Initial commit: KeepItGoing task management server

Features:
- Django-based REST API with web interface
- Task management with tags, priorities, and due dates
- Time tracking with start/stop timers
- Subtasks support
- Task filtering (all, today, upcoming, overdue, completed)
- Tag-based organization with color coding
- Sorting by due date and priority
- Auto-assign tags when filtering
- Responsive 3-pane layout (sidebar, task list, detail panel)
- Task sharing between users
- Mobile-responsive design with dark mode support

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

config/settings/base.py

@@ -0,0 +1,149 @@
+"""
+Base Django settings for KeepItGoing.
+
+These settings are shared across all environments.
+"""
+
+import os
+from pathlib import Path
+from datetime import timedelta
+
+# Build paths inside the project like this: BASE_DIR / 'subdir'.
+BASE_DIR = Path(__file__).resolve().parent.parent.parent
+
+# Application definition
+INSTALLED_APPS = [
+    'django.contrib.admin',
+    'django.contrib.auth',
+    'django.contrib.contenttypes',
+    'django.contrib.sessions',
+    'django.contrib.messages',
+    'django.contrib.staticfiles',
+
+    # Third party
+    'rest_framework',
+    'rest_framework_simplejwt',
+    'corsheaders',
+    'django_filters',
+    'django_celery_beat',
+
+    # Local apps
+    'users',
+    'tasks',
+    'sync',
+    'notifications',
+]
+
+MIDDLEWARE = [
+    'django.middleware.security.SecurityMiddleware',
+    'whitenoise.middleware.WhiteNoiseMiddleware',
+    'corsheaders.middleware.CorsMiddleware',
+    'django.contrib.sessions.middleware.SessionMiddleware',
+    'django.middleware.common.CommonMiddleware',
+    'django.middleware.csrf.CsrfViewMiddleware',
+    'django.contrib.auth.middleware.AuthenticationMiddleware',
+    'django.contrib.messages.middleware.MessageMiddleware',
+    'django.middleware.clickjacking.XFrameOptionsMiddleware',
+]
+
+ROOT_URLCONF = 'config.urls'
+
+TEMPLATES = [
+    {
+        'BACKEND': 'django.template.backends.django.DjangoTemplates',
+        'DIRS': [BASE_DIR / 'templates'],
+        'APP_DIRS': True,
+        'OPTIONS': {
+            'context_processors': [
+                'django.template.context_processors.request',
+                'django.contrib.auth.context_processors.auth',
+                'django.contrib.messages.context_processors.messages',
+            ],
+        },
+    },
+]
+
+WSGI_APPLICATION = 'config.wsgi.application'
+
+# Custom user model
+AUTH_USER_MODEL = 'users.User'
+
+# Password validation
+AUTH_PASSWORD_VALIDATORS = [
+    {
+        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
+    },
+    {
+        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
+    },
+    {
+        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
+    },
+    {
+        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
+    },
+]
+
+# Internationalization
+LANGUAGE_CODE = 'en-us'
+TIME_ZONE = 'UTC'
+USE_I18N = True
+USE_TZ = True
+
+# Static files (CSS, JavaScript, Images)
+STATIC_URL = '/static/'
+STATIC_ROOT = BASE_DIR / 'staticfiles'
+STATICFILES_DIRS = [BASE_DIR / 'static']
+
+# Media files (user uploads)
+MEDIA_URL = '/media/'
+MEDIA_ROOT = BASE_DIR / 'media'
+
+# Default primary key field type
+DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'
+
+# Django REST Framework
+REST_FRAMEWORK = {
+    'DEFAULT_AUTHENTICATION_CLASSES': [
+        'rest_framework_simplejwt.authentication.JWTAuthentication',
+        'rest_framework.authentication.SessionAuthentication',
+    ],
+    'DEFAULT_PERMISSION_CLASSES': [
+        'rest_framework.permissions.IsAuthenticated',
+    ],
+    'DEFAULT_FILTER_BACKENDS': [
+        'django_filters.rest_framework.DjangoFilterBackend',
+        'rest_framework.filters.SearchFilter',
+        'rest_framework.filters.OrderingFilter',
+    ],
+    'DEFAULT_PAGINATION_CLASS': 'rest_framework.pagination.PageNumberPagination',
+    'PAGE_SIZE': 50,
+}
+
+# JWT Settings
+SIMPLE_JWT = {
+    'ACCESS_TOKEN_LIFETIME': timedelta(minutes=60),
+    'REFRESH_TOKEN_LIFETIME': timedelta(days=7),
+    'ROTATE_REFRESH_TOKENS': True,
+    'BLACKLIST_AFTER_ROTATION': True,
+    'UPDATE_LAST_LOGIN': True,
+    'AUTH_HEADER_TYPES': ('Bearer',),
+}
+
+# Celery Configuration
+CELERY_TIMEZONE = 'UTC'
+CELERY_TASK_TRACK_STARTED = True
+CELERY_TASK_TIME_LIMIT = 30 * 60  # 30 minutes
+CELERY_ACCEPT_CONTENT = ['json']
+CELERY_TASK_SERIALIZER = 'json'
+CELERY_RESULT_SERIALIZER = 'json'
+
+# Feature flags
+SAAS_MODE = os.environ.get('SAAS_MODE', 'False').lower() == 'true'
+BILLING_ENABLED = SAAS_MODE
+USAGE_LIMITS_ENABLED = SAAS_MODE
+
+# Login settings
+LOGIN_URL = '/login/'
+LOGIN_REDIRECT_URL = '/'
+LOGOUT_REDIRECT_URL = '/login/'