From bcce40d2cbcc37b5c49337d6783f8573ce959931 Mon Sep 17 00:00:00 2001
From: Ben Stull <ben.stull@wiggleverse.org>
Date: Sun, 7 Jun 2026 17:38:16 -0700
Subject: [PATCH] =?UTF-8?q?feat(slice3):=20listRFCs=20accepts=20facet=20se?=
 =?UTF-8?q?lections,=20returns=20{items,facets}=20(=C2=A722.4a)?=
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---
 frontend/src/api.js | 24 ++++++++++++++++++++----
 1 file changed, 20 insertions(+), 4 deletions(-)

diff --git a/frontend/src/api.js b/frontend/src/api.js
index f0535ce..2ea0f05 100644
--- a/frontend/src/api.js
+++ b/frontend/src/api.js
@@ -203,11 +203,27 @@ export async function createProject({ projectId, name, type, visibility, content
 // §22.4 (Plan B) / §22 S2: per-collection serving. With a projectId + a
 // collectionId, read the collection-scoped routes; with only a projectId, the
 // project default-collection compat path; with neither, the unscoped path.
-export async function listRFCs(projectId, collectionId) {
-  if (projectId && collectionId) {
-    return jsonOrThrow(await fetch(`/api/projects/${projectId}/collections/${collectionId}/rfcs`))
+// §22.4a SLICE-3: faceted catalog. `opts.selections` is { field: string[] }
+// (each non-empty array becomes repeated query params, OR within the field);
+// `opts.malformed` toggles the malformed-only filter. Returns the full payload
+// { items, facets } — callers read both. With no selections it behaves as the
+// pre-SLICE-3 list (and a no-fields collection returns facets: {}). Facets are
+// served only on the project/collection-scoped paths, not the unscoped one.
+export async function listRFCs(projectId, collectionId, opts = {}) {
+  const { selections = {}, malformed = false } = opts
+  const qs = new URLSearchParams()
+  for (const [field, values] of Object.entries(selections)) {
+    for (const v of values) qs.append(field, v)
   }
-  const url = projectId ? `/api/projects/${projectId}/rfcs` : '/api/rfcs'
+  if (malformed) qs.set('malformed', 'true')
+  const query = qs.toString()
+  let base
+  if (projectId && collectionId) {
+    base = `/api/projects/${projectId}/collections/${collectionId}/rfcs`
+  } else {
+    base = projectId ? `/api/projects/${projectId}/rfcs` : '/api/rfcs'
+  }
+  const url = query ? `${base}?${query}` : base
   return jsonOrThrow(await fetch(url))
 }