feat: add custom image prompt support and keyboard shortcuts

- Add text area next to image display for custom image generation prompts
- Users can specify their own prompts or leave empty for auto-generation
- Display the used prompt in the text area after generation
- Load prompts from attribution files when navigating to existing cards
- Add keyboard shortcuts for all GUI buttons:
  - G: Generate, N: New Word, I: Regenerate Image, A: Regenerate Audio
  - R: Regenerate All, D: Delete, P: Play audio
  - Left/Right arrows: Navigate between words
  - Y/N: Confirm/cancel delete dialog
- Update UI layout with equal 50/50 split between image and prompt
- Enable text wrapping in prompt text area
- Add 25% chance to ask OpenAI for creative photo style suggestions
- Fix concurrent processing to properly use custom prompts

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

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

1 files changed, 11 insertions, 4 deletions

diff --git a/internal/gui/audio_player.go b/internal/gui/audio_player.go
index 161c635..2d4b2da 100644
--- a/internal/gui/audio_player.go
+++ b/internal/gui/audio_player.go
@@ -31,7 +31,7 @@ func NewAudioPlayer() *AudioPlayer {
 	p := &AudioPlayer{}
 	
 	// Create controls
-	p.playButton = widget.NewButton("▶ Play", p.onPlay)
+	p.playButton = widget.NewButton("▶ Play (P)", p.onPlay)
 	p.stopButton = widget.NewButton("■ Stop", p.onStop)
 	p.statusLabel = widget.NewLabel("No audio loaded")
 	
@@ -98,7 +98,7 @@ func (p *AudioPlayer) onPlay() {
 	}
 	
 	p.isPlaying = true
-	p.playButton.SetText("⏸ Pause")
+	p.playButton.SetText("⏸ Pause (P)")
 	p.stopButton.Enable()
 	p.statusLabel.SetText("Playing: " + filepath.Base(p.audioFile))
 }
@@ -111,11 +111,18 @@ func (p *AudioPlayer) onStop() {
 	}
 	
 	p.isPlaying = false
-	p.playButton.SetText("▶ Play")
+	p.playButton.SetText("▶ Play (P)")
 	p.stopButton.Disable()
 	p.statusLabel.SetText("Stopped: " + filepath.Base(p.audioFile))
 }
 
+// Play triggers audio playback
+func (p *AudioPlayer) Play() {
+	if !p.playButton.Disabled() {
+		p.onPlay()
+	}
+}
+
 // startPlayback starts audio playback using platform-specific commands
 func (p *AudioPlayer) startPlayback() error {
 	var cmd *exec.Cmd
@@ -157,7 +164,7 @@ func (p *AudioPlayer) startPlayback() error {
 			// Playback finished normally
 			fyne.Do(func() {
 				p.isPlaying = false
-				p.playButton.SetText("▶ Play")
+				p.playButton.SetText("▶ Play (P)")
 				p.stopButton.Disable()
 				p.statusLabel.SetText("Finished: " + filepath.Base(p.audioFile))
 			})