migrate: switch from bun to pnpm and add zod dependency

Dockerfile

@@ -1,13 +1,16 @@
-# Use Bun's official image
-FROM oven/bun:1 AS base
+# Use Node.js official image
+FROM node:20-alpine AS base
 WORKDIR /app
 
+# Install pnpm
+RUN npm install -g pnpm
+
 # Install dependencies
 FROM base AS deps
-COPY package.json bun.lock* ./
+COPY package.json pnpm-lock.yaml* ./
 COPY patches ./patches
-RUN bun install --frozen-lockfile
-RUN bunx patch-package
+RUN pnpm install --frozen-lockfile
+RUN pnpm patch-package
 
 # Build the application
 FROM base AS builder
@@ -15,7 +18,7 @@ COPY --from=deps /app/node_modules ./node_modules
 COPY . .
 
 # Build the SvelteKit app
-RUN bun run build
+RUN pnpm run build
 
 # Production image
 FROM base AS runner
@@ -38,4 +41,4 @@ COPY --from=builder /app/src/lib/db ./src/lib/db
 EXPOSE 3000
 
 # Start the application
-CMD ["bun", "run", "./build/index.js"]
+CMD ["node", "./build/index.js"]