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_crud.go

@@ -974,12 +974,20 @@ func (s *Server) handlePostSpeaker(w http.ResponseWriter, r *http.Request) {
 		writeProblem(w, http.StatusBadRequest, "Bad Request", "invalid json")
 		return
 	}
+	if err := normalizeSpeakerCreate(&body); err != nil {
+		writeStoreErr(w, err)
+		return
+	}
 	x, err := s.store.CreateSpeaker(a.TenantID, &body)
 	if err != nil {
 		writeStoreErr(w, err)
 		return
 	}
-	writeJSON(w, http.StatusCreated, speakerJSON(x))
+	resp := speakerJSONFromStore(s.store, x)
+	if meta := store.ParseSpeakerMeta(x.MetaJSON); meta.AgentSecret != "" {
+		resp["agent_secret"] = meta.AgentSecret
+	}
+	writeJSON(w, http.StatusCreated, resp)
 }
 
 func (s *Server) handleGetSpeakerByID(w http.ResponseWriter, r *http.Request) {
@@ -992,7 +1000,7 @@ func (s *Server) handleGetSpeakerByID(w http.ResponseWriter, r *http.Request) {
 		writeStoreErr(w, err)
 		return
 	}
-	writeJSON(w, http.StatusOK, speakerJSON(x))
+	writeJSON(w, http.StatusOK, speakerJSONFromStore(s.store, x))
 }
 
 func (s *Server) handlePatchSpeaker(w http.ResponseWriter, r *http.Request) {
@@ -1010,7 +1018,7 @@ func (s *Server) handlePatchSpeaker(w http.ResponseWriter, r *http.Request) {
 		writeStoreErr(w, err)
 		return
 	}
-	writeJSON(w, http.StatusOK, speakerJSON(x))
+	writeJSON(w, http.StatusOK, speakerJSONFromStore(s.store, x))
 }
 
 func (s *Server) handleRevisionPrefixes(w http.ResponseWriter, r *http.Request) {