chore: refresh database, manifests and readme

The database drops the duplicate PS3UPDAT.PUP entry and regains
adler32 on every file. RetroPie gains an install manifest, so the
download table reports its size instead of a dash.

install/rocknix.json

@@ -5,7 +5,7 @@
   "platform": "rocknix",
   "display_name": "ROCKNIX",
   "version": "1.0",
-  "generated": "2026-08-10T08:12:15Z",
+  "generated": "2026-08-10T23:10:26Z",
   "base_destination": "bios",
   "detect": [
     {
@@ -2002,7 +2002,7 @@
       ]
     },
     {
-      "dest": "cannonball/epr-10381a.132",
+      "dest": "cannonball/epr-10381b.132",
       "sha1": "bf3ff05bbf81bdd44567f3b9bb4919ed4a499624",
       "sha256": "bfa129294604597f7c5145f7f0fe9bb0fe5d38fafc3a8f20b15b95f4649e7e45",
       "size": 65536,