feat: Phase 1 — socle backend FastAPI + frontend Next.js

Backend (FastAPI + SQLAlchemy):
- Modèles : User, Client, Audit, Cible, Vulnérabilité, Action
- Auth JWT (register/login/me) avec bcrypt
- Routes CRUD complets : clients, audits, cibles, vulnérabilités, actions
- Schémas Pydantic v2, migrations Alembic configurées
- Rate limiting (slowapi), CORS, structure scanners/reports pour phase 2

Frontend (Next.js 14 App Router):
- shadcn/ui : Button, Input, Card, Badge, Label
- Page login avec gestion token JWT
- Dashboard avec stats temps réel
- Pages Clients (grille) et Audits (liste) avec recherche
- Layout avec sidebar navigation + protection auth
- Dockerfiles multi-stage (backend + frontend standalone)

Infrastructure:
- docker-compose.yml : postgres, redis, backend, frontend
- docker-compose.prod.yml avec labels Traefik
- .env.example complet
- .gitignore mis à jour

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

frontend/components/layout/header.tsx

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+"use client";
+
+import { Bell } from "lucide-react";
+import { Button } from "@/components/ui/button";
+
+interface HeaderProps {
+  title: string;
+}
+
+export function Header({ title }: HeaderProps) {
+  return (
+    <header className="flex items-center justify-between border-b px-6 py-4 bg-background">
+      <h1 className="text-xl font-semibold">{title}</h1>
+      <div className="flex items-center gap-2">
+        <Button variant="ghost" size="icon">
+          <Bell className="h-5 w-5" />
+        </Button>
+      </div>
+    </header>
+  );
+}

frontend/components/layout/sidebar.tsx

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+"use client";
+
+import Link from "next/link";
+import { usePathname } from "next/navigation";
+import { Shield, Users, ClipboardList, LayoutDashboard, LogOut } from "lucide-react";
+import { cn } from "@/lib/utils";
+import { removeToken } from "@/lib/auth";
+import { useRouter } from "next/navigation";
+
+const navItems = [
+  { href: "/dashboard", label: "Tableau de bord", icon: LayoutDashboard },
+  { href: "/clients", label: "Clients", icon: Users },
+  { href: "/audits", label: "Audits", icon: ClipboardList },
+];
+
+export function Sidebar() {
+  const pathname = usePathname();
+  const router = useRouter();
+
+  function handleLogout() {
+    removeToken();
+    router.push("/login");
+  }
+
+  return (
+    <aside className="flex h-screen w-64 flex-col border-r bg-card">
+      {/* Logo */}
+      <div className="flex items-center gap-2 px-6 py-5 border-b">
+        <Shield className="h-7 w-7 text-primary" />
+        <span className="text-xl font-bold">AuditShield</span>
+      </div>
+
+      {/* Navigation */}
+      <nav className="flex-1 px-3 py-4 space-y-1">
+        {navItems.map(({ href, label, icon: Icon }) => (
+          <Link
+            key={href}
+            href={href}
+            className={cn(
+              "flex items-center gap-3 rounded-md px-3 py-2 text-sm font-medium transition-colors",
+              pathname.startsWith(href)
+                ? "bg-primary text-primary-foreground"
+                : "text-muted-foreground hover:bg-accent hover:text-accent-foreground"
+            )}
+          >
+            <Icon className="h-4 w-4" />
+            {label}
+          </Link>
+        ))}
+      </nav>
+
+      {/* Logout */}
+      <div className="px-3 py-4 border-t">
+        <button
+          onClick={handleLogout}
+          className="flex w-full items-center gap-3 rounded-md px-3 py-2 text-sm font-medium text-muted-foreground hover:bg-accent hover:text-accent-foreground transition-colors"
+        >
+          <LogOut className="h-4 w-4" />
+          Déconnexion
+        </button>
+      </div>
+    </aside>
+  );
+}

frontend/components/ui/badge.tsx

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+import * as React from "react";
+import { cva, type VariantProps } from "class-variance-authority";
+import { cn } from "@/lib/utils";
+
+const badgeVariants = cva(
+  "inline-flex items-center rounded-full border px-2.5 py-0.5 text-xs font-semibold transition-colors focus:outline-none focus:ring-2 focus:ring-ring focus:ring-offset-2",
+  {
+    variants: {
+      variant: {
+        default: "border-transparent bg-primary text-primary-foreground hover:bg-primary/80",
+        secondary: "border-transparent bg-secondary text-secondary-foreground hover:bg-secondary/80",
+        destructive: "border-transparent bg-destructive text-destructive-foreground hover:bg-destructive/80",
+        outline: "text-foreground",
+        critique: "border-transparent bg-red-600 text-white",
+        important: "border-transparent bg-orange-500 text-white",
+        modere: "border-transparent bg-yellow-500 text-white",
+        faible: "border-transparent bg-green-500 text-white",
+      },
+    },
+    defaultVariants: { variant: "default" },
+  }
+);
+
+export interface BadgeProps
+  extends React.HTMLAttributes<HTMLDivElement>,
+    VariantProps<typeof badgeVariants> {}
+
+function Badge({ className, variant, ...props }: BadgeProps) {
+  return <div className={cn(badgeVariants({ variant }), className)} {...props} />;
+}
+
+export { Badge, badgeVariants };

frontend/components/ui/button.tsx

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+import * as React from "react";
+import { Slot } from "@radix-ui/react-slot";
+import { cva, type VariantProps } from "class-variance-authority";
+import { cn } from "@/lib/utils";
+
+const buttonVariants = cva(
+  "inline-flex items-center justify-center whitespace-nowrap rounded-md text-sm font-medium ring-offset-background transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:pointer-events-none disabled:opacity-50",
+  {
+    variants: {
+      variant: {
+        default: "bg-primary text-primary-foreground hover:bg-primary/90",
+        destructive: "bg-destructive text-destructive-foreground hover:bg-destructive/90",
+        outline: "border border-input bg-background hover:bg-accent hover:text-accent-foreground",
+        secondary: "bg-secondary text-secondary-foreground hover:bg-secondary/80",
+        ghost: "hover:bg-accent hover:text-accent-foreground",
+        link: "text-primary underline-offset-4 hover:underline",
+      },
+      size: {
+        default: "h-10 px-4 py-2",
+        sm: "h-9 rounded-md px-3",
+        lg: "h-11 rounded-md px-8",
+        icon: "h-10 w-10",
+      },
+    },
+    defaultVariants: {
+      variant: "default",
+      size: "default",
+    },
+  }
+);
+
+export interface ButtonProps
+  extends React.ButtonHTMLAttributes<HTMLButtonElement>,
+    VariantProps<typeof buttonVariants> {
+  asChild?: boolean;
+}
+
+const Button = React.forwardRef<HTMLButtonElement, ButtonProps>(
+  ({ className, variant, size, asChild = false, ...props }, ref) => {
+    const Comp = asChild ? Slot : "button";
+    return (
+      <Comp className={cn(buttonVariants({ variant, size, className }))} ref={ref} {...props} />
+    );
+  }
+);
+Button.displayName = "Button";
+
+export { Button, buttonVariants };

frontend/components/ui/card.tsx

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+import * as React from "react";
+import { cn } from "@/lib/utils";
+
+const Card = React.forwardRef<HTMLDivElement, React.HTMLAttributes<HTMLDivElement>>(
+  ({ className, ...props }, ref) => (
+    <div
+      ref={ref}
+      className={cn("rounded-lg border bg-card text-card-foreground shadow-sm", className)}
+      {...props}
+    />
+  )
+);
+Card.displayName = "Card";
+
+const CardHeader = React.forwardRef<HTMLDivElement, React.HTMLAttributes<HTMLDivElement>>(
+  ({ className, ...props }, ref) => (
+    <div ref={ref} className={cn("flex flex-col space-y-1.5 p-6", className)} {...props} />
+  )
+);
+CardHeader.displayName = "CardHeader";
+
+const CardTitle = React.forwardRef<HTMLParagraphElement, React.HTMLAttributes<HTMLHeadingElement>>(
+  ({ className, ...props }, ref) => (
+    <h3
+      ref={ref}
+      className={cn("text-2xl font-semibold leading-none tracking-tight", className)}
+      {...props}
+    />
+  )
+);
+CardTitle.displayName = "CardTitle";
+
+const CardDescription = React.forwardRef<
+  HTMLParagraphElement,
+  React.HTMLAttributes<HTMLParagraphElement>
+>(({ className, ...props }, ref) => (
+  <p ref={ref} className={cn("text-sm text-muted-foreground", className)} {...props} />
+));
+CardDescription.displayName = "CardDescription";
+
+const CardContent = React.forwardRef<HTMLDivElement, React.HTMLAttributes<HTMLDivElement>>(
+  ({ className, ...props }, ref) => (
+    <div ref={ref} className={cn("p-6 pt-0", className)} {...props} />
+  )
+);
+CardContent.displayName = "CardContent";
+
+const CardFooter = React.forwardRef<HTMLDivElement, React.HTMLAttributes<HTMLDivElement>>(
+  ({ className, ...props }, ref) => (
+    <div ref={ref} className={cn("flex items-center p-6 pt-0", className)} {...props} />
+  )
+);
+CardFooter.displayName = "CardFooter";
+
+export { Card, CardHeader, CardFooter, CardTitle, CardDescription, CardContent };

frontend/components/ui/input.tsx

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+import * as React from "react";
+import { cn } from "@/lib/utils";
+
+export interface InputProps extends React.InputHTMLAttributes<HTMLInputElement> {}
+
+const Input = React.forwardRef<HTMLInputElement, InputProps>(({ className, type, ...props }, ref) => {
+  return (
+    <input
+      type={type}
+      className={cn(
+        "flex h-10 w-full rounded-md border border-input bg-background px-3 py-2 text-sm ring-offset-background file:border-0 file:bg-transparent file:text-sm file:font-medium placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50",
+        className
+      )}
+      ref={ref}
+      {...props}
+    />
+  );
+});
+Input.displayName = "Input";
+
+export { Input };

frontend/components/ui/label.tsx

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+"use client";
+
+import * as React from "react";
+import * as LabelPrimitive from "@radix-ui/react-label";
+import { cva, type VariantProps } from "class-variance-authority";
+import { cn } from "@/lib/utils";
+
+const labelVariants = cva(
+  "text-sm font-medium leading-none peer-disabled:cursor-not-allowed peer-disabled:opacity-70"
+);
+
+const Label = React.forwardRef<
+  React.ElementRef<typeof LabelPrimitive.Root>,
+  React.ComponentPropsWithoutRef<typeof LabelPrimitive.Root> & VariantProps<typeof labelVariants>
+>(({ className, ...props }, ref) => (
+  <LabelPrimitive.Root ref={ref} className={cn(labelVariants(), className)} {...props} />
+));
+Label.displayName = LabelPrimitive.Root.displayName;
+
+export { Label };