Fix iOS release build: replace bash associative arrays with indexed arrays

macOS GitHub Actions runners ship bash 3.2, which does not support
  declare -A (requires bash 4.0+). Rewrote build-ios.sh and
  build-android.sh to use parallel indexed arrays instead.

scripts/build-android.sh

@@ -26,18 +26,10 @@ if [ -z "${ANDROID_NDK_HOME:-}" ]; then
   exit 1
 fi
 
-# Map Rust target -> Android ABI -> NDK toolchain target
-declare -A TARGET_ABI=(
-  ["aarch64-linux-android"]="arm64-v8a"
-  ["armv7-linux-androideabi"]="armeabi-v7a"
-  ["x86_64-linux-android"]="x86_64"
-)
-
-declare -A TARGET_CC=(
-  ["aarch64-linux-android"]="aarch64-linux-android21-clang"
-  ["armv7-linux-androideabi"]="armv7a-linux-androideabi21-clang"
-  ["x86_64-linux-android"]="x86_64-linux-android21-clang"
-)
+# Parallel arrays — bash 3.2 compatible (no declare -A)
+TARGETS=(        "aarch64-linux-android"             "armv7-linux-androideabi"             "x86_64-linux-android" )
+TARGET_ABIS=(    "arm64-v8a"                         "armeabi-v7a"                         "x86_64"              )
+TARGET_CCS=(     "aarch64-linux-android21-clang"     "armv7a-linux-androideabi21-clang"    "x86_64-linux-android21-clang" )
 
 # Find the NDK toolchain bin directory
 TOOLCHAIN="$ANDROID_NDK_HOME/toolchains/llvm/prebuilt/linux-x86_64/bin"
@@ -60,9 +52,10 @@ echo "    NDK: $ANDROID_NDK_HOME"
 echo "    Crates: ${CRATES[*]}"
 echo ""
 
-for target in "${!TARGET_ABI[@]}"; do
-  abi="${TARGET_ABI["$target"]}"
-  cc="${TARGET_CC["$target"]}"
+for i in "${!TARGETS[@]}"; do
+  target="${TARGETS[$i]}"
+  abi="${TARGET_ABIS[$i]}"
+  cc="${TARGET_CCS[$i]}"
   echo "  ── $target ($abi) ──"
 
   # Set linker/compiler for this target via CARGO_TARGET env vars
@@ -96,8 +89,8 @@ for target in "${!TARGET_ABI[@]}"; do
 done
 
 echo "==> Done. Libraries:"
-for target in "${!TARGET_ABI[@]}"; do
-  abi="${TARGET_ABI["$target"]}"
+for i in "${!TARGETS[@]}"; do
+  abi="${TARGET_ABIS[$i]}"
   echo "  $abi:"
   ls -lh "$OUT_DIR/$abi/"*.so
 done

scripts/build-ios.sh

@@ -21,22 +21,16 @@ TARGETS=(
   x86_64-apple-ios          # Simulator (Intel)
 )
 
-# Libraries to build and package
-declare -A LIB_NAMES=(
-  ["salvium-crypto"]="libsalvium_crypto"
-  ["salvium-ffi"]="libsalvium_ffi"
-)
-
-declare -A FRAMEWORK_NAMES=(
-  ["salvium-crypto"]="SalviumCrypto"
-  ["salvium-ffi"]="SalviumFfi"
-)
+# Libraries to build and package (parallel arrays — bash 3.2 compatible)
+CRATES=(       "salvium-crypto"      "salvium-ffi"    )
+LIB_NAMES=(    "libsalvium_crypto"   "libsalvium_ffi" )
+FRAMEWORK_NAMES=( "SalviumCrypto"    "SalviumFfi"     )
 
 echo "==> Building Salvium libraries for iOS targets..."
 
 for target in "${TARGETS[@]}"; do
   echo "  -> $target"
-  for crate in "${!LIB_NAMES[@]}"; do
+  for crate in "${CRATES[@]}"; do
     cargo build --release \
       --target "$target" \
       -p "$crate" \
@@ -47,9 +41,9 @@ done
 echo "==> Creating xcframeworks..."
 mkdir -p "$WORK_DIR"
 
-for crate in "${!LIB_NAMES[@]}"; do
-  lib="${LIB_NAMES["$crate"]}"
-  framework="${FRAMEWORK_NAMES["$crate"]}"
+for i in "${!CRATES[@]}"; do
+  lib="${LIB_NAMES[$i]}"
+  framework="${FRAMEWORK_NAMES[$i]}"
 
   echo "  -> $framework.xcframework"