feat: converge dynamic plugins onto canonical homeagent-sdk

- Separate built-in plugin interface from external plugin interface
- Route dynamic plugin loading through homeagent-sdk/sdk using reflection
- Turn internal/sdk into an enhanced wrapper over canonical SDK types
- Vendor SDK repo snapshot under third_party/homeagent-sdk for stable builds
- Keep internal constructors/adapters for memory, knowledge, llm, settings
- Align dynamic QQ loading with canonical SDK chain

third_party/homeagent-sdk/hack/plugin-dev/packager.sh

@@ -0,0 +1,61 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# HomeAgent 插件打包工具
+# 将插件目录打包为 .hmap 分发包
+# 用法: ./packager.sh <plugin-dir> [输出路径]
+# 示例: ./packager.sh ./plugins/myplugin ./dist/myplugin-1.0.0.hmap
+
+PLUGIN_DIR="${1:-}"
+OUTPUT="${2:-}"
+
+if [ -z "$PLUGIN_DIR" ]; then
+	echo "用法: $0 <plugin-dir> [输出路径]"
+	echo "示例: $0 ./plugins/myplugin ./dist/myplugin-1.0.0.hmap"
+	exit 1
+fi
+
+PLUGIN_DIR="$(realpath "$PLUGIN_DIR")"
+PLUGIN_NAME="$(basename "$PLUGIN_DIR")"
+
+# 验证
+if [ ! -f "$PLUGIN_DIR/plugin.json" ]; then
+	echo "错误: 不存在 plugin.json: $PLUGIN_DIR"
+	exit 1
+fi
+
+VERSION="$(python3 -c "import json; print(json.load(open('$PLUGIN_DIR/plugin.json'))['version'])" 2>/dev/null || echo "unknown")"
+
+if [ -z "$OUTPUT" ]; then
+	mkdir -p dist
+	OUTPUT="$(realpath "dist/${PLUGIN_NAME}-${VERSION}.hmap")"
+fi
+
+echo "🔨 打包插件: $PLUGIN_NAME v$VERSION"
+echo "   源目录: $PLUGIN_DIR"
+echo "   输出:   $OUTPUT"
+
+# 检查入口文件
+ENTRY="$(python3 -c "import json; print(json.load(open('$PLUGIN_DIR/plugin.json'))['entry'])" 2>/dev/null || true)"
+if [ -n "$ENTRY" ] && [ ! -f "$PLUGIN_DIR/$ENTRY" ]; then
+	echo "⚠️  入口文件不存在: $ENTRY"
+	echo "   请先编译: cd $PLUGIN_DIR && make"
+	exit 1
+fi
+
+# 检查已编译的 .so
+if [ -f "$PLUGIN_DIR/plugin.so" ] && [ "$(stat -c %Y "$PLUGIN_DIR/plugin.so" 2>/dev/null)" -lt "$(stat -c %Y "$PLUGIN_DIR/plugin.go" 2>/dev/null)" ]; then
+	echo "⚠️  plugin.so 比 plugin.go 旧，建议重新编译"
+	echo "   请执行: cd $PLUGIN_DIR && make"
+fi
+
+cd "$PLUGIN_DIR"
+zip -r "$OUTPUT" . -x "*.git*" "Makefile" ".gitignore" "*.go" "go.mod" "go.sum" "*.test" "testdata/*" "_*" 2>&1 | tail -3
+
+echo ""
+echo "✅ 打包完成: $OUTPUT"
+echo "   大小: $(ls -lh "$OUTPUT" | awk '{print $5}')"
+echo ""
+echo "安装方式:"
+echo "  1. WebUI 插件管理 → 上传安装"
+echo "  2. AI 对话: 使用 plugin_install 工具并上传 URL"