chore(deps): upgrade Next/React ecosystem, sync lockfile, and add CI/docker configs

- bump next to 16.0.0, react/react-dom to 19.2.0 and update related deps (react-day-picker, react-hook-form, zod, lightningcss, scheduler, typescript, @types/*, tailwind tooling, etc.) in package.json and bun.lock
- add overrides for @types/react and @types/react-dom
- remove --turbopack flags from package.json scripts and configure turbopack root in next.config.ts
- tighten tsconfig (jsx -> react-jsx, include extra .next dev types, formatting)
- add GitHub Actions workflow for Docker build/push (.github/workflows/main.yml)
- add Dockerfile and compose.yml for building/running containerized app

Dockerfile

@@ -0,0 +1,41 @@
+# syntax=docker.io/docker/dockerfile:1
+
+FROM oven/bun:latest AS base
+
+# Install dependencies only when needed
+FROM base AS deps
+WORKDIR /app
+
+COPY package.json bun.lockb* package-lock.json* pnpm-lock.yaml* .npmrc* ./
+RUN bun install --frozen-lockfile
+
+
+# Rebuild the source code only when needed
+FROM base AS builder
+WORKDIR /app
+COPY --from=deps /app/node_modules ./node_modules
+COPY . .
+
+RUN bun run build
+
+# Production image, copy all the files and run next
+FROM base AS runner
+WORKDIR /app
+
+ENV NODE_ENV=production
+
+RUN addgroup --system --gid 1001 nodejs
+RUN adduser --system --uid 1001 nextjs
+
+COPY --from=builder /app/public ./public
+
+COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
+COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
+
+USER nextjs
+
+EXPOSE 3000
+
+ENV PORT=3000
+ENV HOSTNAME="0.0.0.0"
+CMD ["bun", "run", "server.js"]