feat(logs): Maschinenstunden pro Reisetag und Verbrauch pro Stunde

Maschinenstunden sind im Journal erfassbar; der Kraftstoffverbrauch pro Maschinenstunde wird aus Tagesverbrauch und Maschinenstunden berechnet und in Journal sowie Statistik als Read-only angezeigt.

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

client/src/i18n/locales/de.json

@@ -205,6 +205,8 @@
       "event_heel": "Krängung (°)",
       "event_sails": "Segelführung / Motor",
       "motor_propulsion": "Maschinenfahrt",
+      "motor_hours": "Maschinenstunden (gesamt)",
+      "fuel_per_motor_hour": "Verbrauch pro Maschinenstunde",
       "event_distance": "Distanz (sm)",
       "export_csv": "CSV herunterladen",
       "share_csv": "CSV teilen",
@@ -479,6 +481,9 @@
       "travel_days": "Reisetage",
       "sail_distance": "Unter Segel",
       "motor_distance": "Maschinenfahrt",
+      "motor_hours_total": "Maschinenstunden gesamt",
+      "daily_motor_hours": "Maschinenstunden pro Reisetag",
+      "avg_motor_hours": "Ø Maschinenstunden pro Reisetag",
       "unknown_propulsion": "Unbekannt",
       "fuel_total": "Kraftstoff gesamt",
       "water_total": "Wasser gesamt",
@@ -492,9 +497,12 @@
       "avg_fuel": "Ø Kraftstoff",
       "avg_water": "Ø Wasser",
       "fuel_per_nm": "Kraftstoff pro sm",
+      "fuel_per_motor_hour": "Kraftstoff pro Maschinenstunde",
+      "daily_fuel_per_motor_hour": "Kraftstoffverbrauch pro Maschinenstunde je Reisetag",
       "fuel_legend": "Kraftstoff",
       "water_legend": "Wasser",
       "unit_nm": "sm",
+      "unit_h": "h",
       "unit_l": "L",
       "day_label": "Tag {{day}}",
       "account_logbooks": "Logbücher im Überblick",

client/src/i18n/locales/en.json

@@ -205,6 +205,8 @@
       "event_heel": "Heel Angle (°)",
       "event_sails": "Sails / Motor Status",
       "motor_propulsion": "Engine Propulsion",
+      "motor_hours": "Engine hours (total)",
+      "fuel_per_motor_hour": "Consumption per engine hour",
       "event_distance": "Distance (nm)",
       "export_csv": "Download CSV",
       "share_csv": "Share CSV",
@@ -479,6 +481,9 @@
       "travel_days": "Travel days",
       "sail_distance": "Under sail",
       "motor_distance": "Engine",
+      "motor_hours_total": "Total engine hours",
+      "daily_motor_hours": "Engine hours per travel day",
+      "avg_motor_hours": "Avg. engine hours per travel day",
       "unknown_propulsion": "Unknown",
       "fuel_total": "Total fuel",
       "water_total": "Total water",
@@ -492,9 +497,12 @@
       "avg_fuel": "Avg. fuel",
       "avg_water": "Avg. water",
       "fuel_per_nm": "Fuel per nm",
+      "fuel_per_motor_hour": "Fuel per engine hour",
+      "daily_fuel_per_motor_hour": "Fuel consumption per engine hour by travel day",
       "fuel_legend": "Fuel",
       "water_legend": "Water",
       "unit_nm": "nm",
+      "unit_h": "h",
       "unit_l": "L",
       "day_label": "Day {{day}}",
       "account_logbooks": "Logbooks overview",