fix(discord) : resolve server-only worker bundle

Dockerfile

@@ -16,6 +16,7 @@ RUN bun build scripts/outbox-worker.ts \
     --outfile=dist/outbox-worker.js && \
     bun build backend/discord.ts \
     --target=bun \
+    --conditions=react-server \
     --minify \
     --outfile=dist/discord.js && \
     bun build scripts/migrate.ts --target=bun --minify --outfile=dist/migrate.js

tests/deployment-contract.test.ts

@@ -103,6 +103,9 @@ describe("production deployment contract", () => {
       "ENV NEXT_PUBLIC_GOOGLE_ADSENSE_CLIENT_ID=${NEXT_PUBLIC_GOOGLE_ADSENSE_CLIENT_ID}",
     );
     expect(dockerfile).toContain("backend/discord.ts");
+    expect(dockerfile).toMatch(
+      /bun build backend\/discord\.ts[\s\S]*?--conditions=react-server[\s\S]*?--outfile=dist\/discord\.js/u,
+    );
     expect(dockerfile).toContain("./worker/discord.js");
   });