2026-10-27 iOS device candidate (branch claude/ios-candidate-2026-10-27)

Goal: pick the title for the first real iPhone run, measure memory on the iOS Simulator, apply cheap memory changes, deliver a signed IPA. Result and tables: docs/guides/ios-device-candidate.md. Recommendation: LAS (782 MB footprint in play, 60 fps on the Simulator); signed IPA at ~/Desktop/NappleIOS/LAS-com.napple.las.ipa (not installed).

Changes * crates/napple-build: --update-romfs in-place is allowed with --target ios-sim (a full app with dylibs and a 280 MB bundle that reads the RomFS from the game files; the games must sit outside ~/Documents, the Simulator process cannot read it: cp -c them to a scratch dir). A firmware-applet module that does not fit the Mach-O page layout (the Mii Maker's tiny sdk) is skipped with a note instead of failing the whole iOS build. * tools/build_ios.sh: -lcompression for libnapple-applet.dylib (link failed on the gfx command-recording LZ4). tools/build_ios_deps.sh: libvpx for iPhoneOS built as the generic arm64 target with the iOS toolchain (the darwin target forced the macOS SDK, "toolchain is unable to link"). * runtime/src/memlog.m + gfx/src/mtl_memstat.m: periodic memlog: line (footprint, peak, guest-mapped, Metal allocation, iOS available memory); on by default on iOS, NAPPLE_MEMLOG=1 elsewhere. NAPPLE_HEAP_CAP_MB overrides the guest heap cap for diagnosis (runtime/src/memory.c). * input/src/bindings.c: handheld (720p) is the default operation mode on iPhone / iPad.

Verified (Simulator, Xcode 27.1): all of the above built and run; LAS boots to gameplay with the default and with the device layout (3.25 GiB cap, 1 GiB alias); make -C input test passes. Not verified: anything on a phone. SMO stops after its menu ("Compiling shaders", Simulator colour-attachment budget), ACNH aborts on a cube-array texture, MK8D on an RGBA8 to RGBA32Uint texture view (gfx, not touched).