feat: add assistant bot with LLM integration and configuration

- Implemented the assistant bot with basic command handling and LLM routing.
- Created configuration file for the assistant bot with personality, behavior, and LLM settings.
- Added system prompt for the assistant bot to define its capabilities and limitations.
- Developed registration script for creating Matrix bot users via Synapse admin API.
- Introduced common development scripts for agent management (start, stop, list, logs).
- Scaffolded new agent creation script to streamline the addition of new agents.
- Implemented agent removal script to disable agents without deleting data.

dev-scripts/remove.sh

@@ -0,0 +1,41 @@
+#!/usr/bin/env bash
+# remove.sh — deshabilita un agente (enabled: false). No borra datos.
+#
+# Uso:
+#   ./dev-scripts/remove.sh assistant-bot
+
+source "$(dirname "$0")/_common.sh"
+
+need_arg "${1:-}"
+TARGET="$1"
+
+found=false
+while IFS='|' read -r id _version _enabled _desc cfg; do
+  [[ "$id" != "$TARGET" ]] && continue
+  found=true
+
+  # Detener si está corriendo
+  if is_running "$id"; then
+    local_pid="$(read_pid "$id")"
+    info "Deteniendo $id (PID $local_pid)..."
+    kill -TERM "$local_pid" 2>/dev/null || true
+    sleep 1
+    kill -0 "$local_pid" 2>/dev/null && kill -9 "$local_pid" 2>/dev/null || true
+    rm -f "$(pid_file "$id")"
+    ok "$id detenido"
+  fi
+
+  # Marcar como disabled en el config (reemplaza solo la primera ocurrencia)
+  if grep -q 'enabled: true' "$cfg"; then
+    # sed compatible con Linux y macOS
+    sed -i 's/enabled: true/enabled: false/' "$cfg"
+    ok "$id marcado como disabled en $cfg"
+  else
+    warn "$id ya estaba marcado como disabled"
+  fi
+
+  dim "  Datos preservados en agents/$id/data/"
+
+done < <(list_agents_raw)
+
+"$found" || fail "Agente '$TARGET' no encontrado"