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>

REBUILD.md

@@ -119,7 +119,7 @@ dropping garbage; 28 TB of compressed overview traffic. Throughput goal:
 2. **Edge worker** (node, TypeScript reusing `lib/`). Measured (`edge:bench`,
    2026-10-09, after two rounds of work): ~200–215 k headers/s per core on
    recent a.b.boneless, ~320–340 k on a 2013 a.b.ath range, ~0.7 GB peak
-   per process. **Rust** (`tools/edge-bench-rs`, the same RangeIndexer path
+   per process. **Rust** (`edge/`, the same RangeIndexer path
    over the same captures; `check.ts` finds every output identical, the
    decoded payloads included): 3.5–3.8× less CPU (boneless 2.9 vs 11.1
    CPU-s per 2 M headers, ath 2.15 vs 7.5) and a third of the memory
@@ -130,7 +130,7 @@ dropping garbage; 28 TB of compressed overview traffic. Throughput goal:
    cost: a second implementation of lib/headers, lib/release, lib/rules and
    the chunk format, kept identical (check.ts) for as long as both exist.
    Findings, how to run both and how to compare their outputs:
-   `tools/edge-bench-rs/README.md`. Since 2026-10-09 the Rust worker
+   `edge/README.md`. Since 2026-10-09 the Rust worker
    (`edge-node`, same crate) is the one running on homelab: ~8× less CPU
    per header and 20× less memory than `edge:node` in production.
    Per lease: compressed chunks of 10–50 k lines, in order →