Remove redundant info box from selected card

Consolidated messaging - the chooser helper already explains MIDI selection

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

index.html

@@ -1177,10 +1177,6 @@
                 <h2 id="selectedTitle" class="selected-title">No source selected</h2>
                 <div id="selectedMeta" class="selected-meta">Search for a song, then choose a source to use.</div>
 
-                <!-- selected_pre_generate only -->
-                <div id="selectedExpectation" class="selected-meta" style="margin-top: 8px;">
-                    Some MIDI files work better than others. If the result sounds off, try another source.
-                </div>
 
                 <div class="selected-actions" id="preGenActions">
                     <button id="motifBtn" class="primary" disabled>Generate music</button>

src/main.ts

@@ -25,7 +25,6 @@ class MotifApp {
   private selectedTitle!: HTMLElement;
   private selectedMeta!: HTMLElement;
   private selectedDetails!: HTMLElement;
-  private selectedExpectation!: HTMLElement;
   private preGenActions!: HTMLElement;
   private preGenSupport!: HTMLElement;
   private generatedBlock!: HTMLElement;
@@ -116,7 +115,6 @@ class MotifApp {
     this.selectedTitle = document.getElementById('selectedTitle')!;
     this.selectedMeta = document.getElementById('selectedMeta')!;
     this.selectedDetails = document.getElementById('selectedDetails')!;
-    this.selectedExpectation = document.getElementById('selectedExpectation')!;
     this.preGenActions = document.getElementById('preGenActions')!;
     this.preGenSupport = document.getElementById('preGenSupport')!;
     this.generatedBlock = document.getElementById('generatedBlock')!;
@@ -830,7 +828,6 @@ class MotifApp {
 
     // Selected pre-generation content
     const showPreGen = state === 'selected';
-    this.selectedExpectation.style.display = showPreGen ? 'block' : 'none';
     this.preGenActions.style.display = showPreGen ? 'block' : 'none';
     this.preGenSupport.style.display = showPreGen ? 'flex' : 'none';
     this.detailsToggle.style.display = showPreGen ? 'block' : 'none';