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>

CMakeLists.txt

@@ -0,0 +1,58 @@
+cmake_minimum_required(VERSION 3.22)
+project(InstaDrums VERSION 1.0.0)
+
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/../JUCE ${CMAKE_CURRENT_BINARY_DIR}/JUCE)
+
+juce_add_plugin(InstaDrums
+    COMPANY_NAME "InstaDrums"
+    IS_SYNTH TRUE
+    NEEDS_MIDI_INPUT TRUE
+    NEEDS_MIDI_OUTPUT TRUE
+    PLUGIN_MANUFACTURER_CODE Inst
+    PLUGIN_CODE Idrm
+    FORMATS VST3 Standalone
+    PRODUCT_NAME "InstaDrums"
+    COPY_PLUGIN_AFTER_BUILD FALSE
+)
+
+juce_generate_juce_header(InstaDrums)
+
+target_sources(InstaDrums
+    PRIVATE
+        Source/PluginProcessor.cpp
+        Source/PluginEditor.cpp
+        Source/DrumPad.cpp
+        Source/PadComponent.cpp
+        Source/LookAndFeel.cpp
+        Source/WaveformDisplay.cpp
+        Source/SampleEditorPanel.cpp
+        Source/FxPanel.cpp
+        Source/MasterPanel.cpp
+)
+
+target_compile_definitions(InstaDrums
+    PUBLIC
+        JUCE_WEB_BROWSER=0
+        JUCE_USE_CURL=0
+        JUCE_VST3_CAN_REPLACE_VST2=0
+)
+
+target_link_libraries(InstaDrums
+    PRIVATE
+        juce::juce_audio_basics
+        juce::juce_audio_devices
+        juce::juce_audio_formats
+        juce::juce_audio_processors
+        juce::juce_audio_utils
+        juce::juce_core
+        juce::juce_dsp
+        juce::juce_graphics
+        juce::juce_gui_basics
+        juce::juce_gui_extra
+    PUBLIC
+        juce::juce_recommended_config_flags
+        juce::juce_recommended_warning_flags
+)