fix(auth): восстанавливать раздел и фильтры после входа Portal

tests/e2e/auth-return-path.spec.ts

@@ -0,0 +1,28 @@
+import {test,expect} from '@playwright/test'
+const token=(permissions:string[])=>[Buffer.from('{}').toString('base64url'),Buffer.from(JSON.stringify({sub:'own199',name:'Own199',email:'own199@example.test',apps:['mm'],permissions,exp:Math.floor(Date.now()/1000)+600})).toString('base64url'),'fixture'].join('.')
+for(const width of [1440,320]){
+ for(const [name,next,permissions,expected]of [
+  ['query','/servers?server=42&tab=details',['mm:servers:read'],'/servers?server=42&tab=details'],
+  ['denied','/settings',['mm:servers:read'],'/servers'],
+  ['external','//outside.invalid',['mm:servers:read'],'/servers'],
+  ['loop','/auth/callback?next=/servers',['mm:servers:read'],'/servers'],
+ ] as const)test(`SSO return ${name} ${width}`,async({page})=>{
+  await page.setViewportSize({width,height:1000})
+  await page.route('**/api/**',r=>{const path=new URL(r.request().url()).pathname;return r.fulfill({json:path==='/api/auth/config'?{required:true,portal_url:'https://portal.example.test'}:path==='/api/servers'?[]:path==='/api/v1/app-switcher'?{menuLabel:'Приложения',apps:[]}:{}})})
+  await page.goto('/auth/callback?next='+encodeURIComponent(next)+'#access_token='+token([...permissions]))
+  await expect.poll(()=>new URL(page.url()).pathname+new URL(page.url()).search).toBe(expected)
+  expect(new URL(page.url()).hash).toBe('')
+  await expect(page.getByRole('button',{name:'Добавить сервер',exact:true})).toBeVisible()
+ })
+ test(`SSO handoff captures query ${width}`,async({page})=>{
+  await page.setViewportSize({width,height:1000})
+  await page.route('**/api/auth/config',r=>r.fulfill({json:{required:true,portal_url:'https://portal.example.test/'}}))
+  await page.route('https://portal.example.test/**',r=>r.fulfill({contentType:'text/html',body:'<p>Own Portal fixture</p>'}))
+  await page.goto('/servers?server=42&tab=details')
+  await expect.poll(()=>new URL(page.url()).hostname).toBe('portal.example.test')
+  const callback=new URL(new URL(page.url()).searchParams.get('return_to')!)
+  expect(callback.origin).toBe('http://127.0.0.1:3100')
+  expect(callback.pathname).toBe('/auth/callback')
+  expect(callback.searchParams.get('next')).toBe('/servers?server=42&tab=details')
+ })
+}