The Rust worker is the product: edge/, built and checked in CI

User: Rust is the product (option a). tools/edge-bench-rs moves to edge/
(crate edge; binaries edge-node, the worker, and edge-bench, the replay).
CI's new job edge runs cargo test and edge/check-fixtures.sh: both
RangeIndexers on three committed captures (edge/fixtures, 25k overview
lines each of a.b.models, a.b.ath and a.b.boneless in 5 chunks, 3.5 MB),
compared field by field with check.ts; deploy waits for it. The
TypeScript RangeIndexer stays as check.ts's reference. README: what it
is now; the benchmark findings as history.

Random names: looksRandom missed long tokens of capitals and digits
("51294P1CUKR2R35X", release 74539068, readable and a Newznab title).
12+ capitals and digits switching 6+ times between them are random
(COD4MW2REMASTERED switches 4 times, BEATLES1964REMASTER twice); both
implementations, identical on the fixtures.

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

edge/check-fixtures.sh

@@ -0,0 +1,18 @@
+#!/bin/sh
+# The Rust and TypeScript RangeIndexers on the committed captures (edge/fixtures: 25k
+# overview lines each of a.b.models, a.b.ath and a.b.boneless, in 5 chunks), compared
+# by check.ts field by field: exits non-zero on any difference. CI runs it; run it from
+# the repository root after any change to either side.
+set -eu
+cd "$(dirname "$0")/.."
+cargo build --release --quiet --manifest-path edge/Cargo.toml --bin edge-bench
+out=$(mktemp -d)
+trap 'rm -rf "$out"' EXIT
+status=0
+for capture in edge/fixtures/*/; do
+  name=$(basename "$capture")
+  edge/target/release/edge-bench "$capture" --batch-chunks 2 --idle 2 --dump "$out/$name.jsonl" --wire "$out/$name.wire.jsonl" >/dev/null 2>&1
+  echo "== $name"
+  node --import=@poppinss/ts-exec edge/check.ts "$capture" "$out/$name.jsonl" --wire "$out/$name.wire.jsonl" --batch-chunks 2 --idle 2 || status=1
+done
+exit $status