Add server-backed file property filters

webui/scripts/test-file-property-filters-structure.mjs

@@ -0,0 +1,36 @@
+import { readFileSync } from "node:fs";
+
+const page = readFileSync(new URL("../src/features/files/FilesPage.tsx", import.meta.url), "utf8").replace(/\s+/g, " ");
+const api = readFileSync(new URL("../src/api/files.ts", import.meta.url), "utf8").replace(/\s+/g, " ");
+
+function assertIncludes(source, fragment, message) {
+  if (!source.includes(fragment.replace(/\s+/g, " "))) throw new Error(message);
+}
+
+assertIncludes(
+  api,
+  "campaign_usage?: FileCampaignUsageFilter; audit_relevant?: boolean;",
+  "the Files API must expose structured campaign and audit filters"
+);
+assertIncludes(
+  api,
+  "do { const response = await listFiles",
+  "property filtering must traverse every server result page"
+);
+assertIncludes(
+  page,
+  "if (propertyFiltersActive && propertyFilterResults) return propertyFilterResults;",
+  "server-filtered rows must replace, not narrow, the currently loaded explorer window"
+);
+assertIncludes(
+  page,
+  '<option value="unlinked">Not linked or used</option>',
+  "the high-priority unlinked campaign-file filter must remain available"
+);
+assertIncludes(
+  page,
+  "setPropertyFilterTotal(response.total);",
+  "the UI must retain the exact server-side filtered count"
+);
+
+console.log("Files property filters cover the complete server result window.");