sausi-7
A lot of these are bite-sized — let users filter by how long a game takes. **Approach** - Add a `playtime` field to each registry entry: `"60s" | "5min" | "session"`. - Add a filter row under the category chips. - Backfill values for the 142 existing games (PR can do a few categories at a time). Open to a 'difficulty' filter at the same time if anyone wants to stack PRs.