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/app/di.test.tsx

@@ -0,0 +1,67 @@
+/**
+ * L1 — the DI provider resolves real vs mock gateways from `VITE_USE_MOCK`,
+ * and `useGateways` exposes the injected set (and guards against misuse).
+ */
+import { describe, it, expect, afterEach, vi } from "vitest";
+import { render, screen, renderHook } from "@testing-library/react";
+
+import { MockSystemGateway } from "@/adapters/mock";
+import { DIProvider, useGateways, resolveGateways, shouldUseMock } from "./di";
+
+afterEach(() => {
+  vi.unstubAllEnvs();
+});
+
+describe("shouldUseMock / resolveGateways", () => {
+  it("returns mock gateways when VITE_USE_MOCK=1", () => {
+    vi.stubEnv("VITE_USE_MOCK", "1");
+    expect(shouldUseMock()).toBe(true);
+    expect(resolveGateways().system).toBeInstanceOf(MockSystemGateway);
+  });
+
+  it("returns mock gateways when VITE_USE_MOCK=true", () => {
+    vi.stubEnv("VITE_USE_MOCK", "true");
+    expect(shouldUseMock()).toBe(true);
+  });
+
+  it("returns real (non-mock) gateways otherwise", () => {
+    vi.stubEnv("VITE_USE_MOCK", "");
+    expect(shouldUseMock()).toBe(false);
+    // Real adapter is not the mock implementation.
+    expect(resolveGateways().system).not.toBeInstanceOf(MockSystemGateway);
+  });
+});
+
+describe("DIProvider / useGateways", () => {
+  it("provides explicit gateways to consumers", () => {
+    const gateways = resolveGatewaysMock();
+    const { result } = renderHook(() => useGateways(), {
+      wrapper: ({ children }) => (
+        <DIProvider gateways={gateways}>{children}</DIProvider>
+      ),
+    });
+    expect(result.current).toBe(gateways);
+  });
+
+  it("renders children inside the provider", () => {
+    render(
+      <DIProvider gateways={resolveGatewaysMock()}>
+        <span>ok</span>
+      </DIProvider>,
+    );
+    expect(screen.getByText("ok")).toBeTruthy();
+  });
+
+  it("throws when useGateways is used outside a provider", () => {
+    expect(() => renderHook(() => useGateways())).toThrow(
+      /must be used within a <DIProvider>/,
+    );
+  });
+});
+
+function resolveGatewaysMock() {
+  vi.stubEnv("VITE_USE_MOCK", "1");
+  const g = resolveGateways();
+  vi.unstubAllEnvs();
+  return g;
+}