feat: add E2E test suite with nightly CI, fix dashboard Dockerfile (#52)

compliance-agent/tests/integration/api/health.rs

@@ -0,0 +1,29 @@
+use crate::common::TestServer;
+
+#[tokio::test]
+async fn health_endpoint_returns_ok() {
+    let server = TestServer::start().await;
+
+    let resp = server.get("/api/v1/health").await;
+    assert_eq!(resp.status(), 200);
+
+    let body: serde_json::Value = resp.json().await.unwrap();
+    assert_eq!(body["status"], "ok");
+
+    server.cleanup().await;
+}
+
+#[tokio::test]
+async fn stats_overview_returns_zeroes_on_empty_db() {
+    let server = TestServer::start().await;
+
+    let resp = server.get("/api/v1/stats/overview").await;
+    assert_eq!(resp.status(), 200);
+
+    let body: serde_json::Value = resp.json().await.unwrap();
+    let data = &body["data"];
+    assert_eq!(data["repositories"], 0);
+    assert_eq!(data["total_findings"], 0);
+
+    server.cleanup().await;
+}