fix: replace declare -A with POSIX-compatible array syntax for cross-shell compatibility

- Replace associative array with regular array using key:value pairs
- Use parameter expansion for splitting pairs
- Ensures compatibility with bash, zsh, and other POSIX shells
- Fixes 'declare: -A: invalid option' error on macOS/zsh

Author: Taniya Mathur

publish.sh

@@ -90,19 +90,21 @@ check_python_version() {
 check_and_install_packages() {
     print_info "Checking required Python packages..."
 
-    # List of required packages (import_name:package_name)
-    declare -A required_packages=(
-        ["typer"]="typer"
-        ["rich"]="rich" 
-        ["boto3"]="boto3"
-        ["yaml"]="PyYAML"
+    # List of required packages (import_name:package_name pairs)
+    required_packages=(
+        "typer:typer"
+        "rich:rich"
+        "boto3:boto3"
+        "yaml:PyYAML"
     )
     missing_packages=()
 
     # Check each package
-    for import_name in "${!required_packages[@]}"; do
+    for package_pair in "${required_packages[@]}"; do
+        import_name="${package_pair%%:*}"
+        package_name="${package_pair##*:}"
         if ! $PYTHON_CMD -c "import $import_name" >/dev/null 2>&1; then
-            missing_packages+=("${required_packages[$import_name]}")
+            missing_packages+=("$package_name")
         fi
     done