fix(moderation): remove manual reanalyze triggers — auto-recovery only

Manual per-message and batch reanalyze buttons/endpoints let anyone
re-queue arbitrary messages for LLM analysis, burning AI credits on
spam. Removed:
- FE: Reanalyze buttons in message list, search panel, and messages page
- FE: useReanalyze/useReanalyzeBatch hooks + messagesApi methods
- BE: POST /api/messages/:id/reanalyze and /reanalyze-batch endpoints
- BE: markForReanalysis/reanalyzeErrorBatch service+repository methods

Recovery of failed messages is fully automatic: the discord-gateway
startPendingAIAnalysisWorker retries 'pending' (batch path) and
'error/analysis_incomplete' (individual path) messages on
AI_ANALYSIS_RECOVERY_INTERVAL_MS.

services/frontend/src/components/analysis/search-panel.tsx

@@ -1,6 +1,6 @@
 "use client";
 
-import { Loader2, RefreshCw, Search, Sparkles } from "lucide-react";
+import { Loader2, Search, Sparkles } from "lucide-react";
 import { useCallback, useState } from "react";
 
 import { EmptyState, LoadingSkeleton } from "@/components/shared";
@@ -10,14 +10,13 @@ import { Button } from "@/components/ui/button";
 import { Card, CardContent } from "@/components/ui/card";
 import { Input } from "@/components/ui/input";
 import { Progress } from "@/components/ui/progress";
-import { useMessageSearch, useReanalyze } from "@/hooks";
+import { useMessageSearch } from "@/hooks";
 import { renderMessageContent, safeParseJsonArray } from "@/lib/format";
 import { cn } from "@/lib/utils";
 
 export function SearchPanel() {
   const [query, setQuery] = useState("");
   const [enabled, setEnabled] = useState(false);
-  const reanalyzeMut = useReanalyze();
 
   const { data: results, isValidating: isFetching } = useMessageSearch(
     query,
@@ -134,14 +133,6 @@ export function SearchPanel() {
                             </span>
                           </div>
                         )}
-                        <Button
-                          variant="ghost"
-                          size="xs"
-                          onClick={() => reanalyzeMut.mutate(msg.id)}
-                        >
-                          <RefreshCw className="size-3 mr-1" />
-                          Reanalyze
-                        </Button>
                       </div>
                     </div>
                   </CardContent>

services/frontend/src/components/messages/message-card.tsx

@@ -1,9 +1,8 @@
 "use client";
 
-import { Hash, RefreshCw } from "lucide-react";
+import { Hash } from "lucide-react";
 import { Avatar, AvatarFallback, AvatarImage } from "@/components/ui/avatar";
 import { Badge } from "@/components/ui/badge";
-import { Button } from "@/components/ui/button";
 import { Card, CardContent } from "@/components/ui/card";
 import { Progress } from "@/components/ui/progress";
 import {
@@ -18,11 +17,9 @@ import { AiStatusBadge } from "./ai-status-badge";
 export function MessageCard({
   message: msg,
   onClick,
-  onReanalyze,
 }: {
   message: MessageRecord;
   onClick: (id: string) => void;
-  onReanalyze: (id: string) => void;
 }) {
   const severity = (
     {
@@ -156,16 +153,6 @@ export function MessageCard({
                 </span>
               </div>
             )}
-            <Button
-              variant="ghost"
-              size="xs"
-              onClick={(e) => {
-                e.stopPropagation();
-                onReanalyze(msg.id);
-              }}
-            >
-              <RefreshCw className="size-3 mr-1" /> Reanalyze
-            </Button>
           </div>
         </div>
       </CardContent>

services/frontend/src/components/messages/message-list.tsx

@@ -9,7 +9,6 @@ interface MessageListProps {
   messages: MessageRecord[];
   selectedId: string | null;
   onSelect: (id: string) => void;
-  onReanalyze?: (id: string) => void;
   hasMore?: boolean;
   onLoadMore?: () => void;
   isLoadingMore?: boolean;
@@ -19,7 +18,6 @@ export function MessageList({
   messages,
   selectedId: _selectedId,
   onSelect,
-  onReanalyze,
   hasMore,
   onLoadMore,
   isLoadingMore,
@@ -27,12 +25,7 @@ export function MessageList({
   return (
     <>
       {messages.map((msg) => (
-        <MessageCard
-          key={msg.id}
-          message={msg}
-          onClick={onSelect}
-          onReanalyze={(id) => onReanalyze?.(id)}
-        />
+        <MessageCard key={msg.id} message={msg} onClick={onSelect} />
       ))}
       {hasMore && (
         <div className="flex justify-center py-4">