feat(agent): auto-renice top CPU process after 2 consecutive high-CPU reports

- Agent tracks consecutive reports above cpu_threshold (default 90%)
- After renice_consecutive reports (default 2 = 60s sustained), runs
  renice -n 19 on the top CPU process
- Reports the action back in the heartbeat payload
- Backend sends Telegram alert when renice is applied
- All params configurable in agent.yml and install.sh flags

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

agent/install.sh

@@ -18,13 +18,19 @@ TOKEN=""
 API_URL=""
 INTERVAL=30
 INSTALL_DIR=""
+CPU_THRESHOLD=90
+RENICE_ENABLED=true
+RENICE_CONSECUTIVE=2
 
 for arg in "$@"; do
   case $arg in
-    --token=*)    TOKEN="${arg#*=}" ;;
-    --url=*)      API_URL="${arg#*=}" ;;
-    --interval=*) INTERVAL="${arg#*=}" ;;
-    --dir=*)      INSTALL_DIR="${arg#*=}" ;;
+    --token=*)             TOKEN="${arg#*=}" ;;
+    --url=*)               API_URL="${arg#*=}" ;;
+    --interval=*)          INTERVAL="${arg#*=}" ;;
+    --dir=*)               INSTALL_DIR="${arg#*=}" ;;
+    --cpu-threshold=*)     CPU_THRESHOLD="${arg#*=}" ;;
+    --renice=*)            RENICE_ENABLED="${arg#*=}" ;;
+    --renice-consecutive=*) RENICE_CONSECUTIVE="${arg#*=}" ;;
   esac
 done
 
@@ -113,6 +119,9 @@ api_url: ${API_URL}
 token: ${TOKEN}
 interval: ${INTERVAL}
 debug: false
+cpu_threshold: ${CPU_THRESHOLD}
+renice_enabled: ${RENICE_ENABLED}
+renice_consecutive: ${RENICE_CONSECUTIVE}
 EOF
 ok "Configuración creada en ${INSTALL_DIR}/agent.yml"