feat(rsplat): default to image upload tab + clickable drop area

- Default upload mode is now "Generate from Image" instead of splat upload
- Clicking anywhere in the dotted drop area opens the file browser
  (not just the "browse" link)
- Add cursor: pointer to upload mode areas

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

modules/rsplat/components/folk-splat-viewer.ts

@@ -34,7 +34,7 @@ export class FolkSplatViewer extends HTMLElement {
   private _splatTitle = "";
   private _splatDesc = "";
   private _viewer: any = null;
-  private _uploadMode: "splat" | "generate" = "splat";
+  private _uploadMode: "splat" | "generate" = "generate";
   private _inlineViewer = false;
   private _offlineUnsub: (() => void) | null = null;
   private _generatedUrl = "";
@@ -225,12 +225,12 @@ export class FolkSplatViewer extends HTMLElement {
         <div class="splat-grid">${cards}</div>
         <div class="splat-upload" id="splat-drop">
           <div class="splat-upload__toggle">
-            <button class="splat-upload__toggle-btn active" data-mode="splat">Upload Splat</button>
-            <button class="splat-upload__toggle-btn" data-mode="generate">Generate from Image</button>
+            <button class="splat-upload__toggle-btn" data-mode="splat">Upload Splat</button>
+            <button class="splat-upload__toggle-btn active" data-mode="generate">Generate from Image</button>
           </div>
 
           <!-- Splat upload mode -->
-          <div class="splat-upload__mode" id="splat-mode-splat">
+          <div class="splat-upload__mode" id="splat-mode-splat" style="display:none">
             <div class="splat-upload__icon">📤</div>
             <p class="splat-upload__text">
               Drag &amp; drop a <strong>.ply</strong>, <strong>.splat</strong>, or <strong>.spz</strong> file here
@@ -247,7 +247,7 @@ export class FolkSplatViewer extends HTMLElement {
           </div>
 
           <!-- Generate from image mode -->
-          <div class="splat-upload__mode" id="splat-mode-generate" style="display:none">
+          <div class="splat-upload__mode" id="splat-mode-generate">
             <div class="splat-upload__icon">✨</div>
             <p class="splat-upload__text">
               Upload a single <strong>image</strong> to generate a 3D model using AI (Hunyuan3D)
@@ -462,6 +462,15 @@ export class FolkSplatViewer extends HTMLElement {
 
     browse?.addEventListener("click", () => fileInput.click());
 
+    // Make the entire dotted drop area open file browser on click
+    const generateMode = this.querySelector("#splat-mode-generate") as HTMLElement;
+    generateMode?.addEventListener("click", (e) => {
+      const target = e.target as HTMLElement;
+      // Don't trigger if clicking on buttons, inputs, or the preview image
+      if (target.closest("button, input, .splat-generate__preview, .splat-generate__progress")) return;
+      fileInput.click();
+    });
+
     fileInput.addEventListener("change", () => {
       if (fileInput.files?.[0]) {
         selectedFile = fileInput.files[0];

modules/rsplat/components/splat.css

@@ -232,6 +232,7 @@
 
 .splat-upload__mode {
   /* shown/hidden via JS display toggle */
+  cursor: pointer;
 }
 
 .splat-upload__form {