Mr. Drew's Assignment Creator — Docker share build

Self-contained Dockerized build for end users. Run via docker compose;
see README.md for setup. Source-only, no sample data or build artifacts.

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

app/api/providers/route.js

@@ -0,0 +1,31 @@
+import { NextResponse } from "next/server";
+import { mergeSettings } from "@/lib/store";
+import { listModels, testConnection } from "@/lib/providers";
+import { resolveGeneration } from "@/lib/model-caps";
+
+export const dynamic = "force-dynamic";
+
+// POST { action: "models" | "test" | "defaults", provider, settings }
+// Settings come from the client form so you can test before saving.
+export async function POST(request) {
+  try {
+    const { action, provider, settings } = await request.json();
+    const merged = mergeSettings(settings);
+    if (action === "models") {
+      const models = await listModels(merged, provider);
+      return NextResponse.json({ models });
+    }
+    if (action === "test") {
+      const result = await testConnection(merged, provider);
+      return NextResponse.json(result);
+    }
+    if (action === "defaults") {
+      const probe = provider ? { ...merged, provider } : merged;
+      const resolved = await resolveGeneration(probe);
+      return NextResponse.json(resolved);
+    }
+    throw new Error("Unknown action.");
+  } catch (e) {
+    return NextResponse.json({ error: String(e.message || e) }, { status: 400 });
+  }
+}