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/noods.yml

@@ -26,6 +26,7 @@ files:
     system: nintendo-ds
     description: "ARM9 BIOS"
     required: false
+    hle_fallback: true
     size: 4096
     md5: "a392174eb3e572fed6447e956bde4b25"
     source_ref: "src/memory.cpp:130-142, src/memory.h:73"
@@ -35,6 +36,7 @@ files:
     system: nintendo-ds
     description: "ARM7 BIOS"
     required: false
+    hle_fallback: true
     size: 16384
     md5: "df692a80a5b1bc90728bc3dfc76cd948"
     source_ref: "src/memory.cpp:144-156, src/memory.h:74"
@@ -44,6 +46,7 @@ files:
     system: nintendo-ds
     description: "NDS firmware image"
     required: false
+    hle_fallback: true
     source_ref: "src/spi.cpp:62-160, src/settings.cpp:42"
     notes: "Auto-generated 128KB non-bootable firmware as fallback; native dump (>128KB) needed for firmware boot"
 
@@ -51,6 +54,7 @@ files:
     system: nintendo-gba
     description: "GBA BIOS"
     required: false
+    hle_fallback: true
     size: 16384
     md5: "a860e8c0b6d573d191e4ec7db1b1e4f6"
     source_ref: "src/memory.cpp:158-169, src/memory.h:75, src/core.cpp:244-252"