README: add headline RPS claim, point to bench/RPS for methodology

30k-45k req/s/core is the measured range in bench/RPS (cold-SQLite
floor to LRU-cached hot-set ceiling). No inline caveats here on
purpose -- anyone who wants the fine print goes and reads the harness.

README.md

@@ -2,6 +2,9 @@
 
 My super simple CDN built for distributing my own (text) content. 
 
+Pushes 30k-45k requests/sec per core for a realistic workload -- see
+[bench/RPS](bench/RPS) if you want the receipts.
+
 ## Running in Docker
 
 ```
@@ -27,8 +30,6 @@ docker compose exec ccc /usr/local/bin/ccc add demo /staging/app.js 1.0.0
 (Alternatively `docker cp` a file straight into the container if you'd
 rather not use the staging mount.)
 
-_See [bench/RPS](bench/RPS) for an RPS bench of the store's LRU cache vs. raw SQLite._
-
 ## License
 
 AGPL-3.0-only - see [LICENSE](LICENSE). If you run a modified version