Phase 4: HTMX frontend with dark palette

- 4 pages: Pantry, Recipes, Shopping List, Cook Log
- HTMX-powered: add/delete pantry items, toggle shopping, generate smart list
- Custom 13-colour palette from Lospec (dark bg, yellow accent)
- Mobile-responsive
- Whitenoise for static files in production
- All routes under /app/
- API (/api/) stays internal, frontend (/app/) for browser use

food_project/settings.py

@@ -55,6 +55,7 @@ REST_FRAMEWORK = {
 
 MIDDLEWARE = [
     'django.middleware.security.SecurityMiddleware',
+    'whitenoise.middleware.WhiteNoiseMiddleware',
     'django.contrib.sessions.middleware.SessionMiddleware',
     'django.middleware.common.CommonMiddleware',
     'django.middleware.csrf.CsrfViewMiddleware',
@@ -129,6 +130,12 @@ USE_TZ = True
 # https://docs.djangoproject.com/en/5.2/howto/static-files/
 
 STATIC_URL = 'static/'
+STATIC_ROOT = BASE_DIR / 'staticfiles'
+STORAGES = {
+    "staticfiles": {
+        "BACKEND": "whitenoise.storage.CompressedManifestStaticFilesStorage",
+    },
+}
 
 # Default primary key field type
 # https://docs.djangoproject.com/en/5.2/ref/settings/#default-auto-field