refactor(toolchain)!: 工具链 plugindev 更名为 hmapdev，module path 改回 gitcode

- 目录 tools/plugindev → tools/hmapdev，可执行文件名/平台产物名同步
  （hmapdev_linux_amd64 等；包格式仍叫 .hmap）
- module path github.com/JianFeeeee/homeagent-sdk/tools/... → gitcode.com/...
  （与仓库实际托管一致；核心仓不依赖该 path，改动无外部影响）
- SDK 存储目录 ~/.homeagent/plugindev/sdk → ~/.homeagent/hmapdev/sdk
  新目录不存在而旧目录存在时沿用旧目录 → 已装 SDK 版本不会丢失
- 命令表/usage/--help/生成项目 README/示例 README/NSIS 安装器/
  package/build.sh/build-examples.sh 全部同步；PLUGINDEV 环境变量保留兼容
- sdk/ 目录零改动（公开接口不变）

验证：
- go build ./... ok；go test ./tools/hmapdev/ ok（含模板接线守卫 TestProcTemplate_CoversAllCoreMethods）
- bash -n package/{build,build-examples}.sh ok
- 端到端：hmapdev init demo && hmapdev build → dist/demo_bundle.hmap（linux+darwin）
- 本机安装 /usr/local/bin/hmapdev，旧名以软链保留；sdk list/current 正常

package/toolchain.nsi

@@ -48,7 +48,7 @@ Function pageConfirm
   ${EndIf}
   ${NSD_CreateLabel} 0 5u 100% 12u "将安装以下组件:"
   Pop $0
-  ${NSD_CreateLabel} 15u 20u 100% 12u "• plugindev.exe  — 插件开发工具"
+  ${NSD_CreateLabel} 15u 20u 100% 12u "• hmapdev.exe  — 插件开发工具"
   Pop $0
   ${NSD_CreateLabel} 15u 35u 100% 12u "• SDK ${SDK_VERSION} — 将从远程仓库自动下载"
   Pop $0
@@ -64,11 +64,11 @@ Section "Install" SEC_INSTALL
   SetOutPath "$INSTDIR"
   
   DetailPrint "复制工具链文件..."
-  File "plugindev.exe"
+  File "hmapdev.exe"
 
   DetailPrint "创建快捷方式..."
   CreateDirectory "$SMPROGRAMS\${PRODUCT_NAME}"
-  CreateShortCut "$SMPROGRAMS\${PRODUCT_NAME}\plugindev.lnk" "$INSTDIR\plugindev.exe" "" "$INSTDIR\plugindev.exe" 0
+  CreateShortCut "$SMPROGRAMS\${PRODUCT_NAME}\hmapdev.lnk" "$INSTDIR\hmapdev.exe" "" "$INSTDIR\hmapdev.exe" 0
 
   DetailPrint "配置环境变量..."
   ; Add to system PATH
@@ -93,23 +93,23 @@ Section "Install" SEC_INSTALL
     DetailPrint "Git 已安装: $1"
   ${Else}
     DetailPrint "未检测到 Git，将跳过 SDK 自动下载"
-    DetailPrint "安装完成后请手动运行: plugindev sdk install ${SDK_VERSION}"
+    DetailPrint "安装完成后请手动运行: hmapdev sdk install ${SDK_VERSION}"
   ${EndIf}
 
   ${If} $hasGit == "1"
     DetailPrint "正在下载 SDK ${SDK_VERSION}..."
-    nsExec::ExecToStack '"$INSTDIR\plugindev.exe" sdk install ${SDK_VERSION}'
+    nsExec::ExecToStack '"$INSTDIR\hmapdev.exe" sdk install ${SDK_VERSION}'
     Pop $0
     Pop $1
     ${If} $0 == 0
       StrCpy $sdkInstallOk "1"
       DetailPrint "SDK ${SDK_VERSION} 下载完成"
       DetailPrint "正在激活 SDK ${SDK_VERSION}..."
-      nsExec::Exec '"$INSTDIR\plugindev.exe" sdk use ${SDK_VERSION}'
+      nsExec::Exec '"$INSTDIR\hmapdev.exe" sdk use ${SDK_VERSION}'
       Pop $0
     ${Else}
       DetailPrint "SDK 下载失败 (错误码: $0)"
-      DetailPrint "请手动运行: plugindev sdk install ${SDK_VERSION}"
+      DetailPrint "请手动运行: hmapdev sdk install ${SDK_VERSION}"
     ${EndIf}
   ${EndIf}
 
@@ -126,10 +126,10 @@ SectionEnd
 
 Section "Uninstall"
   Delete "$INSTDIR\Uninstall.exe"
-  Delete "$INSTDIR\plugindev.exe"
+  Delete "$INSTDIR\hmapdev.exe"
   RMDir /r "$INSTDIR\sdk"
   RMDir "$INSTDIR"
-  Delete "$SMPROGRAMS\${PRODUCT_NAME}\plugindev.lnk"
+  Delete "$SMPROGRAMS\${PRODUCT_NAME}\hmapdev.lnk"
   RMDir "$SMPROGRAMS\${PRODUCT_NAME}"
   DeleteRegValue HKLM "SYSTEM\CurrentControlSet\Control\Session Manager\Environment" "HOMEAGENT_SDK_DIR"
   DeleteRegKey HKLM "Software\Microsoft\CurrentVersion\Uninstall\${PRODUCT_NAME}"