Expand ecash explorer capabilities

Add Fedimint discovery, dual SQLite/Postgres storage, richer review handling, and generated social imagery.

web/src/lib/api.ts

@@ -1,4 +1,4 @@
-import type { Health, MintDetail, MintListItem, Stats } from '@cashumints/shared';
+import type { FedimintDetail, Health, MintDetail, MintListItem, Stats } from '@cashumints/shared';
 
 /**
  * Build-time API base. Islands use PUBLIC_API_BASE (see api-client.ts) so the browser
@@ -15,10 +15,21 @@ async function get<T>(path: string): Promise<T> {
 /**
  * Build-time fetches. A failure here fails the build on purpose: shipping a site with
  * an empty mint list would be worse than not shipping.
+ *
+ * `fetchMints` asks for `type=cashu` rather than for everything, which is what keeps
+ * /mints, the mint pages, the home page grid and the sitemap's mint entries meaning
+ * exactly what they meant before federations were indexed. Federations are their own
+ * call, their own pages and their own count; nothing has to filter a mixed list and
+ * nothing silently grew.
  */
-export const fetchMints = (): Promise<MintListItem[]> => get<MintListItem[]>('/api/mints');
+export const fetchMints = (): Promise<MintListItem[]> => get<MintListItem[]>('/api/mints?type=cashu');
+export const fetchFedimints = (): Promise<MintListItem[]> =>
+  get<MintListItem[]>('/api/mints?type=fedimint');
 export const fetchMint = (host: string): Promise<MintDetail> =>
   get<MintDetail>(`/api/mints/${encodeURIComponent(host)}`);
+/** The same endpoint, typed for a federation's flattened fields. */
+export const fetchFedimint = (host: string): Promise<FedimintDetail> =>
+  get<FedimintDetail>(`/api/mints/${encodeURIComponent(host)}`);
 export const fetchStats = (): Promise<Stats> => get<Stats>('/api/stats');
 
 /** Health is allowed to be down at build time: the ticker just renders without it. */