Add single node CRG template

[BrianMichell]

Implements the CRG template. Currently uses a placeholder name until a better one can be settled on.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.06%. Comparing base (c3ba558) to head (92ac8c4).
⚠️ Report is 250 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #861      +/-   ##
==========================================
+ Coverage   85.30%   93.06%   +7.75%     
==========================================
  Files          46      147     +101     
  Lines        2219     8406    +6187     
  Branches      306      469     +163     
==========================================
+ Hits         1893     7823    +5930     
- Misses        281      509     +228     
- Partials       45       74      +29     

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[andgineer]

Default chunk is (1, 512, 4096) — that splits our ~30k-sample CRG traces on time.

We're on (1, 512, 32768) so a whole trace stays one chunk. Can you flip the template default to that?

[andgineer]

Hit the BloscCname / pydantic import crash on this tip with zarr>=3.3.0.

Looks like the zarr pin (or the #852 Blosc fix) made it onto the multi-node CRG PR but not this one.
Can you carry it here too?

[BrianMichell]

Hit the BloscCname / pydantic import crash on this tip with zarr>=3.3.0.

Looks like the zarr pin (or the #852 Blosc fix) made it onto the multi-node CRG PR but not this one. Can you carry it here too?

Problem resolved offline.

This particular issue seems to have been an environment issue and is unrelated to the actual PR.