edge-bench-rs: libdeflate for chunks, memchr for lines and tabs

libdeflate inflates a chunk whole, in half the time of zlib-rs (1.09 ->
0.51 s per boneless range); memchr finds line ends and tabs with SIMD.
The per-article timers are gone. Boneless 2026 ~700k headers/s, ath 2013
~920k; all three captures still identical to the TypeScript.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tools/edge-bench-rs/Cargo.toml

@@ -8,7 +8,9 @@ description = "The edge worker's indexing (lib/edge RangeIndexer) in Rust, to co
 base64 = "0.22"
 chrono = "0.4"
 flate2 = { version = "1", default-features = false, features = ["zlib-rs"] }
+libdeflater = "1.26.1"
 md-5 = "0.10"
+memchr = "2.8.3"
 mimalloc = "0.1.52"
 regex = "1"
 rustc-hash = "2"