feat: re-profile 40 emulators from fbalpha2012 to holani

batch re-profiled beetle, holani, kronos, mame variants, mednafen
cores with upstream verification. beetle_pce, mame, mame2010 excluded
(regressions detected, need manual review).

emulators/mednafen_snes.yml

@@ -1,8 +1,20 @@
-emulator: "mednafen_snes"
-type: alias
-alias_of: "bsnes"
-profiled_date: "2026-03-18"
+emulator: mednafen_snes
+type: libretro
+core_classification: frozen_snapshot
+source: "https://github.com/libretro/beetle-bsnes-libretro"
+upstream: "https://mednafen.github.io/"
+profiled_date: "2026-03-24"
 core_version: "v0.9.26"
 display_name: "Nintendo - SNES / SFC (Beetle bsnes)"
-note: "This core uses the same BIOS/firmware as bsnes. See emulators/bsnes.yml for details."
+cores: [mednafen_snes]
+systems: [nintendo-snes]
+
+# Frozen at Mednafen's SNES module, itself based on bsnes v059.
+# IPL ROM (SPC700 boot ROM) is embedded in the source code.
+# Only ModeNormal cartridge loading is supported (no BSX, Sufami Turbo, or Super Game Boy).
+# No subsystem interface (retro_load_game_special returns false).
+notes: >
+  Frozen snapshot of Mednafen's SNES module based on bsnes v059.
+  IPL ROM embedded in source. No external firmware required.
+
 files: []