Packet README: what the corpus is for and where each part is (#240)

L.tar.gz

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:175609b05686567fe88d1649c27383ff2a2c5fa53ea8240cdabce591f896b83c
-size 3387580895
+oid sha256:52561ebccb07b43fc356954265160068347be3f9b5c181aef749f4909e223727
+size 3387582092

README.md

@@ -34,7 +34,7 @@ webclients).
 |---|---|---|---|
 | `L.tar.gz` | 26,527 | 7.08 GB → 3.39 GB | `408c642beaddee16ddb871209793a4368a5c68ecb7013d187847852b926cde4e` |
 
-`L.tar.gz` sha256: `175609b05686567fe88d1649c27383ff2a2c5fa53ea8240cdabce591f896b83c`
+`L.tar.gz` sha256: `52561ebccb07b43fc356954265160068347be3f9b5c181aef749f4909e223727`
 
 ## What is inside
 
@@ -52,10 +52,7 @@ webclients).
   `repos/<id>/execution.json` gives the revision, the image, the install and test commands
   and the test result recorded when the corpus was built (all 40 passed).
 - `dependencies/`: npm and Go package caches for the JavaScript, TypeScript and Go
-  projects, so their tests run with no network: one archive per cache, named by its
-  sha256; `dependencies/catalog.json` maps each repository to its archives. Python
-  projects install from PyPI.
-- `repos/<id>/repository.json`: the repository's source, license and refs.
+  projects, so their tests run with no network. Python projects install from PyPI.
 - `images/`: `go-common` (Go 1.24.13 with common tools) and `node-common` (Node 22.23.2
   with tsc, tsx, eslint, prettier, mocha and vitest) as OCI archives
   (`podman load -i images/<id>.oci.tar`), and `catalog.json`, which also lists the 14