Remove unused clipboard functions

src/main.ts

@@ -671,74 +671,6 @@ class MotifApp {
     this.status.textContent = message;
   }
 
-  private cleanTitleForShare(title: string): string {
-    return (title || '')
-      .replace(/\.mid$/i, '')
-      .replace(/_/g, ' ')
-      .replace(/\s+/g, ' ')
-      .trim()
-      .slice(0, 200);
-  }
-
-  private async copyToClipboard(text: string): Promise<void> {
-    // Try modern clipboard API first
-    if (navigator.clipboard?.writeText) {
-      try {
-        await navigator.clipboard.writeText(text);
-        return;
-      } catch {
-        // Fall through to textarea method
-      }
-    }
-
-    // Fallback for iOS Safari and older browsers
-    const ta = document.createElement('textarea');
-    ta.value = text;
-    ta.style.position = 'fixed';
-    ta.style.top = '0';
-    ta.style.left = '0';
-    ta.style.width = '2em';
-    ta.style.height = '2em';
-    ta.style.padding = '0';
-    ta.style.border = 'none';
-    ta.style.outline = 'none';
-    ta.style.boxShadow = 'none';
-    ta.style.background = 'transparent';
-    ta.style.fontSize = '16px'; // Prevent zoom on iOS
-    ta.setAttribute('readonly', '');
-    document.body.appendChild(ta);
-
-    // iOS needs special handling
-    const isiOS = /ipad|iphone|ipod/i.test(navigator.userAgent);
-    if (isiOS) {
-      ta.contentEditable = 'true';
-      ta.readOnly = false;
-      const range = document.createRange();
-      range.selectNodeContents(ta);
-      const sel = window.getSelection();
-      if (sel) {
-        sel.removeAllRanges();
-        sel.addRange(range);
-      }
-      ta.setSelectionRange(0, 999999);
-    } else {
-      ta.select();
-    }
-
-    let success = false;
-    try {
-      success = document.execCommand('copy');
-    } catch {
-      // ignore
-    }
-
-    document.body.removeChild(ta);
-
-    if (!success) {
-      throw new Error('Copy failed');
-    }
-  }
-
   private handleCopyLink(): void {
     if (!this.hasGenerated) return;
     const result = this.searchResults[this.selectedResultIndex];