docs(agent): MEMORY — check git status before add -A (harness drops files)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

agent/MEMORY.md

@@ -75,3 +75,7 @@ iteration would otherwise rediscover.
   lock (README § 3).
 - grub `loadfont`s every `.pf2` in a theme dir — reuse a bundled DejaVu
   rather than shipping fonts (§ Distro branding).
+- The Claude Code harness drops machine-local files into the repo
+  (`.claude/skills/…`) mid-session — never `git add -A` blindly; check
+  `git status --short` for strangers first (they're gitignored now, but
+  the next surprise won't be) (§ loop hygiene).