feat(documents): prepare inbox suggestions and add entity assignments

frontend/composables/useDocumentInboxCount.ts

@@ -0,0 +1,31 @@
+import { createSharedComposable } from "@vueuse/core"
+
+export const useDocumentInboxCount = createSharedComposable(() => {
+  const auth = useAuthStore()
+  const { $api } = useNuxtApp()
+  const count = ref(0)
+  const scope = computed(() => auth.user?.id && auth.activeTenant && !auth.profile?.customer_for_portal && auth.activeTenantData?.features?.files !== false
+    ? `${auth.user.id}:${auth.activeTenant}` : "")
+  let version = 0
+  let disposed = false
+  let controller: AbortController | undefined
+  let timer: ReturnType<typeof setTimeout> | undefined
+  const refresh = async () => {
+    const request = ++version
+    clearTimeout(timer)
+    controller?.abort()
+    if (!scope.value || disposed) { count.value = 0; return }
+    controller = new AbortController()
+    try {
+      const result = await $api<{ total: number }>("/api/document-inbox/count", { signal: controller.signal })
+      if (!disposed && request === version) count.value = Math.max(0, Number(result.total) || 0)
+    } catch {
+      if (request === version) count.value = 0
+    } finally {
+      if (!disposed && request === version && scope.value) timer = setTimeout(refresh, 10000)
+    }
+  }
+  watch(scope, () => { count.value = 0; void refresh() }, { immediate: true, flush: "sync" })
+  onScopeDispose(() => { disposed = true; version++; controller?.abort(); clearTimeout(timer) })
+  return { count, refresh }
+})