fix: use $HOME instead of hardcoded /root in scripts

Replace all hardcoded /root paths with $HOME so scripts are portable
across different environments and don't leak local path info.

Author: imroc

.codebuddy/scripts/install-cron.sh

@@ -3,7 +3,7 @@
 # Install cron job for Loop Engineering
 # Runs all 5 loops sequentially once daily at 01:00 (Beijing time, UTC+8).
 #
-# The crontab is written to a persistent path (/root/.local/share/loop-crontab)
+# The crontab is written to a persistent path ($HOME/.local/share/loop-crontab)
 # so it survives container restarts. rc.local loads it on boot.
 #
 # Usage: ./install-cron.sh
@@ -14,7 +14,7 @@ set -euo pipefail
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 RUN_SCRIPT="${SCRIPT_DIR}/run-loop.sh"
 MARKER="# loop-engineering-req"
-PERSIST_DIR="/root/.local/share"
+PERSIST_DIR="${HOME}/.local/share"
 PERSIST_FILE="${PERSIST_DIR}/loop-crontab"
 
 # Remove existing loop cron jobs from current crontab

.codebuddy/scripts/run-loop.sh

@@ -16,12 +16,12 @@
 set -euo pipefail
 
 # cron has a minimal PATH — set full PATH so codebuddy, gh, go, etc. are found
-export PATH="/root/.linuxbrew/bin:/root/.linuxbrew/sbin:/home/linuxbrew/.linuxbrew/bin:/home/linuxbrew/.linuxbrew/sbin:/root/.bin:/root/.local/bin:/root/.cargo/bin:/root/go/bin:/root/.krew/bin:/root/.fzf/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
-
-# Also load NVM, Cargo, Go env if available
 export HOME="${HOME:-/root}"
-export GOPATH="${GOPATH:-/root/go}"
-[ -f /root/.cargo/env ] && . /root/.cargo/env 2>/dev/null || true
+export PATH="${HOME}/.linuxbrew/bin:${HOME}/.linuxbrew/sbin:/home/linuxbrew/.linuxbrew/bin:/home/linuxbrew/.linuxbrew/sbin:${HOME}/.bin:${HOME}/.local/bin:${HOME}/.cargo/bin:${HOME}/go/bin:${HOME}/.krew/bin:${HOME}/.fzf/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
+
+# Also load Cargo, Go env if available
+export GOPATH="${GOPATH:-${HOME}/go}"
+[ -f "${HOME}/.cargo/env" ] && . "${HOME}/.cargo/env" 2>/dev/null || true
 
 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)"

.codebuddy/scripts/start-loops.sh

@@ -8,7 +8,7 @@
 set -euo pipefail
 
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
-PERSIST_FILE="/root/.local/share/loop-crontab"
+PERSIST_FILE="${HOME}/.local/share/loop-crontab"
 
 # 1. Ensure cron daemon is running
 if ! pgrep -x cron >/dev/null 2>&1; then