fix(web): 隐藏文件助手入口，修复自聊天详情栏错误操作

后端目前没有支持文件助手所需的配额/分类等能力，只是把它当作
普通话题处理；与其做一个功能不全的界面，先从导航栏、会话列表
置顶区、通讯录固定入口、设置页移动端快捷入口中移除该入口。slf
话题现在按普通会话行为处理（排序、未读计数均不再特殊处理）。

同时修复 DetailColumn 对自聊天（slf）显示语音/视频通话、备注、
拉黑、举报、删除好友等对自己无意义操作的问题，改为仅显示适用
的发消息/查找聊天记录/置顶/免打扰/清空聊天记录等项。

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

web/src/features/messages/DetailColumn.tsx

@@ -70,10 +70,19 @@ export function DetailColumn({ topicId, peerName, onClose, onOpenHistory }: Deta
     setErrorToast('');
   }, [topicId]);
 
+  // `slf` (self-chat, e.g. opened via a chat-list row once it has real history -- there is no
+  // "文件助手" entry point pointing at it anymore, see ChatListColumn.tsx's PINNED_ENTRIES doc
+  // comment) isn't a friend and isn't really "someone else" at all -- getUserProfile('slf') has no
+  // real user to look up, and every friend-only action below (remark/block/report/delete friend)
+  // is nonsensical pointed at yourself. Gated out entirely rather than left to silently no-op or
+  // error, confirmed live: this used to render "加入黑名单"/"投诉举报"/"删除好友" for your own notes
+  // to yourself.
+  const isSelf = topicId === 'slf';
+
   const friendsQuery = useQuery({ queryKey: ['friends'], queryFn: () => fetchAllPages((cursor) => getFriends('', cursor)) });
   const friend = friendsQuery.data?.find((f) => f.user_id === topicId);
 
-  const profileQuery = useQuery({ queryKey: ['user-profile', topicId], queryFn: () => getUserProfile(topicId) });
+  const profileQuery = useQuery({ queryKey: ['user-profile', topicId], queryFn: () => getUserProfile(topicId), enabled: !isSelf });
   const idLine = [profileQuery.data?.public_account && `ID：${profileQuery.data.public_account}`, profileQuery.data?.region]
     .filter(Boolean)
     .join(' · ');
@@ -160,28 +169,32 @@ export function DetailColumn({ topicId, peerName, onClose, onOpenHistory }: Deta
             <Icon name="chat_bubble_outline" className="text-[20px]" />
             <span className="text-xs text-text-secondary">发消息</span>
           </button>
-          <button
-            type="button"
-            disabled={profileQuery.data?.capabilities?.can_call === false}
-            onClick={() => {
-              if (useCallStore.getState().phase === 'idle') useCallStore.getState().startCall(topicId, peerName, 'audio');
-            }}
-            className="flex w-19 flex-col items-center gap-1 rounded-[10px] bg-surface-rail py-2.5 text-accent disabled:opacity-50"
-          >
-            <Icon name="call" className="text-[20px]" />
-            <span className="text-xs text-text-secondary">语音</span>
-          </button>
-          <button
-            type="button"
-            disabled={profileQuery.data?.capabilities?.can_call === false}
-            onClick={() => {
-              if (useCallStore.getState().phase === 'idle') useCallStore.getState().startCall(topicId, peerName, 'video');
-            }}
-            className="flex w-19 flex-col items-center gap-1 rounded-[10px] bg-surface-rail py-2.5 text-accent disabled:opacity-50"
-          >
-            <Icon name="videocam" className="text-[20px]" />
-            <span className="text-xs text-text-secondary">视频</span>
-          </button>
+          {isSelf ? null : (
+            <>
+              <button
+                type="button"
+                disabled={profileQuery.data?.capabilities?.can_call === false}
+                onClick={() => {
+                  if (useCallStore.getState().phase === 'idle') useCallStore.getState().startCall(topicId, peerName, 'audio');
+                }}
+                className="flex w-19 flex-col items-center gap-1 rounded-[10px] bg-surface-rail py-2.5 text-accent disabled:opacity-50"
+              >
+                <Icon name="call" className="text-[20px]" />
+                <span className="text-xs text-text-secondary">语音</span>
+              </button>
+              <button
+                type="button"
+                disabled={profileQuery.data?.capabilities?.can_call === false}
+                onClick={() => {
+                  if (useCallStore.getState().phase === 'idle') useCallStore.getState().startCall(topicId, peerName, 'video');
+                }}
+                className="flex w-19 flex-col items-center gap-1 rounded-[10px] bg-surface-rail py-2.5 text-accent disabled:opacity-50"
+              >
+                <Icon name="videocam" className="text-[20px]" />
+                <span className="text-xs text-text-secondary">视频</span>
+              </button>
+            </>
+          )}
         </div>
       </div>
 
@@ -208,7 +221,7 @@ export function DetailColumn({ topicId, peerName, onClose, onOpenHistory }: Deta
       </div>
 
       <div className="flex flex-col border-b border-border-list-item px-5 text-sm">
-        {remarkEditing ? (
+        {isSelf ? null : remarkEditing ? (
           <div className="flex items-center gap-2 py-3">
             <span className="flex-none text-text-body">备注</span>
             <input
@@ -254,10 +267,12 @@ export function DetailColumn({ topicId, peerName, onClose, onOpenHistory }: Deta
             onChange={() => updateSettings.mutate({ mute_notifications: !settingsQuery.data?.mute_notifications })}
           />
         </div>
-        <div className="flex items-center justify-between py-3">
-          <span className="text-text-body">加入黑名单</span>
-          <Toggle checked={isBlocked} disabled={blockMutation.isPending} onChange={() => blockMutation.mutate(!isBlocked)} />
-        </div>
+        {isSelf ? null : (
+          <div className="flex items-center justify-between py-3">
+            <span className="text-text-body">加入黑名单</span>
+            <Toggle checked={isBlocked} disabled={blockMutation.isPending} onChange={() => blockMutation.mutate(!isBlocked)} />
+          </div>
+        )}
       </div>
 
       <div className="flex flex-col px-5 pb-2 text-sm">
@@ -265,19 +280,23 @@ export function DetailColumn({ topicId, peerName, onClose, onOpenHistory }: Deta
           <span className="text-text-body">清空聊天记录</span>
           <Icon name="chevron_right" className="text-[20px] text-icon-arrow" />
         </button>
-        <button type="button" onClick={reportAbuse} className="flex items-center justify-between py-3 text-left">
-          <span className="text-text-body">投诉举报</span>
-          <Icon name="chevron_right" className="text-[20px] text-icon-arrow" />
-        </button>
+        {isSelf ? null : (
+          <button type="button" onClick={reportAbuse} className="flex items-center justify-between py-3 text-left">
+            <span className="text-text-body">投诉举报</span>
+            <Icon name="chevron_right" className="text-[20px] text-icon-arrow" />
+          </button>
+        )}
       </div>
 
-      <button
-        type="button"
-        onClick={startDeleteFriend}
-        className="mx-5 my-4 h-10 flex-none rounded-lg border border-danger-border-soft text-sm text-danger-text"
-      >
-        删除好友
-      </button>
+      {isSelf ? null : (
+        <button
+          type="button"
+          onClick={startDeleteFriend}
+          className="mx-5 my-4 h-10 flex-none rounded-lg border border-danger-border-soft text-sm text-danger-text"
+        >
+          删除好友
+        </button>
+      )}
 
       <Toast message={errorToast} variant="error" onDone={() => setErrorToast('')} />
     </aside>