Fix path references in scripts after reorganization

Update 8 scripts to use Path(__file__).parent.parent as PROJECT_ROOT
so they resolve data/, output/, and internet_cables/ relative to the
project root rather than the caller's working directory.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

scripts/make_internet_cables_map.py

@@ -5,6 +5,7 @@ and city-level network-dominance points from PostGIS.
 import argparse
 import json
 import os
+from pathlib import Path
 
 import psycopg2
 
@@ -307,7 +308,7 @@ def parse_args():
     p = argparse.ArgumentParser(
         description="Render a Leaflet map combining data centers, submarine cables, and city dominance."
     )
-    p.add_argument("--output", default="data_centers_cables_map.html")
+    p.add_argument("--output", default=str(Path(__file__).parent.parent / "output" / "data_centers_cables_map.html"))
     p.add_argument(
         "--us-cities-only",
         action="store_true",