chore: import upstream snapshot with attribution

apps/sim/tools/downdetector/list_sites.ts

@@ -0,0 +1,71 @@
+import {
+  DOWNDETECTOR_API_BASE,
+  type DowndetectorListSitesParams,
+  type DowndetectorListSitesResponse,
+} from '@/tools/downdetector/types'
+import { downdetectorHeaders, extractDowndetectorError } from '@/tools/downdetector/utils'
+import type { ToolConfig } from '@/tools/types'
+
+interface RawSite {
+  id?: number
+  name?: string
+  domain?: string
+  country_id?: number
+}
+
+export const listSitesTool: ToolConfig<DowndetectorListSitesParams, DowndetectorListSitesResponse> =
+  {
+    id: 'downdetector_list_sites',
+    name: 'Downdetector List Sites',
+    description:
+      'List all available Downdetector sites (regional status-page domains). Each site groups the companies monitored for a given country/region.',
+    version: '1.0.0',
+
+    params: {
+      apiKey: {
+        type: 'string',
+        required: true,
+        visibility: 'user-only',
+        description: 'Downdetector API Bearer token',
+      },
+    },
+
+    request: {
+      url: () => `${DOWNDETECTOR_API_BASE}/sites`,
+      method: 'GET',
+      headers: (params) => downdetectorHeaders(params.apiKey),
+    },
+
+    transformResponse: async (response: Response) => {
+      const data = await response.json()
+      if (!response.ok) {
+        throw new Error(extractDowndetectorError(data, 'Failed to list sites'))
+      }
+
+      const rows: RawSite[] = Array.isArray(data) ? data : []
+      const sites = rows.map((site) => ({
+        id: site.id ?? null,
+        name: site.name ?? null,
+        domain: site.domain ?? null,
+        countryId: site.country_id ?? null,
+      }))
+
+      return { success: true, output: { sites } }
+    },
+
+    outputs: {
+      sites: {
+        type: 'array',
+        description: 'List of Downdetector sites',
+        items: {
+          type: 'object',
+          properties: {
+            id: { type: 'number', description: 'Site id' },
+            name: { type: 'string', description: 'Site name' },
+            domain: { type: 'string', description: 'Site domain' },
+            countryId: { type: 'number', description: 'Country id for the site' },
+          },
+        },
+      },
+    },
+  }