Automate Browser Cache Clearing

I run the c.party site and stale assets are becoming a headache. I need the current browser cache wiped clean and, more importantly, an automated way to force fresh files any time I push an update. That means setting the right cache-control headers, adding versioning where sensible, and giving me a simple repeatable method (script, task runner step, or server-side tweak) that keeps visitors from seeing outdated content.

Key acceptance criteria:
• Existing browser cache for all visitors is effectively invalidated the moment the solution is deployed.
• Future releases trigger automatic cache clearing with no manual steps on my side.
• Solution works across mainstream browsers and requires no plug-ins for the end user.
• Clear, concise documentation showing what you changed and how I can verify it.