Extract magic row limit variable

popcorn.py

@@ -13,6 +13,8 @@ with app.setup:
     import marimo as mo
     import polars as pl
 
+    LIMIT_ROWS = 200
+
 
 @app.cell(hide_code=True)
 def _():
@@ -111,7 +113,7 @@ def _():
 def _():
     df = (
         pl.scan_ndjson("data/daily/*", include_file_paths="file")
-        .head(200)  # FIXME: take out after debug
+        .head(LIMIT_ROWS)  # FIXME: take out after debug
         .with_columns(
             pl.col("file")
             .str.replace(r"data/daily/(\d{4}-\d{2}-\d{2}).json", "${1}")