chore: regenerate readme, database and manifests

After the second bring-to-head pass: 40 bumps, ten profiles by hand,
five off-forge apps, the G-NET BIOS sets and the new hiscore.dat.
Manifests generated twice, identical.

install/retrodeck.json

@@ -6,7 +6,7 @@
   "platform": "retrodeck",
   "display_name": "RetroDECK",
   "version": "1.0",
-  "generated": "2026-10-24T00:06:47Z",
+  "generated": "2026-10-24T02:09:46Z",
   "base_destination": "",
   "detect": [
     {
@@ -12752,6 +12752,7 @@
           "repo_path": "bios/Arcade/MAME/coh1002t.zip",
           "cores": [
             "mame",
+            "mame2003_plus",
             "mamearcade"
           ]
         }
@@ -12818,6 +12819,7 @@
           "repo_path": "bios/Arcade/Arcade/.variants/coh3002t.zip.db439f9b",
           "cores": [
             "mame",
+            "mame2003_plus",
             "mamearcade"
           ]
         }