fix: remove empty override args from workflow template

Empty string parameters caused argparse errors.
Workflows now use collection-specific defaults from convert.py CONFIGS.

Author: wietzesuijker

workflows/README.md

@@ -114,6 +114,25 @@ Key parameters (see [../README.md](../README.md) for full reference):
 - `s3_output_bucket`: Output bucket
 - `pipeline_image_version`: Docker image tag
 
+**Override conversion parameters** (optional, for testing):
+
+```bash
+# Example: Test with different chunk size and disable sharding
+argo submit workflows/base/workflowtemplate.yaml \
+  --from workflowtemplate/geozarr-pipeline \
+  -p source_url="https://api.example.com/stac/.../items/ITEM_ID" \
+  -p override_spatial_chunk="2048" \
+  -p override_enable_sharding="false"
+```
+
+Available overrides (empty = use collection defaults):
+- `override_groups`: Comma-separated zarr groups (e.g., `/measurements/reflectance/r10m`)
+- `override_spatial_chunk`: Chunk size (e.g., `2048`)
+- `override_tile_width`: Tile width (e.g., `512`)
+- `override_enable_sharding`: Enable sharding (`true`/`false`)
+
+Defaults: S2 (1024/256/true), S1 (4096/512/false). See `scripts/get_conversion_params.py`.
+
 ### Resource Tuning
 
 Edit `workflows/base/workflowtemplate.yaml`:

workflows/base/workflowtemplate.yaml

@@ -11,7 +11,7 @@ spec:
     secondsAfterCompletion: 86400
   podGC:
     strategy: OnPodSuccess
-    deleteDelayDuration: 300s
+    deleteDelayDuration: 3600s
   workflowMetadata:
     labels:
       workflows.argoproj.io/workflow-template: geozarr-pipeline
@@ -31,7 +31,16 @@ spec:
     - name: s3_output_prefix
       value: tests-output
     - name: pipeline_image_version
-      value: slim
+      value: feature-align-data-model
+    # Optional conversion parameter overrides (empty = use collection defaults)
+    - name: override_groups
+      value: ""
+    - name: override_spatial_chunk
+      value: ""
+    - name: override_tile_width
+      value: ""
+    - name: override_enable_sharding
+      value: ""
   templates:
   - name: main
     dag:
@@ -58,7 +67,6 @@ spec:
       - "{{workflow.parameters.s3_output_bucket}}"
       - --s3-output-prefix
       - "{{workflow.parameters.s3_output_prefix}}"
-      - --verbose
       resources:
         requests:
           memory: 4Gi