refactor: large refactor around monorepo

Just a commit point while I'm testing stuff. Already decided at this
point to simplify and revert away from PayloadCMS.

Dockerfile

@@ -0,0 +1,61 @@
+FROM oven/bun:1-alpine AS base
+WORKDIR /app
+RUN apk add --no-cache libc6-compat
+
+# Install dependencies
+FROM base AS deps
+COPY package.json bun.lock ./
+COPY packages/db/package.json ./packages/db/
+COPY packages/types/package.json ./packages/types/
+COPY packages/typescript-config/package.json ./packages/typescript-config/
+COPY apps/payload/package.json ./apps/payload/
+COPY apps/web/package.json ./apps/web/
+RUN bun install --frozen-lockfile
+
+# Build everything
+FROM base AS builder
+COPY --from=deps /app ./
+COPY . .
+
+ENV NEXT_TELEMETRY_DISABLED=1
+RUN bun run build
+
+# Compile SvelteKit to standalone executable
+RUN bun build --compile --target=bun --minify --outfile=apps/web/web-server ./apps/web/build/index.js
+
+# Production image
+FROM oven/bun:1-alpine AS runner
+WORKDIR /app
+
+RUN apk add --no-cache caddy && \
+    addgroup --system --gid 1001 nodejs && \
+    adduser --system --uid 1001 nextjs
+
+ENV NODE_ENV=production
+ENV PORT=3000
+ENV NEXT_TELEMETRY_DISABLED=1
+
+# Copy built artifacts
+COPY --from=builder --chown=nextjs:nodejs /app/packages/db/dist ./packages/db/dist
+COPY --from=builder --chown=nextjs:nodejs /app/packages/db/package.json ./packages/db/
+COPY --from=builder --chown=nextjs:nodejs /app/packages/types/dist ./packages/types/dist
+COPY --from=builder --chown=nextjs:nodejs /app/packages/types/package.json ./packages/types/
+
+# Payload standalone build
+COPY --from=builder --chown=nextjs:nodejs /app/apps/payload/.next/standalone ./apps/payload/.next/standalone
+COPY --from=builder --chown=nextjs:nodejs /app/apps/payload/.next/static ./apps/payload/.next/standalone/apps/payload/.next/static
+COPY --from=builder --chown=nextjs:nodejs /app/apps/payload/public ./apps/payload/.next/standalone/apps/payload/public
+COPY --from=builder --chown=nextjs:nodejs /app/apps/payload/src/migrations ./apps/payload/.next/standalone/apps/payload/src/migrations
+
+# Web standalone executable (no node_modules needed)
+COPY --from=builder --chown=nextjs:nodejs /app/apps/web/web-server ./apps/web/
+COPY --from=builder --chown=nextjs:nodejs /app/apps/web/build/client ./apps/web/build/client
+
+# Entrypoint
+COPY --chown=nextjs:nodejs Caddyfile docker-entrypoint.ts ./
+RUN chmod +x docker-entrypoint.ts && \
+    caddy fmt --overwrite Caddyfile
+
+USER nextjs
+EXPOSE ${PORT}
+ENTRYPOINT ["bun", "run", "docker-entrypoint.ts"]