feat(reader): remove admin delete button from reader header; shelf card hover remains the only delete entry

frontend/src/components/icons.tsx

@@ -55,12 +55,6 @@ export const IconX = (p: P) => (
   </Svg>
 );
 
-export const IconTrash = (p: P) => (
-  <Svg {...p}>
-    <path d="M4.5 6.5h15M9.5 6.5V4.75A.75.75 0 0 1 10.25 4h3.5a.75.75 0 0 1 .75.75v1.75M6.5 6.5l.8 12a1.5 1.5 0 0 0 1.5 1.4h6.4a1.5 1.5 0 0 0 1.5-1.4l.8-12" />
-  </Svg>
-);
-
 export const IconLogout = (p: P) => (
   <Svg {...p}>
     <path d="M14 4h4.5A1.5 1.5 0 0 1 20 5.5v13a1.5 1.5 0 0 1-1.5 1.5H14" />

frontend/src/pages/Reader.tsx

@@ -1,11 +1,9 @@
-import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
+import { useQuery } from "@tanstack/react-query";
 import { Suspense, lazy, useCallback, useMemo, useState, type ComponentType, type LazyExoticComponent } from "react";
-import { Link, useNavigate, useParams } from "react-router-dom";
+import { Link, useParams } from "react-router-dom";
 import { api } from "../api/client";
 import type { Format } from "../api/types";
-import { useAuth } from "../auth/AuthContext";
-import { IconArrowLeft, IconTrash } from "../components/icons";
-import { toast } from "../components/Toaster";
+import { IconArrowLeft } from "../components/icons";
 import { btn, btnGhost, formatBadge } from "../components/ui";
 import type { ReaderProps } from "../lib/useProgress";
 
@@ -20,9 +18,6 @@ const READERS: Partial<Record<Format, LazyExoticComponent<ComponentType<ReaderPr
 export default function Reader() {
   const { id: idStr } = useParams();
   const id = Number(idStr);
-  const qc = useQueryClient();
-  const nav = useNavigate();
-  const { isAdmin } = useAuth();
   const [chromeOn, setChromeOn] = useState(true);
 
   const toggle = useCallback(() => setChromeOn((v) => !v), []);
@@ -31,15 +26,6 @@ export default function Reader() {
 
   const bookQ = useQuery({ queryKey: ["book", id], queryFn: () => api.getBook(id), enabled: Number.isFinite(id) });
   const progQ = useQuery({ queryKey: ["progress"], queryFn: api.listProgress });
-  const del = useMutation({
-    mutationFn: () => api.deleteBook(id),
-    onSuccess: () => {
-      toast("ok", "已删除");
-      qc.invalidateQueries({ queryKey: ["books"] });
-      nav("/");
-    },
-    onError: (e) => toast("err", e instanceof Error ? e.message : "删除失败"),
-  });
 
   const book = bookQ.data;
   const body = (() => {
@@ -81,17 +67,6 @@ export default function Reader() {
             <span className="tabular-nums">{Math.round(book.percent * 100)}%</span>
           </span>
         )}
-        {isAdmin && book && (
-          <button
-            className={btn + " ml-auto text-red-300"}
-            onClick={() => {
-              if (confirm(`删除《${book.title}》?磁盘文件一并删除,阅读进度保留`)) del.mutate();
-            }}
-          >
-            <IconTrash className="size-4" />
-            删除
-          </button>
-        )}
       </header>
       <div className="min-h-0 flex-1">
         <Suspense fallback={<Msg text="加载阅读器…" />}>{body}</Suspense>