Initial commit: InstaDrums VST3 drum sampler plugin

- 12-pad drum sampler with 4x3 grid (expandable by 4)
- Velocity layers with round-robin (Salamander-style filename parsing)
- Rhythm Engine-style GUI: pad grid (left), sample editor (right top),
  FX panel (right bottom), master panel (bottom)
- Waveform thumbnails on pads + large waveform in sample editor
- ADSR envelope, pitch, pan per pad
- Drag & drop sample/folder loading
- Kit save/load (.drumkit XML presets)
- Load Folder with smart name matching (kick, snare, hihat, etc.)
- Choke groups, one-shot/polyphonic mode
- Dark modern LookAndFeel with neon accent colors
- Built with JUCE framework, CMake, MSVC 2022

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Source/FxPanel.h

@@ -0,0 +1,45 @@
+#pragma once
+#include <JuceHeader.h>
+
+class FxPanel : public juce::Component
+{
+public:
+    FxPanel();
+
+    void paint (juce::Graphics& g) override;
+    void resized() override;
+
+    // FX parameter getters (for processor to read)
+    float getCompThreshold() const { return (float) compThreshSlider.getValue(); }
+    float getCompRatio()     const { return (float) compRatioSlider.getValue(); }
+    float getEqLo()          const { return (float) eqLoSlider.getValue(); }
+    float getEqMid()         const { return (float) eqMidSlider.getValue(); }
+    float getEqHi()          const { return (float) eqHiSlider.getValue(); }
+    float getDistDrive()     const { return (float) distDriveSlider.getValue(); }
+    float getDistMix()       const { return (float) distMixSlider.getValue(); }
+    float getReverbSize()    const { return (float) reverbSizeSlider.getValue(); }
+    float getReverbDecay()   const { return (float) reverbDecaySlider.getValue(); }
+
+private:
+    // Compressor
+    juce::Slider compThreshSlider, compRatioSlider;
+    juce::Label  compThreshLabel, compRatioLabel, compTitle;
+
+    // EQ
+    juce::Slider eqLoSlider, eqMidSlider, eqHiSlider;
+    juce::Label  eqLoLabel, eqMidLabel, eqHiLabel, eqTitle;
+
+    // Distortion
+    juce::Slider distDriveSlider, distMixSlider;
+    juce::Label  distDriveLabel, distMixLabel, distTitle;
+
+    // Reverb
+    juce::Slider reverbSizeSlider, reverbDecaySlider;
+    juce::Label  reverbSizeLabel, reverbDecayLabel, reverbTitle;
+
+    void setupKnob (juce::Slider& s, juce::Label& l, const juce::String& name,
+                    double min, double max, double val, double step = 0.01);
+    void setupTitle (juce::Label& l, const juce::String& text);
+
+    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (FxPanel)
+};