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/httpapi/routes.go

@@ -55,6 +55,7 @@ func (s *Server) registerV1(m *http.ServeMux) {
 	m.HandleFunc("GET /modules/{module_id}", s.handleGetModule)
 	m.HandleFunc("GET /peers", s.handleListPeers)
 	m.HandleFunc("GET /speakers", s.handleListSpeakers)
+	m.HandleFunc("GET /bundle/signing-public-key", s.handleBundleSigningPublicKey)
 	m.HandleFunc("POST /modules/{module_id}/refresh", s.handleModuleRefresh)
 	m.HandleFunc("POST /tenant/refresh", s.handleTenantRefresh)
 	m.HandleFunc("GET /revisions", s.handleListRevisions)
@@ -167,17 +168,7 @@ func peerJSON(p *store.BGPPeer) map[string]any {
 }
 
 func speakerJSON(sp *store.Speaker) map[string]any {
-	m := map[string]any{
-		"id":       sp.ID,
-		"role":     sp.Role,
-		"endpoint": sp.Endpoint,
-	}
-	if sp.LastAppliedRevisionID != nil {
-		m["last_applied_revision_id"] = *sp.LastAppliedRevisionID
-	} else {
-		m["last_applied_revision_id"] = nil
-	}
-	return m
+	return speakerJSONFromStore(nil, sp)
 }
 
 func (s *Server) handleListModules(w http.ResponseWriter, r *http.Request) {
@@ -399,7 +390,7 @@ func (s *Server) handleListSpeakers(w http.ResponseWriter, r *http.Request) {
 	speakers := s.store.ListSpeakersForTenant(a.TenantID)
 	items := make([]map[string]any, 0, len(speakers))
 	for _, sp := range speakers {
-		items = append(items, speakerJSON(sp))
+		items = append(items, speakerJSONFromStore(s.store, sp))
 	}
 	writeJSON(w, http.StatusOK, map[string]any{
 		"items": items, "next_cursor": nil, "has_more": false,
@@ -985,7 +976,11 @@ func (s *Server) handleNodeBundle(w http.ResponseWriter, r *http.Request) {
 		writeProblem(w, http.StatusNotFound, "Not Found", "revision not found")
 		return
 	}
-	tgz, err := bundle.BuildGzippedTar(rid, sid, rev.PreviewFragments, s.bundlePriv)
+	frags := rev.PreviewFragments
+	if overlaid, err := pipeline.OverlayFragmentsForSpeaker(s.store, a.TenantID, sid, rid, frags); err == nil {
+		frags = overlaid
+	}
+	tgz, err := bundle.BuildGzippedTar(rid, sid, frags, s.bundlePriv)
 	if err != nil {
 		writeInternalError(w, "internal", err)
 		return