feat(auth): add API token authentication for OpenSheets Companion

- Implement JWT-based authentication system for device access
  - Access tokens (7 day expiry) and refresh tokens (90 day expiry)
  - HMAC-SHA256 signing with timing-safe comparison
  - Token hashing with SHA-256 for secure storage

- Add device authentication endpoints:
  - POST /api/auth/device/token - Login with email/password, get tokens
  - POST /api/auth/device/refresh - Refresh access token
  - POST /api/auth/device/verify - Verify token validity
  - GET /api/auth/device/tokens - List user's API tokens
  - DELETE /api/auth/device/tokens/[id] - Revoke specific token

- Track token usage (last used timestamp and IP)

app/api/auth/device/tokens/[tokenId]/route.ts

@@ -0,0 +1,65 @@
+/**
+ * DELETE /api/auth/device/tokens/[tokenId]
+ *
+ * Revoga um token de API específico.
+ * Requer sessão web autenticada.
+ */
+
+import { auth } from "@/lib/auth/config";
+import { db } from "@/lib/db";
+import { apiTokens } from "@/db/schema";
+import { eq, and } from "drizzle-orm";
+import { headers } from "next/headers";
+import { NextResponse } from "next/server";
+
+interface RouteParams {
+  params: Promise<{ tokenId: string }>;
+}
+
+export async function DELETE(request: Request, { params }: RouteParams) {
+  try {
+    const { tokenId } = await params;
+
+    // Verificar autenticação via sessão web
+    const session = await auth.api.getSession({ headers: await headers() });
+
+    if (!session?.user) {
+      return NextResponse.json(
+        { error: "Não autenticado" },
+        { status: 401 }
+      );
+    }
+
+    // Verificar se token pertence ao usuário
+    const token = await db.query.apiTokens.findFirst({
+      where: and(
+        eq(apiTokens.id, tokenId),
+        eq(apiTokens.userId, session.user.id)
+      ),
+    });
+
+    if (!token) {
+      return NextResponse.json(
+        { error: "Token não encontrado" },
+        { status: 404 }
+      );
+    }
+
+    // Revogar token (soft delete)
+    await db
+      .update(apiTokens)
+      .set({ revokedAt: new Date() })
+      .where(eq(apiTokens.id, tokenId));
+
+    return NextResponse.json({
+      message: "Token revogado com sucesso",
+      tokenId,
+    });
+  } catch (error) {
+    console.error("[API] Error revoking device token:", error);
+    return NextResponse.json(
+      { error: "Erro ao revogar token" },
+      { status: 500 }
+    );
+  }
+}