feat: add price filter and dynamic slider to catalog

- Implemented JavaScript-based price slider for catalog filtering
- Updated catalog views to handle min/max price inputs and compute slider bounds
- Enhanced templates (`index.html`, `side-bar.html`) with filtering form and updated URLs
- Added CSS for price slider styling and form layout
- Introduced utility functions for URL building and price parsing
- Expanded tests for price filtering, sliders, and sidebar active states
- Updated context processor and header for dynamic navigation with price filters

home/tests_settings.py

@@ -3,7 +3,13 @@ from unittest.mock import patch
 
 from django.test import SimpleTestCase
 
-from santehray.settings import collect_hosts, collect_origins, normalize_host, normalize_origin
+from santehray.settings import (
+    collect_hosts,
+    collect_origins,
+    env_choice,
+    normalize_host,
+    normalize_origin,
+)
 
 
 class SettingsNormalizationTests(SimpleTestCase):
@@ -26,3 +32,25 @@ class SettingsNormalizationTests(SimpleTestCase):
 
     def test_normalize_origin_preserves_explicit_scheme_and_port(self):
         self.assertEqual(normalize_origin("https://preview-1.azimkin.dev:8443"), "https://preview-1.azimkin.dev:8443")
+
+    def test_env_choice_accepts_allowed_value(self):
+        with patch.dict(os.environ, {"SECURE_REFERRER_POLICY": "strict-origin-when-cross-origin"}):
+            self.assertEqual(
+                env_choice(
+                    "SECURE_REFERRER_POLICY",
+                    "same-origin",
+                    {"same-origin", "strict-origin-when-cross-origin"},
+                ),
+                "strict-origin-when-cross-origin",
+            )
+
+    def test_env_choice_falls_back_for_invalid_value(self):
+        with patch.dict(os.environ, {"SECURE_REFERRER_POLICY": "invalid-policy"}):
+            self.assertEqual(
+                env_choice(
+                    "SECURE_REFERRER_POLICY",
+                    "same-origin",
+                    {"same-origin", "strict-origin-when-cross-origin"},
+                ),
+                "same-origin",
+            )