Persist contextily's basemap tile cache across process invocations.

.vscode/launch.json

@@ -554,9 +554,12 @@
             // Test --build_index for 2026 to test a fixed layout
             //"args": ["-v", "1", "--build_index", "--start", "20260101", "--end", "20261231", "--force"]
             // Test fixing the "folded" bathymetry 
-            "args": ["-v", "1", "--dlist", "ahi/missionlogs/2026/20260218_20260220.dlist", "--force", "--update_ssds_provenance", "--notify", "mccann@mbari.org"]
+            //"args": ["-v", "1", "--dlist", "ahi/missionlogs/2026/20260218_20260220.dlist", "--force", "--update_ssds_provenance", "--notify", "mccann@mbari.org"]
             // Repair a badly plotted deployment with fixed bathymetry plotting - Pontus 54 Docking
             //"args": ["-v", "1", "--dlist", "pontus/missionlogs/2025/20250604_20250616.dlist"]
+            // Test caching and setting User-Agent for OSM tile server
+            "args": ["-v", "1", "--dlist", "pontus/missionlogs/2026/20260810_20260812.dlist"]
+
         },
 
     ]

src/data/create_products.py

@@ -80,6 +80,18 @@
 MISSIONODVS = "missionodvs"
 MISSIONIMAGES = "missionimages"
 
+# Persist contextily's basemap tile cache across process invocations (it defaults to a
+# per-session temp dir that's deleted on exit) so repeated/batch runs re-fetch far fewer
+# tiles from OpenStreetMap, reducing exposure to its rate limiting (403s).
+CONTEXTILY_CACHE_DIR = Path(BASE_PATH).parent / "contextily_cache"
+CONTEXTILY_CACHE_DIR.mkdir(parents=True, exist_ok=True)
+ctx.set_cache_dir(str(CONTEXTILY_CACHE_DIR))
+
+# Identify ourselves to OpenStreetMap's tile servers per their usage policy
+# (https://operations.osmfoundation.org/policies/tiles/), instead of contextily's
+# default generic/anonymous User-Agent.
+ctx.tile.USER_AGENT = "auv-python (https://github.com/mbari-org/auv-python; auv-python@mbari.org)"
+
 
 class CreateProducts:
     logger = logging.getLogger(__name__)

src/data/test_archive.py

@@ -9,7 +9,7 @@
 from archive import Archiver
 
 
-@pytest.fixture()
+@pytest.fixture()  # noqa: PT001
 def arch():
     return Archiver(add_handlers=False, clobber=False)