feat(builder): media package -- image crop/perf, video size+picker, gallery cols/lightbox, box-model+anim/vis rollout

- ImageBlock/ImageStylePanel: SizeControl width(absorbs old maxWidth
  presets)/height, AspectRatioControl + OBJECT_FIT grid + FocalPointGrid for
  CSS framing crop (aspect-ratio/object-fit/object-position on the <img>).
  Exported <img> always gets loading="lazy" decoding="async", plus width/
  height attrs when the style has a plain px length (pxAttr helper).
- VideoBlock/MediaStylePanel: Video URL text input replaced with
  AssetPicker(mediaType="video") writing videoUrl (paste-URL still handles
  YouTube/Vimeo, upload/browse handle files). Added SizeControl(width) +
  AspectRatioControl so the video frame honors real size/aspect instead of
  a hardcoded 16:9 (padding-bottom hack replaced with CSS aspect-ratio).
  New optional `poster` prop (image AssetPicker) + preload="metadata" on
  file-type <video>.
- Gallery: surfaced the existing-but-unexposed `columns` and `lightbox`
  props with panel controls.
- All 5 owned components (ImageBlock, VideoBlock, Gallery, ContentSlider,
  MapEmbed): added margin/padding (per-side)/border/box-shadow/opacity style
  defaults + AnimationControl/VisibilityControl-backed animation/
  animationDelay/hideOnDesktop/hideOnTablet/hideOnMobile props. New shared
  mediaBoxModel.tsx (package-local, not shared.tsx) DRYs the box-model +
  border/effects + animation/visibility panel sections across
  ImageStylePanel and MediaStylePanel.
- Tests: extended *.toHtml.test.ts for all 5 components (crop/perf attrs,
  video size/aspect/poster/preload, gallery columns/lightbox, box-model
  style emission, craft.props presence) + new MediaStylePanel.video.test.tsx
  verifying the AssetPicker wiring writes videoUrl/poster and the video-only
  size controls are gated on videoUrl. 694 tests green, tsc + vite build
  clean.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

craft/src/panels/right/styles/MediaStylePanel.tsx

@@ -2,7 +2,6 @@ import React from 'react';
 import { useEditor } from '@craftjs/core';
 import {
   BG_COLORS,
-  SPACING_PRESETS,
   RADIUS_PRESETS,
 } from '../../../constants/presets';
 import {
@@ -13,6 +12,8 @@ import {
   CollapsibleSection,
   ColorPickerField,
   ArrayPropEditor,
+  SizeControl,
+  AspectRatioControl,
   labelStyle,
   inputStyle,
   smallInputStyle,
@@ -20,6 +21,14 @@ import {
   useNodeProp,
 } from './shared';
 import { AssetPicker } from '../../../ui/AssetPicker';
+import { BoxModelSection, BorderEffectsSection, AnimVisSection } from './mediaBoxModel';
+
+const GALLERY_COLUMN_PRESETS = [
+  { label: '2', value: '2' },
+  { label: '3', value: '3' },
+  { label: '4', value: '4' },
+  { label: '5', value: '5' },
+];
 
 /* ---------- MEDIA (Video / Gallery / Map / Slider) ---------- */
 export const MediaStylePanel: React.FC<StylePanelProps> = ({ selectedId, nodeProps }) => {
@@ -30,11 +39,48 @@ export const MediaStylePanel: React.FC<StylePanelProps> = ({ selectedId, nodePro
 
   return (
     <>
-      {/* Video URL */}
+      {/* Video source -- upload/browse/paste-URL (paste-URL still handles
+          YouTube/Vimeo; upload/browse handle files via detectVideoType's
+          serve_asset resolution). */}
       {nodeProps.videoUrl !== undefined && (
-        <div style={sectionGap}>
-          <label style={labelStyle}>Video URL</label>
-          <input type="text" value={nodeProps.videoUrl || ''} onChange={(e) => setProp('videoUrl', e.target.value)} placeholder="YouTube, Vimeo, or .mp4 URL" style={inputStyle} />
+        <div className="guided-section">
+          <SectionLabel>Video Source</SectionLabel>
+          <AssetPicker
+            mediaType="video"
+            value={nodeProps.videoUrl || ''}
+            onChange={(url) => setProp('videoUrl', url)}
+            variant="full"
+            placeholder="Or paste a YouTube/Vimeo/.mp4 URL..."
+          />
+        </div>
+      )}
+
+      {/* Video size -- width + aspect ratio for the video frame. */}
+      {nodeProps.videoUrl !== undefined && (
+        <>
+          <SizeControl
+            label="Width"
+            value={(style.width as string) || ''}
+            onChange={(v) => setPropStyle('width', v)}
+          />
+          <AspectRatioControl
+            value={(style.aspectRatio as string) || ''}
+            onChange={(v) => setPropStyle('aspectRatio', v)}
+          />
+        </>
+      )}
+
+      {/* Poster image (optional, file-type videos only in practice but
+          harmless to offer whenever the component has a poster prop). */}
+      {nodeProps.poster !== undefined && (
+        <div className="guided-section">
+          <SectionLabel>Poster Image (optional)</SectionLabel>
+          <AssetPicker
+            mediaType="image"
+            value={nodeProps.poster || ''}
+            onChange={(url) => setProp('poster', url)}
+            variant="full"
+          />
         </div>
       )}
 
@@ -80,6 +126,26 @@ export const MediaStylePanel: React.FC<StylePanelProps> = ({ selectedId, nodePro
         </div>
       )}
 
+      {/* Gallery layout -- columns + lightbox (existing-but-previously-unexposed props). */}
+      {nodeProps.images !== undefined && Array.isArray(nodeProps.images) && (
+        <>
+          <div className="guided-section">
+            <SectionLabel>Columns</SectionLabel>
+            <PresetButtonGrid
+              presets={GALLERY_COLUMN_PRESETS}
+              activeValue={String(nodeProps.columns ?? 3)}
+              onSelect={(v) => setProp('columns', Number(v))}
+            />
+          </div>
+          <div style={sectionGap}>
+            <label style={{ ...labelStyle, display: 'flex', alignItems: 'center', gap: 6, cursor: 'pointer' }}>
+              <input type="checkbox" checked={!!nodeProps.lightbox} onChange={(e) => setProp('lightbox', e.target.checked)} />
+              Enable Lightbox
+            </label>
+          </div>
+        </>
+      )}
+
       {/* Gallery items */}
       {nodeProps.images !== undefined && Array.isArray(nodeProps.images) && (
         <CollapsibleSection title="Images">
@@ -178,21 +244,23 @@ export const MediaStylePanel: React.FC<StylePanelProps> = ({ selectedId, nodePro
         </CollapsibleSection>
       )}
 
-      {/* Background & padding */}
+      {/* Background & radius */}
       <CollapsibleSection title="Style" defaultOpen={false}>
         <div className="guided-section">
           <SectionLabel>Background</SectionLabel>
           <ColorSwatchGrid colors={BG_COLORS} activeValue={style.backgroundColor} onSelect={(v: string) => setPropStyle('backgroundColor', v)} />
         </div>
-        <div className="guided-section">
-          <SectionLabel>Padding</SectionLabel>
-          <PresetButtonGrid presets={SPACING_PRESETS} activeValue={style.padding as string} onSelect={(v) => setPropStyle('padding', v)} />
-        </div>
         <div className="guided-section">
           <SectionLabel>Border Radius</SectionLabel>
           <PresetButtonGrid presets={RADIUS_PRESETS} activeValue={style.borderRadius as string} onSelect={(v) => setPropStyle('borderRadius', v)} />
         </div>
       </CollapsibleSection>
+
+      {/* Box model + animation/visibility rollout (Video/Gallery/Map/Slider
+          all carry these props now, so it's safe to render unconditionally). */}
+      <BoxModelSection style={style} setPropStyle={setPropStyle} />
+      <BorderEffectsSection style={style} setPropStyle={setPropStyle} />
+      <AnimVisSection nodeProps={nodeProps} setProp={setProp} />
     </>
   );
 };