#2935 Filter/sort extensions by "new" on swamp-club.com/extensions

Problem

The extensions directory at https://swamp-club.com/extensions is hard to use for discovering newly created extensions. The main page surfaces the most recently updated extensions, which means a brand-new extension can be buried under older extensions that just got a routine version bump. There is no way to see what is genuinely new to the ecosystem.

This hurts discoverability for freshly published extensions — exactly the ones a user might want to try out — because "recently updated" conflates "just created" with "existing thing that changed."

Proposed solution

Add a way to browse/filter extensions by newness, distinct from recency of update. Options:

• A sort/filter toggle for "Newest" (first-published date) alongside the existing "Recently updated" view.
• Surface the first-published / created-at date on each extension card so new entries are visually identifiable.
• Optionally a "New" badge for extensions first published within some recent window (e.g. last 30 days).

The exact trigger/threshold for what counts as "new" is open — first-publish timestamp is the most natural signal.

Alternatives considered

• Relying on the current "recently updated" ordering — insufficient, since it mixes new publishes with updates to existing extensions.
• Searching by name — only works if you already know what you are looking for, which defeats the discovery use case.