refactor: remove unused authentication files and dependencies; update package.json to streamline dependencies and improve project structure

apps/web/src/lib/auth.ts

@@ -1,7 +0,0 @@
-import { createAuthClient } from "better-auth/client";
-import { convexClient } from "@convex-dev/better-auth/client/plugins";
-
-export const authClient = createAuthClient({
-  baseURL: "http://localhost:5173",
-  plugins: [convexClient()],
-});

apps/web/src/lib/components/ActionGuard.svelte

@@ -0,0 +1,83 @@
+<script lang="ts">
+  import { useQuery } from "convex-svelte";
+  import { api } from "@sgse-app/backend/convex/_generated/api";
+  import type { Id } from "@sgse-app/backend/convex/_generated/dataModel";
+  import { authStore } from "$lib/stores/auth.svelte";
+  import { loginModalStore } from "$lib/stores/loginModal.svelte";
+
+  interface Props {
+    recurso: string;
+    acao: string;
+    children?: any;
+  }
+
+  let { recurso, acao, children }: Props = $props();
+
+  let verificando = $state(true);
+  let permitido = $state(false);
+
+  const permissaoQuery = $derived(
+    authStore.usuario
+      ? useQuery(api.permissoesAcoes.verificarAcao, {
+          usuarioId: authStore.usuario._id as Id<"usuarios">,
+          recurso,
+          acao,
+        })
+      : null
+  );
+
+  $effect(() => {
+    if (!authStore.autenticado) {
+      verificando = false;
+      permitido = false;
+      const currentPath = window.location.pathname;
+      loginModalStore.open(currentPath);
+      return;
+    }
+
+    if (permissaoQuery?.error) {
+      verificando = false;
+      permitido = false;
+    } else if (permissaoQuery && !permissaoQuery.isLoading) {
+      // Backend retorna null quando permitido
+      verificando = false;
+      permitido = true;
+    }
+  });
+</script>
+
+{#if verificando}
+  <div class="flex items-center justify-center min-h-screen">
+    <div class="text-center">
+      <span class="loading loading-spinner loading-lg text-primary"></span>
+      <p class="mt-4 text-base-content/70">Verificando permissões...</p>
+    </div>
+  </div>
+{:else if permitido}
+  {@render children?.()}
+{:else}
+  <div class="flex items-center justify-center min-h-screen">
+    <div class="text-center">
+      <div class="p-4 bg-error/10 rounded-full inline-block mb-4">
+        <svg
+          xmlns="http://www.w3.org/2000/svg"
+          class="h-16 w-16 text-error"
+          fill="none"
+          viewBox="0 0 24 24"
+          stroke="currentColor"
+        >
+          <path
+            stroke-linecap="round"
+            stroke-linejoin="round"
+            stroke-width="2"
+            d="M12 9v2m0 4h.01m-6.938 4h13.856c1.54 0 2.502-1.667 1.732-3L13.732 4c-.77-1.333-2.694-1.333-3.464 0L3.34 16c-.77 1.333.192 3 1.732 3z"
+          />
+        </svg>
+      </div>
+      <h2 class="text-2xl font-bold text-base-content mb-2">Acesso Negado</h2>
+      <p class="text-base-content/70">
+        Você não tem permissão para acessar esta ação.
+      </p>
+    </div>
+  </div>
+{/if}