fix(blog): the eval-CLI install command — git URL, package not yet on PyPI

The published form (pip install interscript-ml-tools[sadeed]) 404s on
PyPI; the verified form installs from the public git repo and has been
tested in a clean venv end-to-end (scores 4.5701 exactly).

Author: ronaldtse

src/content/blog/2026-09-05-frontier-closed.adoc

@@ -69,7 +69,7 @@ by its counterexample beats a generalization nobody tested.
 
 Every leaderboard number we publish can now be re-derived by anyone:
 
-    pip install interscript-ml-tools[sadeed]
+    pip install "interscript-ml-tools[sadeed] @ git+https://github.com/interscript/interscript-ml.git"
     interscript-sadeed-eval score \
         --preds predictions.jsonl --data Misraj/SadeedDiac-25