Add Ink session recovery and Coolify Docker support

Dockerfile

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+FROM node:22-bookworm-slim AS build
+
+WORKDIR /app
+
+COPY package*.json ./
+RUN npm ci
+
+COPY . .
+RUN npm run build
+
+FROM node:22-bookworm-slim AS runtime
+
+WORKDIR /app
+ENV NODE_ENV=production
+ENV DEFAULT_GAME_ENGINE=ink
+ENV PORT=3000
+
+COPY package*.json ./
+RUN npm ci --omit=dev && npm cache clean --force
+
+COPY --from=build /app/dist ./dist
+COPY --from=build /app/public ./public
+COPY --from=build /app/config ./config
+COPY --from=build /app/data ./data
+COPY --from=build /app/scripts ./scripts
+
+EXPOSE 3000
+
+CMD ["node", "dist/server-ink.js"]