feat: scraper adds missing arcade BIOS, ep128emu includes, new profiles

libretro_scraper: EXTRA_ARCADE_FILES adds namcoc69/70/75, msx, qsound
to arcade system. segasp.zip added to dreamcast-arcade. ep128emu
includes injected for enterprise system.

new profiles: vba_m (GB/GBC/GBA with doc vs source notes),
beetle_gba (Mednafen GBA).

emulators/beetle_gba.yml

@@ -0,0 +1,14 @@
+# Beetle GBA (Mednafen) — Game Boy Advance (libretro)
+# ref: beetle-gba-libretro/mednafen/gba, docs.libretro.com/library/beetle_gba
+# Same BIOS as mGBA/VBA-M. Optional, no HLE fallback documented.
+emulator: Beetle GBA (Mednafen)
+type: libretro
+cores: [mednafen_gba]
+source: "https://github.com/libretro/beetle-gba-libretro"
+systems:
+  - nintendo-gba
+files:
+  - name: gba_bios.bin
+    system: nintendo-gba
+    required: false
+    md5: a860e8c0b6d573d191e4ec7db1b1e4f6

emulators/vba_m.yml

@@ -0,0 +1,29 @@
+# VBA-M — Game Boy / Game Boy Color / Game Boy Advance (libretro)
+# ref: visualboyadvance-m/src/libretro, docs.libretro.com/library/vba_m
+# Same BIOS as mGBA. Requires core option "Use BIOS file if found" = On.
+#
+# doc vs source: docs list gba_bios.bin md5 a860e8c0b6d573d191e4ec7db1b1e4f6
+# which is the standard GBA BIOS dump. Also accepts gb_bios.bin and gbc_bios.bin
+# for GB/GBC mode (not listed in mgba profile).
+emulator: VBA-M
+type: libretro
+cores: [vbam]
+source: "https://github.com/visualboyadvance-m/visualboyadvance-m"
+systems:
+  - nintendo-gb
+  - nintendo-gbc
+  - nintendo-gba
+files:
+  - name: gba_bios.bin
+    system: nintendo-gba
+    required: false
+    md5: a860e8c0b6d573d191e4ec7db1b1e4f6
+    note: "optional, core option vbam_usebios must be On"
+  - name: gb_bios.bin
+    system: nintendo-gb
+    required: false
+    md5: 32fbbd84168d3482956eb3c5051637f5
+  - name: gbc_bios.bin
+    system: nintendo-gbc
+    required: false
+    md5: dbfce9db9deaa2567f6a84fde55f9680

scripts/scraper/libretro_scraper.py

@@ -265,6 +265,38 @@ class Scraper(BaseScraper):
             if sys_id not in systems:
                 systems[sys_id] = sys_data
 
+        # 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
+        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},
+        ]
+        if "arcade" in systems:
+            existing = {f["name"] for f in systems["arcade"].get("files", [])}
+            for ef in EXTRA_ARCADE_FILES:
+                if ef["name"] not in existing:
+                    systems["arcade"]["files"].append(ef)
+
+        # segasp.zip for Sega System SP (Flycast)
+        if "sega-dreamcast-arcade" in systems:
+            existing = {f["name"] for f in systems["sega-dreamcast-arcade"].get("files", [])}
+            if "segasp.zip" not in existing:
+                systems["sega-dreamcast-arcade"]["files"].append({
+                    "name": "segasp.zip",
+                    "destination": "dc/segasp.zip",
+                    "required": True,
+                })
+
+        # ep128emu shared group for Enterprise
+        if "enterprise-64-128" in systems:
+            systems["enterprise-64-128"].setdefault("includes", [])
+            if "ep128emu" not in systems["enterprise-64-128"]["includes"]:
+                systems["enterprise-64-128"]["includes"].append("ep128emu")
+
         # Inject shared group references for systems that have core-specific
         # subdirectory requirements already defined in _shared.yml.
         SYSTEM_SHARED_GROUPS = {