Add memo engagement, Local Docker-Compose rig (frontend)

Dockerfile.dev

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+# syntax=docker/dockerfile:1.7
+# Dev image for local docker-compose. Source is bind-mounted at runtime;
+# node_modules lives in an anonymous volume so the container's deps win over
+# whatever (if anything) is in the host tree.
+
+FROM node:22.22.2-bookworm-slim
+
+ENV PNPM_HOME=/pnpm
+ENV PATH=$PNPM_HOME:$PATH
+ENV NEXT_TELEMETRY_DISABLED=1
+
+RUN corepack enable && corepack prepare pnpm@9.5.0 --activate
+
+WORKDIR /app
+
+COPY package.json pnpm-lock.yaml ./
+RUN --mount=type=cache,id=pnpm,target=/pnpm/store \
+    pnpm install --frozen-lockfile --prefer-offline
+
+EXPOSE 5050
+
+CMD ["pnpm", "run", "dev"]

src/app/api/revalidate/route.ts

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+import { NextRequest, NextResponse } from "next/server";
+import { revalidateTag } from "next/cache";
+
+export const runtime = "nodejs";
+export const dynamic = "force-dynamic";
+
+export async function POST(req: NextRequest) {
+  const secret = process.env.REVALIDATE_SECRET;
+  if (!secret) {
+    return NextResponse.json({ error: "revalidation_disabled" }, { status: 503 });
+  }
+
+  const auth = req.headers.get("authorization");
+  if (auth !== `Bearer ${secret}`) {
+    return NextResponse.json({ error: "unauthorized" }, { status: 401 });
+  }
+
+  let body: { tag?: string; tags?: string[] };
+  try {
+    body = (await req.json()) as { tag?: string; tags?: string[] };
+  } catch {
+    return NextResponse.json({ error: "invalid_json" }, { status: 400 });
+  }
+
+  const tags = body.tags ?? (body.tag ? [body.tag] : []);
+  if (tags.length === 0) {
+    return NextResponse.json({ error: "no_tags" }, { status: 400 });
+  }
+
+  for (const tag of tags) revalidateTag(tag);
+  return NextResponse.json({ ok: true, revalidated: tags });
+}