Add secret management guide, client-side performance monitoring, and search accessibility enhancements

- Introduced a comprehensive Secret Management Guide detailing best practices, secret classification, development setup, production management, rotation procedures, and emergency protocols.
- Implemented a client-side performance monitoring script to track various metrics including page load performance, paint metrics, layout shifts, and memory usage.
- Enhanced search accessibility with keyboard navigation support for search results, ensuring compliance with WCAG standards and improving user experience.

backend/config/django/test.py

@@ -1,65 +1,113 @@
 """
 Test settings for thrillwiki project.
+
+This module extends base.py with test-specific configurations:
+- Debug disabled for realistic testing
+- PostGIS database for GeoDjango support
+- In-memory cache for isolation
+- Simplified password hashing for speed
+- Disabled logging to reduce noise
 """
 
-from .base import *  # noqa: F403,F405
+import os
+
+from .base import *  # noqa: F401,F403
+
+# =============================================================================
+# Test Core Settings
+# =============================================================================
 
-# Test-specific settings
 DEBUG = False
 
-# Use in-memory database for faster tests
+# =============================================================================
+# Test Database Configuration
+# =============================================================================
+# Use PostGIS for GeoDjango support - required for spatial queries in tests
+
 DATABASES = {
     "default": {
-        "ENGINE": "django.contrib.gis.db.backends.spatialite",
-        "NAME": ":memory:",
+        "ENGINE": "django.contrib.gis.db.backends.postgis",
+        "NAME": os.environ.get("TEST_DB_NAME", "test_thrillwiki"),
+        "USER": os.environ.get("TEST_DB_USER", "postgres"),
+        "PASSWORD": os.environ.get("TEST_DB_PASSWORD", "postgres"),
+        "HOST": os.environ.get("TEST_DB_HOST", "localhost"),
+        "PORT": os.environ.get("TEST_DB_PORT", "5432"),
+        "TEST": {
+            "NAME": os.environ.get("TEST_DB_NAME", "test_thrillwiki"),
+        },
     }
 }
 
-# Use in-memory cache for tests
+# =============================================================================
+# Test Cache Configuration
+# =============================================================================
+# Use in-memory cache for test isolation
+
 CACHES = {
     "default": {
         "BACKEND": "django.core.cache.backends.locmem.LocMemCache",
         "LOCATION": "test-cache",
-    }
+    },
+    "sessions": {
+        "BACKEND": "django.core.cache.backends.locmem.LocMemCache",
+        "LOCATION": "test-sessions",
+    },
+    "api": {
+        "BACKEND": "django.core.cache.backends.locmem.LocMemCache",
+        "LOCATION": "test-api",
+    },
 }
 
-# Disable migrations for faster tests
+# =============================================================================
+# Email Configuration
+# =============================================================================
+# Use in-memory email backend for test assertions
 
-
-class DisableMigrations:
-    def __contains__(self, item):
-        return True
-
-    def __getitem__(self, item):
-        return None
-
-
-MIGRATION_MODULES = DisableMigrations()
-
-# Email backend for tests
 EMAIL_BACKEND = "django.core.mail.backends.locmem.EmailBackend"
 
-# Password hashers for faster tests
+# =============================================================================
+# Password Hashing
+# =============================================================================
+# Use fast MD5 hashing for tests (never use in production!)
+
 PASSWORD_HASHERS = [
     "django.contrib.auth.hashers.MD5PasswordHasher",
 ]
 
-# Disable logging during tests
+# =============================================================================
+# Logging Configuration
+# =============================================================================
+# Disable logging during tests to reduce noise
+
 LOGGING_CONFIG = None
 
-# Media files for tests
-MEDIA_ROOT = BASE_DIR / "test_media"
+# =============================================================================
+# Static and Media Files
+# =============================================================================
+# Use test-specific directories
 
-# Static files for tests
-STATIC_ROOT = BASE_DIR / "test_static"
+MEDIA_ROOT = BASE_DIR / "test_media"  # noqa: F405
+STATIC_ROOT = BASE_DIR / "test_static"  # noqa: F405
+
+# =============================================================================
+# Security Settings
+# =============================================================================
+# Disable security features that interfere with testing
 
-# Disable Turnstile for tests
 TURNSTILE_SITE_KEY = "test-key"
 TURNSTILE_SECRET_KEY = "test-secret"
 
-# Test-specific middleware (remove caching middleware)
-MIDDLEWARE = [m for m in MIDDLEWARE if "cache" not in m.lower()]
+# =============================================================================
+# Middleware Configuration
+# =============================================================================
+# Remove caching middleware for test isolation
+
+MIDDLEWARE = [m for m in MIDDLEWARE if "cache" not in m.lower()]  # noqa: F405
+
+# =============================================================================
+# Celery Configuration
+# =============================================================================
+# Run tasks synchronously during tests
 
-# Celery settings for tests (if Celery is used)
 CELERY_TASK_ALWAYS_EAGER = True
 CELERY_TASK_EAGER_PROPAGATES = True