Add reviewed duplicate account consolidation and prevent duplicate imports

frontend/app/admin/identities/IdentityReviewPanel.tsx

@@ -4,6 +4,7 @@ import { useEffect, useRef, useState } from 'react'
 import { useRouter } from 'next/navigation'
 import { authFetch, getApiBase } from '../../lib/auth'
 import './identities.css'
+import DuplicateAccountRepair from './DuplicateAccountRepair'
 import ResolveIdentityLink from './ResolveIdentityLink'
 
 type Identity = { id: string; name: string }
@@ -44,12 +45,14 @@ export default function IdentityReviewPanel() {
   const [query, setQuery] = useState('')
   const [filter, setFilter] = useState('all')
   const [selected, setSelected] = useState<number[]>([])
+  const [duplicates, setDuplicates] = useState<Row | null>(null)
   const [resolving, setResolving] = useState<Row | null>(null)
   const [reviewing, setReviewing] = useState(false)
   const controller = useRef<AbortController | null>(null)
   const reviewPanel = useRef<HTMLElement | null>(null)
 
   useEffect(() => {
+    setQuery(new URLSearchParams(window.location.search).get('user') ?? '')
     const abort = new AbortController()
     void authFetch(`${getApiBase()}/auth/me`, { signal: abort.signal }).then(async (response) => {
       if (response.status === 401) { router.replace('/login'); return }
@@ -150,7 +153,7 @@ export default function IdentityReviewPanel() {
                 <div><dt>Jellystat user ID</dt><dd><code>{row.jellystat.id ?? 'Not verified'}</code><span>{statsLabels[row.jellystat.state] ?? row.jellystat.state}</span></dd></div>
               </dl>
               {row.issues.length > 0 && <ul className="identity-issues">{row.issues.map((issue) => <li key={issue}>{issue}</li>)}</ul>}
-              {(row.state === 'unlinked' || row.state === 'conflict') && <div className="identity-resolution-entry"><p className="identity-meta">Compare the correct Jellyfin identity with the stored links and review the smallest safe repair.</p><button type="button" className="ghost-button" disabled={saving || report.services.jellyfin !== 'available'} onClick={() => setResolving(row)}>Review repair</button></div>}
+              {(row.state === 'unlinked' || row.state === 'conflict') && <div className="identity-resolution-entry"><p className="identity-meta">Compare the correct Jellyfin identity with the stored links and review the smallest safe repair.</p><button type="button" className="ghost-button" disabled={saving || report.services.jellyfin !== 'available'} onClick={() => setResolving(row)}>Review repair</button>{row.issues.some((issue) => issue.includes("share this username")) && <button type="button" className="ghost-button" disabled={saving} onClick={() => setDuplicates(row)}>Repair duplicate accounts</button>}</div>}
               {row.state === 'unavailable' && <p className="identity-meta">A required service could not be checked. Check its connection and run this again.</p>}
               {row.confirmed_at && <p className="identity-meta">Last confirmed {new Date(row.confirmed_at).toLocaleString()}</p>}
             </article>)}
@@ -158,6 +161,7 @@ export default function IdentityReviewPanel() {
           {report.upstream.length > 0 && <details className="identity-upstream"><summary>{report.upstream.length} upstream accounts need review</summary><ul>{report.upstream.map((entry) => <li key={`${entry.platform}-${entry.id}`}><strong>{entry.platform}: {entry.name}</strong> · ID <code>{entry.id}</code>{entry.jellyfin_id && <span> · Jellyfin <code>{entry.jellyfin_id}</code></span>}<p>{entry.detail}</p></li>)}</ul></details>}
         </>}
       </>}
+      {duplicates && <DuplicateAccountRepair row={duplicates} onClose={() => setDuplicates(null)} onSaved={() => { setDuplicates(null); void runCheck().then(() => setNotice('Duplicate accounts repaired. History retained and links rechecked.')) }} />}
       {resolving && report && <ResolveIdentityLink row={resolving} accounts={report.jellyfin_users} onClose={() => setResolving(null)} onSaved={() => {
         setResolving(null); setReport(null); setSelected([]); setReviewing(false)
         setNotice('Account links repaired and saved. Run another check to see the updated mappings.')