Make sure parent directory exists in decoding

[edeno]

Description

Fixes #1358

This pull request ensures that the results directory is created if it doesn't already exist before saving output files in both the clusterless and sorted spikes decoding modules. This change improves reliability by preventing errors when writing results to non-existent directories.

Directory creation improvements:

• In src/spyglass/decoding/v1/clusterless.py, the make method now creates the results directory using Path(config["SPYGLASS_ANALYSIS_DIR"]) / nwb_file_name before generating and saving results files.
• In src/spyglass/decoding/v1/sorted_spikes.py, the make method similarly ensures the results directory exists before saving results.

Checklist:

• This PR should be accompanied by a release: (yes/no/unsure)
• If release, I have updated the CITATION.cff
• This PR makes edits to table definitions: (yes/no)
• If table edits, I have included an alter snippet for release notes.
• If this PR makes changes to position, I ran the relevant tests locally.
• I have updated the CHANGELOG.md with PR number and description.
• I have added/edited docs/notebooks to reflect the changes

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 69.71%. Comparing base (4a198e5) to head (f2fd46c).
⚠️ Report is 3 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1362      +/-   ##
==========================================
+ Coverage   69.66%   69.71%   +0.05%     
==========================================
  Files         103      103              
  Lines       12532    12539       +7     
==========================================
+ Hits         8730     8742      +12     
+ Misses       3802     3797       -5     

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[Copilot]

Pull Request Overview

This PR fixes a bug where decoding operations could fail if the results directory doesn't exist by ensuring parent directories are created before saving output files. This addresses issue #1358 and improves the reliability of the decoding modules.

Key changes:

• Added directory creation logic in both clusterless and sorted spikes decoding modules
• Refactored path construction to use a shared results_dir variable for better maintainability
• Updated changelog to document the fix

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
src/spyglass/decoding/v1/sorted_spikes.py	Added results directory creation and refactored path construction in the make method
src/spyglass/decoding/v1/clusterless.py	Added results directory creation and refactored path construction in the make method
CHANGELOG.md	Added entry documenting the decoding directory creation fix