security: ignore internal rebranding and operational scripts

.gitignore

@@ -124,3 +124,10 @@ tools/runtime-upgrade/
 tools/wasm-crypto/
 tools/usdt-bridge/bridge_db.json
 .claude/domains-repositories
+
+# Internal operational/rebranding scripts (not for public)
+docs/rebrand_project.py
+docs/scan_old_words.py
+docs/workflow_rebranding.md
+docs/reserve_crate_names_v2.py
+docs/publish_crates_slow.py