Detailed wiki content repair: Setup

Setup.md

@@ -0,0 +1,23 @@
+# Setup
+
+## Proven Setup Signals
+
+| Signal | Detail |
+|---|---|
+| Arduino sketches | Evil-M5Project/Evil-AtomS3-v1-1-7.ino, Evil-M5Project/Evil-CYD-Beta.ino, Evil-M5Project/Evil-Cardputer-v1-4-2/Evil-Cardputer-v1-4-2.ino, Evil-M5Project/Evil-Face-Dial-v1-0.ino, Evil-M5Project/Evil-Face-v1-0.ino, Evil-M5Project/Evil-M5Core2-1-3-9.ino, Evil-M5Project/Evil-M5Core3-1-1-9.ino, Evil-M5Project/Evil-NanoC6.ino, Evil-M5Project/Evil-Stick-Beta.ino, Evil-M5Project/Semi-Evil-M5Dial-v1-1-0.ino |
+| README files | Evil-M5Project/README.md, Evil-M5Project/binaries/README.md, Evil-M5Project/slave/README.md, Evil-M5Project/utilities/README.md, README.md |
+
+## Setup Path
+
+- 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.