diff --git a/README.md b/README.md
index 27771518..38d7e47b 100644
--- a/README.md
+++ b/README.md
@@ -62,13 +62,13 @@ Full list with per-file details: **[https://abdess.github.io/retrobios/](https:/
 | Batocera | 361/362 (99.7%) | 354 | 7 | 1 |
 | BizHawk | 118/118 (100.0%) | 118 | 0 | 0 |
 | EmuDeck | 161/161 (100.0%) | 161 | 0 | 0 |
-| Lakka | 443/448 (98.9%) | 443 | 0 | 5 |
-| Recalbox | 277/346 (80.1%) | 274 | 3 | 69 |
-| RetroArch | 443/448 (98.9%) | 443 | 0 | 5 |
+| Lakka | 448/448 (100.0%) | 448 | 0 | 0 |
+| Recalbox | 346/346 (100.0%) | 343 | 3 | 0 |
+| RetroArch | 448/448 (100.0%) | 448 | 0 | 0 |
 | RetroBat | 339/339 (100.0%) | 335 | 4 | 0 |
-| RetroDECK | 1960/2006 (97.7%) | 1934 | 26 | 46 |
-| RetroPie | 443/448 (98.9%) | 443 | 0 | 5 |
-| RomM | 372/374 (99.5%) | 372 | 0 | 2 |
+| RetroDECK | 2006/2006 (100.0%) | 1980 | 26 | 0 |
+| RetroPie | 448/448 (100.0%) | 448 | 0 | 0 |
+| RomM | 374/374 (100.0%) | 374 | 0 | 0 |
 
 ## Build your own pack
 
@@ -130,4 +130,4 @@ See [CONTRIBUTING.md](CONTRIBUTING.md) for guidelines.
 
 This repository provides BIOS files for personal backup and archival purposes.
 
-*Auto-generated on 2026-03-30T23:36:52Z*
+*Auto-generated on 2026-03-31T11:57:27Z*
diff --git a/scripts/generate_readme.py b/scripts/generate_readme.py
index 87aa61a9..490a327d 100644
--- a/scripts/generate_readme.py
+++ b/scripts/generate_readme.py
@@ -21,9 +21,12 @@ sys.path.insert(0, os.path.dirname(__file__))
 from common import list_registered_platforms, load_database, load_platform_config, write_if_changed
 from verify import verify_platform
 
-def compute_coverage(platform_name: str, platforms_dir: str, db: dict) -> dict:
+def compute_coverage(platform_name: str, platforms_dir: str, db: dict,
+                     data_registry: dict | None = None,
+                     supplemental_names: set[str] | None = None) -> dict:
     config = load_platform_config(platform_name, platforms_dir)
-    result = verify_platform(config, db)
+    result = verify_platform(config, db, data_dir_registry=data_registry,
+                             supplemental_names=supplemental_names)
     sc = result.get("status_counts", {})
     ok = sc.get("ok", 0)
     untested = sc.get("untested", 0)
@@ -82,10 +85,16 @@ def generate_readme(db: dict, platforms_dir: str) -> str:
 
     platform_names = list_registered_platforms(platforms_dir, include_archived=True)
 
+    from common import load_data_dir_registry
+    from cross_reference import _build_supplemental_index
+    data_registry = load_data_dir_registry(platforms_dir)
+    suppl_names = _build_supplemental_index()
+
     coverages = {}
     for name in platform_names:
         try:
-            coverages[name] = compute_coverage(name, platforms_dir, db)
+            coverages[name] = compute_coverage(name, platforms_dir, db,
+                                               data_registry, suppl_names)
         except FileNotFoundError:
             pass
 
diff --git a/scripts/generate_site.py b/scripts/generate_site.py
index 0c7f0b09..4d369eb4 100644
--- a/scripts/generate_site.py
+++ b/scripts/generate_site.py
@@ -2054,11 +2054,17 @@ def main():
 
     platform_names = list_registered_platforms(args.platforms_dir, include_archived=True)
 
+    from common import load_data_dir_registry
+    from cross_reference import _build_supplemental_index
+    data_registry = load_data_dir_registry(args.platforms_dir)
+    suppl_names = _build_supplemental_index()
+
     print("Computing platform coverage...")
     coverages = {}
     for name in sorted(platform_names):
         try:
-            cov = compute_coverage(name, args.platforms_dir, db)
+            cov = compute_coverage(name, args.platforms_dir, db,
+                                   data_registry, suppl_names)
             coverages[name] = cov
             print(f"  {cov['platform']}: {cov['present']}/{cov['total']} ({_pct(cov['present'], cov['total'])})")
         except FileNotFoundError as e: