feat: migrate to Node.js 24 LTS (#11)

- Dockerfile: node:20-alpine → node:24-alpine (all 3 stages)
- CI: node-version 20 → 24
- @types/node: 20.x → 24.x

Node 20 reaches EOL April 30, 2026. Node 24 is the current Active
LTS with support through April 2028.

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: smdion

.github/workflows/ci.yml

@@ -17,7 +17,7 @@ jobs:
 
       - uses: actions/setup-node@v6
         with:
-          node-version: 20
+          node-version: 24
           cache: pnpm
 
       - run: pnpm install --frozen-lockfile

Dockerfile

@@ -1,13 +1,13 @@
 # Stage 1: Install dependencies
-FROM node:20-alpine AS deps
+FROM node:24-alpine AS deps
 RUN apk add --no-cache python3 make g++
 RUN corepack enable && corepack prepare pnpm@10.32.1 --activate
 WORKDIR /app
 COPY package.json pnpm-lock.yaml ./
 RUN pnpm install --frozen-lockfile
 
 # Stage 2: Build
-FROM node:20-alpine AS builder
+FROM node:24-alpine AS builder
 RUN corepack enable && corepack prepare pnpm@10.32.1 --activate
 WORKDIR /app
 COPY --from=deps /app/node_modules ./node_modules
@@ -34,7 +34,7 @@ RUN pnpm build
 # Compile db-migrate.ts to JS so the runner stage doesn't need tsx
 
 # Stage 3: Production runner
-FROM node:20-alpine AS runner
+FROM node:24-alpine AS runner
 WORKDIR /app
 
 ENV NODE_ENV=production

package.json

@@ -60,7 +60,7 @@
     "@testing-library/jest-dom": "^6.9.1",
     "@testing-library/react": "^16.3.2",
     "@types/better-sqlite3": "^7.6.13",
-    "@types/node": "^20",
+    "@types/node": "^24.12.0",
     "@types/pg": "^8.20.0",
     "@types/react": "^18",
     "@types/react-dom": "^18",