diff --git a/.github/workflows/github-pages.yml b/.github/workflows/github-pages.yml
index cd6ed80..c9762d7 100644
--- a/.github/workflows/github-pages.yml
+++ b/.github/workflows/github-pages.yml
@@ -24,7 +24,7 @@ jobs:
 
       - name: Install dependencies
         working-directory: web
-        run: bun install --frozen-lockfile
+        run: bun install
 
       - name: Build
         working-directory: web
diff --git a/CHANGELOG.md b/CHANGELOG.md
index e103257..c060bff 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,8 @@
 
 ## Unreleased
 
++ [优化] 优化节点插件SDK及HTML节点插件交互。
+
 ## v0.8.0 - 2026-07-15
 
 + [新增] 画布节点插件系统:支持通过 URL 动态安装/启用/更新/卸载远程节点插件。
diff --git a/plugins/canvas/html/package.json b/plugins/canvas/html/package.json
index 4916781..89f1f9e 100644
--- a/plugins/canvas/html/package.json
+++ b/plugins/canvas/html/package.json
@@ -1,6 +1,6 @@
 {
     "name": "canvas-plugin-html",
-    "version": "1.0.0",
+    "version": "1.1.0",
     "private": true,
     "type": "module",
     "description": "Infinite Canvas HTML 节点插件",
diff --git a/plugins/canvas/html/src/index.tsx b/plugins/canvas/html/src/index.tsx
index 1175ed8..1700511 100644
--- a/plugins/canvas/html/src/index.tsx
+++ b/plugins/canvas/html/src/index.tsx
@@ -1,10 +1,68 @@
 // HTML 节点:沙箱 iframe 渲染 HTML,{{input}} 会替换为上游文本节点内容。
-import { definePlugin, useMemo, useState } from "@infinite-canvas/plugin-sdk";
+// 交互:预览态 iframe 默认 pointer-events:none —— 鼠标事件穿透到宿主节点体,
+// 因此点节点任意位置都能拖动,无需在节点上加任何标题栏/按钮。
+// 「编辑/预览」与「交互」开关都放在节点外的悬浮工具条(toolbar 扩展点),状态存 metadata。
+import { definePlugin, useMemo, useRef, useState } from "@infinite-canvas/plugin-sdk";
 import type { CanvasNodeContentProps } from "@infinite-canvas/plugin-sdk";
 
+// 源码编辑器行高/字号,行号槽与文本域必须完全一致才能对齐
+const EDITOR_FONT = 12;
+const EDITOR_LINE = 20;
+
+function HtmlEditor({ ctx, value }: { ctx: CanvasNodeContentProps["ctx"]; value: string }) {
+    const gutterRef = useRef<HTMLDivElement>(null);
+    // 行数:按换行统计,至少 1 行;value 变化时重算
+    const lineCount = useMemo(() => Math.max(1, value.split("\n").length), [value]);
+    const [scrollTop, setScrollTop] = useState(0);
+
+    const codeStyle = { fontFamily: "monospace", fontSize: EDITOR_FONT, lineHeight: `${EDITOR_LINE}px`, boxSizing: "border-box" } as const;
+
+    return (
+        <div data-canvas-no-zoom style={{ height: "100%", width: "100%", display: "flex", overflow: "hidden", borderRadius: 16, background: ctx.theme.node.fill }} onMouseDown={(e) => e.stopPropagation()}>
+            {/* 行号槽:跟随文本域滚动,不可单独滚动 */}
+            <div
+                ref={gutterRef}
+                aria-hidden
+                style={{
+                    ...codeStyle,
+                    flex: "0 0 auto",
+                    padding: "16px 8px 16px 12px",
+                    textAlign: "right",
+                    color: ctx.theme.node.placeholder,
+                    background: `${ctx.theme.toolbar.panel}66`,
+                    borderRight: `1px solid ${ctx.theme.node.stroke}`,
+                    overflow: "hidden",
+                    userSelect: "none",
+                    whiteSpace: "pre",
+                }}
+            >
+                {/* 用负 margin 让整列跟随 scrollTop 平移,和 textarea 同步 */}
+                <div style={{ transform: `translateY(${-scrollTop}px)` }}>
+                    {Array.from({ length: lineCount }, (_, i) => (
+                        <div key={i}>{i + 1}</div>
+                    ))}
+                </div>
+            </div>
+            <textarea
+                autoFocus
+                value={value}
+                placeholder="<div>Hello, {{input}}</div>"
+                spellCheck={false}
+                wrap="off"
+                onChange={(e) => ctx.updateMetadata({ content: e.target.value })}
+                onScroll={(e) => setScrollTop(e.currentTarget.scrollTop)}
+                onMouseDown={(e) => e.stopPropagation()}
+                onWheel={(e) => e.stopPropagation()}
+                style={{ ...codeStyle, flex: "1 1 auto", minWidth: 0, height: "100%", resize: "none", background: "transparent", padding: "16px 16px 16px 12px", outline: "none", border: "none", color: ctx.theme.node.text, whiteSpace: "pre", overflow: "auto" }}
+            />
+        </div>
+    );
+}
+
 function HtmlContent({ ctx }: CanvasNodeContentProps) {
-    const [editing, setEditing] = useState(false);
     const value = ctx.node.metadata?.content || "";
+    const editing = Boolean(ctx.node.metadata?.editing);
+    const interactive = Boolean(ctx.node.metadata?.interactive);
     const upstreamText = useMemo(
         () =>
             ctx
@@ -16,23 +74,29 @@ function HtmlContent({ ctx }: CanvasNodeContentProps) {
     );
     const html = value.replace(/\{\{\s*input\s*\}\}/g, upstreamText);
 
-    const toggle = { position: "absolute", right: 8, top: 8, zIndex: 20, width: 32, height: 32, display: "grid", placeItems: "center", borderRadius: 8, border: `1px solid ${ctx.theme.node.stroke}`, background: `${ctx.theme.toolbar.panel}dd`, color: ctx.theme.node.text, cursor: "pointer" } as const;
+    if (editing) {
+        return <HtmlEditor ctx={ctx} value={value} />;
+    }
 
+    if (!value) {
+        return (
+            <div style={{ height: "100%", width: "100%", display: "flex", flexDirection: "column", alignItems: "center", justifyContent: "center", gap: 8, color: ctx.theme.node.placeholder }}>
+                <span style={{ fontSize: 26 }}>{"</>"}</span>
+                <span style={{ fontSize: 13 }}>选中节点,点上方工具条的 ✎ 编辑 HTML</span>
+            </div>
+        );
+    }
+
+    // 预览态:iframe 仅在「节点已选中 + 开启交互」时接收鼠标;否则穿透,保证首次点击能选中节点、弹出工具条。
+    const liveIframe = interactive && ctx.isSelected;
     return (
-        <div data-canvas-no-zoom onMouseDown={(e) => e.stopPropagation()} style={{ position: "relative", height: "100%", width: "100%", display: "flex", flexDirection: "column" }}>
-            <button type="button" style={toggle} onClick={() => setEditing((v) => !v)} title={editing ? "预览" : "编辑源码"}>
-                {editing ? "👁" : "✎"}
-            </button>
-            {editing ? (
-                <textarea autoFocus value={value} placeholder="<div>Hello, {{input}}</div>" onChange={(e) => ctx.updateMetadata({ content: e.target.value })} onWheel={(e) => e.stopPropagation()} style={{ height: "100%", width: "100%", resize: "none", background: "transparent", padding: 16, fontFamily: "monospace", fontSize: 12, outline: "none", border: "none", color: ctx.theme.node.text }} />
-            ) : value ? (
-                <iframe title="html-preview" sandbox="allow-scripts allow-forms" style={{ height: "100%", width: "100%", border: 0, borderRadius: 16, background: "#fff" }} srcDoc={html} />
-            ) : (
-                <div style={{ height: "100%", width: "100%", display: "flex", flexDirection: "column", alignItems: "center", justifyContent: "center", gap: 8, color: ctx.theme.node.placeholder }}>
-                    <span style={{ fontSize: 26 }}>{"</>"}</span>
-                    <span style={{ fontSize: 14 }}>编辑 HTML 源码</span>
-                </div>
-            )}
+        <div data-canvas-no-zoom={liveIframe || undefined} style={{ position: "relative", height: "100%", width: "100%" }}>
+            <iframe
+                title="html-preview"
+                sandbox="allow-scripts allow-forms"
+                srcDoc={html}
+                style={{ height: "100%", width: "100%", border: 0, borderRadius: 16, background: "#fff", display: "block", pointerEvents: liveIframe ? "auto" : "none" }}
+            />
         </div>
     );
 }
@@ -40,7 +104,7 @@ function HtmlContent({ ctx }: CanvasNodeContentProps) {
 export default definePlugin({
     id: "html",
     name: "HTML 节点",
-    version: "1.0.0",
+    version: "1.1.0",
     description: "沙箱 iframe 渲染 HTML,支持 {{input}} 注入上游文本",
     nodes: [
         {
@@ -51,7 +115,36 @@ export default definePlugin({
             defaultSize: { width: 420, height: 320 },
             defaultMetadata: { content: "" },
             minimapColor: "#ec4899",
+            hidePanel: true, // 纯展示型节点:点击/新建不弹出下方生图面板
             Content: HtmlContent,
+            // 所有开关都在节点外的悬浮工具条,不占用节点内部空间
+            toolbar: (ctx) => {
+                const editing = Boolean(ctx.node.metadata?.editing);
+                const interactive = Boolean(ctx.node.metadata?.interactive);
+                const hasContent = Boolean(ctx.node.metadata?.content);
+                const items = [
+                    {
+                        id: "html-toggle-edit",
+                        title: editing ? "预览渲染结果" : "编辑 HTML 源码",
+                        label: editing ? "预览" : "编辑",
+                        icon: editing ? "👁" : "✎",
+                        active: editing,
+                        onClick: () => ctx.updateMetadata({ editing: !editing }),
+                    },
+                ];
+                // 预览且有内容时,才提供「交互」开关:开=可点击/滚动页面,关=整块可拖动
+                if (!editing && hasContent) {
+                    items.push({
+                        id: "html-toggle-interactive",
+                        title: interactive ? "锁定预览(整块可拖动)" : "允许与页面交互(点击/滚动)",
+                        label: interactive ? "锁定" : "交互",
+                        icon: interactive ? "🔒" : "👆",
+                        active: interactive,
+                        onClick: () => ctx.updateMetadata({ interactive: !interactive }),
+                    });
+                }
+                return items;
+            },
         },
     ],
 });
diff --git a/plugins/canvas/sdk/src/types.ts b/plugins/canvas/sdk/src/types.ts
index a2a9ee2..e851073 100644
--- a/plugins/canvas/sdk/src/types.ts
+++ b/plugins/canvas/sdk/src/types.ts
@@ -150,6 +150,7 @@ export type CanvasNodeContext = {
     node: CanvasNodeData;
     theme: CanvasTheme;
     scale: number;
+    isSelected: boolean; // 该节点当前是否被选中(用于按需启用 iframe 交互等)
     updateMetadata: (patch: CanvasNodeMetadata) => void;
     updateNode: (patch: Partial<Pick<CanvasNodeData, "title" | "width" | "height">>) => void;
     // 图访问
@@ -194,6 +195,8 @@ export type CanvasNodeDefinition = {
     minimapColor?: string;
     showInCreateMenu?: boolean; // 默认 true
     hasSourceHandle?: boolean; // 右侧输出连接点,默认 true
+    hidePanel?: boolean; // 为 true 时:点击/新建不弹出下方面板(含内置生图面板),纯展示型节点用
+    autoOpenPanel?: boolean; // 为 true 时:单击节点自动打开自定义 Panel(默认仅内置节点单击自动打开)
     keepAspectRatio?: (node: CanvasNodeData) => boolean;
     resource?: (node: CanvasNodeData) => CanvasNodeResource | null;
     // 渲染
diff --git a/web/src/components/canvas/canvas-node.tsx b/web/src/components/canvas/canvas-node.tsx
index a05afe4..62f43de 100644
--- a/web/src/components/canvas/canvas-node.tsx
+++ b/web/src/components/canvas/canvas-node.tsx
@@ -41,6 +41,7 @@ type CanvasNodeProps = {
     batchRecovering?: boolean;
     batchMotion?: { x: number; y: number; index: number };
     onMouseDown: (event: React.MouseEvent, nodeId: string) => void;
+    onSelectCapture?: (event: React.MouseEvent, nodeId: string) => void;
     onHoverStart: (nodeId: string) => void;
     onHoverEnd: (nodeId: string) => void;
     onConnectStart: (event: React.MouseEvent, nodeId: string, handleType: "source" | "target") => void;
@@ -102,6 +103,7 @@ export const CanvasNode = React.memo(function CanvasNode({
     batchRecovering = false,
     batchMotion,
     onMouseDown,
+    onSelectCapture,
     onHoverStart,
     onHoverEnd,
     onConnectStart,
@@ -118,7 +120,7 @@ export const CanvasNode = React.memo(function CanvasNode({
     const theme = canvasThemes[useThemeStore((state) => state.theme)];
     const [hovered, setHovered] = useState(false);
     const definition = getNodeDefinition(data.type);
-    const pluginContext = useMemo<CanvasNodeContext | null>(() => (pluginHost ? buildNodeContext(pluginHost, data, theme, scale) : null), [pluginHost, data, theme, scale]);
+    const pluginContext = useMemo<CanvasNodeContext | null>(() => (pluginHost ? buildNodeContext(pluginHost, data, theme, scale, isSelected) : null), [pluginHost, data, theme, scale, isSelected]);
     const [isEditingContent, setIsEditingContent] = useState(false);
     const [isEditingTitle, setIsEditingTitle] = useState(false);
     const [titleDraft, setTitleDraft] = useState(data.title || "");
@@ -301,6 +303,7 @@ export const CanvasNode = React.memo(function CanvasNode({
                 setHovered(false);
                 onHoverEnd(data.id);
             }}
+            onMouseDownCapture={(event) => onSelectCapture?.(event, data.id)}
             onContextMenu={(event) => onContextMenu(event, data.id)}
         >
             <div className="absolute left-3 top-[-28px] z-[65] max-w-[calc(100%-24px)]" onMouseDown={(event) => event.stopPropagation()} onPointerDown={(event) => event.stopPropagation()}>
diff --git a/web/src/lib/canvas/plugin-node-context.ts b/web/src/lib/canvas/plugin-node-context.ts
index b7ce7bd..b34c830 100644
--- a/web/src/lib/canvas/plugin-node-context.ts
+++ b/web/src/lib/canvas/plugin-node-context.ts
@@ -5,12 +5,13 @@ import type { CanvasNodeData } from "@/types/canvas";
 import type { CanvasNodeContext, CanvasPluginHost } from "@/types/canvas-plugin";
 
 // 把宿主能力 + 节点 + 主题/缩放,组装成注入给插件节点的上下文
-export function buildNodeContext(host: CanvasPluginHost, node: CanvasNodeData, theme: CanvasTheme, scale: number): CanvasNodeContext {
+export function buildNodeContext(host: CanvasPluginHost, node: CanvasNodeData, theme: CanvasTheme, scale: number, isSelected = false): CanvasNodeContext {
     const storage = createPluginStorage(getNodePluginId(node.type));
     return {
         node,
         theme,
         scale,
+        isSelected,
         updateMetadata: (patch) => host.updateMetadata(node.id, patch),
         updateNode: (patch) => host.updateNode(node.id, patch),
         getNode: (id) => host.getNode(id),
diff --git a/web/src/pages/canvas/project.tsx b/web/src/pages/canvas/project.tsx
index 03dbb4e..fa8e377 100644
--- a/web/src/pages/canvas/project.tsx
+++ b/web/src/pages/canvas/project.tsx
@@ -688,7 +688,10 @@ function InfiniteCanvasPage() {
     }, [collapsingBatchIds, nodes, size.height, size.width, viewport.k, viewport.x, viewport.y]);
 
     const nodeById = useMemo(() => new Map(nodes.map((node) => [node.id, node])), [nodes]);
-    const toolbarNode = toolbarNodeId ? nodeById.get(toolbarNodeId) || null : null;
+    // 工具条跟随「单选节点」:点击/新建/框选/键盘选中任一节点都会显示,不再仅靠精确点中触发。
+    // 多选时不显示;拖拽中由下方 isNodeDragging 守卫隐藏。
+    const singleSelectedNodeId = selectedNodeIds.size === 1 ? Array.from(selectedNodeIds)[0] : null;
+    const toolbarNode = (toolbarNodeId ? nodeById.get(toolbarNodeId) || null : null) || (singleSelectedNodeId ? nodeById.get(singleSelectedNodeId) || null : null);
     const infoNode = infoNodeId ? nodeById.get(infoNodeId) || null : null;
     const cropNode = cropNodeId ? nodeById.get(cropNodeId) || null : null;
     const maskEditNode = maskEditNodeId ? nodeById.get(maskEditNodeId) || null : null;
@@ -861,7 +864,10 @@ function InfiniteCanvasPage() {
             setSelectedNodeIds(new Set([newNode.id]));
             setSelectedConnectionId(null);
             const definition = getNodeDefinition(type);
-            if (definition?.Panel || (isBuiltinType(type) && type !== CanvasNodeType.Text && type !== CanvasNodeType.Audio && type !== CanvasNodeType.Group)) setDialogNodeId(newNode.id);
+            // 纯展示型插件节点(hidePanel)不弹面板;插件自定义 Panel 需显式 autoOpenPanel 才在新建时打开;
+            // 内置的图片/视频/配置类节点保持原有「新建即打开生图面板」行为。
+            const wantsPanel = definition?.hidePanel ? false : definition?.Panel ? Boolean(definition.autoOpenPanel) : isBuiltinType(type) && type !== CanvasNodeType.Text && type !== CanvasNodeType.Audio && type !== CanvasNodeType.Group;
+            if (wantsPanel) setDialogNodeId(newNode.id);
         },
         [effectiveConfig.canvasImageCount, effectiveConfig.count, effectiveConfig.imageModel, effectiveConfig.model, effectiveConfig.size, getCanvasCenter],
     );
@@ -1161,30 +1167,42 @@ function InfiniteCanvasPage() {
         [cancelPendingConnectionCreate, screenToCanvas],
     );
 
-    const handleNodeMouseDown = useCallback((event: ReactMouseEvent, nodeId: string) => {
-        event.stopPropagation();
-        setContextMenu(null);
-        setHoveredNodeId(null);
-        setToolbarNodeId(null);
-        setSelectedConnectionId(null);
-
-        const currentSelected = selectedNodeIdsRef.current;
-        const currentNodes = nodesRef.current;
-        const nextSelected = new Set(currentSelected);
-
+    // 仅处理「选中」的纯逻辑,供 body 冒泡拖拽入口与外层 capture 入口共用。
+    // 返回本次点击后的单选目标 id(多选/取消时为 null),用于同步工具条。
+    const selectNodeByEvent = useCallback((event: Pick<ReactMouseEvent, "shiftKey" | "metaKey" | "ctrlKey">, nodeId: string) => {
+        const nextSelected = new Set(selectedNodeIdsRef.current);
         if (event.shiftKey || event.metaKey || event.ctrlKey) {
-            if (nextSelected.has(nodeId)) {
-                nextSelected.delete(nodeId);
-            } else {
-                nextSelected.add(nodeId);
-            }
+            if (nextSelected.has(nodeId)) nextSelected.delete(nodeId);
+            else nextSelected.add(nodeId);
         } else if (!nextSelected.has(nodeId)) {
             nextSelected.clear();
             nextSelected.add(nodeId);
         }
-
         setSelectedNodeIds(nextSelected);
-        setToolbarNodeId(nextSelected.size === 1 && nextSelected.has(nodeId) ? nodeId : null);
+        const soloId = nextSelected.size === 1 && nextSelected.has(nodeId) ? nodeId : null;
+        setToolbarNodeId(soloId);
+        return { nextSelected, soloId };
+    }, []);
+
+    // capture 阶段选中:点击节点内部任意元素(含吞掉 mousedown 的 textarea/iframe)都能选中并弹出工具条。
+    // 只做选中,不启动拖拽 —— 拖拽仍由 body 的 onMouseDown(冒泡)负责,故编辑器内选词不会拖动节点。
+    // capture 必先于同一次事件的 body 冒泡触发,故把算好的选中集暂存,供紧随其后的拖拽入口复用,避免二次选中(shift 反选被抵消)。
+    const pendingSelectionRef = useRef<Set<string> | null>(null);
+    const handleNodeSelectCapture = useCallback((event: ReactMouseEvent, nodeId: string) => {
+        if (event.button !== 0) return;
+        setContextMenu(null);
+        setHoveredNodeId(null);
+        setSelectedConnectionId(null);
+        const { nextSelected } = selectNodeByEvent(event, nodeId);
+        pendingSelectionRef.current = nextSelected;
+    }, [selectNodeByEvent]);
+
+    const handleNodeMouseDown = useCallback((event: ReactMouseEvent, nodeId: string) => {
+        event.stopPropagation();
+        // 选中已由 capture 阶段完成;这里只负责建立拖拽。若因故没走 capture,则兜底再选一次。
+        const currentNodes = nodesRef.current;
+        const nextSelected = pendingSelectionRef.current ?? selectNodeByEvent(event, nodeId).nextSelected;
+        pendingSelectionRef.current = null;
         const dragIds = new Set(nextSelected);
         currentNodes.forEach((node) => {
             if (!nextSelected.has(node.id)) return;
@@ -1248,8 +1266,12 @@ function InfiniteCanvasPage() {
         dragRef.current.initialSelectedNodes = [];
         if (wasClick && clickedNodeId) {
             const clickedNode = nodesRef.current.find((node) => node.id === clickedNodeId);
+            const clickedDefinition = clickedNode ? getNodeDefinition(clickedNode.type) : undefined;
             if (clickedNode?.type === CanvasNodeType.Text) {
                 setDialogNodeId((current) => (current === clickedNodeId ? current : null));
+            } else if (clickedDefinition?.hidePanel) {
+                // 纯展示型插件节点:单击只选中,不弹下方面板
+                setDialogNodeId((current) => (current === clickedNodeId ? current : null));
             } else if (clickedNode?.type !== CanvasNodeType.Group) {
                 setDialogNodeId(clickedNodeId);
             }
@@ -2659,7 +2681,7 @@ function InfiniteCanvasPage() {
                             isConnectionTarget={connectionTargetNodeId === node.id}
                             isConnecting={Boolean(connectingParams)}
                             editRequestNonce={editingNodeId === node.id ? editRequestNonce : 0}
-                            showPanel={dialogNodeId === node.id && !selectionBox}
+                            showPanel={dialogNodeId === node.id && !selectionBox && !getNodeDefinition(node.type)?.hidePanel}
                             batchCount={batchChildCountById.get(node.id) || 0}
                             groupChildCount={groupChildCountById.get(node.id) || 0}
                             isGroupDropTarget={dropTargetGroupId === node.id}
@@ -2714,6 +2736,7 @@ function InfiniteCanvasPage() {
                                 />
                             )}
                             onMouseDown={handleNodeMouseDown}
+                            onSelectCapture={handleNodeSelectCapture}
                             onHoverStart={(nodeId) => {
                                 if (nodeDraggingRef.current) return;
                                 setHoveredNodeId(nodeId);
diff --git a/web/src/types/canvas-plugin.ts b/web/src/types/canvas-plugin.ts
index 57f729b..6859f7e 100644
--- a/web/src/types/canvas-plugin.ts
+++ b/web/src/types/canvas-plugin.ts
@@ -24,6 +24,7 @@ export type CanvasNodeContext = {
     node: CanvasNodeData;
     theme: CanvasTheme;
     scale: number;
+    isSelected: boolean; // 该节点当前是否被选中(用于按需启用 iframe 交互等)
     // 自身数据
     updateMetadata: (patch: CanvasNodeMetadata) => void;
     updateNode: (patch: Partial<Pick<CanvasNodeData, "title" | "width" | "height">>) => void;
@@ -71,6 +72,8 @@ export type CanvasNodeDefinition = {
     minimapColor?: string;
     showInCreateMenu?: boolean; // 默认 true
     hasSourceHandle?: boolean; // 右侧输出连接点,默认 true
+    hidePanel?: boolean; // 为 true 时:点击/新建不弹出下方面板(含内置生图面板),纯展示型节点用
+    autoOpenPanel?: boolean; // 为 true 时:单击节点自动打开自定义 Panel(默认仅内置节点单击自动打开)
     keepAspectRatio?: (node: CanvasNodeData) => boolean;
     resource?: (node: CanvasNodeData) => CanvasNodeResource | null;
     // 渲染:内置节点由 canvas-node 内部渲染器负责,可不提供 Content