Changes to be committed:

modified:   data/www/index.html
	new file:   data/www/spectrum.html
	new file:   partitions.csv
	modified:   platformio.ini
	deleted:    src/NoteMappings copy.h
	modified:   src/main.cpp
	modified:   src/web_server.cpp
	modified:   src/web_server.h

platformio.ini

@@ -18,7 +18,7 @@ board_build.flash_mode = qio
 board_build.psram_type = qio
 board_upload.flash_size = 4MB
 board_upload.maximum_size = 4194304
-board_build.partitions = default.csv
+board_build.partitions = partitions.csv  # Use custom partition table
 build_flags = -DARDUINO_USB_CDC_ON_BOOT=1
               -DBOARD_HAS_PSRAM
               -DARDUINO_ESP32S3_DEV
@@ -33,7 +33,7 @@ monitor_filters = esp32_exception_decoder
 lib_deps = 
     fastled/FastLED@^3.9.4
     https://github.com/tzapu/WiFiManager.git
-	kosme/arduinoFFT@^2.0.4
+    kosme/arduinoFFT@^2.0.4
     https://github.com/me-no-dev/ESPAsyncWebServer.git
     https://github.com/me-no-dev/AsyncTCP.git
     ; h2zero/NimBLE-Arduino@^1.4.1