feat: add main features

Agents for developpement added + frontend add + backend added. Git viewer created + agent and template creator + layout and project creator

frontend/src/shared/ui/IconButton.tsx

@@ -0,0 +1,42 @@
+/** IconButton — a square, icon-only button (close ×, toolbar actions) (LD). */
+
+import { forwardRef } from "react";
+
+import { cn } from "../lib/cn";
+
+export type IconButtonSize = "sm" | "md";
+
+export interface IconButtonProps extends React.ButtonHTMLAttributes<HTMLButtonElement> {
+  /** Required accessible name (icon-only buttons have no text). */
+  "aria-label": string;
+  /** Control size. Defaults to `md`. */
+  size?: IconButtonSize;
+}
+
+const SIZES: Record<IconButtonSize, string> = {
+  sm: "h-6 w-6 text-xs",
+  md: "h-8 w-8 text-sm",
+};
+
+/** A compact, icon-only button styled as a ghost control. */
+export const IconButton = forwardRef<HTMLButtonElement, IconButtonProps>(function IconButton(
+  { size = "md", className, children, ...rest },
+  ref,
+) {
+  return (
+    <button
+      ref={ref}
+      type={rest.type ?? "button"}
+      className={cn(
+        "inline-flex items-center justify-center rounded-md text-muted transition-colors",
+        "hover:bg-raised hover:text-content focus-visible:outline-none",
+        "disabled:opacity-50 disabled:cursor-not-allowed",
+        SIZES[size],
+        className,
+      )}
+      {...rest}
+    >
+      {children}
+    </button>
+  );
+});