fix: run repo config before fetch in get-latest update path

Ensures credentials are configured when updating an existing repo,
not just when cloning a new one.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

git-hangman-lab/scripts/repo

@@ -338,6 +338,8 @@ do_get_latest() {
       git -C "$REPO_DIR" checkout -- . 2>/dev/null || true
     fi
 
+    do_config --repo-path "$REPO_DIR"
+
     echo "Fetching: $REPO_NAME ($BRANCH)"
     git -C "$REPO_DIR" fetch origin "$BRANCH" 2>/dev/null || true
     git -C "$REPO_DIR" checkout "$BRANCH" 2>/dev/null || git -C "$REPO_DIR" checkout -b "$BRANCH" "origin/$BRANCH" 2>/dev/null || true