server: project config and infrastructure setup

Add package.json (Fastify, Prisma, Redis, JWT), TypeScript config,
Dockerfile, docker-compose with Postgres and Redis services, and
.gitignore with data directory rules.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

server/tsconfig.json

@@ -0,0 +1,17 @@
+{
+  "compilerOptions": {
+    "target": "ES2022",
+    "lib": ["ES2023"],
+    "module": "NodeNext",
+    "moduleResolution": "NodeNext",
+    "outDir": "dist",
+    "rootDir": "src",
+    "strict": true,
+    "esModuleInterop": true,
+    "skipLibCheck": true,
+    "forceConsistentCasingInFileNames": true,
+    "resolveJsonModule": true,
+    "sourceMap": true
+  },
+  "include": ["src"]
+}