feat(api): /api/icon-sets — list/serve/upload(zip,url)/delete

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

lib/api/routes/icon_sets.js

@@ -0,0 +1,51 @@
+// lib/api/routes/icon_sets.js
+import { Router } from 'express';
+import multer from 'multer';
+import { requireOwner } from '../cap.js';
+import { asyncWrap } from '../errors.js';
+import * as sets from '../../icons/sets.js';
+import { processFile, unpackZip, fetchUrl, isZip } from '../../icons/ingest.js';
+
+export const router = Router();
+const upload = multer({ storage: multer.memoryStorage(), limits: { fileSize: 6 * 1024 * 1024, files: 50 } });
+
+// GET /api/icon-sets — list sets + their icons (open; <img> can't send bearer).
+router.get('/', asyncWrap(async (_req, res) => res.json(await sets.listSets())));
+
+// GET /api/icon-sets/:set/:file — serve one icon.
+router.get('/:set/:file', asyncWrap(async (req, res) => {
+  let buf;
+  try { buf = await sets.readIcon(req.params.set, req.params.file); }
+  catch (e) { return res.status(e.message === 'bad_slug' ? 400 : 404).end(); }
+  const ct = req.params.file.endsWith('.svg') ? 'image/svg+xml'
+    : req.params.file.endsWith('.png') ? 'image/png' : 'image/jpeg';
+  res.set('Content-Type', ct).set('Cache-Control', 'public, max-age=86400').send(buf);
+}));
+
+// POST /api/icon-sets/:set — owner upload: multipart files (incl .zip) and/or { url }.
+router.post('/:set', requireOwner, upload.array('files'), asyncWrap(async (req, res) => {
+  const set = req.params.set;
+  const items = [];                                   // [{name, buffer}]
+  for (const f of req.files || []) {
+    if (isZip(f.buffer)) items.push(...unpackZip(f.buffer));
+    else items.push(processFile({ name: f.originalname, buffer: f.buffer }));
+  }
+  if (req.body?.url) {
+    const { buffer } = await fetchUrl(req.body.url);
+    if (isZip(buffer)) items.push(...unpackZip(buffer));
+    else {
+      const name = new URL(req.body.url).pathname.split('/').pop() || 'icon.png';
+      items.push(processFile({ name, buffer }));
+    }
+  }
+  if (!items.length) return res.status(400).json({ error: { code: 'no_icons' } });
+  for (const it of items) await sets.writeIcon(set, it.name, it.buffer);
+  res.json((await sets.listSets()).find(s => s.set === set) || { set, icons: [] });
+}));
+
+// DELETE /api/icon-sets/:set — owner remove an uploaded set.
+router.delete('/:set', requireOwner, asyncWrap(async (req, res) => {
+  try { await sets.deleteSet(req.params.set); }
+  catch (e) { return res.status(e.message === 'reserved_set' ? 409 : 400).json({ error: { code: e.message } }); }
+  res.json({ ok: true });
+}));