fix(sessions): reconcile current category schema

apps/shared/OpenClawKit/Sources/OpenClawKit/Resources/tool-display.json

@@ -565,12 +565,22 @@
           "detailKeys": [
             "sessionKey",
             "label",
+            "category",
+            "unread",
             "pinned",
             "archived",
             "model",
             "thinkingLevel"
           ]
         },
+        "patch_many": {
+          "label": "update many",
+          "detailKeys": [
+            "category",
+            "unread",
+            "targets"
+          ]
+        },
         "group_list": {
           "label": "groups"
         },

src/agents/tools/sessions-tool.ts

@@ -109,11 +109,6 @@ const SessionsToolSchema = Type.Object(
     label: Type.Optional(
       Type.String({ description: "Sidebar title override. Empty string clears it." }),
     ),
-    category: Type.Optional(
-      Type.Union([Type.String(), Type.Null()], {
-        description: "Sidebar group/category. Null or empty string clears it to Other.",
-      }),
-    ),
     unread: Type.Optional(Type.Boolean({ description: "Mark the session unread or read." })),
     icon: Type.Optional(
       Type.String({