Implement V3 PATCH/DELETE wrappers and migrate Journals module to full V3 CRUD.

- Added update_ae_obj_v3, update_nested_obj_v3, delete_ae_obj_v3, and delete_nested_ae_obj_v3.
- Refactored Journals and Journal Entries modules to utilize the new V3 API wrappers.
- Standardized data processing and IDB caching for all CRUD operations in Journals.
- Updated testing page with comprehensive V3 CUD test buttons.

src/lib/ae_api/api_post__crud_obj_v3.ts

@@ -159,11 +159,15 @@ interface DeleteAeObjV3Params {
     api_cfg: any;
     obj_type: string;
     obj_id: string;
-    method?: 'delete' | 'soft_delete';
+    method?: 'delete' | 'soft_delete' | 'disable' | 'hide';
     params?: key_val;
     log_lvl?: number;
 }
 
+/**
+ * Delete a single object by ID (V3)
+ * Supports 'delete' (hard), 'soft_delete', 'disable' (enable=false), and 'hide' (hide=true).
+ */
 export async function delete_ae_obj_v3({
     api_cfg,
     obj_type,
@@ -188,3 +192,44 @@ export async function delete_ae_obj_v3({
         log_lvl
     });
 }
+
+interface DeleteNestedAeObjV3Params {
+    api_cfg: any;
+    parent_type: string;
+    parent_id: string;
+    child_type: string;
+    child_id: string;
+    method?: 'delete' | 'soft_delete' | 'disable' | 'hide';
+    params?: key_val;
+    log_lvl?: number;
+}
+
+/**
+ * Delete a single nested object by ID (V3)
+ */
+export async function delete_nested_ae_obj_v3({
+    api_cfg,
+    parent_type,
+    parent_id,
+    child_type,
+    child_id,
+    method = 'delete',
+    params = {},
+    log_lvl = 0
+}: DeleteNestedAeObjV3Params) {
+    const endpoint = `/v3/crud/${parent_type}/${parent_id}/${child_type}/${child_id}`;
+    const query_params = { ...params, method };
+
+    if (log_lvl) {
+        console.log('*** delete_nested_ae_obj_v3 ***');
+        console.log('Endpoint:', endpoint);
+        console.log('Params:', query_params);
+    }
+
+    return await delete_object({
+        api_cfg,
+        endpoint,
+        params: query_params,
+        log_lvl
+    });
+}