site-builder: dynamic CTAs, section anchors, edit-with-Sitesmith

Three related features:

1. Dynamic CTA buttons on HeroSimple, CTASection, CallToAction.
   New shared ctas[] array (text + href + variant + target) replaces the
   primary/secondary pair. Settings panel gets add/remove/reorder controls.
   Legacy fields stay readable for backwards compat — first user edit
   migrates the section onto the new array.

2. Anchor IDs on all layout/section components (Container, Section,
   BackgroundSection, ColumnLayout, plus 6 section blocks done by parallel
   subagent, plus Hero/CTA/CallToAction). Anchor input lives in the
   settings panel with an "auto from heading" button that walks the
   subtree for the first Heading.text. Renders as id="..." on the
   outermost element so #anchor URLs resolve.

3. Edit-with-Sitesmith targeted invocation. Right-click → "Ask Sitesmith"
   and a button at the top of the right-side settings panel both open the
   modal pre-targeted at the selected node. The node's serialized subtree
   is sent to the server; system prompt is augmented to require a patch
   with replace_node. Editor lifts modal state into a new SitesmithContext.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

craft/src/components/sections/Tabs.tsx

@@ -1,6 +1,7 @@
 import React, { CSSProperties, useState } from 'react';
 import { useNode, UserComponent } from '@craftjs/core';
 import { cssPropsToString } from '../../utils/style-helpers';
+import { AnchorIdField } from '../../ui/AnchorIdField';
 
 interface TabItem {
   label: string;
@@ -15,6 +16,7 @@ interface TabsProps {
   inactiveTabBg?: string;
   inactiveTabColor?: string;
   contentBg?: string;
+  anchorId?: string;
 }
 
 const defaultTabs: TabItem[] = [
@@ -31,6 +33,7 @@ export const Tabs: UserComponent<TabsProps> = ({
   inactiveTabBg = '#f1f5f9',
   inactiveTabColor = '#64748b',
   contentBg = '#ffffff',
+  anchorId,
 }) => {
   const {
     connectors: { connect, drag },
@@ -44,6 +47,7 @@ export const Tabs: UserComponent<TabsProps> = ({
   return (
     <section
       ref={(ref: HTMLElement | null): void => { if (ref) connect(drag(ref)); }}
+      id={anchorId || undefined}
       style={{
         padding: '60px 20px',
         backgroundColor: '#ffffff',
@@ -139,6 +143,7 @@ const TabsSettings: React.FC = () => {
 
   return (
     <div style={{ padding: '12px', display: 'flex', flexDirection: 'column', gap: '14px' }}>
+      <AnchorIdField />
       <div>
         <label style={labelStyle}>Active Tab Background</label>
         <div style={{ display: 'flex', gap: 4, flexWrap: 'wrap' }}>
@@ -276,6 +281,7 @@ Tabs.craft = {
     inactiveTabBg: '#f1f5f9',
     inactiveTabColor: '#64748b',
     contentBg: '#ffffff',
+    anchorId: '',
   },
   rules: {
     canDrag: () => true,
@@ -290,11 +296,12 @@ Tabs.craft = {
 /* ---------- HTML export ---------- */
 
 (Tabs as any).toHtml = (props: TabsProps, _childrenHtml: string) => {
-  const esc = (s: any) => String(s ?? "").replace(/</g, '&lt;').replace(/>/g, '&gt;');
+  const esc = (s: any) => String(s ?? "").replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;');
   const sectionStyle = cssPropsToString({
     padding: '60px 20px',
     ...props.style,
   });
+  const idAttr = props.anchorId ? ` id="${esc(props.anchorId)}"` : '';
   const tabs = props.tabs || defaultTabs;
   const activeTabBg = props.activeTabBg || '#3b82f6';
   const activeTabColor = props.activeTabColor || '#ffffff';
@@ -326,7 +333,7 @@ function ${tabId}_switch(idx){
 </script>`;
 
   return {
-    html: `<section${sectionStyle ? ` style="${sectionStyle}"` : ''}>
+    html: `<section${idAttr}${sectionStyle ? ` style="${sectionStyle}"` : ''}>
   <div style="max-width:800px;margin:0 auto">
     <div style="display:flex;gap:2px;border-bottom:2px solid #e2e8f0">
       ${tabButtons}