feat: update 47 emulator profiles with core_classification and fixes

add core_classification, cores, upstream fields. fix false aliases
(fixnes, fsuae, gearboy, higan_sfc, higan_sfc_balanced, potator,
quicknes). add new profiles (fbneo_neogeo, flycast_gles2,
genesis_plus_gx_wide). remove verbose notes and disclaimers.

emulators/genesis_plus_gx_wide.yml

@@ -0,0 +1,91 @@
+emulator: Genesis Plus GX Wide
+type: libretro
+core_classification: enhanced_fork
+source: "https://github.com/libretro/Genesis-Plus-GX-Wide"
+upstream: "https://github.com/ekeeke/Genesis-Plus-GX"
+profiled_date: "2026-03-21"
+core_version: "v1.7.4"
+display_name: "Sega - MS/GG/MD/CD (Genesis Plus GX Wide)"
+cores:
+  - genesis_plus_gx_wide
+systems:
+  - sega-megadrive
+  - sega-megacd
+  - sega-mastersystem
+  - sega-gamegear
+  - sega-sg1000
+  - sega-pico
+
+notes: |
+  Widescreen hack of Genesis Plus GX by heyjoeway. Adds automatic
+  widescreen rendering to Mega Drive games. BIOS loading identical to
+  standard Genesis Plus GX (libretro.c:3547-3558).
+
+files:
+  - name: bios_CD_U.bin
+    system: sega-megacd
+    required: true
+    size: 131072
+    source_ref: "core/loadrom.c:409"
+
+  - name: bios_CD_E.bin
+    system: sega-megacd
+    required: true
+    size: 131072
+    source_ref: "core/loadrom.c:412"
+
+  - name: bios_CD_J.bin
+    system: sega-megacd
+    required: true
+    size: 131072
+    source_ref: "core/loadrom.c:415"
+
+  - name: bios_U.sms
+    system: sega-mastersystem
+    required: false
+    source_ref: "core/loadrom.c:511"
+
+  - name: bios_E.sms
+    system: sega-mastersystem
+    required: false
+    source_ref: "core/loadrom.c:514"
+
+  - name: bios_J.sms
+    system: sega-mastersystem
+    required: false
+    source_ref: "core/loadrom.c:517"
+
+  - name: bios.gg
+    system: sega-gamegear
+    required: false
+    source_ref: "core/loadrom.c:480"
+
+  - name: bios_MD.bin
+    system: sega-megadrive
+    required: false
+    size: 2048
+    source_ref: "libretro/libretro.c:3551"
+
+  - name: ggenie.bin
+    system: sega-megadrive
+    required: false
+    size: 32768
+    source_ref: "core/cart_hw/ggenie.c:64"
+
+  - name: areplay.bin
+    system: sega-megadrive
+    required: false
+    size: 65536
+    source_ref: "core/cart_hw/areplay.c:64"
+
+  - name: sk.bin
+    system: sega-megadrive
+    required: false
+    size: 2097152
+    source_ref: "core/cart_hw/md_cart.c:867"
+
+  - name: sk2chip.bin
+    system: sega-megadrive
+    required: false
+    size: 262144
+    source_ref: "core/cart_hw/md_cart.c:873"