release 1.13.3: sticky generated time in Europe/Zurich (CEST)

Display wall-clock like local `date` (CEST/CET), not UTC …Z. ISO datetime
keeps +02:00 offset so the live age counter stays correct.

host-agent/run-host-report.sh

@@ -293,8 +293,14 @@ write_bootstrap_html() {
   local curl="${COMMIT_URL:-}"
   local clink="$cshort"
   local gen iso
-  gen=$(date -u +"%Y-%m-%d %H:%M:%SZ" 2>/dev/null || date)
-  iso=$(date -u +"%Y-%m-%dT%H:%M:%SZ" 2>/dev/null || date -Iseconds)
+  # Local wall clock (CEST/CET · MESZ/MEZ on CH/DE hosts), not UTC Z
+  if TZ=Europe/Zurich date +"%Y-%m-%d %H:%M:%S %Z" >/dev/null 2>&1; then
+    gen=$(TZ=Europe/Zurich date +"%Y-%m-%d %H:%M:%S %Z")
+    iso=$(TZ=Europe/Zurich date +"%Y-%m-%dT%H:%M:%S%z" | sed 's/\([+-][0-9][0-9]\)\([0-9][0-9]\)$/\1:\2/')
+  else
+    gen=$(date +"%Y-%m-%d %H:%M:%S %Z" 2>/dev/null || date)
+    iso=$(date -Iseconds 2>/dev/null || date)
+  fi
   if [ -n "$curl" ]; then
     clink="<a href=\"$(printf '%s' "$curl" | sed 's/&/\&amp;/g')\">$cshort</a>"
   fi