Staging deployment & validation of codec-enabled pipeline

[lhoupert]

Description:
Deploy the codec-enabled pipeline to staging and validate output against existing data.

Tasks:

• Build Docker image with updated dependencies
• Create a new staging collection (e.g. sentinel-2-l2a-geozarr-codec)
• Convert a subset of S2 items into the new collection
• Compare with existing collection:
  • Data values match (float32 output identical when read back)
  • Storage size reduction measured (uint16 vs float32)
  • TiTiler rendering works correctly with rescale=0%2C1
• Verify xarray reads output as float32 transparently
• Verify zarr metadata (zarr.json) includes codec definition
• Document results ? (size savings, compatibility)