feat(web): artist detail — category tabs, cover thumbs, album modal

Discography now has category tabs (All/Albums/Singles/EPs/Live/Comps/Other
with counts, defaults to Albums), cover-art thumbnails, and clicking an album
opens the AlbumModal with its tracklist. Detail GET gains ?all=true so the
client filters by tab (studio-only default still governs the artists-list
counts). Replaces the old flat date-sorted list + show-all toggle.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

web/src/app/api/artists/[id]/route.ts

@@ -2,14 +2,17 @@ import { prisma } from "@/lib/db";
 import { Prisma } from "@prisma/client";
 import { isCoreRelease } from "@/lib/release-filter";
 
-export async function GET(_request: Request, { params }: { params: Promise<{ id: string }> }) {
+export async function GET(request: Request, { params }: { params: Promise<{ id: string }> }) {
   const { id } = await params;
+  // ?all=true returns every release type (the detail page filters client-side via tabs);
+  // otherwise honour the artist's showAllTypes flag (studio-only default) as before.
+  const all = new URL(request.url).searchParams.get("all") === "true";
   const artist = await prisma.watchedArtist.findUnique({
     where: { id },
     include: { releases: { orderBy: [{ firstReleaseDate: "desc" }, { album: "asc" }] } },
   });
   if (!artist) return Response.json({ error: "not found" }, { status: 404 });
-  const visibleReleases = artist.showAllTypes ? artist.releases : artist.releases.filter(isCoreRelease);
+  const visibleReleases = all || artist.showAllTypes ? artist.releases : artist.releases.filter(isCoreRelease);
   return Response.json({
     id: artist.id,
     mbid: artist.mbid,