Fix/threads and html template

.pre-commit-config.yaml

@@ -5,20 +5,20 @@ repos:
       - id: validate-pyproject
 
   - repo: https://github.com/PyCQA/isort
-    rev: 8.0.1
+    rev: 9.0.0a3
     hooks:
       - id: isort
         language_version: python
 
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.15.8
+    rev: v0.15.17
     hooks:
       - id: ruff
         args: ["--fix"]
       - id: ruff-format
 
   - repo: https://github.com/pre-commit/mirrors-mypy
-    rev: v1.20.0
+    rev: v2.1.0
     hooks:
       - id: mypy
         language_version: python

CHANGES.md

@@ -1,5 +1,10 @@
 ## Unreleased
 
+## 0.19.0 (2026-06-16)
+
+* fix: HTML template
+* fix: set `GDAL_NUM_THREADS=1` by default to avoid multhreading block decompression
+
 ## 0.18.0 (2026-04-02)
 
 * add: python 3.14 support

tilebench/__init__.py

@@ -122,7 +122,9 @@ def wrapped_f(*args, **kwargs):
             logger.addHandler(handler)
 
             gdal_config = config or {}
-            gdal_config.update({"CPL_DEBUG": "ON", "CPL_CURL_VERBOSE": "YES"})
+            gdal_config.update(
+                {"CPL_DEBUG": "ON", "CPL_CURL_VERBOSE": "YES", "GDAL_NUM_THREADS": "1"}
+            )
 
             with rasterio.Env(**gdal_config):
                 with Timer() as t:

tilebench/viz.py

@@ -382,8 +382,8 @@ async def viewer(request: Request):
             """Handle /index.html."""
             return templates.TemplateResponse(
                 name="index.html",
+                request=request,
                 context={
-                    "request": request,
                     "geojson_endpoint": str(request.url_for("info")),
                     "grid_endpoint": str(request.url_for("grid")),
                     "tile_endpoint": str(