Add Edge extension and update release workflow

Add a complete Edge extension under edge/ (manifest, popup, CSS, JS, locales, assets, LICENSE) and a change.log. Update README with Edge/mobile notes and simplify content. Update GitHub Actions workflow to read edge/manifest.json version, package Edge builds, and include Edge asset in the release summary (also bump default release_tag). Minor update to firefox/js/oper.js and include .DS_Store change.

firefox/js/oper.js

@@ -44,6 +44,7 @@ function initProportionalEditorResize() {
     const nonEditorHeight = Math.max(0, Math.ceil(document.body.scrollHeight - initialRect.height))
     let maxScale = 1
     let currentScale = 1
+    let nextScale = 1
     let dragging = false
     let dragStartX = 0
     let dragStartY = 0
@@ -54,8 +55,21 @@ function initProportionalEditorResize() {
       return Math.min(Math.max(scale, 1), maxScale)
     }
 
+    const showPreviewScale = (scale) => {
+      const previewScale = clampScale(scale)
+      const relativeScale = previewScale / currentScale
+      editor.style.transformOrigin = 'top left'
+      editor.style.transform = `scale(${relativeScale})`
+    }
+
+    const clearPreviewScale = () => {
+      editor.style.transform = ''
+      editor.style.transformOrigin = ''
+    }
+
     const applyScale = (scale) => {
       currentScale = clampScale(scale)
+      nextScale = currentScale
       editor.style.width = `${Math.round(baseW * currentScale)}px`
       editor.style.height = `${Math.round(baseH * currentScale)}px`
     }
@@ -75,6 +89,7 @@ function initProportionalEditorResize() {
     }
 
     const computeMaxScale = () => {
+      if (dragging) return
       // In popup mode, allow scaling up to Chrome's max popup size.
       // Do not clamp by current window.innerWidth/innerHeight, otherwise the popup can't grow to the max.
       const viewportW = 800
@@ -94,6 +109,9 @@ function initProportionalEditorResize() {
       if (!dragging) return
       dragging = false
       handle.classList.remove('dragging')
+      clearPreviewScale()
+      applyScale(nextScale)
+      computeMaxScale()
       persistScale()
     }
 
@@ -103,7 +121,8 @@ function initProportionalEditorResize() {
       const dy = ev.clientY - dragStartY
       const widthScale = (baseW * dragStartScale + dx) / baseW
       const heightScale = (baseH * dragStartScale + dy) / baseH
-      applyScale(Math.max(widthScale, heightScale))
+      nextScale = clampScale(Math.max(widthScale, heightScale))
+      showPreviewScale(nextScale)
     }
 
     const startDrag = (ev) => {
@@ -112,6 +131,8 @@ function initProportionalEditorResize() {
       dragStartX = ev.clientX
       dragStartY = ev.clientY
       dragStartScale = currentScale
+      nextScale = currentScale
+      showPreviewScale(currentScale)
       handle.classList.add('dragging')
       if (typeof handle.setPointerCapture === 'function') {
         try {
@@ -209,6 +230,10 @@ function updateLockNowText(lockType) {
   }
 }
 
+function showRandomList(content) {
+  $('#randomlist').stop(true, true).html(content).show()
+}
+
 applyDayjsLocaleByUiLanguage(typeof window.getUiLanguage === 'function' ? window.getUiLanguage() : 'auto')
 
 if (isFullscreenMode()) {
@@ -994,7 +1019,7 @@ $('#search').click(function () {
               searchDom += '</div>'
             }
             window.ViewImage && ViewImage.init('.random-image')
-            $("#randomlist").html(searchDom).slideDown(500);
+            showRandomList(searchDom)
             hydrateV1PreviewImages(info)
           }
         },
@@ -1073,7 +1098,7 @@ function randDom(randomData){
   }
   randomDom += '</div>'
   window.ViewImage && ViewImage.init('.random-image')
-  $("#randomlist").html(randomDom).slideDown(500);
+  showRandomList(randomDom)
   hydrateV1PreviewImages(info)
   })
 }