feat(system): adicionar notificações de espaço em disco

Adiciona monitoramento de disco com alertas globais quando o uso
ultrapassa thresholds configuráveis (85% warning, 95% critical).

- Novo endpoint GET /api/system/disk-status
- getDiskStatus() no SystemService com thresholds via KVStore
- Hook useDiskAlert com polling de 45s e dismiss via localStorage
- DiskAlertBanner no AppLayout visível em todas as páginas
- Banner reaparece se o nível de alerta piorar

Closes #485

admin/app/controllers/system_controller.ts

@@ -113,6 +113,10 @@ export default class SystemController {
         return await this.systemService.subscribeToReleaseNotes(reqData.email);
     }
 
+    async getDiskStatus({}: HttpContext) {
+        return await this.systemService.getDiskStatus();
+    }
+
     async getDebugInfo({}: HttpContext) {
         const debugInfo = await this.systemService.getDebugInfo()
         return { debugInfo }

admin/app/services/system_service.ts

@@ -521,6 +521,59 @@ export class SystemService {
     return parseFloat((bytes / Math.pow(k, i)).toFixed(decimals)) + ' ' + sizes[i]
   }
 
+  async getDiskStatus(): Promise<{
+    level: 'none' | 'warning' | 'critical'
+    threshold: number
+    highestUsage: number
+    diskName: string
+  }> {
+    try {
+      const diskInfoRawString = await getFile(
+        path.join(process.cwd(), SystemService.diskInfoFile),
+        'string'
+      )
+
+      const diskInfo = (
+        diskInfoRawString
+          ? JSON.parse(diskInfoRawString.toString())
+          : { diskLayout: { blockdevices: [] }, fsSize: [] }
+      ) as NomadDiskInfoRaw
+
+      const disks = this.calculateDiskUsage(diskInfo)
+
+      const warningStr = await KVStore.getValue('disk.warningThreshold')
+      const criticalStr = await KVStore.getValue('disk.criticalThreshold')
+      const warningThreshold = warningStr ? Number(warningStr) : 85
+      const criticalThreshold = criticalStr ? Number(criticalStr) : 95
+
+      let highestUsage = 0
+      let diskName = ''
+
+      for (const disk of disks) {
+        if (disk.percentUsed > highestUsage) {
+          highestUsage = disk.percentUsed
+          diskName = disk.name
+        }
+      }
+
+      let level: 'none' | 'warning' | 'critical' = 'none'
+      let threshold = 0
+
+      if (highestUsage >= criticalThreshold) {
+        level = 'critical'
+        threshold = criticalThreshold
+      } else if (highestUsage >= warningThreshold) {
+        level = 'warning'
+        threshold = warningThreshold
+      }
+
+      return { level, threshold, highestUsage, diskName }
+    } catch (error) {
+      logger.error('Error getting disk status:', error)
+      return { level: 'none', threshold: 0, highestUsage: 0, diskName: '' }
+    }
+  }
+
   async updateSetting(key: KVStoreKey, value: any): Promise<void> {
     if ((value === '' || value === undefined || value === null) && KV_STORE_SCHEMA[key] === 'string') {
       await KVStore.clearValue(key)

admin/constants/kv_store.ts

@@ -1,3 +1,3 @@
 import { KVStoreKey } from "../types/kv_store.js";
 
-export const SETTINGS_KEYS: KVStoreKey[] = ['chat.suggestionsEnabled', 'chat.lastModel', 'ui.hasVisitedEasySetup', 'ui.theme', 'system.earlyAccess', 'ai.assistantCustomName'];
+export const SETTINGS_KEYS: KVStoreKey[] = ['chat.suggestionsEnabled', 'chat.lastModel', 'ui.hasVisitedEasySetup', 'ui.theme', 'system.earlyAccess', 'ai.assistantCustomName', 'disk.warningThreshold', 'disk.criticalThreshold'];

admin/inertia/components/DiskAlertBanner.tsx

@@ -0,0 +1,23 @@
+import Alert from './Alert'
+import { useDiskAlert } from '~/hooks/useDiskAlert'
+
+export default function DiskAlertBanner() {
+  const { diskStatus, shouldShow, dismiss } = useDiskAlert()
+
+  if (!shouldShow || !diskStatus) return null
+
+  const isWarning = diskStatus.level === 'warning'
+
+  return (
+    <div className="px-4 pt-4">
+      <Alert
+        type={isWarning ? 'warning' : 'error'}
+        variant="bordered"
+        title={isWarning ? 'Disk Space Running Low' : 'Disk Space Critically Low'}
+        message={`Disk "${diskStatus.diskName}" is ${diskStatus.highestUsage.toFixed(1)}% full. Free up space to avoid issues with downloads and services.`}
+        dismissible={true}
+        onDismiss={dismiss}
+      />
+    </div>
+  )
+}

admin/inertia/hooks/useDiskAlert.ts

@@ -0,0 +1,53 @@
+import { useQuery } from '@tanstack/react-query'
+import { useState, useMemo } from 'react'
+import api from '~/lib/api'
+
+type DiskAlertLevel = 'none' | 'warning' | 'critical'
+
+interface DiskStatusResponse {
+  level: DiskAlertLevel
+  threshold: number
+  highestUsage: number
+  diskName: string
+}
+
+const DISMISSED_KEY = 'nomad:disk-alert-dismissed-level'
+
+export function useDiskAlert() {
+  const [dismissedLevel, setDismissedLevel] = useState<DiskAlertLevel | null>(() => {
+    try {
+      return localStorage.getItem(DISMISSED_KEY) as DiskAlertLevel | null
+    } catch {
+      return null
+    }
+  })
+
+  const { data: diskStatus } = useQuery<DiskStatusResponse | undefined>({
+    queryKey: ['disk-status'],
+    queryFn: async () => await api.getDiskStatus(),
+    refetchInterval: 45000,
+  })
+
+  const shouldShow = useMemo(() => {
+    if (!diskStatus || diskStatus.level === 'none') return false
+    if (!dismissedLevel) return true
+    // Exibe novamente se o nível piorou
+    if (dismissedLevel === 'warning' && diskStatus.level === 'critical') return true
+    return false
+  }, [diskStatus, dismissedLevel])
+
+  const dismiss = () => {
+    if (diskStatus) {
+      setDismissedLevel(diskStatus.level)
+      try {
+        localStorage.setItem(DISMISSED_KEY, diskStatus.level)
+      } catch {}
+    }
+  }
+
+  return {
+    diskStatus,
+    shouldShow,
+    dismiss,
+  }
+}

admin/inertia/layouts/AppLayout.tsx

@@ -7,6 +7,7 @@ import { SERVICE_NAMES } from '../../constants/service_names'
 import { Link } from '@inertiajs/react'
 import { IconArrowLeft } from '@tabler/icons-react'
 import classNames from 'classnames'
+import DiskAlertBanner from '~/components/DiskAlertBanner'
 
 export default function AppLayout({ children }: { children: React.ReactNode }) {
   const [isChatOpen, setIsChatOpen] = useState(false)
@@ -33,6 +34,7 @@ export default function AppLayout({ children }: { children: React.ReactNode }) {
           "text-desert-green font-semibold h-[1.5px] bg-desert-green border-none",
           window.location.pathname !== '/home' ? "mt-12 md:mt-0" : "mt-0"
         )} />
+      <DiskAlertBanner />
       <div className="flex-1 w-full bg-desert">{children}</div>
       <Footer />
 

admin/inertia/lib/api.ts

@@ -211,6 +211,18 @@ class API {
     })()
   }
 
+  async getDiskStatus() {
+    return catchInternal(async () => {
+      const response = await this.client.get<{
+        level: 'none' | 'warning' | 'critical'
+        threshold: number
+        highestUsage: number
+        diskName: string
+      }>('/system/disk-status')
+      return response.data
+    })()
+  }
+
   async getDebugInfo() {
     return catchInternal(async () => {
       const response = await this.client.get<{ debugInfo: string }>('/system/debug-info')

admin/start/routes.ts

@@ -137,6 +137,7 @@ router
 
 router
   .group(() => {
+    router.get('/disk-status', [SystemController, 'getDiskStatus'])
     router.get('/debug-info', [SystemController, 'getDebugInfo'])
     router.get('/info', [SystemController, 'getSystemInfo'])
     router.get('/internet-status', [SystemController, 'getInternetStatus'])

admin/types/kv_store.ts

@@ -10,6 +10,8 @@ export const KV_STORE_SCHEMA = {
   'ui.theme':                   'string',
   'ai.assistantCustomName':     'string',
   'gpu.type':                   'string',
+  'disk.warningThreshold':      'string',
+  'disk.criticalThreshold':     'string',
 } as const
 
 type KVTagToType<T extends string> = T extends 'boolean' ? boolean : string