feat: add hle_fallback to 9 emulator profiles

Marked files with HLE fallback based on source code analysis:
- desmume: 3 files (NDSSystem.cpp fake BIOS generation)
- dolphin: 31 files (HLE for IPL, DSP, fonts, Wii system)
- pcsx_rearmed: 7 files (psxbios.c full HLE replacement)
- easyrpg: 4 files (RTP and soundfonts optional)
- dosbox_core: all MT-32/soundfont/BASS files
- dosbox_pure: all MT-32/soundfont files
- boytacean: 8 boot ROMs (open-source embedded in binary)
- citra: shared_font.bin only (HLE for font rendering)
- azahar: shared_font.bin only

Not modified (no HLE): beetle_psx, duckstation, ecwolf, emuscv.

emulators/pcsx_rearmed.yml

@@ -26,6 +26,7 @@ files:
     description: "SCPH-5500 (v3.0 09-09-96 J)"
     region: "NTSC-J"
     required: false
+    hle_fallback: true
     md5: "8dd7d5296a650fac7319bce665a6a53c"
     source_ref: "frontend/libretro.c:3710 (listed_bios[0])"
     notes: "Preferred JP BIOS, searched first by exact filename."
@@ -36,6 +37,7 @@ files:
     description: "SCPH-5501 (v3.0 11-18-96 A)"
     region: "NTSC-U"
     required: false
+    hle_fallback: true
     md5: "490f666e1afb15b7362b406ed1cea246"
     source_ref: "frontend/libretro.c:3710 (listed_bios[1])"
     notes: "Preferred US BIOS, searched first by exact filename."
@@ -46,6 +48,7 @@ files:
     description: "SCPH-5502 (v3.0 01-06-97 E)"
     region: "PAL"
     required: false
+    hle_fallback: true
     md5: "32736f17079d0b2b7024407c39bd3050"
     source_ref: "frontend/libretro.c:3710 (listed_bios[2])"
     notes: "Preferred EU BIOS, searched first by exact filename."
@@ -56,6 +59,7 @@ files:
     description: "PSP embedded PS1 BIOS (region-free, 512 KB or 4 MB accepted)"
     region: "Auto"
     required: false
+    hle_fallback: true
     md5: "c53ca5908936d412331790f4426c6c33"
     source_ref: "frontend/libretro.c:3711 (listed_bios[3])"
     notes: "Region detected from content at runtime. 4 MB combo image accepted but only first 512 KB read."
@@ -64,6 +68,7 @@ files:
     description: "SCPH-101 (v4.4 03-24-00 A) - PSone US"
     region: "NTSC-U"
     required: false
+    hle_fallback: true
     md5: "6e3735ff4c7dc899ee98981c18c3666d"
     source_ref: "frontend/libretro.c:3711 (listed_bios[4])"
     notes: "PSone slim model. Searched by filename after scph550x and psxonpsp660."
@@ -72,6 +77,7 @@ files:
     description: "SCPH-7001 (v4.1 12-16-97 A)"
     region: "NTSC-U"
     required: false
+    hle_fallback: true
     md5: "1e68c231d0896b7eadcad1d7d8e76129"
     source_ref: "frontend/libretro.c:3711 (listed_bios[5])"
     notes: "Searched by filename after psxonpsp660 and scph101."
@@ -80,6 +86,7 @@ files:
     description: "SCPH-1001 (v2.2 12-04-95 A)"
     region: "NTSC-U"
     required: false
+    hle_fallback: true
     md5: "924e392ed05558ffdb115408c263dccf"
     source_ref: "frontend/libretro.c:3711 (listed_bios[6])"
     notes: "Original US model. Last in the explicit filename search list."