feat: add 'all' mode to run all loops sequentially in one cron job

- run-loop.sh all: runs upstream-sync -> dependency-upgrade -> ci-fix
  -> issue-triage -> pr-review sequentially with 10s pause between
- install-cron.sh: simplified to single cron entry at 01:00
- One loop failure does not block subsequent loops

Author: imroc

.codebuddy/scripts/install-cron.sh

@@ -1,15 +1,8 @@
 #!/usr/bin/env bash
 #
-# Install cron jobs for Loop Engineering
-# All loops run once daily during nighttime (Beijing time, UTC+8),
-# staggered to avoid API rate limits.
-#
-# Schedule (Beijing time):
-#   01:00  upstream-sync     (check upstream changes first)
-#   02:00  dependency-upgrade
-#   03:00  ci-fix            (fix any CI failures)
-#   04:00  issue-triage      (triage new issues)
-#   05:00  pr-review         (review open PRs)
+# Install cron job for Loop Engineering
+# Runs all 5 loops sequentially once daily at 01:00 (Beijing time, UTC+8).
+# Loops run in order: upstream-sync -> dependency-upgrade -> ci-fix -> issue-triage -> pr-review
 #
 # Usage: ./install-cron.sh
 # To uninstall: ./install-cron.sh --remove
@@ -51,24 +44,16 @@ fi
 
 remove_existing
 
-# Add new cron jobs (Beijing time = UTC+8)
+# Add cron job — runs all loops sequentially at 01:00 Beijing time
 # Cron uses system local timezone — ensure server is in CST/Asia-Shanghai
 (
   crontab -l 2>/dev/null || true
   echo "$MARKER"
-  echo "0 1 * * * ${RUN_SCRIPT} upstream-sync $MARKER"
-  echo "0 2 * * * ${RUN_SCRIPT} dependency-upgrade $MARKER"
-  echo "0 3 * * * ${RUN_SCRIPT} ci-fix $MARKER"
-  echo "0 4 * * * ${RUN_SCRIPT} issue-triage $MARKER"
-  echo "0 5 * * * ${RUN_SCRIPT} pr-review $MARKER"
+  echo "0 1 * * * ${RUN_SCRIPT} all $MARKER"
 ) | crontab -
 
-echo "Installed 5 loop cron jobs (daily, Beijing time):"
-echo "  01:00  upstream-sync"
-echo "  02:00  dependency-upgrade"
-echo "  03:00  ci-fix"
-echo "  04:00  issue-triage"
-echo "  05:00  pr-review"
+echo "Installed loop cron job (daily, Beijing time):"
+echo "  01:00  all (upstream-sync -> dependency-upgrade -> ci-fix -> issue-triage -> pr-review)"
 echo ""
 echo "Logs: \$LOOP_LOG_DIR (default: /tmp/loop-logs/)"
 echo "Uninstall: ${SCRIPT_DIR}/install-cron.sh --remove"

.codebuddy/scripts/run-loop.sh

@@ -5,18 +5,37 @@
 # reads STATE.md for context, executes the loop, writes back STATE.md.
 #
 # Usage: ./run-loop.sh <loop_type>
-#   loop_type: ci-fix | issue-triage | pr-review | dependency-upgrade | upstream-sync
+#   loop_type: ci-fix | issue-triage | pr-review | dependency-upgrade | upstream-sync | all
+#
+# When "all" is specified, runs all 5 loops sequentially:
+#   upstream-sync -> dependency-upgrade -> ci-fix -> issue-triage -> pr-review
+#
+# Crontab example (Beijing time, UTC+8):
+#   0 1 * * * <repo-root>/.codebuddy/scripts/run-loop.sh all
 
 set -euo pipefail
 
-LOOP_TYPE="${1:?Usage: run-loop.sh <ci-fix|issue-triage|pr-review|dependency-upgrade|upstream-sync>}"
+LOOP_TYPE="${1:?Usage: run-loop.sh <ci-fix|issue-triage|pr-review|dependency-upgrade|upstream-sync|all>}"
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 REPO_DIR="$(cd "$SCRIPT_DIR/../.." && pwd)"
 LOG_DIR="${LOOP_LOG_DIR:-/tmp/loop-logs}"
 mkdir -p "$LOG_DIR"
 
 cd "$REPO_DIR"
 
+# "all" mode: run all loops sequentially
+if [[ "$LOOP_TYPE" == "all" ]]; then
+  echo "=== Running all loops sequentially at $(date) ==="
+  for lt in upstream-sync dependency-upgrade ci-fix issue-triage pr-review; do
+    echo "--- Starting: $lt ---"
+    "$0" "$lt" || echo "WARNING: $lt exited with error, continuing..."
+    echo "--- Finished: $lt ---"
+    sleep 10  # brief pause between loops to avoid API rate limits
+  done
+  echo "=== All loops completed at $(date) ==="
+  exit 0
+fi
+
 TIMESTAMP=$(date +%Y%m%d-%H%M%S)
 LOG_FILE="$LOG_DIR/${LOOP_TYPE}-${TIMESTAMP}.log"
 
@@ -41,7 +60,7 @@ case "$LOOP_TYPE" in
     ;;
   *)
     echo "Unknown loop type: $LOOP_TYPE" | tee -a "$LOG_FILE"
-    echo "Valid types: ci-fix, issue-triage, pr-review, dependency-upgrade, upstream-sync"
+    echo "Valid types: ci-fix, issue-triage, pr-review, dependency-upgrade, upstream-sync, all"
     exit 1
     ;;
 esac