diff --git a/scripts/morning_report.sh b/scripts/morning_report.sh
new file mode 100755
index 0000000..da49887
--- /dev/null
+++ b/scripts/morning_report.sh
@@ -0,0 +1,54 @@
+#!/usr/bin/env bash
+# Morning summary for overnight run logs.
+
+set -euo pipefail
+
+LOG_DIR="${LOG_DIR:-data/overnight}"
+
+if [ ! -d "$LOG_DIR" ]; then
+    echo "로그 디렉터리가 없습니다: $LOG_DIR"
+    exit 1
+fi
+
+latest_run="$(ls -1t "$LOG_DIR"/run_*.log 2>/dev/null | head -n 1 || true)"
+latest_watchdog="$(ls -1t "$LOG_DIR"/watchdog_*.log 2>/dev/null | head -n 1 || true)"
+
+if [ -z "$latest_run" ]; then
+    echo "run 로그가 없습니다: $LOG_DIR/run_*.log"
+    exit 1
+fi
+
+echo "Overnight report"
+echo "- run log: $latest_run"
+if [ -n "$latest_watchdog" ]; then
+    echo "- watchdog log: $latest_watchdog"
+fi
+
+start_line="$(head -n 1 "$latest_run" || true)"
+end_line="$(tail -n 1 "$latest_run" || true)"
+
+info_count="$(rg -c '"level": "INFO"' "$latest_run" || true)"
+warn_count="$(rg -c '"level": "WARNING"' "$latest_run" || true)"
+error_count="$(rg -c '"level": "ERROR"' "$latest_run" || true)"
+critical_count="$(rg -c '"level": "CRITICAL"' "$latest_run" || true)"
+traceback_count="$(rg -c 'Traceback' "$latest_run" || true)"
+
+echo "- start: ${start_line:-N/A}"
+echo "- end:   ${end_line:-N/A}"
+echo "- INFO: ${info_count:-0}"
+echo "- WARNING: ${warn_count:-0}"
+echo "- ERROR: ${error_count:-0}"
+echo "- CRITICAL: ${critical_count:-0}"
+echo "- Traceback: ${traceback_count:-0}"
+
+if [ -n "$latest_watchdog" ]; then
+    watchdog_errors="$(rg -c '\[ERROR\]' "$latest_watchdog" || true)"
+    echo "- watchdog ERROR: ${watchdog_errors:-0}"
+    echo ""
+    echo "최근 watchdog 로그:"
+    tail -n 5 "$latest_watchdog" || true
+fi
+
+echo ""
+echo "최근 앱 로그:"
+tail -n 20 "$latest_run" || true
diff --git a/scripts/run_overnight.sh b/scripts/run_overnight.sh
new file mode 100755
index 0000000..c9c5ae9
--- /dev/null
+++ b/scripts/run_overnight.sh
@@ -0,0 +1,87 @@
+#!/usr/bin/env bash
+# Start The Ouroboros overnight with logs and watchdog.
+
+set -euo pipefail
+
+LOG_DIR="${LOG_DIR:-data/overnight}"
+CHECK_INTERVAL="${CHECK_INTERVAL:-30}"
+TMUX_AUTO="${TMUX_AUTO:-true}"
+TMUX_ATTACH="${TMUX_ATTACH:-true}"
+TMUX_SESSION_PREFIX="${TMUX_SESSION_PREFIX:-ouroboros_overnight}"
+
+if [ -z "${APP_CMD:-}" ]; then
+    if [ -x ".venv/bin/python" ]; then
+        PYTHON_BIN=".venv/bin/python"
+    elif command -v python3 >/dev/null 2>&1; then
+        PYTHON_BIN="python3"
+    elif command -v python >/dev/null 2>&1; then
+        PYTHON_BIN="python"
+    else
+        echo ".venv/bin/python 또는 python3/python 실행 파일을 찾을 수 없습니다."
+        exit 1
+    fi
+
+    dashboard_port="${DASHBOARD_PORT:-8080}"
+
+    APP_CMD="DASHBOARD_PORT=$dashboard_port $PYTHON_BIN -m src.main --mode=paper --dashboard"
+fi
+
+mkdir -p "$LOG_DIR"
+
+timestamp="$(date +"%Y%m%d_%H%M%S")"
+RUN_LOG="$LOG_DIR/run_${timestamp}.log"
+WATCHDOG_LOG="$LOG_DIR/watchdog_${timestamp}.log"
+PID_FILE="$LOG_DIR/app.pid"
+WATCHDOG_PID_FILE="$LOG_DIR/watchdog.pid"
+
+if [ -f "$PID_FILE" ]; then
+    old_pid="$(cat "$PID_FILE" || true)"
+    if [ -n "$old_pid" ] && kill -0 "$old_pid" 2>/dev/null; then
+        echo "앱이 이미 실행 중입니다. pid=$old_pid"
+        exit 1
+    fi
+fi
+
+echo "[$(date -u +"%Y-%m-%dT%H:%M:%SZ")] starting: $APP_CMD" | tee -a "$RUN_LOG"
+nohup bash -lc "$APP_CMD" >>"$RUN_LOG" 2>&1 &
+app_pid=$!
+echo "$app_pid" > "$PID_FILE"
+
+echo "[$(date -u +"%Y-%m-%dT%H:%M:%SZ")] app pid=$app_pid" | tee -a "$RUN_LOG"
+
+nohup env PID_FILE="$PID_FILE" LOG_FILE="$WATCHDOG_LOG" CHECK_INTERVAL="$CHECK_INTERVAL" \
+    bash scripts/watchdog.sh >/dev/null 2>&1 &
+watchdog_pid=$!
+echo "$watchdog_pid" > "$WATCHDOG_PID_FILE"
+
+cat <<EOF
+시작 완료
+- app pid: $app_pid
+- watchdog pid: $watchdog_pid
+- app log: $RUN_LOG
+- watchdog log: $WATCHDOG_LOG
+
+실시간 확인:
+tail -f "$RUN_LOG"
+tail -f "$WATCHDOG_LOG"
+EOF
+
+if [ "$TMUX_AUTO" = "true" ]; then
+    if ! command -v tmux >/dev/null 2>&1; then
+        echo "tmux를 찾지 못해 자동 세션 생성은 건너뜁니다."
+        exit 0
+    fi
+
+    session_name="${TMUX_SESSION_PREFIX}_${timestamp}"
+    window_name="overnight"
+    tmux new-session -d -s "$session_name" -n "$window_name" "tail -f '$RUN_LOG'"
+    tmux split-window -t "${session_name}:${window_name}" -v "tail -f '$WATCHDOG_LOG'"
+    tmux select-layout -t "${session_name}:${window_name}" even-vertical
+
+    echo "tmux session 생성: $session_name"
+    echo "수동 접속: tmux attach -t $session_name"
+
+    if [ -z "${TMUX:-}" ] && [ "$TMUX_ATTACH" = "true" ]; then
+        tmux attach -t "$session_name"
+    fi
+fi
diff --git a/scripts/stop_overnight.sh b/scripts/stop_overnight.sh
new file mode 100755
index 0000000..f23851e
--- /dev/null
+++ b/scripts/stop_overnight.sh
@@ -0,0 +1,76 @@
+#!/usr/bin/env bash
+# Stop The Ouroboros overnight app/watchdog/tmux session.
+
+set -euo pipefail
+
+LOG_DIR="${LOG_DIR:-data/overnight}"
+PID_FILE="$LOG_DIR/app.pid"
+WATCHDOG_PID_FILE="$LOG_DIR/watchdog.pid"
+TMUX_SESSION_PREFIX="${TMUX_SESSION_PREFIX:-ouroboros_overnight}"
+KILL_TIMEOUT="${KILL_TIMEOUT:-5}"
+
+stop_pid() {
+    local name="$1"
+    local pid="$2"
+
+    if [ -z "$pid" ]; then
+        echo "$name PID가 비어 있습니다."
+        return 1
+    fi
+
+    if ! kill -0 "$pid" 2>/dev/null; then
+        echo "$name 프로세스가 이미 종료됨 (pid=$pid)"
+        return 0
+    fi
+
+    kill "$pid" 2>/dev/null || true
+    for _ in $(seq 1 "$KILL_TIMEOUT"); do
+        if ! kill -0 "$pid" 2>/dev/null; then
+            echo "$name 종료됨 (pid=$pid)"
+            return 0
+        fi
+        sleep 1
+    done
+
+    kill -9 "$pid" 2>/dev/null || true
+    if ! kill -0 "$pid" 2>/dev/null; then
+        echo "$name 강제 종료됨 (pid=$pid)"
+        return 0
+    fi
+
+    echo "$name 종료 실패 (pid=$pid)"
+    return 1
+}
+
+status=0
+
+if [ -f "$WATCHDOG_PID_FILE" ]; then
+    watchdog_pid="$(cat "$WATCHDOG_PID_FILE" || true)"
+    stop_pid "watchdog" "$watchdog_pid" || status=1
+    rm -f "$WATCHDOG_PID_FILE"
+else
+    echo "watchdog pid 파일 없음: $WATCHDOG_PID_FILE"
+fi
+
+if [ -f "$PID_FILE" ]; then
+    app_pid="$(cat "$PID_FILE" || true)"
+    stop_pid "app" "$app_pid" || status=1
+    rm -f "$PID_FILE"
+else
+    echo "app pid 파일 없음: $PID_FILE"
+fi
+
+if command -v tmux >/dev/null 2>&1; then
+    sessions="$(tmux ls 2>/dev/null | awk -F: -v p="$TMUX_SESSION_PREFIX" '$1 ~ "^" p "_" {print $1}')"
+    if [ -n "$sessions" ]; then
+        while IFS= read -r s; do
+            [ -z "$s" ] && continue
+            tmux kill-session -t "$s" 2>/dev/null || true
+            echo "tmux 세션 종료: $s"
+        done <<< "$sessions"
+    else
+        echo "종료할 tmux 세션 없음 (prefix=${TMUX_SESSION_PREFIX}_)"
+    fi
+fi
+
+exit "$status"
diff --git a/scripts/watchdog.sh b/scripts/watchdog.sh
new file mode 100755
index 0000000..342f3c8
--- /dev/null
+++ b/scripts/watchdog.sh
@@ -0,0 +1,42 @@
+#!/usr/bin/env bash
+# Simple watchdog for The Ouroboros process.
+
+set -euo pipefail
+
+PID_FILE="${PID_FILE:-data/overnight/app.pid}"
+LOG_FILE="${LOG_FILE:-data/overnight/watchdog.log}"
+CHECK_INTERVAL="${CHECK_INTERVAL:-30}"
+STATUS_EVERY="${STATUS_EVERY:-10}"
+
+mkdir -p "$(dirname "$LOG_FILE")"
+
+log() {
+    printf '%s %s\n' "$(date -u +"%Y-%m-%dT%H:%M:%SZ")" "$1" | tee -a "$LOG_FILE"
+}
+
+if [ ! -f "$PID_FILE" ]; then
+    log "[ERROR] pid file not found: $PID_FILE"
+    exit 1
+fi
+
+PID="$(cat "$PID_FILE")"
+if [ -z "$PID" ]; then
+    log "[ERROR] pid file is empty: $PID_FILE"
+    exit 1
+fi
+
+log "[INFO] watchdog started (pid=$PID, interval=${CHECK_INTERVAL}s)"
+
+count=0
+while true; do
+    if kill -0 "$PID" 2>/dev/null; then
+        count=$((count + 1))
+        if [ $((count % STATUS_EVERY)) -eq 0 ]; then
+            log "[INFO] process alive (pid=$PID)"
+        fi
+    else
+        log "[ERROR] process stopped (pid=$PID)"
+        exit 1
+    fi
+    sleep "$CHECK_INTERVAL"
+done