refactor: update dev-scripts for unified launcher model

Actualiza todos los scripts de desarrollo para el modelo de launcher unificado.
Ya no se inician procesos individuales por agente — un solo proceso corre todos.

_common.sh: helpers para launcher unificado (is_launcher_running, read_launcher_pid,
launcher_pid_file/log_file), agent_status() ahora deriva estado del launcher
start.sh: inicia el launcher unificado (sin -c flag, descubre todos los agentes)
stop.sh: detiene el launcher unificado
restart.sh: stop + start del launcher
ps.sh: muestra stats del proceso launcher + lista de agentes enabled/disabled
logs.sh: tail -f del log unificado del launcher
server.sh: añade comandos enable/disable para gestionar agentes, elimina start/stop por agente
remove.sh: simplificado a toggle enabled:false + sugerencia de restart

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

dev-scripts/_common.sh

@@ -114,13 +114,40 @@ agent_status() {
   local id="$1" enabled="$2"
   if [[ "$enabled" != "true" ]]; then
     echo "disabled"
-  elif is_running "$id"; then
+  elif is_launcher_running; then
     echo "running"
   else
     echo "stopped"
   fi
 }
 
+# ── Unified launcher helpers ───────────────────────────────────────────────
+LAUNCHER_ID="launcher"
+
+launcher_pid_file() { echo "$RUN_DIR/$LAUNCHER_ID.pid"; }
+launcher_log_file() { echo "$RUN_DIR/$LAUNCHER_ID.log"; }
+
+read_launcher_pid() {
+  local f; f="$(launcher_pid_file)"
+  [[ -f "$f" ]] && cat "$f" || echo 0
+}
+
+is_launcher_running() {
+  local pid; pid="$(read_launcher_pid)"
+  if [[ "$pid" -gt 0 ]] && kill -0 "$pid" 2>/dev/null; then
+    return 0
+  fi
+  # Fallback: search for launcher process without -c flag
+  local pids; pids="$(pgrep -f 'launcher.*--log-level' 2>/dev/null || true)"
+  if [[ -n "$pids" ]]; then
+    local first_pid; first_pid="$(echo "$pids" | head -1)"
+    echo "$first_pid" > "$(launcher_pid_file)"
+    return 0
+  fi
+  [[ "$pid" -gt 0 ]] && rm -f "$(launcher_pid_file)"
+  return 1
+}
+
 # ── Agent discovery ────────────────────────────────────────────────────────
 # Prints: id|version|enabled|description  (one line per agent)
 list_agents_raw() {