evals: add evaluation set placeholder

Author: OgeonX-Ai

evals/README.md

@@ -0,0 +1,23 @@
+# AI-OS Evaluation Set
+
+This folder contains repeatable evaluation tasks for AI-OS.
+
+## Categories
+
+- documentation improvement
+- loop selection
+- verifier selection
+- wiki synchronization
+- release readiness
+- governance review
+- security review
+
+## Result format
+
+```text
+Task:
+Expected loop:
+Required evidence:
+Pass criteria:
+Notes:
+```