Filter unresolved dependencies in memory to guarantee zero DB queries

Replaces queryset .unresolved() call with in-memory list comprehension.
This ensures the prefetch guarantee is airtight with no potential for
additional database queries during tree traversal.

Signed-off-by: Gyan Ranjan Panda <gyanranjanpanda@gmail.com>

Author: Gyan Ranjan Panda

scanpipe/views.py

@@ -2778,7 +2778,12 @@ def get_node(self, package, stack=None):
         ]
 
         # Unresolved dependencies
-        for dependency in package.declared_dependencies.unresolved():
+        # Unresolved dependencies - filter in memory to avoid DB query
+        unresolved_deps = [
+            dep for dep in package.declared_dependencies.all()
+            if dep.resolved_to_package_id is None
+        ]
+        for dependency in unresolved_deps:
             children.append(
                 {
                     "name": dependency.package_url,