feat: add 12 batocera standalone profiles, update 3 existing

New profiles: citron (Switch), clk (multi-system), demul (Hikaru),
eka2l1 (Symbian/N-Gage), gsplus (Apple IIGS), lexaloffle (PICO-8),
openmsx (MSX), ryujinx (Switch), shadps4 (PS4), tsugaru (FM Towns),
x16emu (Commander X16), xroar (Dragon/CoCo), zc210 (Zelda Classic).
Updated: amiberry, fsuae (standalone Amiga), ymir (Saturn standalone).

emulators/ymir.yml

@@ -1,10 +1,14 @@
 emulator: ymir
 type: standalone + libretro
 core_classification: community_fork
-source: "https://github.com/warmenhoven/Ymir/tree/libretro"
+source:
+  standalone: "https://github.com/StrikerX3/Ymir"
+  libretro: "https://github.com/warmenhoven/Ymir/tree/libretro"
 upstream: "https://github.com/StrikerX3/Ymir"
-profiled_date: "2026-03-25"
-core_version: "PR#746"
+profiled_date: "2026-03-26"
+core_version:
+  standalone: "v0.2.1"
+  libretro: "PR#746"
 display_name: "Sega - Saturn (Ymir)"
 cores:
   - ymir
@@ -16,22 +20,27 @@ notes: |
   warmenhoven wraps the shared ymir-core library (PR #746, not yet merged).
   No .info file exists in libretro-core-info.
 
-  Saturn BIOS search order:
-    1. {system}/sega_101.bin
-    2. {system}/mpr-17933.bin
-    3. {system}/saturn_bios.bin
-  First file found with exact 512 KiB size wins. No HLE fallback for IPL.
+  Standalone: scans configured directories recursively for files matching
+  the expected size. No specific filenames required. Identifies known ROMs
+  by XXH128 hash from an internal database (19 IPL variants, 4 CD Block
+  versions, 2 ROM carts). Unknown files are accepted if size matches.
 
-  CD Block LLE: optional low-level CD drive emulation. Scans {system}/cdb/
-  for any 64 KiB file. Falls back to HLE when disabled or no ROM found.
-  Known versions in upstream db: 1.04, 1.05, 1.06.
+  Libretro: searches {system}/sega_101.bin, mpr-17933.bin, saturn_bios.bin
+  in order. First file found with exact 512 KiB size wins.
 
-  ROM cartridges: KoF95 and Ultraman shipped with physical ROM carts. The
-  core auto-detects required cartridge from its game database.
+  Batocera standalone: configgen maps IPLROMImages to /userdata/bios,
+  CDBlockROMImages to /userdata/roms/saturn/cdb/, ROMCartImages to
+  /userdata/roms/saturn.
+
+  No HLE fallback for IPL ROM. CD Block LLE is optional; falls back to
+  HLE when disabled or no ROM found. Known CDB versions: 1.04, 1.05, 1.06.
+
+  ROM cartridges: KoF95 and Ultraman shipped with physical ROM carts.
+  Auto-detected from game database when loading a disc.
 
   Addon cartridges: 1M/4M DRAM expansion handled via core option (no files).
 
-  Upstream uses XXH128 hashes for ROM identification only, not validation.
+  XXH128 hashes used for ROM identification only, not validation.
   All file loading validates size only.
 
 files:
@@ -42,7 +51,9 @@ files:
     validation: [size]
     aliases: [mpr-17933.bin, saturn_bios.bin]
     description: "Saturn IPL ROM (BIOS). Any region accepted."
-    source_ref: "libretro.cpp:260-263,534-558"
+    source_ref:
+      standalone: "apps/ymir-sdl3/src/util/rom_loader.cpp:9-22, apps/ymir-sdl3/src/app/rom_manager.cpp:14-56, libs/ymir-core/include/ymir/sys/memory_defs.hpp:9"
+      libretro: "libretro.cpp:260-263,534-558"
 
   - name: "cdb/cdb_rom.bin"
     system: sega-saturn
@@ -50,8 +61,10 @@ files:
     hle_fallback: true
     size: 65536
     validation: [size]
-    description: "SH1 CD Block ROM for low-level CD drive emulation. Core scans cdb/ subdirectory for any matching file."
-    source_ref: "libretro.cpp:567-591"
+    description: "SH1 CD Block ROM for low-level CD drive emulation. Scans cdb/ subdirectory for any matching file."
+    source_ref:
+      standalone: "apps/ymir-sdl3/src/util/rom_loader.cpp:25-38, apps/ymir-sdl3/src/app/rom_manager.cpp:58-93, libs/ymir-core/include/ymir/hw/sh1/sh1_defs.hpp:7"
+      libretro: "libretro.cpp:567-591"
 
   - name: "mpr-18811-mx.ic1"
     system: sega-saturn
@@ -60,7 +73,9 @@ files:
     size: 2097152
     validation: [size]
     description: "ROM cartridge for The King of Fighters '95."
-    source_ref: "libretro.cpp:619-620,597-616"
+    source_ref:
+      standalone: "apps/ymir-sdl3/src/app/rom_manager.cpp:96-131, libs/ymir-core/include/ymir/db/rom_cart_db.hpp:19-22"
+      libretro: "libretro.cpp:619-620,597-616"
 
   - name: "mpr-19367-mx.ic1"
     system: sega-saturn
@@ -69,4 +84,6 @@ files:
     size: 2097152
     validation: [size]
     description: "ROM cartridge for Ultraman: Hikari no Kyojin Densetsu."
-    source_ref: "libretro.cpp:619,621,597-616"
+    source_ref:
+      standalone: "apps/ymir-sdl3/src/app/rom_manager.cpp:96-131, libs/ymir-core/include/ymir/db/rom_cart_db.hpp:25-28"
+      libretro: "libretro.cpp:619,621,597-616"