel in den Einstellungen oder kontaktiere den Betreiber.",
+      "title": "Logbuch-Einstellungen",
+      "subtitle": "Teilen, Backup und Zusammenarbeit für dieses Logbuch.",
+      "select_logbook_hint": "Wähle ein Logbuch aus, um dessen Einstellungen zu bearbeiten.",
+      "no_key": "Kein OpenWeatherMap-API-Schlüssel verfügbar. Hinterlege einen eigenen Schlüssel im Benutzerprofil oder kontaktiere den Betreiber.",
      "weather_success": "Wetterdaten erfolgreich abgerufen!",
      "weather_error": "Wetterdatenabruf fehlgeschlagen. Überprüfe den API-Schlüssel und die Verbindung.",
      "weather_date_mismatch": "Wetterdaten können nur für den heutigen Tag ({{today}}) abgerufen werden. Dieser Logbucheintrag ist auf den {{date}} datiert.",
      "gps_error": "Bitte gib einen Ort an oder ermittle die GPS-Koordinaten.",
-      "theme_title": "Design-Anpassung",
-      "theme_label": "Design-Stil der App",
-      "theme_auto": "Automatisch (OS-Erkennung)",
-      "theme_ocean": "Ocean (Glassmorphismus)",
-      "theme_material": "Material (Android)",
-      "theme_cupertino": "Cupertino (iOS)",
-      "color_scheme_title": "Erscheinungsbild",
-      "color_scheme_label": "Hell- oder Dunkelmodus (Standard: Systemeinstellung)",
-      "color_scheme_auto": "Automatisch (System)",
-      "color_scheme_light": "Hell",
-      "color_scheme_dark": "Dunkel",
      "share_title": "Logbuch teilen (Schreibgeschützt)",
      "share_desc": "Aktiviere diese Option, um einen öffentlichen, schreibgeschützten Link zu erstellen. Jeder mit dem Link kann deine Reisen, Yacht-Profile und Besatzung ansehen. Die Verschlüsselungsschlüssel werden niemals an den Server übertragen (sie bleiben im Hash-Teil der URL).",
      "share_privacy_warning": "Empfehlung: Teile diesen Link nur privat (z. B. per E-Mail oder Messenger), nicht in sozialen Medien.",
@@ -436,17 +471,6 @@
      "delete_account_failed": "Konto konnte nicht gelöscht werden. Bitte versuche es erneut.",
      "delete_backup_hint": "Tipp: Erstelle vor dem Löschen Backups deiner Logbücher (.daagbok.json) in den Einstellungen jedes Logbuchs.",
      "deleting_account": "Konto wird gelöscht…",
-      "tour_title": "App-Tour",
-      "tour_desc": "Lass dich erneut durch die wichtigsten Bereiche der App führen.",
-      "tour_restart": "Tour erneut starten",
-      "push_title": "Push-Benachrichtigungen",
-      "push_desc": "Als Logbuch-Eigner wirst du benachrichtigt, wenn eingeladene Crewmitglieder Änderungen synchronisieren. Es werden keine Inhalte im Klartext übermittelt.",
-      "push_enable": "Bei Crew-Änderungen benachrichtigen",
-      "push_active": "Push-Benachrichtigungen sind auf diesem Gerät aktiv.",
-      "push_unsupported": "Push-Benachrichtigungen werden in diesem Browser nicht unterstützt.",
-      "push_denied_hint": "Benachrichtigungen sind blockiert. Erlaube sie in den Browser- oder Geräteeinstellungen.",
-      "push_ios_install_hint": "Auf dem iPhone/iPad: App zum Home-Bildschirm hinzufügen (iOS 16.4+), um Push zu nutzen.",
-      "push_error": "Push-Benachrichtigungen konnten nicht aktiviert werden.",
      "backup_title": "Backup & Wiederherstellung",
      "backup_desc": "Vollständiges verschlüsseltes Backup dieses Logbuchs (Einträge, Fotos, GPS-Tracks, Crew, Schiff). Mit Backup-Passphrase geschützt — für Restore auf diesem oder einem neuen Account.",
      "backup_export_title": "Backup erstellen",
@@ -190,6 +190,23 @@
      "event_time": "Time",
      "event_mgk": "MgK Course",
      "event_rwk": "RwK Course",
+      "event_course_section": "Course",
+      "course_dial_hint": "Drag the ring or enter degrees",
+      "course_dial_step_label": "Step size",
+      "course_step_fine": "1°",
+      "course_step_medium": "5°",
+      "course_step_coarse": "10°",
+      "course_tab_mgk": "MgK",
+      "course_tab_rwk": "rwK",
+      "course_invalid": "Invalid course (0–360)",
+      "course_placeholder_degrees": "e.g. 180",
+      "course_placeholder_cardinal": "e.g. NW",
+      "compass_n": "N",
+      "compass_e": "E",
+      "compass_s": "S",
+      "compass_w": "W",
+      "wind_mode_cardinal": "Cardinal",
+      "wind_mode_degrees": "As degrees",
      "event_wind_direction": "Wind Dir",
      "event_wind_strength": "Wind Str",
      "event_sea_state": "Sea State",
@@ -205,6 +222,8 @@
      "event_heel": "Heel Angle (°)",
      "event_sails": "Sails / Motor Status",
      "motor_propulsion": "Engine Propulsion",
+      "sails_picker_show_more": "Show all sails",
+      "sails_picker_show_less": "Show less",
      "motor_hours": "Engine hours (total)",
      "fuel_per_motor_hour": "Consumption per engine hour",
      "event_distance": "Distance (nm)",
@@ -270,7 +289,11 @@
      "role_crew_hint": "Invited logbook — you can collaborate and sign as crew",
      "role_read": "Read only",
      "role_read_hint": "Shared logbook — view only, no editing",
-      "open_profile": "Open profile for {{name}}"
+      "open_profile": "Open profile for {{name}}",
+      "edit_title": "Rename Logbook",
+      "edit_placeholder": "New name of the logbook",
+      "edit_success": "Logbook renamed successfully",
+      "edit_btn": "Rename"
    },
    "profile": {
      "title": "User profile",
@@ -359,7 +382,35 @@
      "stats_subtitle": "Across all your logbooks on this device",
      "stats_logbooks": "Logbooks",
      "stats_account_since": "Account since",
-      "stats_shared_logbooks": "Shared logbooks"
+      "stats_shared_logbooks": "Shared logbooks",
+      "appearance_title": "App & appearance",
+      "appearance_desc": "Theme and color scheme apply to the entire app on this device.",
+      "theme_label": "Application style / theme",
+      "theme_auto": "Auto (OS detect)",
+      "theme_ocean": "Ocean (glassmorphism)",
+      "theme_material": "Material (Android)",
+      "theme_cupertino": "Cupertino (iOS)",
+      "color_scheme_label": "Light or dark mode",
+      "color_scheme_auto": "Auto (system)",
+      "color_scheme_light": "Light",
+      "color_scheme_dark": "Dark",
+      "integrations_title": "Integrations",
+      "owm_key": "OpenWeatherMap API key",
+      "owm_help": "Optional: your own OpenWeatherMap API key. If left empty, the operator-configured server key is used.",
+      "prefs_save": "Save",
+      "prefs_saving": "Saving…",
+      "prefs_saved": "Saved",
+      "tour_title": "App tour",
+      "tour_desc": "Take a guided walkthrough of the main areas of the app again.",
+      "tour_restart": "Restart tour",
+      "push_title": "Push notifications",
+      "push_desc": "As logbook owner you are notified when invited crew members sync changes. No logbook content is sent in plain text.",
+      "push_enable": "Notify on crew changes",
+      "push_active": "Push notifications are active on this device.",
+      "push_unsupported": "Push notifications are not supported in this browser.",
+      "push_denied_hint": "Notifications are blocked. Allow them in your browser or device settings.",
+      "push_ios_install_hint": "On iPhone/iPad: add the app to your Home Screen (iOS 16.4+) to use push notifications.",
+      "push_error": "Could not enable push notifications."
    },
    "crew": {
      "title": "Skipper & Crew Profiles",
@@ -396,30 +447,14 @@
      "loading": "Loading calibration table..."
    },
    "settings": {
-      "title": "System Settings",
-      "subtitle": "Configure external integrations and client credentials.",
-      "owm_title": "Weather Integration",
-      "owm_key": "OpenWeatherMap API Key",
-      "save": "Save Configuration",
-      "saving": "Saving...",
-      "saved": "Settings saved successfully!",
-      "key_help": "Optional: your own OpenWeatherMap API key. If left empty, the operator-configured server key is used.",
-      "no_key": "No OpenWeatherMap API key available. Add your own key in settings or contact the operator.",
+      "title": "Logbook settings",
+      "subtitle": "Sharing, backup, and collaboration for this logbook.",
+      "select_logbook_hint": "Select a logbook to edit its settings.",
+      "no_key": "No OpenWeatherMap API key available. Add your own key in your user profile or contact the operator.",
      "weather_success": "Weather details fetched successfully!",
      "weather_error": "Failed to fetch weather. Check your API key and connection.",
      "weather_date_mismatch": "Weather data can only be fetched for today ({{today}}). This logbook entry is dated {{date}}.",
      "gps_error": "Please enter a location or fetch GPS coordinates first.",
-      "theme_title": "UI Customization",
-      "theme_label": "Application Style / Theme",
-      "theme_auto": "Auto (OS Detect)",
-      "theme_ocean": "Ocean (Glassmorphism)",
-      "theme_material": "Material (Android)",
-      "theme_cupertino": "Cupertino (iOS)",
-      "color_scheme_title": "Appearance",
-      "color_scheme_label": "Light or dark mode (default: follow system)",
-      "color_scheme_auto": "Auto (System)",
-      "color_scheme_light": "Light",
-      "color_scheme_dark": "Dark",
      "share_title": "Share Logbook (Read-Only)",
      "share_desc": "Enable this to generate a public, read-only link. Anyone with the link can view your travels, yacht profile, and crew members. Decryption keys are never transmitted to the server (they stay in the hash part of the URL).",
      "share_privacy_warning": "Recommendation: Share this link only privately (e.g. via email or messenger), not on social media.",
@@ -436,17 +471,6 @@
      "delete_account_failed": "Failed to delete account. Please try again.",
      "delete_backup_hint": "Tip: Before deleting, create backups of your logbooks (.daagbok.json) in each logbook's settings.",
      "deleting_account": "Deleting account…",
-      "tour_title": "App tour",
-      "tour_desc": "Take a guided walkthrough of the main areas of the app again.",
-      "tour_restart": "Restart tour",
-      "push_title": "Push notifications",
-      "push_desc": "As logbook owner you are notified when invited crew members sync changes. No logbook content is sent in plain text.",
-      "push_enable": "Notify on crew changes",
-      "push_active": "Push notifications are active on this device.",
-      "push_unsupported": "Push notifications are not supported in this browser.",
-      "push_denied_hint": "Notifications are blocked. Allow them in your browser or device settings.",
-      "push_ios_install_hint": "On iPhone/iPad: add the app to your Home Screen (iOS 16.4+) to use push notifications.",
-      "push_error": "Could not enable push notifications.",
      "backup_title": "Backup & restore",
      "backup_desc": "Full encrypted backup of this logbook (entries, photos, GPS tracks, crew, vessel). Protected with a backup passphrase — restore on this or a new account.",
      "backup_export_title": "Create backup",
@@ -3,14 +3,55 @@ import { createRoot } from 'react-dom/client'
 import 'leaflet/dist/leaflet.css'
 import './themes.css'
 import './index.css'
-import App from './App.tsx'
 import './i18n'
+import App from './App.tsx'
 import { applyAppearanceToDocument } from './services/appearance.ts'

-applyAppearanceToDocument()
+/** Stale PWA precache on localhost can shadow Vite dev modules. */
+async function clearDevServiceWorkerCaches(): Promise<void> {
+  if (!import.meta.env.DEV || !('serviceWorker' in navigator)) return
+  const regs = await navigator.serviceWorker.getRegistrations()
+  await Promise.all(regs.map((r) => r.unregister()))
+  if ('caches' in window) {
+    const keys = await caches.keys()
+    await Promise.all(keys.map((k) => caches.delete(k)))
+  }
+}

-createRoot(document.getElementById('root')!).render(
-  <StrictMode>
-    <App />
-  </StrictMode>,
-)
+function renderBootstrapError(message: string): void {
+  const root = document.getElementById('root')
+  if (!root) return
+  root.innerHTML = `
+    <div class="auth-screen">
+      <div class="auth-card glass" role="alert" style="max-width:420px">
+        <h2 style="margin-top:0">Kapteins Daagbok</h2>
+        <p style="color:var(--app-text-muted);line-height:1.5">${message}</p>
+        <button type="button" class="btn primary" style="width:100%;margin-top:16px" onclick="location.reload()">
+          Neu laden
+        </button>
+      </div>
+    </div>`
+}
+
+async function bootstrap(): Promise<void> {
+  applyAppearanceToDocument()
+  await clearDevServiceWorkerCaches()
+
+  const rootEl = document.getElementById('root')
+  if (!rootEl) {
+    throw new Error('Missing #root element')
+  }
+
+  createRoot(rootEl).render(
+    <StrictMode>
+      <App />
+    </StrictMode>,
+  )
+}
+
+void bootstrap().catch((err) => {
+  console.error('App bootstrap failed:', err)
+  renderBootstrapError(
+    'Die App konnte nicht gestartet werden. Bitte neu laden oder die App vollständig beenden und erneut öffnen.',
+  )
+})
@@ -1,3 +1,5 @@
+import { getColorSchemePreference as getStoredColorScheme, getThemePreference } from './userPreferences.js'
+
 export type ColorSchemePreference = 'auto' | 'light' | 'dark'
 export type ResolvedColorScheme = 'light' | 'dark'
 export type AppTheme = 'ocean' | 'material' | 'cupertino'
@@ -6,7 +8,7 @@ const THEME_CLASSES = ['theme-ocean', 'theme-material', 'theme-cupertino'] as co
 const SCHEME_CLASSES = ['scheme-light', 'scheme-dark'] as const

 export function getColorSchemePreference(): ColorSchemePreference {
-  const stored = localStorage.getItem('active_color_scheme')
+  const stored = getStoredColorScheme()
  if (stored === 'light' || stored === 'dark' || stored === 'auto') return stored
  return 'auto'
 }
@@ -19,7 +21,7 @@ export function resolveColorScheme(pref?: ColorSchemePreference): ResolvedColorS
 }

 export function resolveAppTheme(): AppTheme {
-  const configTheme = localStorage.getItem('active_theme') || 'auto'
+  const configTheme = getThemePreference() || 'auto'
  if (configTheme === 'material' || configTheme === 'cupertino' || configTheme === 'ocean') {
    return configTheme
  }
@@ -33,10 +33,33 @@ export function setActiveMasterKey(key: ArrayBuffer | null) {
 }

 export async function checkServerSession(): Promise<{ authenticated: boolean; userId?: string }> {
+  const controller = new AbortController()
+  const timeoutId = window.setTimeout(() => controller.abort(), 8_000)
  try {
-    return await apiJson<{ authenticated: boolean; userId?: string }>(`${API_BASE}/session`)
+    return await apiJson<{ authenticated: boolean; userId?: string }>(`${API_BASE}/session`, {
+      signal: controller.signal
+    })
  } catch {
    return { authenticated: false }
+  } finally {
+    window.clearTimeout(timeoutId)
+  }
+}
+
+/** Master key + username in memory/storage — enough to stay in the unlocked UI. */
+export function hasUnlockedLocalCrypto(): boolean {
+  return !!(getActiveMasterKey() && localStorage.getItem('active_username'))
+}
+
+/** Crypto unlock plus user id for authenticated API calls (userId may already be in localStorage). */
+export function hasUnlockedLocalSession(): boolean {
+  return hasUnlockedLocalCrypto() && !!localStorage.getItem('active_userid')
+}
+
+/** Persist server session user id when the /session response includes it. */
+export function persistSessionUserId(userId: string | undefined): void {
+  if (userId) {
+    localStorage.setItem('active_userid', userId)
  }
 }

@@ -0,0 +1,53 @@
+import { beforeEach, describe, expect, it } from 'vitest'
+import {
+  hasUnlockedLocalCrypto,
+  hasUnlockedLocalSession,
+  setActiveMasterKey
+} from './auth.js'
+
+describe('local session unlock checks', () => {
+  beforeEach(() => {
+    localStorage.clear()
+    setActiveMasterKey(null)
+  })
+
+  it('hasUnlockedLocalCrypto with master key and username only', () => {
+    setActiveMasterKey(new ArrayBuffer(32))
+    localStorage.setItem('active_username', 'skipper')
+    expect(hasUnlockedLocalCrypto()).toBe(true)
+    expect(hasUnlockedLocalSession()).toBe(false)
+  })
+
+  it('hasUnlockedLocalSession when userId is present', () => {
+    setActiveMasterKey(new ArrayBuffer(32))
+    localStorage.setItem('active_username', 'skipper')
+    localStorage.setItem('active_userid', 'user-1')
+    expect(hasUnlockedLocalCrypto()).toBe(true)
+    expect(hasUnlockedLocalSession()).toBe(true)
+  })
+
+  it('hasUnlockedLocalCrypto false without master key', () => {
+    localStorage.setItem('active_username', 'skipper')
+    localStorage.setItem('active_userid', 'user-1')
+    expect(hasUnlockedLocalCrypto()).toBe(false)
+  })
+})
+
+describe('persistSessionUserId', () => {
+  beforeEach(() => {
+    localStorage.clear()
+  })
+
+  it('stores userId when provided', async () => {
+    const { persistSessionUserId } = await import('./auth.js')
+    persistSessionUserId('user-42')
+    expect(localStorage.getItem('active_userid')).toBe('user-42')
+  })
+
+  it('does not clear existing userId when omitted', async () => {
+    const { persistSessionUserId } = await import('./auth.js')
+    localStorage.setItem('active_userid', 'user-1')
+    persistSessionUserId(undefined)
+    expect(localStorage.getItem('active_userid')).toBe('user-1')
+  })
+})
@@ -5,6 +5,7 @@ import { decryptJson } from './crypto.js'
 import { formatSignatureForExport, normalizeSignature } from '../utils/signatures.js'
 import { sortLogEventsByTime } from '../utils/logEntryPayload.js'
 import i18n from '../i18n/index.js'
+import { formatAppDateTime } from '../utils/dateTimeFormat.js'

 function escapeCsvValue(val: string | number | undefined | null): string {
  if (val === null || val === undefined) return '';
@@ -94,11 +95,11 @@ export async function exportLogbookToCsv(logbookId: string, preloadedData?: { ya
  const exportLabels = {
    imagePlaceholder: i18n.t('logs.sign_export_image'),
    passkeyLabel: (username: string, signedAt: string) => {
-      const date = new Date(signedAt).toLocaleString(i18n.language === 'de' ? 'de-DE' : 'en-GB')
+      const date = formatAppDateTime(signedAt, i18n.language)
      return i18n.t('logs.sign_passkey_export', { username, date })
    },
    attributionLabel: (username: string, signedAt: string) => {
-      const date = new Date(signedAt).toLocaleString(i18n.language === 'de' ? 'de-DE' : 'en-GB')
+      const date = formatAppDateTime(signedAt, i18n.language)
      return i18n.t('logs.sign_attribution_export', { username, date })
    }
  };
@@ -322,3 +322,64 @@ export async function deleteLogbook(id: string): Promise<void> {
  await deleteLocalLogbookCache(id)
  trackPlausibleEvent(PlausibleEvents.LOGBOOK_DELETED)
 }
+
+// Update the title of a logbook. Encrypts the title and updates locally + on server
+export async function updateLogbookTitle(id: string, newTitle: string): Promise<void> {
+  const userId = localStorage.getItem('active_userid')
+  if (!userId) {
+    throw new Error('User not authenticated')
+  }
+
+  const masterKey = getActiveMasterKey()
+  if (!masterKey) {
+    throw new Error('Master key not found. User must log in.')
+  }
+
+  const logbookKey = await getLogbookKey(id) || masterKey
+
+  // E2E Encrypt the new title using the Logbook Key (or master key fallback)
+  const encrypted = await encryptJson(newTitle, logbookKey)
+  const encryptedTitleStr = JSON.stringify(encrypted)
+  const now = new Date().toISOString()
+
+  const payloadData = {
+    encryptedTitle: encryptedTitleStr
+  }
+
+  if (navigator.onLine) {
+    try {
+      const response = await apiFetch(`${API_BASE}/${id}`, {
+        method: 'PUT',
+        body: JSON.stringify(payloadData)
+      })
+
+      if (response.ok) {
+        // Update local IndexedDB cache as synced
+        await db.logbooks.update(id, {
+          encryptedTitle: encryptedTitleStr,
+          updatedAt: now,
+          isSynced: 1
+        })
+        return
+      }
+    } catch (error) {
+      console.warn('Failed to update logbook on server, saving locally instead:', error)
+    }
+  }
+
+  // If offline or request failed, store locally as unsynced and add to queue
+  await db.logbooks.update(id, {
+    encryptedTitle: encryptedTitleStr,
+    updatedAt: now,
+    isSynced: 0
+  })
+
+  await db.syncQueue.put({
+    action: 'update',
+    type: 'logbook',
+    payloadId: id,
+    logbookId: id,
+    data: JSON.stringify(payloadData),
+    updatedAt: now
+  })
+}
@@ -6,10 +6,10 @@ import { decryptJson } from './crypto.js'
 import { isSignatureImage, isPasskeySignature, isClassicSignature, getSignaturePayload } from '../utils/signatures.js'
 import { sortLogEventsByTime } from '../utils/logEntryPayload.js'
 import i18n from '../i18n/index.js'
+import { formatAppDateTime } from '../utils/dateTimeFormat.js'

 function formatPasskeySignDate(signedAt: string): string {
-  const locale = i18n.language === 'de' ? 'de-DE' : 'en-GB'
-  return new Date(signedAt).toLocaleString(locale)
+  return formatAppDateTime(signedAt, i18n.language)
 }

 export async function generateLogbookPagePdf(logbookId: string, entryId: string, preloadedData?: { yacht: any; entry: any }): Promise<jsPDF> {
@@ -0,0 +1,61 @@
+import { beforeEach, describe, expect, it } from 'vitest'
+import {
+  getColorSchemePreference,
+  getOwmApiKey,
+  getOwmApiKeyForActiveUser,
+  getThemePreference,
+  setColorSchemePreference,
+  setOwmApiKey,
+  setThemePreference
+} from './userPreferences.js'
+
+const USER_ID = 'test-user-123'
+
+describe('userPreferences', () => {
+  beforeEach(() => {
+    localStorage.clear()
+  })
+
+  it('migrates legacy theme and color scheme keys on first read', () => {
+    localStorage.setItem('active_userid', USER_ID)
+    localStorage.setItem('active_theme', 'material')
+    localStorage.setItem('active_color_scheme', 'dark')
+
+    expect(getThemePreference()).toBe('material')
+    expect(getColorSchemePreference()).toBe('dark')
+    expect(localStorage.getItem(`user_pref_theme_${USER_ID}`)).toBe('material')
+    expect(localStorage.getItem(`user_pref_color_scheme_${USER_ID}`)).toBe('dark')
+  })
+
+  it('stores OWM key per user', () => {
+    setOwmApiKey(USER_ID, 'secret-key')
+    expect(getOwmApiKey(USER_ID)).toBe('secret-key')
+    setOwmApiKey(USER_ID, '  ')
+    expect(getOwmApiKey(USER_ID)).toBe('')
+  })
+
+  it('reads namespaced OWM key via active user id', () => {
+    setOwmApiKey(USER_ID, 'namespaced-only')
+    localStorage.setItem('active_userid', USER_ID)
+    localStorage.removeItem('owm_api_key')
+
+    expect(getOwmApiKeyForActiveUser()).toBe('namespaced-only')
+    expect(getOwmApiKey()).toBe('namespaced-only')
+  })
+
+  it('does not read namespaced OWM key without active user id', () => {
+    setOwmApiKey(USER_ID, 'namespaced-only')
+    localStorage.removeItem('active_userid')
+    localStorage.removeItem('owm_api_key')
+
+    expect(getOwmApiKeyForActiveUser()).toBe('')
+    expect(getOwmApiKey()).toBe('')
+  })
+
+  it('writes theme preferences to namespaced keys', () => {
+    setThemePreference(USER_ID, 'ocean')
+    setColorSchemePreference(USER_ID, 'light')
+    expect(getThemePreference(USER_ID)).toBe('ocean')
+    expect(getColorSchemePreference(USER_ID)).toBe('light')
+  })
+})
@@ -0,0 +1,91 @@
+const LEGACY_THEME = 'active_theme'
+const LEGACY_COLOR_SCHEME = 'active_color_scheme'
+const LEGACY_OWM_KEY = 'owm_api_key'
+
+function themeKey(userId: string): string {
+  return `user_pref_theme_${userId}`
+}
+
+function colorSchemeKey(userId: string): string {
+  return `user_pref_color_scheme_${userId}`
+}
+
+function owmKey(userId: string): string {
+  return `user_pref_owm_api_key_${userId}`
+}
+
+export function getActiveUserId(): string | null {
+  return localStorage.getItem('active_userid')
+}
+
+function migrateLegacyPrefs(userId: string): void {
+  const pairs: Array<{ namespaced: string; legacy: string }> = [
+    { namespaced: themeKey(userId), legacy: LEGACY_THEME },
+    { namespaced: colorSchemeKey(userId), legacy: LEGACY_COLOR_SCHEME },
+    { namespaced: owmKey(userId), legacy: LEGACY_OWM_KEY }
+  ]
+
+  for (const { namespaced, legacy } of pairs) {
+    if (localStorage.getItem(namespaced) != null) continue
+    const value = localStorage.getItem(legacy)
+    if (value != null) {
+      localStorage.setItem(namespaced, value)
+    }
+  }
+}
+
+function resolveUserId(userId?: string | null): string | null {
+  const id = (userId?.trim() || getActiveUserId()?.trim()) || null
+  if (!id) return null
+  migrateLegacyPrefs(id)
+  return id
+}
+
+export function getThemePreference(userId?: string | null): string {
+  const id = resolveUserId(userId)
+  if (id) {
+    return localStorage.getItem(themeKey(id)) ?? localStorage.getItem(LEGACY_THEME) ?? 'auto'
+  }
+  return localStorage.getItem(LEGACY_THEME) ?? 'auto'
+}
+
+export function setThemePreference(userId: string, value: string): void {
+  migrateLegacyPrefs(userId)
+  localStorage.setItem(themeKey(userId), value)
+}
+
+export function getColorSchemePreference(userId?: string | null): string {
+  const id = resolveUserId(userId)
+  if (id) {
+    return localStorage.getItem(colorSchemeKey(id)) ?? localStorage.getItem(LEGACY_COLOR_SCHEME) ?? 'auto'
+  }
+  return localStorage.getItem(LEGACY_COLOR_SCHEME) ?? 'auto'
+}
+
+export function setColorSchemePreference(userId: string, value: string): void {
+  migrateLegacyPrefs(userId)
+  localStorage.setItem(colorSchemeKey(userId), value)
+}
+
+export function getOwmApiKey(userId?: string | null): string {
+  const id = resolveUserId(userId)
+  if (id) {
+    return localStorage.getItem(owmKey(id)) ?? localStorage.getItem(LEGACY_OWM_KEY) ?? ''
+  }
+  return localStorage.getItem(LEGACY_OWM_KEY) ?? ''
+}
+
+/** OWM key for the signed-in user (`active_userid`). Prefer this over a bare `getOwmApiKey()` call. */
+export function getOwmApiKeyForActiveUser(): string {
+  return getOwmApiKey(getActiveUserId())
+}
+
+export function setOwmApiKey(userId: string, value: string): void {
+  migrateLegacyPrefs(userId)
+  const trimmed = value.trim()
+  if (trimmed) {
+    localStorage.setItem(owmKey(userId), trimmed)
+  } else {
+    localStorage.removeItem(owmKey(userId))
+  }
+}
@@ -1,4 +1,5 @@
 import { apiFetch } from './api.js'
+import { getOwmApiKeyForActiveUser } from './userPreferences.js'

 export class WeatherApiError extends Error {
  code: 'NO_KEY' | 'REQUEST_FAILED'
@@ -26,7 +27,7 @@ export async function fetchOpenWeatherCurrent(params: {
    throw new WeatherApiError('lat/lon or location query required')
  }

-  const userKey = localStorage.getItem('owm_api_key')?.trim()
+  const userKey = getOwmApiKeyForActiveUser().trim()
  const headers: Record<string, string> = {}
  if (userKey) headers['X-OWM-Api-Key'] = userKey

@@ -0,0 +1,75 @@
+import { describe, expect, it } from 'vitest'
+import {
+  cardinalToDegrees,
+  degreesToCardinal,
+  formatCourseAngle,
+  isCardinalDirection,
+  normalizeCourseAngleString,
+  normalizeWindDirectionString,
+  parseCourseAngle,
+  pointerAngleToDegrees,
+  snapDegrees
+} from './courseAngle.js'
+
+describe('parseCourseAngle', () => {
+  it('parses padded and plain degrees', () => {
+    expect(parseCourseAngle('042')).toBe(42)
+    expect(parseCourseAngle('185°')).toBe(185)
+    expect(parseCourseAngle('360')).toBe(0)
+  })
+
+  it('rejects invalid values', () => {
+    expect(parseCourseAngle('999')).toBeNull()
+    expect(parseCourseAngle('abc')).toBeNull()
+  })
+
+  it('parses cardinal labels', () => {
+    expect(parseCourseAngle('NW')).toBe(315)
+  })
+})
+
+describe('snapDegrees', () => {
+  it('snaps to step', () => {
+    expect(snapDegrees(47, 5)).toBe(45)
+    expect(snapDegrees(358, 5)).toBe(0)
+  })
+})
+
+describe('cardinal helpers', () => {
+  it('roundtrips cardinal through degrees', () => {
+    expect(degreesToCardinal(225)).toBe('SW')
+    expect(cardinalToDegrees('SW')).toBe(225)
+    expect(isCardinalDirection('nne')).toBe(true)
+  })
+})
+
+describe('pointerAngleToDegrees', () => {
+  it('returns 0 for north', () => {
+    expect(pointerAngleToDegrees(100, 50, 100, 100)).toBe(0)
+  })
+
+  it('returns 90 for east', () => {
+    expect(Math.round(pointerAngleToDegrees(150, 100, 100, 100))).toBe(90)
+  })
+})
+
+describe('normalizeCourseAngleString', () => {
+  it('keeps empty when allowed', () => {
+    expect(normalizeCourseAngleString('', { allowEmpty: true })).toBe('')
+  })
+
+  it('normalizes numeric course', () => {
+    expect(normalizeCourseAngleString('042')).toBe('42')
+    expect(formatCourseAngle(42, true)).toBe('042')
+  })
+})
+
+describe('normalizeWindDirectionString', () => {
+  it('preserves cardinal wind', () => {
+    expect(normalizeWindDirectionString('nw')).toBe('NW')
+  })
+
+  it('normalizes degree wind', () => {
+    expect(normalizeWindDirectionString('090')).toBe('90')
+  })
+})
@@ -0,0 +1,160 @@
+export const CARDINAL_DIRECTIONS = [
+  'N', 'NNE', 'NE', 'ENE', 'E', 'ESE', 'SE', 'SSE',
+  'S', 'SSW', 'SW', 'WSW', 'W', 'WNW', 'NW', 'NNW'
+] as const
+
+export type CardinalDirection = (typeof CARDINAL_DIRECTIONS)[number]
+export type CourseStep = 1 | 5 | 10
+
+const CARDINAL_SET = new Set<string>(CARDINAL_DIRECTIONS)
+
+export function isCardinalDirection(value: string): boolean {
+  return CARDINAL_SET.has(value.trim().toUpperCase())
+}
+
+export function cardinalToDegrees(label: string): number | null {
+  const upper = label.trim().toUpperCase()
+  const index = CARDINAL_DIRECTIONS.indexOf(upper as CardinalDirection)
+  if (index < 0) return null
+  return (index * 22.5) % 360
+}
+
+export function degreesToCardinal(degrees: number): CardinalDirection {
+  const normalized = ((degrees % 360) + 360) % 360
+  const index = Math.round(normalized / 22.5) % 16
+  return CARDINAL_DIRECTIONS[index]
+}
+
+export function snapDegrees(degrees: number, step: CourseStep): number {
+  const normalized = ((degrees % 360) + 360) % 360
+  const snapped = Math.round(normalized / step) * step
+  return snapped >= 360 ? 0 : snapped
+}
+
+/** 0° = north, clockwise (maritime compass). */
+export function pointerAngleToDegrees(
+  clientX: number,
+  clientY: number,
+  centerX: number,
+  centerY: number
+): number {
+  const dx = clientX - centerX
+  const dy = centerY - clientY
+  const radians = Math.atan2(dx, dy)
+  let degrees = (radians * 180) / Math.PI
+  if (degrees < 0) degrees += 360
+  return degrees
+}
+
+export function parseCourseAngle(value: string): number | null {
+  const trimmed = value.trim().replace(/°/g, '')
+  if (!trimmed) return null
+
+  const cardinalDeg = cardinalToDegrees(trimmed)
+  if (cardinalDeg !== null) return Math.round(cardinalDeg)
+
+  if (!/^\d{1,3}$/.test(trimmed)) return null
+  const degrees = parseInt(trimmed, 10)
+  if (Number.isNaN(degrees)) return null
+  if (degrees === 360) return 0
+  if (degrees < 0 || degrees > 360) return null
+  return degrees
+}
+
+export function formatCourseAngle(degrees: number, pad = false): string {
+  const normalized = ((Math.round(degrees) % 360) + 360) % 360
+  const text = String(normalized)
+  return pad ? text.padStart(3, '0') : text
+}
+
+export function normalizeCourseAngleString(
+  value: string,
+  options?: { allowEmpty?: boolean }
+): string {
+  const trimmed = value.trim()
+  if (!trimmed) return options?.allowEmpty ? '' : ''
+
+  if (isCardinalDirection(trimmed)) {
+    return trimmed.toUpperCase()
+  }
+
+  const parsed = parseCourseAngle(trimmed)
+  if (parsed === null) return trimmed
+  return formatCourseAngle(parsed)
+}
+
+export function normalizeWindDirectionString(value: string): string {
+  const trimmed = value.trim()
+  if (!trimmed) return ''
+
+  if (isCardinalDirection(trimmed)) {
+    return trimmed.toUpperCase()
+  }
+
+  const parsed = parseCourseAngle(trimmed)
+  if (parsed === null) return trimmed
+  return formatCourseAngle(parsed)
+}
+
+export function valueToDialDegrees(value: string, allowCardinal = false): number {
+  const parsed = parseCourseAngle(value)
+  if (parsed !== null) return parsed
+  if (allowCardinal && isCardinalDirection(value)) {
+    return cardinalToDegrees(value) ?? 0
+  }
+  return 0
+}
+
+export type CourseOutputMode = 'degrees' | 'cardinal'
+
+export function resolveCourseOutputMode(
+  value: string,
+  displayMode: 'degrees' | 'cardinal' | 'auto',
+  allowCardinal: boolean
+): CourseOutputMode {
+  if (!allowCardinal || displayMode === 'degrees') return 'degrees'
+  if (displayMode === 'cardinal') return 'cardinal'
+  return isCardinalDirection(value) ? 'cardinal' : 'degrees'
+}
+
+export function dialDegreesToStorageValue(
+  degrees: number,
+  mode: CourseOutputMode,
+  step: CourseStep
+): string {
+  const snapped = snapDegrees(degrees, step)
+  if (mode === 'cardinal') return degreesToCardinal(snapped)
+  return formatCourseAngle(snapped)
+}
+
+export function formatCourseDisplay(
+  value: string,
+  allowCardinal: boolean
+): string {
+  if (!value.trim()) return '—'
+  if (allowCardinal && isCardinalDirection(value)) return value.toUpperCase()
+  const parsed = parseCourseAngle(value)
+  if (parsed === null) return value
+  return `${formatCourseAngle(parsed, true)}°`
+}
+
+const STEP_STORAGE_KEY = 'kaptein-course-dial-step'
+
+export function loadCourseDialStep(): CourseStep {
+  try {
+    const raw = sessionStorage.getItem(STEP_STORAGE_KEY)
+    if (raw === '5') return 5
+    if (raw === '10') return 10
+  } catch {
+    /* ignore */
+  }
+  return 1
+}
+
+export function saveCourseDialStep(step: CourseStep): void {
+  try {
+    sessionStorage.setItem(STEP_STORAGE_KEY, String(step))
+  } catch {
+    /* ignore */
+  }
+}
@@ -0,0 +1,37 @@
+/** BCP 47 locales that use 24-hour clock for Intl formatting. */
+export function resolveIntlLocale(language?: string): string {
+  const lng = (language ?? 'en').toLowerCase()
+  return lng.startsWith('de') ? 'de-DE' : 'en-GB'
+}
+
+const APP_DATE_TIME_OPTIONS: Intl.DateTimeFormatOptions = {
+  year: 'numeric',
+  month: '2-digit',
+  day: '2-digit',
+  hour: '2-digit',
+  minute: '2-digit',
+  hour12: false
+}
+
+const APP_TIME_OPTIONS: Intl.DateTimeFormatOptions = {
+  hour: '2-digit',
+  minute: '2-digit',
+  hour12: false
+}
+
+function toDate(value: Date | string | number): Date | null {
+  const date = value instanceof Date ? value : new Date(value)
+  return Number.isNaN(date.getTime()) ? null : date
+}
+
+export function formatAppDateTime(value: Date | string | number, language?: string): string {
+  const date = toDate(value)
+  if (!date) return String(value)
+  return date.toLocaleString(resolveIntlLocale(language), APP_DATE_TIME_OPTIONS)
+}
+
+export function formatAppTime(value: Date | string | number, language?: string): string {
+  const date = toDate(value)
+  if (!date) return String(value)
+  return date.toLocaleTimeString(resolveIntlLocale(language), APP_TIME_OPTIONS)
+}
@@ -0,0 +1,62 @@
+import type { i18n as I18nInstance } from 'i18next'
+import { beforeEach, describe, expect, it, vi } from 'vitest'
+import { resolveIntlLocale } from './dateTimeFormat.js'
+import { initSeo, normalizeSeoLang, updatePageSeo } from './seo.js'
+
+const HTML_LANG = /^de|en$/
+
+function createMockI18n(language: string): I18nInstance {
+  return {
+    isInitialized: true,
+    language,
+    t: (key: string) => key,
+    on: vi.fn()
+  } as unknown as I18nInstance
+}
+
+describe('normalizeSeoLang', () => {
+  it.each([
+    ['de', 'de'],
+    ['de-DE', 'de'],
+    ['en', 'en'],
+    ['en-US', 'en'],
+    ['en-GB', 'en']
+  ] as const)('maps %s to short code %s', (input, expected) => {
+    expect(normalizeSeoLang(input)).toBe(expected)
+  })
+})
+
+describe('updatePageSeo html lang', () => {
+  beforeEach(() => {
+    document.documentElement.lang = 'de'
+    window.history.replaceState({}, '', '/')
+  })
+
+  it.each([
+    ['de', 'de'],
+    ['en', 'en'],
+    ['en-GB', 'en']
+  ] as const)('sets html lang to %s when i18n language is %s', (i18nLanguage, expectedLang) => {
+    initSeo(createMockI18n(i18nLanguage))
+    updatePageSeo()
+
+    expect(document.documentElement.lang).toBe(expectedLang)
+    expect(document.documentElement.lang).toMatch(HTML_LANG)
+  })
+})
+
+describe('resolveIntlLocale', () => {
+  it('uses full BCP 47 tags for Intl formatting only', () => {
+    expect(resolveIntlLocale('de')).toBe('de-DE')
+    expect(resolveIntlLocale('en')).toBe('en-GB')
+  })
+
+  it('does not reuse Intl locale tags for html lang', () => {
+    const intlLocale = resolveIntlLocale('en')
+    const htmlLang = normalizeSeoLang('en')
+
+    expect(intlLocale).toBe('en-GB')
+    expect(htmlLang).toBe('en')
+    expect(htmlLang).not.toBe(intlLocale)
+  })
+})
@@ -1,3 +1,8 @@
+import {
+  normalizeCourseAngleString,
+  normalizeWindDirectionString
+} from './courseAngle.js'
+
 export interface LogEventPayload {
  time: string
  mgk: string
@@ -17,6 +22,56 @@ export interface LogEventPayload {
  remarks: string
 }

+/** Local time as HH:MM (24-hour). */
+export function currentLocalTimeHHMM(date: Date = new Date()): string {
+  const hours = String(date.getHours()).padStart(2, '0')
+  const minutes = String(date.getMinutes()).padStart(2, '0')
+  return `${hours}:${minutes}`
+}
+
+/** Parse 24h or 12h (AM/PM) time strings to HH:MM. */
+export function parseTimeToHHMM(value: string): string | null {
+  const trimmed = value.trim()
+  if (!trimmed) return null
+
+  const amPm = trimmed.match(/^(\d{1,2}):(\d{2})(?::\d{2})?\s*(AM|PM)$/i)
+  if (amPm) {
+    let hours = parseInt(amPm[1], 10)
+    const minutes = parseInt(amPm[2], 10)
+    const isPm = amPm[3].toUpperCase() === 'PM'
+    if (hours < 1 || hours > 12 || minutes < 0 || minutes > 59) return null
+    if (hours === 12) hours = isPm ? 12 : 0
+    else if (isPm) hours += 12
+    return `${String(hours).padStart(2, '0')}:${String(minutes).padStart(2, '0')}`
+  }
+
+  const h24 = trimmed.match(/^(\d{1,2}):(\d{2})(?::\d{2})?$/)
+  if (h24) {
+    const hours = parseInt(h24[1], 10)
+    const minutes = parseInt(h24[2], 10)
+    if (hours >= 0 && hours <= 23 && minutes >= 0 && minutes <= 59) {
+      return `${String(hours).padStart(2, '0')}:${String(minutes).padStart(2, '0')}`
+    }
+  }
+
+  return null
+}
+
+export function isValidTimeHHMM(value: string): boolean {
+  return parseTimeToHHMM(value) !== null
+}
+
+export function splitTimeHHMM(value: string): { hours: string; minutes: string } {
+  const parsed = parseTimeToHHMM(value) ?? currentLocalTimeHHMM()
+  return { hours: parsed.slice(0, 2), minutes: parsed.slice(3, 5) }
+}
+
+export function joinTimeHHMM(hours: string, minutes: string): string {
+  const h = Math.min(23, Math.max(0, parseInt(hours, 10) || 0))
+  const m = Math.min(59, Math.max(0, parseInt(minutes, 10) || 0))
+  return `${String(h).padStart(2, '0')}:${String(m).padStart(2, '0')}`
+}
+
 const LOG_EVENT_FIELDS: (keyof LogEventPayload)[] = [
  'time', 'mgk', 'rwk', 'windPressure', 'windDirection', 'windStrength', 'seaState',
  'weatherIcon', 'current', 'heel', 'sailsOrMotor', 'logReading', 'distance',
@@ -28,11 +83,11 @@ export function normalizeLogEvent(event: Partial<LogEventPayload> | Record<strin
  const e = event as Record<string, unknown>
  const timeRaw = String(e.time ?? '').trim()
  const normalized: LogEventPayload = {
-    time: timeRaw.length >= 5 ? timeRaw.slice(0, 5) : timeRaw,
-    mgk: '',
-    rwk: '',
+    time: parseTimeToHHMM(timeRaw) ?? (timeRaw.length >= 5 ? timeRaw.slice(0, 5) : timeRaw),
+    mgk: normalizeCourseAngleString(String(e.mgk ?? ''), { allowEmpty: true }),
+    rwk: normalizeCourseAngleString(String(e.rwk ?? ''), { allowEmpty: true }),
    windPressure: '',
-    windDirection: '',
+    windDirection: normalizeWindDirectionString(String(e.windDirection ?? '')),
    windStrength: '',
    seaState: '',
    weatherIcon: '',
@@ -46,7 +101,7 @@ export function normalizeLogEvent(event: Partial<LogEventPayload> | Record<strin
    remarks: ''
  }
  for (const key of LOG_EVENT_FIELDS) {
-    if (key === 'time') continue
+    if (key === 'time' || key === 'mgk' || key === 'rwk' || key === 'windDirection') continue
    normalized[key] = String(e[key] ?? '').trim()
  }
  return normalized
@@ -21,5 +21,6 @@
    "erasableSyntaxOnly": true,
    "noFallthroughCasesInSwitch": true
  },
-  "include": ["src"]
+  "include": ["src"],
+  "exclude": ["src/**/*.test.ts"]
 }
@@ -1,3 +1,4 @@
+/// <reference types="vitest/config" />
 import { defineConfig } from 'vite'
 import react from '@vitejs/plugin-react'
 import { VitePWA } from 'vite-plugin-pwa'
@@ -20,6 +21,10 @@ function readAppVersion(): string {

 // https://vite.dev/config/
 export default defineConfig({
+  test: {
+    environment: 'happy-dom',
+    include: ['src/**/*.test.ts']
+  },
  define: {
    __APP_VERSION__: JSON.stringify(readAppVersion())
  },
@@ -42,6 +47,9 @@ export default defineConfig({
      srcDir: 'src',
      filename: 'sw.ts',
      registerType: 'prompt',
+      devOptions: {
+        enabled: false
+      },
      includeAssets: ['favicon.ico', 'logo.png'],
      injectManifest: {
        globPatterns: ['**/*.{js,css,html,ico,png,svg,woff2,webmanifest}']
@@ -147,7 +147,7 @@
    .features {
      display: grid;
      grid-template-columns: 1fr 1fr;
-      gap: 2.5mm 6mm;
+      gap: 1.8mm 6mm;
      flex-shrink: 0;
      position: relative;
      z-index: 1;
@@ -158,7 +158,7 @@
      gap: 2.5mm;
      align-items: flex-start;
      font-size: 10.5pt;
-      line-height: 1.4;
+      line-height: 1.28;
      color: #e2e8f0;
    }

@@ -329,6 +329,7 @@
      <div class="feature"><span class="feature-icon">✦</span><span>Logbuch mit Freunden teilen</span></div>
      <div class="feature"><span class="feature-icon">✦</span><span>Beliebig viele Schiffe und Logbücher</span></div>
      <div class="feature"><span class="feature-icon">✦</span><span class="lang-list"><span class="lang-item"><svg class="feature-flag" viewBox="0 0 5 3" xmlns="http://www.w3.org/2000/svg" aria-hidden="true"><rect width="5" height="1" fill="#000"/><rect y="1" width="5" height="1" fill="#D00"/><rect y="2" width="5" height="1" fill="#FFCE00"/></svg>Deutsch</span><span class="lang-sep">&amp;</span><span class="lang-item"><svg class="feature-flag" viewBox="0 0 60 30" xmlns="http://www.w3.org/2000/svg" aria-hidden="true"><clipPath id="gb-a"><path d="M0 0v30h60V0z"/></clipPath><clipPath id="gb-b"><path d="M30 15h30v15zv15H0z"/></clipPath><g clip-path="url(#gb-a)"><path d="M0 0v30h60V0z" fill="#012169"/><path d="M0 0l60 30m0-30L0 30" stroke="#fff" stroke-width="6"/><path d="M0 0l60 30m0-30L0 30" clip-path="url(#gb-b)" stroke="#C8102E" stroke-width="4"/><path d="M30 0v30M0 15h60" stroke="#fff" stroke-width="10"/><path d="M30 0v30M0 15h60" stroke="#C8102E" stroke-width="6"/></g></svg>Englisch</span></span></div>
+      <div class="feature"><span class="feature-icon">✦</span><span>3 Themes, jeweils mit heller und dunkler Variante</span></div>
      <div class="feature"><span class="feature-icon">✦</span><span>Crafted in Kiel.Sailing.City.</span></div>
    </section>

@@ -0,0 +1,296 @@
+# Implementierungsplan: 360°-Kompass-Dial für Kursangaben
+
+**Status:** Implementiert (Branch `feat/compass-course-dial`)  
+**Bezug:** Ereignisprotokoll (`LogEntryEditor`), Felder MgK / rwK / Windrichtung  
+**Vorbild im Projekt:** `EventTimeInput24h` (spezialisierte Eingabe + Text-Fallback, keine API-Änderung)
+
+---
+
+## 1. Ziel und Nicht-Ziele
+
+### Ziel
+- Eingabe von Kurswinkeln (0°–360°) über einen **mobil tauglichen Kompass-Ring** (Drag/Tap).
+- **Hybrid-Eingabe:** Dial + numerisches Feld (wie bei der Uhrzeit).
+- Einheitliche Normalisierung (`000`–`360`, Speicherung als String ohne `°`).
+- Wiederverwendbare Komponente für **MgK**, **rwK** und optional **Wind** (Gradmodus).
+
+### Nicht-Ziele (v1)
+- Keine Änderung am Server-Schema oder Verschlüsselungsformat.
+- Keine Device-Orientation / echter Kompass des Geräts (optional Phase 2).
+- Kein Ersatz der Ablenkungstabelle (`DeviationForm`) – bleibt 10°-Raster.
+- Windrichtung bleibt **kompatibel** mit bestehenden Kardinalwerten (`N`, `NNE`, …) aus Wetter-API.
+
+---
+
+## 2. Ist-Analyse
+
+| Feld | Speicherformat | UI heute | Besonderheit |
+|------|----------------|----------|--------------|
+| `mgk` | String, z. B. `"042"` | Text `placeholder="e.g. 180"` | Grad, PDF/CSV mit `°` |
+| `rwk` | String, z. B. `"038"` | Text | Grad |
+| `windDirection` | String | Text | Oft **Kardinal** (`NW`) via OpenWeather; manuell auch Grad möglich |
+
+**Betroffene Dateien (Lesen/Schreiben, unverändert speichern):**
+- `client/src/components/LogEntryEditor.tsx` – Formular + Tabelle
+- `client/src/utils/logEntryPayload.ts` – `normalizeLogEvent`
+- `client/src/services/pdfExport.ts`, `csvExport.ts` – Export
+- `client/src/services/demoLogbookData.ts` – Demo-Daten
+
+**Referenz-Pattern:** `EventTimeInput24h.tsx` + `parseTimeToHHMM` / `joinTimeHHMM` in `logEntryPayload.ts`.
+
+---
+
+## 3. Architektur
+
+```
+client/src/utils/courseAngle.ts          # Parsing, Normalisierung, Winkel-Mathe
+client/src/components/CourseDialInput.tsx # UI: SVG-Ring + Zahleneingabe
+client/src/components/CourseDialField.tsx # Label + Fehler + Modus (optional)
+client/src/App.css                       # .course-dial-* Styles
+client/src/components/LogEntryEditor.tsx # Integration MgK/rwk/Wind
+client/src/i18n/locales/{de,en}.json     # Strings
+```
+
+### 3.1 Utility-Schicht `courseAngle.ts`
+
+| Funktion | Verhalten |
+|----------|-----------|
+| `parseCourseAngle(value)` | `"185"`, `"185°"`, `" 042 "` → `185` oder `null` |
+| `formatCourseAngle(degrees, pad?)` | `185` → `"185"` oder `"185"` / `"042"` (pad optional) |
+| `normalizeCourseAngleString(value)` | Parse oder Fallback; für `normalizeLogEvent` |
+| `pointerAngleToDegrees(clientX, clientY, cx, cy)` | `atan2`, 0° = Nord, Uhrzeigersinn maritim |
+| `degreesToCardinal(deg)` | 16-Sektoren (bestehende Logik aus Wetter-Import) |
+| `cardinalToDegrees(label)` | Reverse für Dial-Anzeige bei Kardinal-Strings |
+| `snapDegrees(deg, step)` | `step` 1, 5 oder 10 |
+
+**Konvention:** 0° = Nord, Winkel im Uhrzeigersinn (Kompass/Navigation), konsistent mit `wind.deg` in `LogEntryEditor`.
+
+### 3.2 Komponente `CourseDialInput`
+
+**Props:**
+```ts
+interface CourseDialInputProps {
+  value: string                    // roher Formularwert
+  onChange: (value: string) => void
+  disabled?: boolean
+  step?: 1 | 5 | 10                // Standard: 1
+  allowCardinal?: boolean          // Wind: true → Anzeige/Export Kardinal optional
+  displayMode?: 'degrees' | 'cardinal' | 'auto'
+  'aria-label': string
+  id?: string
+}
+```
+
+**UI-Aufbau:**
+1. **SVG-Ring** (ca. 200–240 px Desktop, min. 160 px Mobile)
+   - Gradmarken alle 30° (Labels 000, 030, … 330)
+   - Zeiger / Highlight-Bogen bei aktuellem Wert
+   - `touch-action: none` auf Ringfläche
+2. **Zentrum:** große Anzeige `185°` oder `NW`
+3. **Darunter:** `<input type="text" inputMode="numeric">` mit Validierung on blur
+4. **Fein/Grob-Toggle** (optional): 1° / 5° / 10° (lokal in `sessionStorage` merken)
+
+**Interaktion:**
+- `pointerdown` → `setPointerCapture` → `pointermove` → Winkel berechnen → snappen → `onChange`
+- Tap auf Ring: Winkel zum Tap-Punkt
+- Tastatur am Zahleneingang: Pfeiltasten ±step (wenn fokussiert)
+
+**Barrierefreiheit:**
+- `role="slider"`, `aria-valuemin={0}`, `aria-valuemax={360}`, `aria-valuenow`, `aria-label`
+- Zahleneingang bleibt voll bedienbar ohne Dial
+- Fokus-Reihenfolge: Input vor Dial oder umgekehrt (Input zuerst empfohlen)
+
+### 3.3 Windrichtung: Modus-Entscheidung
+
+**Empfehlung v1:** Zwei Darstellungsmodi, **ein Speicher-String**:
+
+| Modus | Speicher | Dial |
+|-------|----------|------|
+| Grad | `"225"` | Standard-Dial |
+| Kardinal | `"SW"` | Dial zeigt Sektor-Mitte (225°), Änderung schreibt Kardinal |
+
+- Wetter-Import (`handleFetchWeather`) setzt weiter Kardinal → Dial mappt auf Sektor.
+- Nutzer kann auf Grad umschalten (kleiner Link „Als Grad“ / Toggle).
+- `normalizeLogEvent`: erkennt Kardinal vs. Zahl, keine erzwungene Konvertierung beim Laden.
+
+---
+
+## 4. Integration `LogEntryEditor`
+
+### 4.1 Layout (mobil-first)
+
+**Problem:** Formular ist bereits dicht (`form-grid`).
+
+**Lösung:** Kurs-Block als **eigene Sektion** „Kurs“ mit Tabs:
+
+```
+[ MgK ] [ rwK ]     ← Tab-Leiste (Segmented Control)
+┌─────────────────────────┐
+│     CourseDialInput      │  ← ein Dial, Wert je Tab
+│     + Zahleneingang      │
+└─────────────────────────┘
+```
+
+- Ein Dial, State wechselt mit Tab (`activeCourseField: 'mgk' | 'rwk'`).
+- Spart Platz; MgK/rwk werden nacheinander gesetzt (typischer Workflow).
+
+**Windrichtung:** eigene Zeile unter Wetter-Grid; kompakter Dial (kleinere `size="sm"`) oder ausklappbar „Wind am Kompass setzen“.
+
+### 4.2 Ersetzungen
+
+| Alt | Neu |
+|-----|-----|
+| `<input>` MgK | `<CourseDialInput value={evMgk} … />` |
+| `<input>` rwK | Tab + gleicher Dial |
+| `<input>` Wind | `<CourseDialInput allowCardinal displayMode="auto" … />` |
+
+### 4.3 `normalizeLogEvent`
+
+```ts
+mgk: normalizeCourseAngleString(e.mgk, { allowEmpty: true }),
+rwk: normalizeCourseAngleString(e.rwk, { allowEmpty: true }),
+windDirection: normalizeWindDirectionString(e.windDirection), // Kardinal ODER Grad-String
+```
+
+Bestehende Demo- und Export-Daten bleiben gültig.
+
+---
+
+## 5. Styling (`App.css`)
+
+- `.course-dial` – Container, max-width, zentriert
+- `.course-dial__svg` – `width: 100%; aspect-ratio: 1`
+- `.course-dial__ring` – stroke, hover/active
+- `.course-dial__needle` – transform `rotate(${deg}deg)`
+- `.course-dial__value` – tabular-nums, große Schrift
+- `.course-dial__input` – wie `.time-input-24h`
+- `.course-dial-tabs` – Segmented Control (bestehende `--app-accent-*` Tokens)
+- **Responsive:** `@media (max-width: 640px)` – Dial max  min(72vw, 220px); Touch-Target Ring ≥ 44 px
+
+**Theme:** `currentColor` / CSS-Variablen (`--app-text`, `--app-accent-light`) – Dark/Light via `themes.css`.
+
+---
+
+## 6. Internationalisierung
+
+Neue Keys unter `logs.*`:
+
+| Key | DE | EN |
+|-----|----|----|
+| `course_dial_hint` | Am Ring drehen oder Grad eingeben | Drag the ring or enter degrees |
+| `course_step_fine` | 1° | 1° |
+| `course_step_medium` | 5° | 5° |
+| `course_step_coarse` | 10° | 10° |
+| `course_tab_mgk` | MgK | MgK |
+| `course_tab_rwk` | rwK | rwK |
+| `course_invalid` | Ungültiger Kurs (0–360) | Invalid course (0–360) |
+| `wind_mode_cardinal` | Kardinal | Cardinal |
+| `wind_mode_degrees` | Grad | Degrees |
+
+---
+
+## 7. Phasen und Aufwand
+
+### Phase A – Fundament (1–1,5 Tage)
+- [ ] `courseAngle.ts` + Unit-Tests (Vitest einrichten falls noch nicht vorhanden)
+- [ ] `CourseDialInput` (nur Grad, step 1/5, Pointer + Input)
+- [ ] CSS Grundlayout
+- [ ] Story/manuell: isoliert in kleiner Demo-Route oder Storybook (optional)
+
+**Akzeptanz:** Dial setzt 0–360, Input synchron, Mobile Chrome/Safari getestet.
+
+### Phase B – LogEntryEditor MgK/rwk (1 Tag)
+- [ ] Tab-UI MgK / rwK
+- [ ] Integration, `normalizeLogEvent`
+- [ ] Read-only: Dial disabled, Wert nur Anzeige
+
+**Akzeptanz:** Ereignis speichern/laden/PDF unverändert korrekt; Skipper-Signatur-Flow unberührt.
+
+### Phase C – Windrichtung (0,5–1 Tag)
+- [ ] `allowCardinal` / `displayMode`
+- [ ] Wetter-Import kompatibel
+- [ ] Toggle Kardinal ↔ Grad
+
+**Akzeptanz:** API-Wind `NW` zeigt Dial auf NW; manuelle Grad-Eingabe möglich.
+
+### Phase D – Polish (1–1,5 Tage)
+- [ ] Fein/Grob-Schritte + Persistenz
+- [ ] Tastatur (Pfeiltasten), Fokus-Stile
+- [ ] Reduzierte Bewegung (`prefers-reduced-motion`: nur Input, Dial statisch)
+- [ ] Plausible-Event optional: `Course Dial Used` (nur wenn Analytics gewünscht)
+- [ ] Dokumentation in `docs/plausible-events.md` falls Event
+
+### Phase E – QA & Edge Cases (0,5 Tag)
+- [ ] Leerer Wert, 360 → 0 oder 360 (festlegen: **360 als Eingabe → speichern `360` oder `000`** – Empfehlung: intern 0–359 speichern, Anzeige 360 = 0)
+- [ ] Sehr lange Formulare auf kleinen Screens (Scroll, kein Layout-Sprung)
+- [ ] Offline/PWA, kein Regression bei `buildLogEntryPayload` / Signatur-Hash
+
+**Gesamtaufwand:** ca. **4–5 Entwicklertage** für vollständige Implementierung inkl. Wind + A11y + QA.
+
+---
+
+## 8. Tests
+
+### Unit (`courseAngle.ts`)
+- Parse: `"042"`, `"360"`, `"999"` (invalid), `"NW"` (wind helper)
+- `pointerAngleToDegrees` mit festen Koordinaten
+- `snapDegrees(47, 5)` → 45
+- `degreesToCardinal` / `cardinalToDegrees` Roundtrip
+
+### Komponente (Testing Library)
+- `onChange` bei simuliertem Pointer-Event (oder direktem `setValue` via Input)
+- Disabled-State
+- `aria-valuenow` aktualisiert
+
+### Manuell / UAT
+| # | Schritt | Erwartung |
+|---|---------|-----------|
+| 1 | Neues Ereignis, MgK am Dial auf 090 | Tabelle zeigt `90°`, PDF/CSV `90` |
+| 2 | rwK per Tastatur `270` | Dial zeigt West |
+| 3 | Wetter laden | Wind `NW`, Dial passend |
+| 4 | iPhone Safari, Daumen-Drag | Kein Scroll-Leaken, Wert stabil |
+| 5 | Nur Tastatur | Input allein speicherbar |
+| 6 | Bestehenden Eintrag bearbeiten | Alte Werte korrekt im Dial |
+
+---
+
+## 9. Risiken und Mitigationen
+
+| Risiko | Mitigation |
+|--------|------------|
+| Dial zu groß auf Mobile | Tabs + max-width; Wind einklappbar |
+| Scroll vs. Drag | `touch-action: none` nur am Ring |
+| Kardinal/Grad-Inkonsistenz | `displayMode="auto"`, kein Silent-Overwrite |
+| Signatur-Hash ändert sich | Nur Normalisierung die bereits gültige Strings erlaubt; keine Rundung beim Speichern ohne Nutzeraktion |
+| Performance bei vielen Events | Dial nur im Formular, nicht in Tabelle |
+
+---
+
+## 10. Optionale Erweiterungen (Post-v1)
+
+1. **MgK → rwK aus Ablenkungstabelle** vorschlagen (Lookup `deviations[roundedMgK]`).
+2. **DeviceOrientation** für Ring-Ausrichtung (mit Permission-Hinweis).
+3. **Haptik** `navigator.vibrate(10)` bei Snap (Android).
+4. **DeviationForm:** visueller Kompass statt nur Grid (separate Story).
+
+---
+
+## 11. Abnahmekriterien (Definition of Done)
+
+- [ ] MgK und rwK im Ereignisformular per Dial + Input editierbar (Desktop + Mobile).
+- [ ] Windrichtung: Dial + Kardinal/Grad kompatibel mit Wetter-Import.
+- [ ] Keine Backend-/Migrations-Änderung; bestehende Logbücher laden unverändert.
+- [ ] PDF/CSV/Signatur-Verhalten identisch zu heute (nur Darstellung/Eingabe verbessert).
+- [ ] WCAG: Slider + Input bedienbar, `prefers-reduced-motion` berücksichtigt.
+- [ ] DE/EN vollständig übersetzt.
+
+---
+
+## 12. Empfohlene Umsetzungsreihenfolge (Commits)
+
+1. `feat(course): add courseAngle utilities and tests`
+2. `feat(course): add CourseDialInput component and styles`
+3. `feat(logs): integrate compass dial for MgK and rwK`
+4. `feat(logs): wind direction dial with cardinal support`
+5. `fix(logs): a11y and reduced-motion for course dial`
+6. `docs: compass course dial plan and plausible event` (optional)
@@ -131,4 +131,41 @@ router.delete('/:id', async (req: any, res) => {
  }
 })

+// 5. Update a logbook title
+router.put('/:id', async (req: any, res) => {
+  try {
+    const { id } = req.params
+    const { encryptedTitle } = req.body
+
+    if (!encryptedTitle) {
+      return res.status(400).json({ error: 'encryptedTitle is required' })
+    }
+
+    const logbook = await prisma.logbook.findUnique({
+      where: { id }
+    })
+
+    if (!logbook) {
+      return res.status(404).json({ error: 'Logbook not found' })
+    }
+
+    if (logbook.userId !== req.userId) {
+      return res.status(403).json({ error: 'Forbidden: Access denied' })
+    }
+
+    const updatedLogbook = await prisma.logbook.update({
+      where: { id },
+      data: {
+        encryptedTitle,
+        updatedAt: new Date()
+      }
+    })
+
+    return res.json(updatedLogbook)
+  } catch (error: any) {
+    console.error('Error updating logbook:', error)
+    return res.status(500).json({ error: error.message || 'Internal server error' })
+  }
+})
+
 export default router
@@ -46,7 +46,7 @@ router.post('/push', async (req: any, res) => {
        // Authorize: Check if logbook belongs to user
        // Exception: If action is create logbook, the logbook might not exist yet,
        // so we authorize based on user creating a logbook with their userId.
-        if (type === 'logbook' && action === 'create') {
+        if (type === 'logbook' && (action === 'create' || action === 'update')) {
          const existing = await prisma.logbook.findUnique({
            where: { id: logbookId }
          })
@@ -69,9 +69,9 @@ router.post('/push', async (req: any, res) => {
            },
            update: {
              encryptedTitle: parsed.encryptedTitle,
-              encryptedKey: parsed.encryptedKey || null,
-              iv: parsed.iv || null,
-              tag: parsed.tag || null,
+              ...(parsed.encryptedKey !== undefined ? { encryptedKey: parsed.encryptedKey } : {}),
+              ...(parsed.iv !== undefined ? { iv: parsed.iv } : {}),
+              ...(parsed.tag !== undefined ? { tag: parsed.tag } : {}),
              updatedAt: itemUpdatedAt
            }
          })
Author	SHA1	Message	Date
elpatron	b86e5a15d6	chore: release v0.1.0.53	2026-05-31 12:16:02 +02:00
elpatron	eac86ec655	README: Neue Features und klare Trennung Profil vs. Logbuch. Dokumentiert Kompass-Dial, Benutzerprofil, Feedback/Ntfy, Demo-URL, Tests und aktualisierte Env-Variablen. Co-authored-by: Cursor <cursoragent@cursor.com>	2026-05-31 12:15:46 +02:00
elpatron	a6331bea1a	OWM-API-Schlüssel explizit über aktive User-ID laden. Wetter-Abruf nutzt getOwmApiKeyForActiveUser(), damit namespaced Keys nicht am fehlenden active_userid vorbeilaufen. Co-authored-by: Cursor <cursoragent@cursor.com>	2026-05-31 12:14:43 +02:00
elpatron	ae89b131a1	chore: release v0.1.0.52	2026-05-31 12:12:15 +02:00
elpatron	3fdea31c4a	Update beta flyer styles: Adjust feature gap to 1.8mm and line height to 1.28 for improved layout consistency. Update PDF file to reflect changes.	2026-05-31 12:09:34 +02:00
elpatron	04d114c315	Marketing-Flyer: Themes mit Hell/Dunkel-Varianten erwähnen. Co-authored-by: Cursor <cursoragent@cursor.com>	2026-05-31 12:07:37 +02:00
elpatron	3fa66f044c	Korrigiere Label-Ausrichtung im Backup-Panel. Labels waren durch text-align:center auf #root zentriert, Inputs linksbündig. Formularfelder nutzen nun block-Labels und konsistenten Abstand. Co-authored-by: Cursor <cursoragent@cursor.com>	2026-05-31 12:06:18 +02:00
elpatron	a84c611402	Verschiebe benutzerbezogene Einstellungen ins Benutzerprofil. Theme, Farbschema, OWM-Schlüssel, Push, PWA und App-Tour liegen nun im Profil mit pro-User-localStorage. Der Logbuch-Tab fokussiert Teilen, Backup und Crew. Co-authored-by: Cursor <cursoragent@cursor.com>	2026-05-31 12:01:08 +02:00
elpatron	f12b9b2a1a	chore: release v0.1.0.51	2026-05-31 11:52:20 +02:00
elpatron	34914b4f19	fix(ui): Segel-Picker-Layout und Formular-Reset korrigieren Flex-Layout für Pills und Toggle wiederherstellen und den Einklapp-Zustand beim Leeren des Ereignisformulars zurücksetzen. Co-authored-by: Cursor <cursoragent@cursor.com>	2026-05-31 11:52:10 +02:00
elpatron	d9fa8c0edf	chore: release v0.1.0.50	2026-05-31 11:50:39 +02:00
elpatron	adf02acd45	fix(ui): Segel-Picker auf Mobile weiter verdichten Einklappbare Badge-Liste bei vielen Segeln, kompaktere Pills und aktive Auswahl bleibt oben sichtbar. Co-authored-by: Cursor <cursoragent@cursor.com>	2026-05-31 11:50:23 +02:00
elpatron	3992db9d61	fix(ui): Besegelungs-Badges auf Mobile platzsparender anordnen Die Segel-Pills nutzen die volle Formularbreite und wrappen kompakt, statt in der halben Grid-Spalte untereinander zu stapeln. Co-authored-by: Cursor <cursoragent@cursor.com>	2026-05-31 11:48:30 +02:00
elpatron	51f6a1b291	chore: release v0.1.0.49	2026-05-31 11:42:37 +02:00
elpatron	0b07d8b3d3	feat(auth): Hilfe-Button auf Login öffnet Hinweise-Modal Ersetzt den toten #help-Link durch einen Button, der dasselbe Hinweise- und Haftungsausschluss-Modal wie in der App anzeigt. Co-authored-by: Cursor <cursoragent@cursor.com>	2026-05-31 11:42:28 +02:00
elpatron	a07e033e62	copy(i18n): Login-Tagline persönlicher formulieren „Dein sicheres …“ statt „Sicheres …“ auf der Anmeldeseite. Co-authored-by: Cursor <cursoragent@cursor.com>	2026-05-31 11:40:06 +02:00
elpatron	bbe63dfb47	chore: release v0.1.0.48	2026-05-31 11:38:03 +02:00
elpatron	57f63ad486	fix(auth): Session-Restore erst mit vollständiger lokaler Session Stellt hasUnlockedLocalSession für UI-Wiederherstellung und enforceUnlockedSession wieder her; persistSessionUserId setzt userId nur bei Angabe in der Server-Antwort. Co-authored-by: Cursor <cursoragent@cursor.com>	2026-05-31 11:37:50 +02:00
elpatron	728c40f936	chore: release v0.1.0.47	2026-05-31 11:35:51 +02:00
elpatron	72cbad8d5e	fix(auth): Session-Wiederherstellung nicht an active_userid koppeln Trennt hasUnlockedLocalCrypto (Master-Key + Username) von hasUnlockedLocalSession (+ userId für API), damit ein gültiges Server-Cookie ohne userId in der Antwort keinen fälschlichen Logout auslöst. Co-authored-by: Cursor <cursoragent@cursor.com>	2026-05-31 11:35:17 +02:00
elpatron	15f2172a38	fix: ungenutzten getActiveMasterKey-Import entfernen Behebt TS6133 und schlägt fehlenden Docker-Frontend-Build wieder frei. Co-authored-by: Cursor <cursoragent@cursor.com>	2026-05-31 11:34:01 +02:00
elpatron	e2e038f2d6	chore: release v0.1.0.46	2026-05-31 11:30:47 +02:00
elpatron	634eb622fd	fix(pwa): weiße Seite nach Android-Neustart ohne Master-Key vermeiden Erzwingt Login wenn nur die HTTP-Session übrig ist, begrenzt SW-Reloads, fängt Bootstrap-/Render-Fehler ab und stabilisiert den PWA-Kaltstart. Co-authored-by: Cursor <cursoragent@cursor.com>	2026-05-31 11:30:37 +02:00
elpatron	04b822b263	fix(logs): Wind- und Kurs-Dial auf gleiche Größe bringen Der Wind-Dial nutzte size="sm" (220px), der Kurs-Dial md (260px). Co-authored-by: Cursor <cursoragent@cursor.com>	2026-05-31 11:26:56 +02:00
elpatron	ee60d5fda3	fix(dev): veralteten PWA-Cache bereinigen, damit i18n-Labels laden Stale Service-Worker-Precache konnte Vite-Module und Locale-Bundles überlagern, sodass Kompass-Dial-Texte als Roh-i18n-Keys erschienen. Co-authored-by: Cursor <cursoragent@cursor.com>	2026-05-31 11:25:10 +02:00
elpatron	3a7d244433	fix(logs): Kompass-Dial-Locales und UI-Labels vervollständigen Ergänzt fehlende i18n-Keys (Himmelsrichtungen, Platzhalter, Schrittweite) und zeigt Validierungsfehler im Kurs-Dial. Co-authored-by: Cursor <cursoragent@cursor.com>	2026-05-31 11:12:43 +02:00
elpatron	9e03fcda0a	feat(logs): Kompass-Dial für Kurs- und Windeingabe Ersetzt Textfelder für MgK, rwK und Wind durch einen mobilen Kompass-Ring, normalisiert Kurswinkel beim Speichern und führt Vitest mit Regressionstests für html lang ein. Co-authored-by: Cursor <cursoragent@cursor.com>	2026-05-31 11:08:36 +02:00
elpatron	34c7d2d65c	fix(logs): 24h-Uhrzeit per Dropdown und konsistentes html lang Ersetzt natives type=time (AM/PM je nach System) durch Stunde/Minute-Auswahl, wandelt 12h-Werte beim Laden um und stellt html lang auf de/en zurück. Co-authored-by: Cursor <cursoragent@cursor.com>	2026-05-31 11:01:03 +02:00
elpatron	658bc6c0c9	feat(logs): Ereignis-Uhrzeit vorbelegen und 24h-Format vereinheitlichen Neue Ereignisse starten mit der aktuellen Uhrzeit; Datums-/Zeitanzeigen und Zeit-Picker nutzen durchgängig das 24-Stunden-Format. Co-authored-by: Cursor <cursoragent@cursor.com>	2026-05-31 10:57:47 +02:00
elpatron	dee2f7b95b	chore: release v0.1.0.45	2026-05-31 10:50:13 +02:00
elpatron	4eaf5d7f30	fix(dashboard): Löschbutton und Badge auf Logbuch-Karten trennen Aktions-Spalte im Flex-Layout statt absoluter Positionierung, mit responsivem Stacking auf schmalen Viewports. Co-authored-by: Cursor <cursoragent@cursor.com>	2026-05-31 10:49:55 +02:00
elpatron	257bca14d1	feat(dashboard): Logbuch-Titel per Inline-Bearbeitung umbenennen Ersetzt Umbenennen-Button und Modal durch Klick auf den Kartentitel. Co-authored-by: Cursor <cursoragent@cursor.com>	2026-05-31 10:48:22 +02:00
elpatron	917fb92d85	feat: add logbook title editing with E2E encryption and sync support	2026-05-31 10:45:36 +02:00
@@ -1 +1 @@
 .1.0.45
 .1.0.54