mruby-socket: migrate HAL to ports/ directories

Move hal-posix-socket and hal-win-socket into
mruby-socket/ports/posix/ and mruby-socket/ports/win/.
Remove HAL auto-detection logic from mrbgem.rake.

Co-authored-by: Claude <noreply@anthropic.com>

mrbgems/hal-posix-socket/mrbgem.rake

@@ -1,8 +0,0 @@
-MRuby::Gem::Specification.new('hal-posix-socket') do |spec|
-  spec.license = 'MIT'
-  spec.author  = 'mruby developers'
-  spec.summary = 'POSIX HAL for mruby-socket (Linux, macOS, BSD, Unix)'
-
-  # HAL gem depends on feature gem - brings in mruby-socket automatically
-  spec.add_dependency 'mruby-socket', core: 'mruby-socket'
-end

mrbgems/hal-win-socket/mrbgem.rake

@@ -1,12 +0,0 @@
-MRuby::Gem::Specification.new('hal-win-socket') do |spec|
-  spec.license = 'MIT'
-  spec.author  = 'mruby developers'
-  spec.summary = 'Windows HAL for mruby-socket (Windows, MinGW)'
-
-  # HAL gem depends on feature gem - brings in mruby-socket automatically
-  spec.add_dependency 'mruby-socket', core: 'mruby-socket'
-
-  # Link Windows socket libraries
-  spec.linker.libraries << "wsock32"
-  spec.linker.libraries << "ws2_32"
-end

mrbgems/mruby-socket/mrbgem.rake

@@ -8,30 +8,4 @@ MRuby::Gem::Specification.new('mruby-socket') do |spec|
   spec.add_dependency('mruby-io', :core => 'mruby-io')
   spec.add_dependency('mruby-error', :core => 'mruby-error')
   # spec.add_dependency('mruby-mtest')
-
-  # Check if HAL gem is loaded
-  # HAL gems must be explicitly specified in build config (recommended) or via auto-selection below
-  spec.build.gems.one? { |g| g.name =~ /^hal-.*-socket$/ } or begin
-    # No HAL found - determine appropriate error message or auto-load
-    suggested_hal = if spec.for_windows?
-      'hal-win-socket'
-    elsif RUBY_PLATFORM =~ /linux|darwin|bsd/
-      'hal-posix-socket'
-    else
-      nil
-    end
-
-    if suggested_hal
-      # Auto-load HAL gem for convenience (for development)
-      # This works because HAL gems declare dependency on mruby-socket
-      warn "mruby-socket: No HAL specified, loading #{suggested_hal} (explicit selection recommended)"
-      spec.build.gem core: suggested_hal
-    else
-      # Unknown platform - fail with helpful message
-      fail "mruby-socket: No HAL available for platform '#{RUBY_PLATFORM}'.\n" \
-           "Please specify HAL gem explicitly in your build config:\n" \
-           "  conf.gem core: 'hal-posix-socket'   # For Linux/macOS/BSD\n" \
-           "  conf.gem core: 'hal-win-socket'     # For Windows"
-    end
-  end
 end

mrbgems/mruby-socket/ports/posix/socket_hal.c

@@ -137,21 +137,3 @@ mrb_hal_socket_unix_path(mrb_state *mrb, const char *sockaddr, size_t socklen)
 
   return mrb_str_new_cstr(mrb, ((const struct sockaddr_un*)sockaddr)->sun_path);
 }
-
-/*
- * Gem initialization
- */
-
-void
-mrb_hal_posix_socket_gem_init(mrb_state *mrb)
-{
-  (void)mrb;
-  /* HAL interface functions are called by mruby-socket gem */
-}
-
-void
-mrb_hal_posix_socket_gem_final(mrb_state *mrb)
-{
-  (void)mrb;
-  /* Cleanup handled by mrb_hal_socket_final called from mruby-socket */
-}

mrbgems/mruby-socket/ports/win/socket_hal.c

@@ -156,21 +156,3 @@ mrb_hal_socket_unix_path(mrb_state *mrb, const char *sockaddr, size_t socklen)
             "unix_path unsupported on Windows");
   return mrb_nil_value();
 }
-
-/*
- * Gem initialization
- */
-
-void
-mrb_hal_win_socket_gem_init(mrb_state *mrb)
-{
-  (void)mrb;
-  /* HAL interface functions are called by mruby-socket gem */
-}
-
-void
-mrb_hal_win_socket_gem_final(mrb_state *mrb)
-{
-  (void)mrb;
-  /* Cleanup handled by mrb_hal_socket_final called from mruby-socket */
-}