feat(remote-speakers): enhance remote speaker management and API integration

- Added support for remote speaker configuration in the README and documentation.
- Implemented a new endpoint for retrieving the bundle signing public key.
- Updated the `evobgp-agent` to include a `serve` command for Panel→Node sync API.
- Enhanced CI workflow to validate remote speaker compose files.
- Introduced new fields in the API and UI for managing speaker metadata, including dispatch status and sync status.
- Improved error handling and response formatting in speaker-related API endpoints.
- Updated documentation to reflect changes in remote speaker functionality and usage guidelines.

internal/agentserver/server_test.go

@@ -0,0 +1,63 @@
+package agentserver_test
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+
+	"evobgp/internal/agentserver"
+)
+
+func TestAgentHealth_requiresAuth(t *testing.T) {
+	t.Parallel()
+	srv := httptest.NewServer(agentserver.New(agentserver.Config{
+		Secret:    "test-secret",
+		SpeakerID: "sp-1",
+	}).Handler())
+	defer srv.Close()
+
+	resp, err := http.Get(srv.URL + "/v1/agent/health")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer func() { _ = resp.Body.Close() }()
+	if resp.StatusCode != http.StatusUnauthorized {
+		t.Fatalf("want 401, got %d", resp.StatusCode)
+	}
+
+	req, _ := http.NewRequest(http.MethodGet, srv.URL+"/v1/agent/health", nil)
+	req.Header.Set("Authorization", "Bearer test-secret")
+	resp2, err := http.DefaultClient.Do(req)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer func() { _ = resp2.Body.Close() }()
+	if resp2.StatusCode != http.StatusOK {
+		t.Fatalf("want 200, got %d", resp2.StatusCode)
+	}
+}
+
+func TestAgentSync_badAuth(t *testing.T) {
+	t.Parallel()
+	srv := httptest.NewServer(agentserver.New(agentserver.Config{
+		Secret:          "right",
+		SpeakerID:       "sp-1",
+		ControlPlaneURL: "http://127.0.0.1:1",
+		NodeToken:       "tok",
+		PubKeyB64:       "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=",
+		ExtractDir:      t.TempDir(),
+	}).Handler())
+	defer srv.Close()
+
+	req, _ := http.NewRequest(http.MethodPost, srv.URL+"/v1/agent/sync", strings.NewReader("{}"))
+	req.Header.Set("Authorization", "Bearer wrong")
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer func() { _ = resp.Body.Close() }()
+	if resp.StatusCode != http.StatusUnauthorized {
+		t.Fatalf("want 401, got %d", resp.StatusCode)
+	}
+}