Move scroll buttons to title bar, add build info status bar

- Replace broken bottom waveform scroll buttons with title bar < > buttons
- Add scrollLeft()/scrollRight() methods to WaveformDisplay
- Add status bar showing git branch, commit, dirty state, and build timestamp
- Inject git version info via CMake at configure time
- Enable COPY_PLUGIN_AFTER_BUILD
- Increase baseHeight by 20px for status bar

Source/WaveformDisplay.cpp

@@ -7,13 +7,6 @@ WaveformDisplay::WaveformDisplay(SliceManager& sm) : sliceManager(sm)
     hScrollBar.setRangeLimits(0.0, 1.0);
     hScrollBar.setCurrentRange(0.0, 1.0);
 
-    auto setupScrollBtn = [this](juce::TextButton& btn) {
-        addAndMakeVisible(btn);
-        btn.setColour(juce::TextButton::buttonColourId, juce::Colour(0xff2a2a4a));
-    };
-    setupScrollBtn(scrollLeftBtn);
-    setupScrollBtn(scrollRightBtn);
-
     startTimerHz(30);
 }
 
@@ -67,6 +60,22 @@ void WaveformDisplay::zoomReset()
     repaint();
 }
 
+void WaveformDisplay::scrollLeft()
+{
+    scrollOffset -= 1.0f / zoomFactor;
+    scrollOffset = juce::jlimit(0.0f, 1.0f, scrollOffset);
+    syncScrollBar();
+    repaint();
+}
+
+void WaveformDisplay::scrollRight()
+{
+    scrollOffset += 1.0f / zoomFactor;
+    scrollOffset = juce::jlimit(0.0f, 1.0f, scrollOffset);
+    syncScrollBar();
+    repaint();
+}
+
 void WaveformDisplay::syncScrollBar()
 {
     if (updatingScroll) return;
@@ -209,7 +218,6 @@ void WaveformDisplay::paint(juce::Graphics& g)
         g.setColour(juce::Colours::grey);
         g.setFont(14.0f);
         g.drawText("No audio file loaded.", textArea, juce::Justification::centred);
-        hScrollBar.setBounds(bounds.removeFromBottom(scrollbarHeight).toNearestInt());
         return;
     }
 
@@ -225,13 +233,6 @@ void WaveformDisplay::paint(juce::Graphics& g)
     auto waveArea = waveBounds.withTrimmedLeft(keyWidth);
     drawWaveform(g, waveArea);
     drawSliceMarkers(g, waveArea);
-
-    // Scrollbar at bottom
-    hScrollBar.setBounds(juce::Rectangle<int>(
-        static_cast<int>(bounds.getBottomLeft().getX()),
-        static_cast<int>(bounds.getBottom() - scrollbarHeight),
-        static_cast<int>(bounds.getWidth()),
-        static_cast<int>(scrollbarHeight)));
 }
 
 void WaveformDisplay::drawKeys(juce::Graphics& g, juce::Rectangle<float> bounds)
@@ -531,10 +532,7 @@ void WaveformDisplay::resized()
 {
     auto bounds = getLocalBounds();
     auto scrollBarRow = bounds.removeFromBottom(static_cast<int>(scrollbarHeight));
-    scrollLeftBtn.setBounds(scrollBarRow.getX(), scrollBarRow.getY(), scrollBtnWidth, scrollBarRow.getHeight());
-    scrollRightBtn.setBounds(scrollBarRow.getRight() - scrollBtnWidth, scrollBarRow.getY(), scrollBtnWidth, scrollBarRow.getHeight());
-    hScrollBar.setBounds(scrollBarRow.getX() + scrollBtnWidth, scrollBarRow.getY(),
-                         scrollBarRow.getWidth() - scrollBtnWidth * 2, scrollBarRow.getHeight());
+    hScrollBar.setBounds(scrollBarRow);
 }
 
 void WaveformDisplay::mouseDown(const juce::MouseEvent& e)