Add child relation deletion by parent query: Introduced a new SQL query to delete child relations where the character is either a father or mother. Updated relevant workers to execute this query before deleting child relations, ensuring proper cleanup of relationships during character deletion.

src/worker/user_character.rs

@@ -39,6 +39,7 @@ use crate::worker::sql::{
     QUERY_DELETE_DIRECTOR,
     QUERY_DELETE_RELATIONSHIP,
     QUERY_DELETE_CHILD_RELATION,
+    QUERY_DELETE_CHILD_RELATION_BY_PARENT,
     QUERY_DELETE_KNOWLEDGE,
     QUERY_DELETE_DEBTORS_PRISM,
     QUERY_DELETE_POLITICAL_OFFICE,
@@ -625,6 +626,7 @@ impl UserCharacterWorker {
         conn.prepare("delete_director", QUERY_DELETE_DIRECTOR)?;
         conn.prepare("delete_relationship", QUERY_DELETE_RELATIONSHIP)?;
         conn.prepare("delete_child_relation", QUERY_DELETE_CHILD_RELATION)?;
+        conn.prepare("delete_child_relation_by_parent", QUERY_DELETE_CHILD_RELATION_BY_PARENT)?;
         conn.prepare("delete_knowledge", QUERY_DELETE_KNOWLEDGE)?;
         conn.prepare("delete_debtors_prism", QUERY_DELETE_DEBTORS_PRISM)?;
         conn.prepare("delete_political_office", QUERY_DELETE_POLITICAL_OFFICE)?;
@@ -632,6 +634,7 @@ impl UserCharacterWorker {
 
         conn.execute("delete_director", &[&character_id])?;
         conn.execute("delete_relationship", &[&character_id])?;
+        conn.execute("delete_child_relation_by_parent", &[&character_id])?;
         conn.execute("delete_child_relation", &[&character_id])?;
         conn.execute("delete_knowledge", &[&character_id])?;
         conn.execute("delete_debtors_prism", &[&character_id])?;