diff --git a/Setup.md b/Setup.md
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+++ b/Setup.md
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+# Setup
+
+## Proven Setup Signals
+
+| Signal | Detail |
+|---|---|
+| CMakeLists.txt | CMake/ESP-IDF style build metadata is present. |
+| Arduino sketches | WiFiX-Enhanced/.pio/libdeps/esp32_enhanced/Adafruit BusIO/examples/genericdevice_uartregtest/genericdevice_uartregtest.ino, WiFiX-Enhanced/.pio/libdeps/esp32_enhanced/Adafruit BusIO/examples/genericdevice_uarttest/genericdevice_uarttest.ino, WiFiX-Enhanced/.pio/libdeps/esp32_enhanced/Adafruit BusIO/examples/i2c_address_detect/i2c_address_detect.ino, WiFiX-Enhanced/.pio/libdeps/esp32_enhanced/Adafruit BusIO/examples/i2c_readwrite/i2c_readwrite.ino, WiFiX-Enhanced/.pio/libdeps/esp32_enhanced/Adafruit BusIO/examples/i2c_registers/i2c_registers.ino, WiFiX-Enhanced/.pio/libdeps/esp32_enhanced/Adafruit BusIO/examples/i2corspi_register/i2corspi_register.ino, WiFiX-Enhanced/.pio/libdeps/esp32_enhanced/Adafruit BusIO/examples/spi_modetest/spi_modetest.ino, WiFiX-Enhanced/.pio/libdeps/esp32_enhanced/Adafruit BusIO/examples/spi_readwrite/spi_readwrite.ino, WiFiX-Enhanced/.pio/libdeps/esp32_enhanced/Adafruit BusIO/examples/spi_register_bits/spi_register_bits.ino, WiFiX-Enhanced/.pio/libdeps/esp32_enhanced/Adafruit BusIO/examples/spi_registers/spi_registers.ino |
+| README files | README.md, WiFiX-Enhanced/.pio/libdeps/esp32_enhanced/Adafruit BusIO/README.md, WiFiX-Enhanced/.pio/libdeps/esp32_enhanced/Adafruit GFX Library/README.md, WiFiX-Enhanced/.pio/libdeps/esp32_enhanced/Adafruit SSD1306/README.md, WiFiX-Enhanced/.pio/libdeps/esp32_enhanced/ArduinoJson/README.md, WiFiX-Enhanced/.pio/libdeps/esp32_enhanced/AsyncTCP/README.md |
+
+## Setup Path
+
+- Use the repo CMake/ESP-IDF workflow; confirm SDK version and board target before build or flash.
+- Open Arduino sketches only after confirming board package, library dependencies, and target board.
+
+## Environment Rules
+
+- Keep local secrets out of Git.
+- Put generated build output outside source control.
+- Prefer a clean checkout when validating setup instructions.
+- Record the exact command that works in the readiness issue before closing it.
+
+## Current Gaps
+
+- No setup gaps were inferred from inspected evidence.