feat: publish the corrected platform files

export_native now writes into exports/ by default, and beside each
platform's corrected file a report naming every change, where the run
printed five per kind. A new site page lists each platform with its
original file, a download of the corrected one and every corrected,
filled or withheld value. Each platform page links to its row.

scripts/generate_site.py

@@ -64,6 +64,7 @@ from generate_readme import (
     release_totals,
 )
 from provenance_report import build_report, distinct_missing
+from siteexports import generate_exports_page, load_export_reports
 import release_record
 
 DOCS_DIR = "docs"
@@ -1250,6 +1251,7 @@ def _page_description(markdown: str, relative: Path, title: str) -> str:
         "data.md": "Versioned RetroBIOS JSON API, CSV exports, SQLite snapshot, schemas, checksums and data interpretation guidance.",
         "cross-reference.md": "Cross-reference from retrogaming platforms to emulator cores, systems, upstream projects and profiled firmware files.",
         "gaps.md": "Current RetroBIOS verification gaps, platform-to-emulator divergences, missing files and documented source limitations.",
+        "exports.md": "Each platform's own BIOS list (System.dat, batocera-systems, es_bios.xml and the rest) rewritten with the hashes and files the emulator source code proves.",
         "provenance.md": "Hash-based comparison of RetroBIOS metadata with No-Intro, Redump and TOSEC catalog snapshots.",
         "which-pack.md": "One-line automatic RetroBIOS installation and platform-specific pack destinations, with verification and release caveats.",
     }
@@ -1800,6 +1802,10 @@ def _render_platform_systems(
     return lines
 
 
+# Platforms with a corrected file published by export_native.py.
+_EXPORTED: set[str] = set()
+
+
 def generate_platform_page(
     name: str,
     cov: dict,
@@ -1891,6 +1897,8 @@ def generate_platform_page(
         )
         note = " (a branch: the revision read is not recorded)" if moving else ""
         lines.append(f"| Transcribed from | <{transcribed}>{note} |")
+    if name in _EXPORTED:
+        lines.append(f"| Corrected file | [Download it and see what changed](../exports.md#{name}) |")
     contrib_list = (registry or {}).get(name, {}).get("contributed_by", [])
     if contrib_list:
         for cb in contrib_list:
@@ -4639,6 +4647,7 @@ def generate_mkdocs_nav(
         {"Cross-reference": "cross-reference.md"},
         {"Gap analysis": "gaps.md"},
         {"Dump provenance": "provenance.md"},
+        {"Corrected platform files": "exports.md"},
         {"Data & API": "data.md"},
         {"Wiki": wiki_nav},
         {"Contributing": "contributing.md"},
@@ -4791,6 +4800,9 @@ def _generate(args: argparse.Namespace) -> None:
     _build_system_page_map_from_data(manufacturers, coverages, db, profiles)
     print(f"  {len(_system_page_map)} system IDs mapped to pages")
 
+    export_reports = load_export_reports()
+    _EXPORTED.update(report["platform"] for report in export_reports)
+
     print("Generating platform pages...")
     write_if_changed(
         str(docs / "platforms" / "index.md"),
@@ -4876,6 +4888,15 @@ def _generate(args: argparse.Namespace) -> None:
         ),
     )
 
+    print("Generating corrected platform files page...")
+    write_if_changed(
+        str(docs / "exports.md"),
+        generate_exports_page(
+            export_reports,
+            {name: cov["platform"] for name, cov in coverages.items()},
+        ),
+    )
+
     print("Generating dump provenance page...")
     provenance_report = build_report(db, load_provenance_snapshots())
     write_if_changed(