Add pre-commit to requirements and README (#2491)

* Initial plan

* Add pre-commit to requirements and README

Co-authored-by: ericholscher <[email protected]>

---------

Co-authored-by: copilot-swe-agent[bot] <[email protected]>
Co-authored-by: ericholscher <[email protected]>

Author: Copilot

README.md

@@ -57,6 +57,20 @@ WIP (Work In Progress) Docs on how to do this:
 
 2. In the repository root directory (`www` by default), run `pip install -r requirements.txt` to install sphinx and other requirements.
 
+### Setting up pre-commit hooks
+
+This repository uses [pre-commit](https://pre-commit.com/) to run automated checks on files before committing. After installing the requirements, set up the pre-commit hooks:
+
+```
+pre-commit install
+```
+
+The hooks will now run automatically when you commit changes. You can also run them manually:
+
+```
+pre-commit run --all-files
+```
+
 ### Previewing the docs locally
 
 > Remember to activate the virtual environment using the appropriate command for your OS and Shell before running the following commands.

requirements.txt

@@ -35,3 +35,5 @@ sphinx-notfound-page==1.1.0
 sphinxext-opengraph==0.9.1
 # For social cards
 matplotlib==3.9.4
+# For pre-commit hooks
+pre-commit==4.0.1