Chore/pre commit hooks 88

[suhaslord]

Summary

Adds pre-commit hooks to make the local development checks match the repo’s existing CI more closely.

Changes

• added .pre-commit-config.yaml
  • runs the critical flake8 checks before commits
  • runs mypy before commits
  • runs the full pytest suite before pushes
• added CONTRIBUTING.md
  • basic Poetry setup
  • how to install/use pre-commit
  • commands for running the checks manually

This keeps the setup pretty lightweight while catching the same kinds of issues earlier, before they reach CI.

Closes #88

[chuckwondo]

@suhaslord, I rebased your branch on main because I merged some bot bumps, so you'll need to pull those changes on your branch, but since I rebased it, I strongly recommend you configure your git client as follows, which will prevent git pull from failing to pull the rebased branch:

git config set --global pull.rebase true

[suhaslord]

Got it, thanks for rebasing it and for the heads-up. I’ll use rebase pulls on the branch going forward.

…

On Sun, 23 Aug 2026 15:05:44 -0700, Chuck Daniels ***@***.***> wrote: chuckwondo left a comment [(nasa/python_cmr#120)](#120 (comment)) ***@***.***(https://github.com/suhaslord), I rebased your branch on main because I merged some bot bumps, so you'll need to pull those changes on your branch, but since I rebased it, I strongly recommend you configure your git client as follows, which will prevent git pull from failing to pull the rebased branch: git config set --global pull.rebase true — Reply to this email directly, [view it on GitHub](#120?email_source=notifications&email_token=BBJPPMQN5UJ5IY2OYRYHUID5LNTDRA5CNFSNUABFM5UWIORPF5TWS5BNNB2WEL2JONZXKZKDN5WW2ZLOOQXTKMZYHA3TCOBSGAYKM4TFMFZW63VHNVSW45DJN5XKKZLWMVXHJLDGN5XXIZLSL5RWY2LDNM#issuecomment-5388718200), or [unsubscribe](https://github.com/notifications/unsubscribe-auth/BBJPPMVTXO5NQZHXIGAXU2T5LNTDRAVCNFSNUABFKJSXA33TNF2G64TZHM2DCNRUGU3TCMZRHNEXG43VMU5TKMRSHAYTQNRTGY22C5QC). Triage notifications, keep track of coding agent tasks and review pull requests on the go with GitHub Mobile for [iOS](https://github.com/notifications/mobile/ios/BBJPPMXSEJUO7BDKXVYMBDD5LNTDRA5CNFSNUABFM5UWIORPF5TWS5BNNB2WEL2JONZXKZKDN5WW2ZLOOQXTKMZYHA3TCOBSGAYKM4TFMFZW63VHNVSW45DJN5XKKZLWMVXHJKTGN5XXIZLSL5UW64Y) and [Android](https://github.com/notifications/mobile/android/BBJPPMSRRKMSIT3PY6L6WIT5LNTDRA5CNFSNUABFM5UWIORPF5TWS5BNNB2WEL2JONZXKZKDN5WW2ZLOOQXTKMZYHA3TCOBSGAYKM4TFMFZW63VHNVSW45DJN5XKKZLWMVXHJLTGN5XXIZLSL5QW4ZDSN5UWI). Download it today! You are receiving this because you were mentioned.