feat(special-editor): add manual save button with unsaved changes indicator

app/admin/specials/[id]/page.tsx

@@ -36,6 +36,8 @@ export default function SpecialEditorPage() {
     const [selectedSongId, setSelectedSongId] = useState<number | null>(null);
     const [loading, setLoading] = useState(true);
     const [saving, setSaving] = useState(false);
+    const [pendingStartTime, setPendingStartTime] = useState<number | null>(null);
+    const [hasUnsavedChanges, setHasUnsavedChanges] = useState(false);
 
     useEffect(() => {
         fetchSpecial();
@@ -49,6 +51,8 @@ export default function SpecialEditorPage() {
                 setSpecial(data);
                 if (data.songs.length > 0) {
                     setSelectedSongId(data.songs[0].songId);
+                    // Initialize pendingStartTime with the current startTime of the first song
+                    setPendingStartTime(data.songs[0].startTime);
                 }
             }
         } catch (error) {
@@ -58,15 +62,20 @@ export default function SpecialEditorPage() {
         }
     };
 
-    const handleStartTimeChange = async (songId: number, newStartTime: number) => {
-        if (!special) return;
+    const handleStartTimeChange = (newStartTime: number) => {
+        setPendingStartTime(newStartTime);
+        setHasUnsavedChanges(true);
+    };
+
+    const handleSave = async () => {
+        if (!special || !selectedSongId || pendingStartTime === null) return;
 
         setSaving(true);
         try {
             const res = await fetch(`/api/specials/${specialId}/songs`, {
                 method: 'PUT',
                 headers: { 'Content-Type': 'application/json' },
-                body: JSON.stringify({ songId, startTime: newStartTime })
+                body: JSON.stringify({ songId: selectedSongId, startTime: pendingStartTime })
             });
 
             if (res.ok) {
@@ -76,10 +85,12 @@ export default function SpecialEditorPage() {
                     return {
                         ...prev,
                         songs: prev.songs.map(ss =>
-                            ss.songId === songId ? { ...ss, startTime: newStartTime } : ss
+                            ss.songId === selectedSongId ? { ...ss, startTime: pendingStartTime } : ss
                         )
                     };
                 });
+                setHasUnsavedChanges(false);
+                setPendingStartTime(null); // Reset pending state after saving
             }
         } catch (error) {
             console.error('Error updating start time:', error);
@@ -176,21 +187,35 @@ export default function SpecialEditorPage() {
                                 Curate: {selectedSpecialSong.song.title}
                             </h2>
                             <div style={{ background: '#f9fafb', padding: '1.5rem', borderRadius: '0.5rem' }}>
-                                <p style={{ fontSize: '0.875rem', color: '#666', marginBottom: '1rem' }}>
-                                    Click on the waveform to select where the puzzle should start. The highlighted region shows what players will hear.
-                                </p>
+                                <div style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center', marginBottom: '1rem' }}>
+                                    <p style={{ fontSize: '0.875rem', color: '#666', margin: 0 }}>
+                                        Click on the waveform to select where the puzzle should start. The highlighted region shows what players will hear.
+                                    </p>
+                                    <button
+                                        onClick={handleSave}
+                                        disabled={!hasUnsavedChanges || saving}
+                                        style={{
+                                            padding: '0.5rem 1.5rem',
+                                            background: hasUnsavedChanges ? '#10b981' : '#e5e7eb',
+                                            color: hasUnsavedChanges ? 'white' : '#9ca3af',
+                                            border: 'none',
+                                            borderRadius: '0.5rem',
+                                            cursor: hasUnsavedChanges && !saving ? 'pointer' : 'not-allowed',
+                                            fontWeight: 'bold',
+                                            fontSize: '0.875rem',
+                                            whiteSpace: 'nowrap'
+                                        }}
+                                    >
+                                        {saving ? '💾 Saving...' : hasUnsavedChanges ? '💾 Save Changes' : '✓ Saved'}
+                                    </button>
+                                </div>
                                 <WaveformEditor
                                     audioUrl={`/uploads/${selectedSpecialSong.song.filename}`}
-                                    startTime={selectedSpecialSong.startTime}
+                                    startTime={pendingStartTime ?? selectedSpecialSong.startTime}
                                     duration={totalDuration}
                                     unlockSteps={unlockSteps}
-                                    onStartTimeChange={(newStartTime) => handleStartTimeChange(selectedSpecialSong.songId, newStartTime)}
+                                    onStartTimeChange={handleStartTimeChange}
                                 />
-                                {saving && (
-                                    <div style={{ marginTop: '1rem', color: '#4f46e5', fontSize: '0.875rem' }}>
-                                        Saving...
-                                    </div>
-                                )}
                             </div>
                         </div>
                     )}