docs: update plan catalog inventory and capability backlog

- PLAN_CATALOG_INVENTORY.md: refresh plan catalog data
- OPENCLAW_CAPABILITY_BACKLOG.md: update backlog status
- plan_catalog_inventory_seed_cn_relays_top20plus.json: update seed data

seeds/plan_catalog_inventory_seed_cn_relays_top20plus.json

@@ -685,7 +685,7 @@
       "operatorName": "CoresHub",
       "operatorNameCn": "CoresHub",
       "operatorCountry": "CN",
-      "operatorWebsite": "https://www.qingcloud.com",
+      "operatorWebsite": "https://www.qingcloud.com/products/coreshub",
       "operatorType": "cloud",
       "platformName": "CoresHub",
       "platformNameCn": "基石智算 CoresHub",
@@ -693,13 +693,13 @@
       "planFamily": "pay_as_you_go",
       "planStatus": "confirmed",
       "sourceKind": "official_product_page",
-      "sourceURL": "https://www.qingcloud.com/products/coreshub",
-      "sourceTitle": "CoresHub",
+      "sourceURL": "https://docs.coreshub.cn/console/big_model_server/introduce/model_choose",
+      "sourceTitle": "在线服务模型价格",
       "region": "CN",
       "currency": "CNY",
       "billingCycle": "usage",
-      "importerKey": "import_catalog_seed_verification.go",
-      "notes": "青云基石智算模型服务入口。",
+      "importerKey": "import_coreshub_pricing.go",
+      "notes": "青云基石智算官方模型价格页，当前已升级为真实按量价格 importer。",
       "catalogSegment": "relay_top20plus",
       "marketRank": 19
     },