chore: auto-commit (3 archivos)

- app.md
- handlers.go
- events.go

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

handlers.go

@@ -7,6 +7,8 @@ import (
 	"net/http"
 	"strings"
 	"time"
+
+	"fn-registry/functions/infra"
 )
 
 const queryTimeout = 5 * time.Second
@@ -15,10 +17,15 @@ const queryTimeout = 5 * time.Second
 type Server struct {
 	pool         *DBPool
 	registryRoot string // raiz del fn_registry (para exec fn ...)
+	hub          *CallMonitorHub
 }
 
 func NewServer(pool *DBPool, registryRoot string) *Server {
-	return &Server{pool: pool, registryRoot: registryRoot}
+	return &Server{
+		pool:         pool,
+		registryRoot: registryRoot,
+		hub:          NewCallMonitorHub(pool),
+	}
 }
 
 // Routes registers all API routes on the given mux.
@@ -39,6 +46,10 @@ func (s *Server) Routes(mux *http.ServeMux) {
 	mux.HandleFunc("POST /api/add/app", s.handleAddApp)
 	mux.HandleFunc("POST /api/add/analysis", s.handleAddAnalysis)
 	mux.HandleFunc("POST /api/add/vault", s.handleAddVault)
+
+	// Issue 0086: WebSocket live stream de ops:call_monitor (calls table).
+	// Hub global con ticker bajo demanda (solo corre con >=1 subscriber).
+	mux.HandleFunc("GET /api/events/call_monitor", s.handleEvents(s.hub))
 }
 
 func (s *Server) handleHealth(w http.ResponseWriter, r *http.Request) {
@@ -315,9 +326,7 @@ func corsMiddleware(next http.Handler) http.Handler {
 }
 
 func writeJSON(w http.ResponseWriter, status int, data any) {
-	w.Header().Set("Content-Type", "application/json")
-	w.WriteHeader(status)
-	json.NewEncoder(w).Encode(data)
+	infra.HTTPJSONResponse(w, status, data)
 }
 
 func writeError(w http.ResponseWriter, status int, msg string) {