Add AppHelpHint tooltips to ScrapeSafetyBadge and ScrapeSafetyBanner
showing rate-limit explanation, cooldown reason, and recommended action.
When no cooldown is active, show a simple "ready" message.
Fix settings tabs not loading on initial navigation by deferring
onMounted load via nextTick, and using flush:'post' on the section
watcher so template refs are attached before load() runs.
