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/apps/parks/models/media.py

@@ -30,7 +30,10 @@ class ParkPhoto(TrackedModel):
     """Photo model specific to parks."""
 
     park = models.ForeignKey(
-        "parks.Park", on_delete=models.CASCADE, related_name="photos"
+        "parks.Park",
+        on_delete=models.CASCADE,
+        related_name="photos",
+        help_text="Park this photo belongs to",
     )
 
     image = models.ForeignKey(
@@ -39,10 +42,18 @@ class ParkPhoto(TrackedModel):
         help_text="Park photo stored on Cloudflare Images"
     )
 
-    caption = models.CharField(max_length=255, blank=True)
-    alt_text = models.CharField(max_length=255, blank=True)
-    is_primary = models.BooleanField(default=False)
-    is_approved = models.BooleanField(default=False)
+    caption = models.CharField(
+        max_length=255, blank=True, help_text="Photo caption or description"
+    )
+    alt_text = models.CharField(
+        max_length=255, blank=True, help_text="Alternative text for accessibility"
+    )
+    is_primary = models.BooleanField(
+        default=False, help_text="Whether this is the primary photo for the park"
+    )
+    is_approved = models.BooleanField(
+        default=False, help_text="Whether this photo has been approved by moderators"
+    )
 
     # Metadata
     created_at = models.DateTimeField(auto_now_add=True)
@@ -55,10 +66,13 @@ class ParkPhoto(TrackedModel):
         on_delete=models.SET_NULL,
         null=True,
         related_name="uploaded_park_photos",
+        help_text="User who uploaded this photo",
     )
 
     class Meta(TrackedModel.Meta):
         app_label = "parks"
+        verbose_name = "Park Photo"
+        verbose_name_plural = "Park Photos"
         ordering = ["-is_primary", "-created_at"]
         indexes = [
             models.Index(fields=["park", "is_primary"]),