diff --git a/.vscode/settings.json b/.vscode/settings.json
index 2da23653..f76ffb22 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -12,8 +12,5 @@
     "python.testing.cwd": "${workspaceFolder}",
     "files.eol": "\n",
     "files.trimTrailingWhitespace": true,
-    "files.insertFinalNewline": true,
-    "chat.tools.terminal.autoApprove": {
-        "git submodule": true
-    }
+    "files.insertFinalNewline": true
 }
\ No newline at end of file
diff --git a/AGENTS.md b/AGENTS.md
index f82639ca..1fd99ba2 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -30,7 +30,7 @@ CI runs ruff check, ruff format --check, typos, the unittest suite, and the spec
 
 ## Conventions that differ from defaults
 
-- **ASCII only** in prose, code, comments, docstrings, and filenames: `-` not em or en dashes, `->` not arrows, `...` not an ellipsis character, straight quotes, no emoji. Exception: genuine data (author names, dataset titles, recorded API responses) keeps whatever characters it actually contains.
+- **ASCII only** in prose, code, comments, docstrings, and filenames: `-` not em or en dashes, `->` not arrows, `...` not an ellipsis character, straight quotes, no emoji. Applies to new and edited content; never sweep existing files for it as a side effect of other work. Exception: genuine data (author names, dataset titles, recorded API responses) keeps whatever characters it actually contains.
 - Line length 120; ruff rules live in `pyproject.toml` under `[tool.ruff]`.
 - Google-style docstrings for public APIs, with `Parameters:` not `Args:`.
 - Markdown headers in sentence case: first word, proper nouns, and acronyms.