feat: complete retroarch.yml conformance with libretro docs

scraper adds FBNeo subsystem BIOS (channelf, coleco, neocdz, ngp,
spectrum, spec128, spec1282a, fdsbios, aes), DSi files, SGB alt
names, JollyCV BIOS, Saturn ST-V, PSX alt BIOS. all traced to
original emulator source code. 0 missing across all platforms.
retroarch pack: 398 -> 445 files.

database.json

@@ -1,5 +1,5 @@
 {
-  "generated_at": "2026-03-18T13:29:00Z",
+  "generated_at": "2026-03-18T13:46:32Z",
   "total_files": 5563,
   "total_size": 4908008969,
   "files": {

platforms/retroarch.yml

@@ -220,6 +220,33 @@ systems:
     - name: qsound.zip
       destination: qsound.zip
       required: true
+    - name: channelf.zip
+      destination: channelf.zip
+      required: true
+    - name: coleco.zip
+      destination: coleco.zip
+      required: true
+    - name: neocdz.zip
+      destination: neocdz.zip
+      required: true
+    - name: ngp.zip
+      destination: ngp.zip
+      required: true
+    - name: spectrum.zip
+      destination: spectrum.zip
+      required: true
+    - name: spec128.zip
+      destination: spec128.zip
+      required: true
+    - name: spec1282a.zip
+      destination: spec1282a.zip
+      required: true
+    - name: fdsbios.zip
+      destination: fdsbios.zip
+      required: true
+    - name: aes.zip
+      destination: aes.zip
+      required: true
     core: fbneo
     manufacturer: Various
     docs: https://docs.libretro.com/library/fbneo/
@@ -331,6 +358,12 @@ systems:
       md5: 2c66f5911e5b42b8ebe113403548eee7
       crc32: 3aa93ef3
       size: 8192
+    - name: BIOS.col
+      destination: BIOS.col
+      required: true
+    - name: bioscv.rom
+      destination: bioscv.rom
+      required: true
   commodore-amiga:
     files:
     - name: kick33180.A500
@@ -1237,6 +1270,18 @@ systems:
       md5: e45033d9b0fa6b0de071292bba7c9d13
       crc32: 945f9dc9
       size: 262144
+    - name: dsi_bios7.bin
+      destination: dsi_bios7.bin
+      required: true
+    - name: dsi_bios9.bin
+      destination: dsi_bios9.bin
+      required: true
+    - name: dsi_firmware.bin
+      destination: dsi_firmware.bin
+      required: true
+    - name: dsi_nand.bin
+      destination: dsi_nand.bin
+      required: true
     core: desmume
     manufacturer: Nintendo
     docs: https://docs.libretro.com/library/desmume/
@@ -1351,6 +1396,9 @@ systems:
       md5: d574d4f9c12f305074798f54c091a8b4
       crc32: ec8a83b9
       size: 256
+    - name: sgb.boot.rom
+      destination: sgb.boot.rom
+      required: false
   nintendo-snes:
     files:
     - name: cx4.data.rom
@@ -1766,6 +1814,9 @@ systems:
       md5: ac4e4b6522e200c0d23d371a8cecbfd3
       crc32: e4d61811
       size: 524288
+    - name: stvbios.zip
+      destination: kronos/stvbios.zip
+      required: true
     core: kronos
     manufacturer: Sega
     docs: https://docs.libretro.com/library/kronos/

scripts/scraper/libretro_scraper.py

@@ -268,12 +268,25 @@ class Scraper(BaseScraper):
         # Arcade BIOS present in the repo but absent from System.dat.
         # FBNeo expects them in system/ or system/fbneo/.
         # ref: fbneo/src/burner/libretro/libretro.cpp
+        # ref: fbneo/src/burner/libretro/libretro.cpp — search order:
+        # 1) romset dir 2) system/fbneo/ 3) system/
         EXTRA_ARCADE_FILES = [
             {"name": "namcoc69.zip", "destination": "namcoc69.zip", "required": True},
             {"name": "namcoc70.zip", "destination": "namcoc70.zip", "required": True},
             {"name": "namcoc75.zip", "destination": "namcoc75.zip", "required": True},
             {"name": "msx.zip", "destination": "msx.zip", "required": True},
             {"name": "qsound.zip", "destination": "qsound.zip", "required": True},
+            # FBNeo non-arcade subsystem BIOS (MAME-format ZIPs)
+            # ref: fbneo/src/burn/drv/ per-driver source files
+            {"name": "channelf.zip", "destination": "channelf.zip", "required": True},
+            {"name": "coleco.zip", "destination": "coleco.zip", "required": True},
+            {"name": "neocdz.zip", "destination": "neocdz.zip", "required": True},
+            {"name": "ngp.zip", "destination": "ngp.zip", "required": True},
+            {"name": "spectrum.zip", "destination": "spectrum.zip", "required": True},
+            {"name": "spec128.zip", "destination": "spec128.zip", "required": True},
+            {"name": "spec1282a.zip", "destination": "spec1282a.zip", "required": True},
+            {"name": "fdsbios.zip", "destination": "fdsbios.zip", "required": True},
+            {"name": "aes.zip", "destination": "aes.zip", "required": True},
         ]
         if "arcade" in systems:
             existing = {f["name"] for f in systems["arcade"].get("files", [])}
@@ -291,6 +304,42 @@ class Scraper(BaseScraper):
                     "required": True,
                 })
 
+        # Extra files missing from System.dat for specific systems.
+        # Each traced to the core's source code.
+        EXTRA_SYSTEM_FILES = {
+            # melonDS DS DSi mode — ref: JesseTG/melonds-ds/src/libretro.cpp
+            "nintendo-ds": [
+                {"name": "dsi_bios7.bin", "destination": "dsi_bios7.bin", "required": True},
+                {"name": "dsi_bios9.bin", "destination": "dsi_bios9.bin", "required": True},
+                {"name": "dsi_firmware.bin", "destination": "dsi_firmware.bin", "required": True},
+                {"name": "dsi_nand.bin", "destination": "dsi_nand.bin", "required": True},
+            ],
+            # bsnes SGB naming — ref: bsnes/target-libretro/libretro.cpp
+            "nintendo-sgb": [
+                {"name": "sgb.boot.rom", "destination": "sgb.boot.rom", "required": False},
+            ],
+            # JollyCV — ref: jollycv/libretro.c
+            "coleco-colecovision": [
+                {"name": "BIOS.col", "destination": "BIOS.col", "required": True},
+                {"name": "bioscv.rom", "destination": "bioscv.rom", "required": True},
+            ],
+            # Kronos ST-V — ref: libretro-kronos/libretro/libretro.c
+            "sega-saturn": [
+                {"name": "stvbios.zip", "destination": "kronos/stvbios.zip", "required": True},
+            ],
+            # PCSX ReARMed / Beetle PSX alt BIOS — ref: pcsx_rearmed/libpcsxcore/misc.c
+            # docs say PSXONPSP660.bin (uppercase) but core accepts any case
+            "sony-playstation": [
+                {"name": "psxonpsp660.bin", "destination": "psxonpsp660.bin", "required": False},
+            ],
+        }
+        for sys_id, extra_files in EXTRA_SYSTEM_FILES.items():
+            if sys_id in systems:
+                existing = {f["name"] for f in systems[sys_id].get("files", [])}
+                for ef in extra_files:
+                    if ef["name"] not in existing:
+                        systems[sys_id]["files"].append(ef)
+
         # ep128emu shared group for Enterprise
         if "enterprise-64-128" in systems:
             systems["enterprise-64-128"].setdefault("includes", [])