Add minimal sensitive-info hygiene plan and projection cause sample diagnostics

artifacts/plans/14-sensitive-info-hygiene.md

@@ -0,0 +1,9 @@
+# 14) Sensitive Information Hygiene
+
+## Goal
+Detect and remove sensitive data exposure from code, config, logs, and payload surfaces.
+
+## Minimal Plan
+1. Add a repeatable scan for sensitive patterns across repo and runtime-generated artifacts.
+2. Expunge discovered sensitive values and replace with safe placeholders or references.
+3. Add guardrails to prevent reintroduction and document the remediation workflow.