fix(githooks): write log timestamps in local time (was UTC + Z)

.githooks/post-receive

@@ -32,7 +32,7 @@ echo "=== REPO_TOPLEVEL=$REPO_TOPLEVEL (GIT_DIR=$GIT_DIR) ===" >&2
 #        的 build 用上新代码。
 # ============================================================
 sync_worktree() {
-    echo "=== sync_worktree: git reset --hard HEAD @ $(date -u +%Y-%m-%dT%H:%M:%SZ) ==="
+    echo "=== sync_worktree: git reset --hard HEAD @ $(date +%Y-%m-%dT%H:%M:%S%z) ==="
     git reset --hard HEAD
 }
 
@@ -49,7 +49,7 @@ init_log_file() {
 # ============================================================
 write_metadata_header() {
     {
-        echo "=== post-receive @ $(date -u +%Y-%m-%dT%H:%M:%SZ) ==="
+        echo "=== post-receive @ $(date +%Y-%m-%dT%H:%M:%S%z) ==="
         echo "branch:  $(git rev-parse --abbrev-ref HEAD)"
         echo "commit:  $(git rev-parse --short HEAD)"
         echo "cwd:     $(pwd)"
@@ -90,10 +90,10 @@ copy_env_by_branch() {
 #   返回：build 退出码（main 用 if ! run_build 决定是否继续）
 # ============================================================
 run_build() {
-    echo "=== build START @ $(date -u +%Y-%m-%dT%H:%M:%SZ) ===" >> "$LOG_FILE"
+    echo "=== build START @ $(date +%Y-%m-%dT%H:%M:%S%z) ===" >> "$LOG_FILE"
     pnpm run build > /dev/null 2>&1
     BUILD_EXIT=$?
-    echo "=== build EXIT_CODE=$BUILD_EXIT @ $(date -u +%Y-%m-%dT%H:%M:%SZ) ===" >> "$LOG_FILE"
+    echo "=== build EXIT_CODE=$BUILD_EXIT @ $(date +%Y-%m-%dT%H:%M:%S%z) ===" >> "$LOG_FILE"
     echo "" >> "$LOG_FILE"
     return $BUILD_EXIT
 }
@@ -106,14 +106,14 @@ run_build() {
 #   4) 等 1s
 # ============================================================
 stop_existing_next() {
-    echo "=== stop existing next @ $(date -u +%Y-%m-%dT%H:%M:%SZ) ===" >> "$LOG_FILE"
+    echo "=== stop existing next @ $(date +%Y-%m-%dT%H:%M:%S%z) ===" >> "$LOG_FILE"
     pkill -f "next start" 2>/dev/null
     pkill -f "next-server" 2>/dev/null
     sleep 2
     pkill -9 -f "next start" 2>/dev/null
     pkill -9 -f "next-server" 2>/dev/null
     sleep 1
-    echo "=== stop DONE @ $(date -u +%Y-%m-%dT%H:%M:%SZ) ===" >> "$LOG_FILE"
+    echo "=== stop DONE @ $(date +%Y-%m-%dT%H:%M:%S%z) ===" >> "$LOG_FILE"
     echo "" >> "$LOG_FILE"
 }
 
@@ -123,17 +123,17 @@ stop_existing_next() {
 launch_next() {
     # next stdout/stderr 接到 logs/next-server.log（覆盖模式，每次 deploy 重新开始）
     NEXT_LOG_FILE="$REPO_TOPLEVEL/logs/next-server.log"
-    echo "=== start LAUNCH @ $(date -u +%Y-%m-%dT%H:%M:%SZ) ===" >> "$LOG_FILE"
+    echo "=== start LAUNCH @ $(date +%Y-%m-%dT%H:%M:%S%z) ===" >> "$LOG_FILE"
     nohup pnpm run start > "$NEXT_LOG_FILE" 2>&1 &
     START_PID=$!
-    echo "=== start PID=$START_PID @ $(date -u +%Y-%m-%dT%H:%M:%SZ) ===" >> "$LOG_FILE"
+    echo "=== start PID=$START_PID @ $(date +%Y-%m-%dT%H:%M:%S%z) ===" >> "$LOG_FILE"
 }
 
 # ============================================================
 # 7. log_abort —— build 失败时写结束标记（不输出 START LAUNCH）
 # ============================================================
 log_abort() {
-    echo "=== ABORTED @ $(date -u +%Y-%m-%dT%H:%M:%SZ) (build failed, start skipped) ===" >> "$LOG_FILE"
+    echo "=== ABORTED @ $(date +%Y-%m-%dT%H:%M:%S%z) (build failed, start skipped) ===" >> "$LOG_FILE"
 }
 
 # ============================================================