feat: add 10 emulator profiles (119-series batch 4)

bennugd (game engine, no BIOS), cruzes (puzzle game, no BIOS),
dice (discrete arcade, no BIOS), ishiiruka (Dolphin fork, same BIOS),
mkxp_z (RPG Maker, 3 RTP dirs), onscripter (VN engine, no BIOS),
qemu (55 firmware files! SeaBIOS/VGA/iPXE/OpenBIOS/OpenSBI),
rustation (PS1 Rust, 22 BIOS by SHA-256), rvvm (RISC-V, OpenSBI),
reminiscence (Flashback engine, game data only)

135 total profiles.

emulators/reminiscence.yml

@@ -0,0 +1,85 @@
+emulator: REminiscence
+type: libretro
+source: "https://github.com/libretro/REminiscence"
+cores:
+  - reminiscence
+systems:
+  - flashback
+
+notes: |
+  REminiscence is a re-implementation of the Flashback (Delphine Software, 1992) game engine,
+  ported to libretro. Version 0.3.6. It is not a general-purpose emulator; it only runs the
+  original Flashback game data files.
+
+  The core sets need_fullpath = true and valid_extensions = "map" (libretro.cpp:67-68).
+  Content loading (retro_load_game) extracts the parent directory from the provided .MAP
+  file path and uses it as the data root via FileSystem (libretro.cpp:194-196).
+
+  Version detection (libretro.cpp:126-149) probes for these files in order:
+    DEMO_UK.ABA -> DOS Demo
+    INTRO.SEQ   -> DOS CD
+    LEVEL1.MAP  -> DOS
+    LEVEL1.LEV  -> Amiga
+    DEMO.LEV    -> Amiga Demo
+  Only kResourceTypeDOS is accepted by retro_load_game (line 199); Amiga data is rejected.
+
+  Language detection (libretro.cpp:151-175) probes for:
+    ENGCINE.TXT -> English
+    FR_CINE.TXT -> French
+    GERCINE.TXT -> German
+    SPACINE.TXT -> Spanish
+    ITACINE.TXT -> Italian
+    FRCINE.TXT  -> French (Amiga)
+  Falls back to English if none found.
+
+  All game data files are loaded from the content directory at runtime via FileSystem
+  (fs.cpp), which recursively scans the directory and matches filenames case-insensitively
+  (strcasecmp at fs.cpp:52). The resource system (resource.cpp) loads files by constructing
+  names like "LEVEL1.MAP", "GLOBAL.ICN", "PERSO.SPR", "FB_TXT.FNT", etc.
+
+  The core never calls RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY. All data files must live
+  alongside the loaded .MAP content file (or in subdirectories of its parent). There are
+  no BIOS or firmware files; the required files are the original Flashback game data.
+
+  Music is loaded from .mod files or Amiga-format module files (mod_player.cpp, staticres.cpp
+  lines 3198-3225). These are optional; the core has a built-in SFX player for in-game
+  action music (sfx_player.cpp with embedded music data in staticres.cpp).
+
+  VOICE.VCE from the SegaCD version can optionally be placed in the data directory for
+  in-game voice playback (resource.cpp:910).
+
+  INTRO.SEQ and other .SEQ files from the DOS CD version provide FMV cutscenes
+  (seq_player.cpp). Without them, the core falls back to polygon-based cutscenes.
+
+files: []
+
+analysis:
+  content_type: game_data
+  content_extensions: ["map"]
+  system_directory_used: false
+  filesystem_access: true
+  data_files_location: "same directory as loaded content"
+  game_data_files:
+    dos_floppy:
+      required:
+        - "LEVEL1.MAP through LEVEL7.MAP (level map data)"
+        - "LEVEL1.* (MBK, PGE, PAL, CT, SPC, RP, ANI, OBJ, TBN, SGD, BNQ, LEV)"
+        - "GLOBAL.ICN, GLOBAL.SPC, GLOBAL.FIB"
+        - "PERSO.SPR, PERSO.OFF"
+        - "FB_TXT.FNT"
+        - "ENGCINE.TXT or equivalent language file"
+        - "ENGCINE.BIN or equivalent"
+      optional:
+        - "intro, options, journal, etc. (.mod files for cutscene music)"
+        - "VOICE.VCE (SegaCD voice data)"
+    dos_cd:
+      additional:
+        - "INTRO.SEQ, CREDITS.SEQ, and other .SEQ cutscene videos"
+    demo:
+      archive: "DEMO_UK.ABA (contains all demo data in a single archive)"
+  detection_order:
+    - { file: "DEMO_UK.ABA", type: "DOS Demo" }
+    - { file: "INTRO.SEQ", type: "DOS CD" }
+    - { file: "LEVEL1.MAP", type: "DOS Floppy" }
+    - { file: "LEVEL1.LEV", type: "Amiga (rejected by libretro port)" }
+    - { file: "DEMO.LEV", type: "Amiga Demo (rejected by libretro port)" }