feat: hle_fallback on 39 emulator profiles (266 entries)

Batch analysis of all 273 profiles to identify HLE/embedded
fallbacks. Added hle_fallback: true where the core has verified
software replacement for missing BIOS files:

- Embedded ROMs: vice (102), ep128emu (22), fuse (18), frodo (4)
- HLE BIOS: bsnes* (33 across 3 profiles), puae (9 AROS),
  noods (4), melonds* (6 FreeBIOS), flycast (3 reios)
- Open-source replacements: sameboy (8), pokemini (1), gpsp (1)
- Built-in fallbacks: np2kai (7), atari800 (6 Altirra),
  picodrive (3), quasi88 (4), gambatte (2)

Conservative: only added where notes or source code confirm HLE.
Skipped 50+ profiles where files are optional alternatives, not
HLE replaceable (neocd, opera, kronos, pcem, etc.)

emulators/bsnes_hd_beta.yml

@@ -33,21 +33,27 @@ files:
   - name: dsp1.program.rom
     system: nintendo-snes
     required: false
+    hle_fallback: true
   - name: dsp1.data.rom
     system: nintendo-snes
     required: false
+    hle_fallback: true
   - name: dsp1b.program.rom
     system: nintendo-snes
     required: false
+    hle_fallback: true
   - name: dsp1b.data.rom
     system: nintendo-snes
     required: false
+    hle_fallback: true
   - name: dsp2.program.rom
     system: nintendo-snes
     required: false
+    hle_fallback: true
   - name: dsp2.data.rom
     system: nintendo-snes
     required: false
+    hle_fallback: true
   - name: dsp3.program.rom
     system: nintendo-snes
     required: false
@@ -58,14 +64,17 @@ files:
   - name: dsp4.program.rom
     system: nintendo-snes
     required: false
+    hle_fallback: true
   - name: dsp4.data.rom
     system: nintendo-snes
     required: false
+    hle_fallback: true
 
   # CX4 (Hitachi)
   - name: cx4.data.rom
     system: nintendo-snes
     required: false
+    hle_fallback: true
     size: 3072
     note: "HLE available — LLE optional for Mega Man X2/X3"
 
@@ -73,9 +82,11 @@ files:
   - name: st010.program.rom
     system: nintendo-snes
     required: false
+    hle_fallback: true
   - name: st010.data.rom
     system: nintendo-snes
     required: false
+    hle_fallback: true
   - name: st011.program.rom
     system: nintendo-snes
     required: false