feat: initialize project with Docker, PostgreSQL, Redis, and Vue.js frontend

- Added docker-compose.yml for PostgreSQL and Redis services with health checks.
- Created frontend directory with initial Vue.js setup including package.json, vite.config.ts, and TypeScript configuration.
- Implemented main application structure with App.vue and HomePage.vue components.
- Added message fetching and posting functionality in HomePage.vue.
- Included necessary styles and scripts for Ionic framework integration.
- Developed a dev-stack script to manage Docker containers and run backend/frontend servers.

backend/prisma/seed.ts

@@ -0,0 +1,39 @@
+import { PrismaClient } from "@prisma/client";
+
+const prisma = new PrismaClient();
+
+async function main() {
+  const count = await prisma.message.count();
+  if (count > 0) {
+    console.log("⏭️  Database already seeded, skipping.");
+    return;
+  }
+
+  const root1 = await prisma.message.create({
+    data: {
+      content: "Bienvenue sur XIP — le réseau social sans filtre ni compte.",
+      authorIp: "1.2.3.4",
+    },
+  });
+
+  await prisma.message.create({
+    data: {
+      content: "Pas de compte, ton IP c'est toi.",
+      authorIp: "5.6.7.8",
+    },
+  });
+
+  await prisma.message.create({
+    data: {
+      content: "Réponse au premier message !",
+      authorIp: "9.10.11.12",
+      parentId: root1.id,
+    },
+  });
+
+  console.log("✅  Database seeded with 3 messages.");
+}
+
+main()
+  .catch(console.error)
+  .finally(() => prisma.$disconnect());