chore: auto-commit (5 archivos)

- app.md
- backend/chat.go
- Dockerfile
- docker-compose.yml
- traefik-dynamic.yml

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Dockerfile

@@ -0,0 +1,28 @@
+FROM golang:1.25-bookworm AS builder
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    gcc g++ libsqlite3-dev pkg-config ca-certificates \
+    && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /build
+COPY . .
+
+WORKDIR /build/apps/kanban/backend
+RUN CGO_ENABLED=1 go build -ldflags='-s -w' -o /kanban .
+
+# --- Runtime ---
+FROM debian:bookworm-slim
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    libsqlite3-0 libstdc++6 ca-certificates tzdata \
+    && rm -rf /var/lib/apt/lists/*
+
+COPY --from=builder /kanban /usr/local/bin/kanban
+
+WORKDIR /data
+VOLUME /data
+
+EXPOSE 8095
+
+ENTRYPOINT ["/usr/local/bin/kanban"]
+CMD ["--port", "8095", "--db", "/data/operations.db"]