diff --git a/.gitignore b/.gitignore
index 6b2c52c..b01f7b3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,6 +10,11 @@ plugin.json
 build/
 dist/
 
+# plugindev 预编译二进制：只作为 release 附件分发，不进仓库历史。
+# 此前 5 个平台各 26-28MB 被 git 跟踪（约 137MB），每次重编都在历史里
+# 再叠一份，而它们本质是可从源码复现的产物。
+bin/
+
 # Test artifacts
 testdist/
 
diff --git a/README.md b/README.md
index 4f821d0..4568b88 100644
--- a/README.md
+++ b/README.md
@@ -142,13 +142,21 @@ func New(name string, sett SettingsAPI, regTool ToolRegistrar, regStage StageReg
 
 ## plugindev 工具链
 
-`plugindev` 提供插件开发全流程支持。仓库 `bin/` 提供各平台预制二进制（linux/darwin/windows × amd64/arm64），下载后直接加入 PATH 即可：
+`plugindev` 提供插件开发全流程支持。预编译二进制作为 **release 附件**分发（linux/darwin/windows × amd64/arm64），从
+[Releases](https://gitcode.com/JianFeeeee/homeagent-sdk/releases) 下载后加入 PATH 即可：
 
 ```bash
-curl -o plugindev https://gitcode.com/JianFeeeee/homeagent-sdk/-/raw/main/bin/plugindev_linux_amd64
+# 从 release 附件下载（以 v1.0.0 / linux amd64 为例）
+curl -Lo plugindev https://gitcode.com/JianFeeeee/homeagent-sdk/releases/download/v1.0.0/plugindev_linux_amd64
 chmod +x plugindev
+
+# 或从源码自己编
+cd tools/plugindev && go build -o plugindev .
 ```
 
+> 二进制不再随仓库分发（旧的 `bin/` 目录已停用）：5 个平台各 26-28MB，
+> 每次重编都在 git 历史里再叠一份，而它们本质是可从源码复现的产物。
+
 | 命令 | 说明 |
 |------|------|
 | `plugindev init <name> [--lua]` | 初始化插件项目（生成 plg.json、plugin.go 或 main.lua、go.mod、README.md） |
@@ -180,7 +188,7 @@ chmod +x plugindev
   "version": "1.0.0",
   "description": "天气查询插件",
   "author": "HomeAgent",
-  "entry": "plugin.so",
+  "entry": "plugin.bin",
   "tags": ["weather", "forecast"],
   "targets": "linux/amd64,windows/amd64",
   "outdir": "dist",
@@ -202,7 +210,7 @@ chmod +x plugindev
 | `version` | string | 版本号 |
 | `description` | string | 插件描述 |
 | `author` | string | 作者 |
-| `entry` | string | 入口文件（`plugin.so` / `plugin.dll` / `main.lua`） |
+| `entry` | string | 入口文件（`plugin.bin` / `main.lua`）。v1.0.0 起 Go 插件统一为 `plugin.bin`，不再区分平台后缀 |
 | `tags` | string[] | 标签 |
 | `targets` | string | 构建目标，逗号分隔（如 `linux/amd64,windows/amd64`，Lua 插件为 `lua`） |
 | `outdir` | string | 输出目录（默认 `dist`） |
@@ -217,11 +225,14 @@ chmod +x plugindev
 `.hmap` 为 ZIP 归档，包含：
 
 - `plugin.json` — 插件元数据
-- `plugin.so` — Go 编译产物（Linux）
-- `plugin.dll` — Go 编译产物（Windows）
-- `plugin.dylib` — Go 编译产物（macOS，bundle 模式）
+- `plugin.bin` — Go 编译产物（单平台构建）
+- `plugin.bin.<goos>.<goarch>` — 多平台 bundle 模式下每平台一份，
+  安装时 pluginmgr 挑当前平台那份重命名为 `plugin.bin`
 - `main.lua` — Lua 插件入口（Lua 插件时）
 
+> v1.0.0 起不再使用 `plugin.so`/`plugin.dll`/`plugin.dylib`——进程边界即 ABI 边界，
+> 不存在平台特定的动态库区分。旧产物新内核不会加载，会给出明确的重编提示。
+
 ## 插件生命周期
 
 ### 入口函数
diff --git a/README_EN.md b/README_EN.md
index ba5acc5..c20dce6 100644
--- a/README_EN.md
+++ b/README_EN.md
@@ -142,14 +142,30 @@ Plugin developers only need to implement the `Plugin` interface and export a `Ne
 
 ## plugindev Toolchain
 
-`plugindev` provides full development workflow support:
+`plugindev` provides full development workflow support. Prebuilt binaries ship as **release assets**
+(linux/darwin/windows × amd64/arm64); download from
+[Releases](https://gitcode.com/JianFeeeee/homeagent-sdk/releases) and put it on your PATH:
+
+```bash
+# From release assets (v1.0.0 / linux amd64 shown)
+curl -Lo plugindev https://gitcode.com/JianFeeeee/homeagent-sdk/releases/download/v1.0.0/plugindev_linux_amd64
+chmod +x plugindev
+
+# Or build from source
+cd tools/plugindev && go build -o plugindev .
+```
+
+> Binaries no longer ship inside the repository (the old `bin/` directory is retired): five
+> platforms at 26-28MB each piled another copy into git history on every rebuild, and they are
+> reproducible from source anyway.
 
 | Command | Description |
 |---------|-------------|
-| `plugindev init` | Initialize plugin project (generates plg.json, entry template) |
-| `plugindev build` | Build plugin, output .hmap package |
-| `plugindev clean` | Clean build artifacts |
-| `plugindev debug` | Run plugin in local debug mode |
+| `plugindev init <name> [--lua]` | Initialize plugin project (generates plg.json, plugin.go or main.lua, go.mod, README.md) |
+| `plugindev build [flags]` | Build and package into a `.hmap` (supports cross-compilation and bundle mode) |
+| `plugindev clean` | Clean `build/` and `dist/` plus generated files |
+| `plugindev debug [dir]` | Load plugin source through the Yaegi Go interpreter and start an interactive REPL |
+| `plugindev sdk <command>` | SDK version management (list/install/use/path/current/latest) |
 
 Supports both **Go** and **Lua** plugin languages.
 
@@ -163,7 +179,7 @@ Supports both **Go** and **Lua** plugin languages.
   "version": "1.0.0",
   "description": "Weather plugin",
   "author": "HomeAgent",
-  "entry": "plugin.so",
+  "entry": "plugin.bin",
   "tags": ["weather", "forecast"],
   "targets": "linux/amd64,windows/amd64",
   "outdir": "dist",
@@ -185,7 +201,7 @@ Supports both **Go** and **Lua** plugin languages.
 | `version` | string | Version |
 | `description` | string | Plugin description |
 | `author` | string | Author |
-| `entry` | string | Entry file (`plugin.so` / `main.lua`) |
+| `entry` | string | Entry file (`plugin.bin` / `main.lua`). Since v1.0.0 Go plugins uniformly build to `plugin.bin`—no per-platform suffix |
 | `tags` | string[] | Tags |
 | `targets` | string | Build targets, comma-separated (e.g. `linux/amd64,windows/amd64`) |
 | `outdir` | string | Output directory (default `dist`) |
@@ -198,10 +214,15 @@ Supports both **Go** and **Lua** plugin languages.
 `.hmap` is a ZIP archive containing:
 
 - `plugin.json` — plugin metadata
-- `plugin.so` — Go compiled artifact (Linux)
-- `plugin.dll` — Go compiled artifact (Windows)
+- `plugin.bin` — Go compiled artifact (single-platform build)
+- `plugin.bin.<goos>.<goarch>` — one per platform in bundle mode; on install pluginmgr picks
+  the one matching the current platform and renames it to `plugin.bin`
 - `main.lua` — Lua plugin entry (for Lua plugins)
 
+> Since v1.0.0 `plugin.so`/`plugin.dll`/`plugin.dylib` are no longer used—the process boundary
+> *is* the ABI boundary, so there is no platform-specific shared-library distinction. The new
+> kernel will not load old artifacts; it emits an explicit rebuild hint instead.
+
 ## Plugin Lifecycle
 
 ### Start & Stop
diff --git a/bin/plugindev_darwin_amd64 b/bin/plugindev_darwin_amd64
deleted file mode 100755
index e5b9264..0000000
Binary files a/bin/plugindev_darwin_amd64 and /dev/null differ
diff --git a/bin/plugindev_darwin_arm64 b/bin/plugindev_darwin_arm64
deleted file mode 100755
index 7e17007..0000000
Binary files a/bin/plugindev_darwin_arm64 and /dev/null differ
diff --git a/bin/plugindev_linux_amd64 b/bin/plugindev_linux_amd64
deleted file mode 100755
index 51274e0..0000000
Binary files a/bin/plugindev_linux_amd64 and /dev/null differ
diff --git a/bin/plugindev_linux_arm64 b/bin/plugindev_linux_arm64
deleted file mode 100755
index 27a4cd9..0000000
Binary files a/bin/plugindev_linux_arm64 and /dev/null differ
diff --git a/bin/plugindev_windows_amd64.exe b/bin/plugindev_windows_amd64.exe
deleted file mode 100755
index a771468..0000000
Binary files a/bin/plugindev_windows_amd64.exe and /dev/null differ
diff --git a/tools/plugindev/cmd_build.go b/tools/plugindev/cmd_build.go
index 2e974de..5701c9b 100644
--- a/tools/plugindev/cmd_build.go
+++ b/tools/plugindev/cmd_build.go
@@ -73,18 +73,9 @@ func cmdBuild(args []string) {
 	// Ensure go.mod exists with correct SDK path
 	sdkModule := ensureGoMod(plg, sdkPath)
 
-	// First build: fetch the SDK module (generates go.sum with zip hash)
+	// 保证 SDK 模块可解析，否则编译必死在 "missing go.sum entry"。
 	if sdkModule != "" {
-		if _, err := os.Stat("go.sum"); os.IsNotExist(err) {
-			dl := exec.Command("go", "mod", "download", sdkModule)
-			dl.Env = os.Environ()
-			dl.Stdout = os.Stdout
-			dl.Stderr = os.Stderr
-			fmt.Println("  downloading SDK module deps...")
-			if err := dl.Run(); err != nil {
-				fmt.Printf("  error: go mod download: %v\n", err)
-			}
-		}
+		ensureSDKResolvable(plg, sdkModule, sdkPath)
 	}
 
 	// Merge plg.json replaces + CLI overrides
@@ -343,6 +334,128 @@ func ensureGoMod(plg *PlgConfig, sdkPath string) string {
 	return sdkModule
 }
 
+// ensureSDKResolvable 保证 SDK 模块在编译前可解析。
+//
+// 为何需要这个函数：gitcode 的模块不在 proxy.golang.org 上。只要 go.mod
+// 里的 SDK 靠 require 版本号解析，而本地又没 go.sum 条目，go build 就报
+// "missing go.sum entry"；而原来那句 `go mod download <mod>` 会去公共 proxy
+// 拉一个永远拉不到的条目，超时后只打一行 warn 就继继编译，紧接着死在
+// 同一个错误上——新用户拿到的是两段无关的报错。
+//
+// 三级策略，按代价递增：
+//  1. go.mod 已有指向本地目录的 replace —— 什么都不用做（replace 到目录时
+//     go 不需要也不校验 go.sum）。
+//  2. 能定位到本机 SDK 源码 —— 写入 replace。这是存量项目（go.mod 旧、
+//     无 replace）的救场路径。
+//  3. 都不行 —— 跑 `go mod tidy`（带 -mod=mod）让它自己去试，失败则给
+//     可操作的提示而不是让用户去猜。
+func ensureSDKResolvable(plg *PlgConfig, sdkModule, sdkPath string) {
+	data, err := os.ReadFile("go.mod")
+	if err != nil {
+		return
+	}
+
+	// 策略 1：已有指向本地目录的 replace。
+	// replace 目标带 / 或 . 开头的才是路径；指向另一个模块的 replace 不算。
+	for _, line := range strings.Split(string(data), "\n") {
+		line = strings.TrimSpace(line)
+		if !strings.HasPrefix(line, "replace ") || !strings.Contains(line, sdkModule) {
+			continue
+		}
+		parts := strings.Fields(line)
+		if len(parts) < 4 {
+			continue
+		}
+		target := parts[3]
+		if strings.HasPrefix(target, ".") || strings.HasPrefix(target, "/") ||
+			strings.Contains(target, ":/") || strings.Contains(target, ":\\") {
+			return // 已指向本地目录，无需 go.sum
+		}
+	}
+
+	// 策略 2：能定位到本机 SDK 就写 replace。
+	// resolveSDKPath 失败会 os.Exit，所以只在能确定拿到路径时调用它背后的探测。
+	if root := findLocalSDK(sdkPath); root != "" {
+		if appendGoModReplace(sdkModule, root) {
+			fmt.Printf("  SDK 指向本机源码（已写入 go.mod replace）：%s\n", root)
+			return
+		}
+	}
+
+	// 策略 3：交给 go mod tidy。
+	if _, err := os.Stat("go.sum"); err == nil {
+		return // 已有 go.sum，不插手
+	}
+	fmt.Println("  解析 SDK 依赖（go mod tidy）...")
+	tidy := exec.Command("go", "mod", "tidy")
+	tidy.Env = append(os.Environ(), "GOFLAGS=-mod=mod")
+	if out, err := tidy.CombinedOutput(); err != nil {
+		fmt.Printf("  warn: go mod tidy 失败：%v\n", err)
+		if len(out) > 0 {
+			fmt.Printf("  %s\n", strings.TrimSpace(string(out)))
+		}
+		fmt.Printf("  提示：%s 不在公共 proxy 上。用以下任一方式指向本机 SDK：\n", sdkModule)
+		fmt.Printf("    plugindev sdk install latest      # 装一份到 ~/.homeagent/plugindev/sdk\n")
+		fmt.Printf("    plugindev build --sdk-path <路径>  # 或直接指定源码目录\n")
+	}
+}
+
+// findLocalSDK 探测本机 SDK 源码根目录，找不到返回空串。
+//
+// 与 resolveSDKPath 的区别：后者找不到就 os.Exit，适合“必须有”的调用点；
+// 这里是“有则更好”的探测，不能把构建搞挂。
+func findLocalSDK(sdkPath string) string {
+	candidates := []string{}
+	if sdkPath != "" {
+		if abs, err := filepath.Abs(sdkPath); err == nil {
+			candidates = append(candidates, abs)
+		}
+	}
+	// plugindev 自身所在位置往上三级（tools/plugindev/plugindev → SDK 根）
+	if self, err := os.Executable(); err == nil {
+		candidates = append(candidates, filepath.Dir(filepath.Dir(filepath.Dir(self))))
+	}
+	// plugindev sdk use 选定的版本
+	store := os.Getenv("HOMEAGENT_SDK_DIR")
+	if store == "" {
+		if home, err := os.UserHomeDir(); err == nil {
+			store = filepath.Join(home, ".homeagent", "plugindev", "sdk")
+		}
+	}
+	if store != "" {
+		if d, err := os.ReadFile(filepath.Join(store, "current")); err == nil {
+			if ver := strings.TrimSpace(string(d)); ver != "" {
+				candidates = append(candidates, filepath.Join(store, ver))
+			}
+		}
+	}
+	for _, c := range candidates {
+		if c == "" {
+			continue
+		}
+		if _, err := os.Stat(filepath.Join(c, "sdk", "plugin.go")); err == nil {
+			return c
+		}
+	}
+	return ""
+}
+
+// appendGoModReplace 向 go.mod 追加一条 replace，成功返回 true。
+func appendGoModReplace(module, localPath string) bool {
+	data, err := os.ReadFile("go.mod")
+	if err != nil {
+		return false
+	}
+	abs, err := filepath.Abs(localPath)
+	if err != nil {
+		return false
+	}
+	abs = strings.ReplaceAll(abs, "\\", "/")
+	s := strings.TrimRight(string(data), "\r\n")
+	s += fmt.Sprintf("\n\nreplace %s => %s\n", module, abs)
+	return os.WriteFile("go.mod", []byte(s), 0644) == nil
+}
+
 func resolveSDKPath(sdkPath string) string {
 	if sdkPath != "" {
 		abs, _ := filepath.Abs(sdkPath)
@@ -465,8 +578,8 @@ func buildTarget(plg *PlgConfig, target, outDir, sdkPath string) {
 }
 
 type binEntry struct {
-	src string // 磁盘路径，如 build/plugin.so
-	zip string // zip 中条目名，如 plugin.so
+	src string // 磁盘路径，如 build/plugin.bin
+	zip string // zip 中条目名，如 plugin.bin.linux.amd64
 }
 
 // createBundleHmap 创建包含多平台二进制的 bundle .hmap 文件。
diff --git a/tools/plugindev/cmd_init.go b/tools/plugindev/cmd_init.go
index 5f03abe..4934955 100644
--- a/tools/plugindev/cmd_init.go
+++ b/tools/plugindev/cmd_init.go
@@ -59,6 +59,14 @@ type TemplateData struct {
 	GoVersion  string
 	SDKModule  string
 	SDKVersion string
+
+	// SDKLocalPath 是本机 SDK 源码绝对路径，写入生成的 go.mod 作为 replace 目标。
+	//
+	// 为何必须写：gitcode 的模块不在 proxy.golang.org 上，只 require 一个
+	// 版本号的 go.mod 配上缺失的 go.sum，新用户第一次 `plugindev build`
+	// 必定死在 "missing go.sum entry"，而 `go mod tidy` 又会去公共 proxy 拉
+	// 一个不存在的条目。有了本地 replace，go 完全不需要 go.sum 条目。
+	SDKLocalPath string
 }
 
 func cmdInit(args []string) {
@@ -109,7 +117,12 @@ func cmdInit(args []string) {
 		os.Exit(1)
 	}
 
-	entry := "plugin.so"
+	// Go 插件统一产出 plugin.bin（v1.0.0 子进程模式）。
+	//
+	// 此前这里写 "plugin.so"，scaffold 出来的 plg.json 就带着一个已退场的
+	// entry 值，新手跟着模板走会误以为自己在做 C ABI 插件。
+	// build 实际不看这个值（只用它区分 Lua），但模板不应误导。
+	entry := "plugin.bin"
 	var targets string
 	if isLua {
 		entry = "main.lua"
@@ -137,14 +150,15 @@ func cmdInit(args []string) {
 	}
 
 	// Detect SDK info for Go plugin go.mod.
-	// 生成的 go.mod 只 require SDK 线上模块版本，不写本地路径 replace；
-	// 本地调试请用 `plugindev build --sdk-path <path>` 或手动加 replace。
+	// 生成的 go.mod 除 require 外还写一条指向本机 SDK 的 replace：
+	// 否则 scaffold 出来的项目第一次 build 必定失败（详见 SDKLocalPath 注释）。
 	if !isLua {
-		sdkMod, goVer, _, sdkVer := detectSDKInfo()
+		sdkMod, goVer, sdkRoot, sdkVer := detectSDKInfo()
 		data.ModulePath = name
 		data.GoVersion = goVer
 		data.SDKModule = sdkMod
 		data.SDKVersion = "v" + sdkVer
+		data.SDKLocalPath = strings.ReplaceAll(sdkRoot, "\\", "/")
 	}
 
 	if err := os.MkdirAll(dir, 0755); err != nil {
diff --git a/tools/plugindev/templates.go b/tools/plugindev/templates.go
index bcc018c..ff8f97e 100644
--- a/tools/plugindev/templates.go
+++ b/tools/plugindev/templates.go
@@ -19,7 +19,12 @@ const tmplGoMod = `module {{.ModulePath}}
 go {{.GoVersion}}
 
 require {{.SDKModule}} {{.SDKVersion}}
-`
+{{if .SDKLocalPath}}
+// SDK 指向本机源码。gitcode 的模块不在 proxy.golang.org 上，
+// 没有这条 replace 就需要 go.sum 条目，而那个条目无处可拉。
+// 若你已有可访问的私有 proxy，可删掉本行。
+replace {{.SDKModule}} => {{.SDKLocalPath}}
+{{end}}`
 
 const tmplPluginGo = `package main