fix: rewrite index.ui for pipeline_ops/pipeline_dist as proper bricks cards

- pipeline_ops: VBox+ResponsableBox cards → pricing/capacity/usage_log
- pipeline_dist: VBox+ResponsableBox cards → distributor_pipeline
- main index.ui: fix task center URL (/pipeline_task→/pipeline_sdlc/sd_projects), menu cwidth

wwwroot/index.ui

@@ -1,16 +1,25 @@
 {
-  "title": "分销管理",
-  "layout": "cards",
-  "cards": [
-    {
-      "title": "分销商管理",
-      "icon": "people",
-      "url": "{{entire_url('../json/distributors.json')}}"
-    },
-    {
-      "title": "分销商产线配置",
-      "icon": "link",
-      "url": "{{entire_url('../json/distributor_pipeline.json')}}"
-    }
-  ]
+    "widgettype": "VBox",
+    "options": {"width": "100%", "height": "100%", "padding": "24px", "spacing": "20px"},
+    "subwidgets": [
+        {
+            "widgettype": "Title2",
+            "options": {"text": "分销管理"}
+        },
+        {
+            "widgettype": "ResponsableBox",
+            "options": {"gap": "16px", "minWidth": "220px"},
+            "subwidgets": [
+                {
+                    "widgettype": "VBox",
+                    "options": {"css": "card", "cwidth": 22, "padding": "16px", "cursor": "pointer"},
+                    "binds": [{"wid": "self", "event": "click", "actiontype": "urlwidget", "target": "app.main_content", "options": {"url": "{{entire_url('../pipeline_dist/distributor_pipeline/')}}"}, "mode": "replace"}],
+                    "subwidgets": [
+                        {"widgettype": "Title4", "options": {"text": "分销商产线配置"}},
+                        {"widgettype": "Text", "options": {"text": "管理分销商产线绑定", "cfontsize": 0.9}}
+                    ]
+                }
+            ]
+        }
+    ]
 }