feat(share) : services et DTO front (browse, settings, status) + dépendance pdf

- Ajout vue-pdf-embed@2.1.4
- DTO share.ts (FileEntry, Breadcrumb, ShareBrowseResult, ShareStatus, ShareSettings, ShareSettingsWrite, ShareTestResult)
- Service share.ts (browse, getStatus, getDownloadUrl)
- Service share-settings.ts (getSettings, saveSettings, testConnection)

frontend/services/share.ts

@@ -0,0 +1,22 @@
+import type { ShareBrowseResult, ShareStatus } from './dto/share'
+
+export function useShareService() {
+    const api = useApi()
+    const config = useRuntimeConfig()
+
+    async function browse(path: string): Promise<ShareBrowseResult> {
+        const query = path ? `?path=${encodeURIComponent(path)}` : ''
+        return api.get<ShareBrowseResult>(`/share/browse${query}`)
+    }
+
+    async function getStatus(): Promise<ShareStatus> {
+        return api.get<ShareStatus>('/share/status')
+    }
+
+    function getDownloadUrl(path: string, disposition: 'inline' | 'attachment' = 'inline'): string {
+        const base = config.public.apiBase || '/api'
+        return `${base}/share/download?path=${encodeURIComponent(path)}&disposition=${disposition}`
+    }
+
+    return { browse, getStatus, getDownloadUrl }
+}