feat: dnevni unosi i svi dani u mjesecnom izvjestaju servisera

- Dodan model MonthlyServicerDayEntry s automatskom popunom prema tipu:
  office (08:00-16:00, Zagreb ured), vacation i sick_leave (8h bez vremena)
- Migracija 0034_monthlyservicerdayentry za novu tablicu s UniqueConstraint
- Novi ViewSet + serializer + endpoint fleet/monthly-servicer-day-entries/
  (upsert: POST za novi dan ili update za isti dan ako vec postoji)
- Backend DOCX report (_build_monthly_servicer_report_rows) sad generira
  redak za SVAKI dan u mjesecu: taskovi > rucni unos > prazan red
- TaskCalendarWidget potpuno prepisan bez mojibake znakova
  (zamjena UTF-8 specijalnih znakova ASCII ekvivalentima u string literalima)
- Tablica izvjestaja servisera: klikom na red bez naloga otvara se overlay
  s tri opcije (Rad u uredu / Bolovanje / Godisnji)
- TaskCalendarPortal: dodan calendarWorkOrders computed (svi statusi)
  kako bi report imao potpune podatke o radnom vremenu
- fetchMonthlyServicerEntries i upsertMonthlyServicerEntry u store-u

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

backend/modules/fleet/migrations/0034_monthlyservicerdayentry.py

@@ -0,0 +1,45 @@
+# Generated by Django 5.2.15 on 2026-07-31 12:30
+
+import uuid
+from decimal import Decimal
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('fleet', '0033_emaildispatchlog'),
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='MonthlyServicerDayEntry',
+            fields=[
+                ('id', models.UUIDField(default=uuid.uuid4, editable=False, help_text='Unikatni identifikator entiteta (UUID).', primary_key=True, serialize=False)),
+                ('created_at', models.DateTimeField(auto_now_add=True, verbose_name='Vrijeme kreiranja')),
+                ('updated_at', models.DateTimeField(auto_now=True, verbose_name='Vrijeme zadnje izmjene')),
+                ('is_active', models.BooleanField(default=True, verbose_name='Aktivan zapis')),
+                ('entry_date', models.DateField(db_index=True, verbose_name='Datum')),
+                ('entry_type', models.CharField(choices=[('office', 'Rad u uredu'), ('sick_leave', 'Bolovanje'), ('vacation', 'Godišnji odmor')], max_length=24, verbose_name='Vrsta unosa')),
+                ('description', models.CharField(blank=True, max_length=255, verbose_name='Opis posla')),
+                ('location', models.CharField(blank=True, max_length=255, verbose_name='Mjesto rada')),
+                ('start_time', models.TimeField(blank=True, null=True, verbose_name='Početak rada')),
+                ('end_time', models.TimeField(blank=True, null=True, verbose_name='Kraj rada')),
+                ('regular_hours', models.DecimalField(decimal_places=2, default=Decimal('8.00'), max_digits=5, verbose_name='Redovan rad')),
+                ('overtime_hours', models.DecimalField(decimal_places=2, default=Decimal('0.00'), max_digits=5, verbose_name='Prekovremeni rad')),
+                ('user', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='monthly_servicer_day_entries', to=settings.AUTH_USER_MODEL, verbose_name='Serviser')),
+            ],
+            options={
+                'verbose_name': 'Dnevni unos mjesečnog izvještaja servisera',
+                'verbose_name_plural': 'Dnevni unosi mjesečnog izvještaja servisera',
+                'ordering': ['entry_date'],
+            },
+        ),
+        migrations.AddConstraint(
+            model_name='monthlyservicerdayentry',
+            constraint=models.UniqueConstraint(fields=('user', 'entry_date', 'is_active'), name='uniq_monthly_servicer_day_entry_user_date_active'),
+        ),
+    ]