Initial commit: WaMarket MVP

Marketplace inversée (Next.js 16 App Router + Supabase Cloud) : auth,
schéma + RLS, publication de besoins avec upload d'images, feed avec
filtres, offres, acceptation via RPC, messagerie temps réel,
dashboards, et Dockerfile pour déploiement Coolify.

lib/actions/auth.ts

@@ -0,0 +1,73 @@
+"use server";
+
+import { redirect } from "next/navigation";
+import { createClient } from "@/lib/supabase/server";
+import {
+  LoginFormSchema,
+  SignupFormSchema,
+  type FormState,
+} from "@/lib/validations/auth";
+
+export async function signup(
+  _state: FormState,
+  formData: FormData
+): Promise<FormState> {
+  const validatedFields = SignupFormSchema.safeParse({
+    fullName: formData.get("fullName"),
+    email: formData.get("email"),
+    password: formData.get("password"),
+  });
+
+  if (!validatedFields.success) {
+    return { errors: validatedFields.error.flatten().fieldErrors };
+  }
+
+  const { fullName, email, password } = validatedFields.data;
+  const supabase = await createClient();
+
+  const { error } = await supabase.auth.signUp({
+    email,
+    password,
+    options: { data: { full_name: fullName } },
+  });
+
+  if (error) {
+    return { message: error.message };
+  }
+
+  redirect("/dashboard/my-needs");
+}
+
+export async function login(
+  _state: FormState,
+  formData: FormData
+): Promise<FormState> {
+  const validatedFields = LoginFormSchema.safeParse({
+    email: formData.get("email"),
+    password: formData.get("password"),
+  });
+
+  if (!validatedFields.success) {
+    return { errors: validatedFields.error.flatten().fieldErrors };
+  }
+
+  const { email, password } = validatedFields.data;
+  const supabase = await createClient();
+
+  const { error } = await supabase.auth.signInWithPassword({
+    email,
+    password,
+  });
+
+  if (error) {
+    return { message: "Email ou mot de passe incorrect." };
+  }
+
+  redirect("/dashboard/my-needs");
+}
+
+export async function logout() {
+  const supabase = await createClient();
+  await supabase.auth.signOut();
+  redirect("/auth/login");
+}