diff --git a/.gitignore b/.gitignore
index 6ff57d9b..45708efa 100644
--- a/.gitignore
+++ b/.gitignore
@@ -122,4 +122,9 @@ openspec/test-site-results/**/*.webp
 docs/node_modules/
 docs/build/
 
-RESTYLE-PLAN.md
\ No newline at end of file
+RESTYLE-PLAN.md
+# Agent/test scratch and tool caches — generated, never source.
+# Added by the 2026-08-25 fleet hygiene sweep (ADR-100 Decision 2).
+.stale/
+/.e2e-state/
+.phpunit.result.cache
diff --git a/Vault-app.docx b/Vault-app.docx
deleted file mode 100644
index d760f69e..00000000
Binary files a/Vault-app.docx and /dev/null differ
diff --git a/npx b/npx
deleted file mode 100644
index e69de29b..00000000