feat(media): Embed Google Photo Picker via Popup Flow

- Revert 'Unified Embedded Picker' which caused 403 errors due to iframe restrictions on the Google Photos Picker.
- Implement a 'Popup Window' flow for Google Photos selections, keeping the Media Manager active.
- Restore 'Classic' Embedded Picker for Google Drive (DocsView) as it is compatible with iframes.
- Update ppsscript.json with drive.photos.readonly scope for correct permissions.
- Update Media Manager UI to separate Drive and Photos buttons.

src/MediaManager.html

@@ -404,6 +404,8 @@
       <div id="photos-session-status" style="font-size:11px; color:#64748b; text-align:center;">Initializing...</div>
     </div>
 
+
+
     <div class="card" style="padding-bottom: 0;">
       <div class="header" style="margin-bottom:8px; display:flex; justify-content:space-between; align-items:center;">
         <div style="display:flex; align-items:baseline; gap:12px;">
@@ -698,6 +700,44 @@
         this.saveBtn.innerText = enable ? "Save Changes" : "No Changes";
     };
 
+          UI.prototype.showPhotoSession = function (url) {
+            var uiEl = document.getElementById('photos-session-ui');
+            var link = document.getElementById('photos-session-link');
+            var status = document.getElementById('photos-session-status');
+
+            uiEl.style.display = 'block';
+            link.href = url;
+            // We also open it automatically in a popup
+            const width = 1200;
+            const height = 800;
+            const left = (screen.width - width) / 2;
+            const top = (screen.height - height) / 2;
+
+            // Attempt popup
+            const popup = window.open(url, 'googlePhotos', `width=${width},height=${height},top=${top},left=${left}`);
+
+            if (popup) {
+              link.innerText = "Re-open Popup ↗";
+              link.onclick = function (e) {
+                e.preventDefault();
+                window.open(url, 'googlePhotos', `width=${width},height=${height},top=${top},left=${left}`);
+              }
+            } else {
+              link.innerText = "Open Google Photos ↗";
+              link.onclick = null; // Default href behavior
+            }
+
+            status.innerText = "Waiting for selection in popup...";
+          };
+
+          UI.prototype.closePhotoSession = function () {
+            document.getElementById('photos-session-ui').style.display = 'none';
+          };
+
+          UI.prototype.updatePhotoStatus = function (msg) {
+            document.getElementById('photos-session-status').innerText = msg;
+          };
+
       UI.prototype.render = function (items) {
         this.grid.innerHTML = '';
       var _this = this; // Capture 'this' for callbacks
@@ -900,25 +940,6 @@
         document.getElementById('details-modal').style.display = 'none';
     };
 
-      UI.prototype.showPhotoSession = function (url) {
-        var uiEl = document.getElementById('photos-session-ui');
-        var link = document.getElementById('photos-session-link');
-        var status = document.getElementById('photos-session-status');
-
-      uiEl.style.display = 'block';
-      link.href = url;
-      link.style.display = 'block';
-      status.innerText = "Waiting for selection...";
-    };
-
-      UI.prototype.closePhotoSession = function () {
-        document.getElementById('photos-session-ui').style.display = 'none';
-    };
-
-      UI.prototype.updatePhotoStatus = function (msg) {
-        document.getElementById('photos-session-status').innerText = msg;
-    };
-
       var ui = new UI();
       window.ui = ui;
 
@@ -1104,6 +1125,7 @@
           });
           },
 
+          // --- Picker ---
           // --- Picker ---
           openPicker() {
             if (!pickerApiLoaded) return alert("API Loading...");
@@ -1116,7 +1138,7 @@
               .importFromPicker(state.sku, fileId, mime, name, url);
           },
 
-                // --- Photos ---
+          // --- Photos (Popup Flow) ---
           startPhotoSession() {
             ui.updatePhotoStatus("Starting session...");
             google.script.run
@@ -1165,7 +1187,11 @@
             });
           },
 
+          // --- Legacy Photos Session (Removed in favor of Embedded Picker) ---
+          // startPhotoSession() { ... }
+
           // --- Compatibility / Matching Logic ---
+
           matches: [],
           currentMatchIndex: 0,
           hasRunMatching: false,
@@ -1319,18 +1345,20 @@
               .setMimeTypes("image/png,image/jpeg,image/jpg,video/mp4")
               .setIncludeFolders(true)
               .setSelectFolderEnabled(false);
-                        const photosView = new google.picker.PhotosView();
 
-                      new google.picker.PickerBuilder()
-                        .addView(view)
-                        .addView(photosView)
+          const builder = new google.picker.PickerBuilder();
+
+          builder.addView(view)
             .setOAuthToken(config.token)
             .setDeveloperKey(config.apiKey)
+          .setOrigin(window.location.protocol + '//' + window.location.host)
           .setCallback(data => {
             if (data.action == google.picker.Action.PICKED) {
               const doc = data.docs[0];
-                            const url = (doc.thumbnails && doc.thumbnails.length > 0) ? doc.thumbnails[doc.thumbnails.length - 1].url : null;
-                            controller.importFromPicker(doc.id, doc.mimeType, doc.name, url);
+            const isDrive = doc.serviceId === 'docs';
+
+            // Drive File (Always, since we removed Photos view)
+            controller.importFromPicker(doc.id, doc.mimeType, doc.name, null);
           }
         })
           .build()

src/appsscript.json

@@ -18,6 +18,7 @@
     "https://www.googleapis.com/auth/script.scriptapp",
     "https://www.googleapis.com/auth/drive",
     "https://www.googleapis.com/auth/userinfo.email",
-    "https://www.googleapis.com/auth/photospicker.mediaitems.readonly"
+    "https://www.googleapis.com/auth/photospicker.mediaitems.readonly",
+    "https://www.googleapis.com/auth/drive.photos.readonly"
   ]
 }