Add Gatineau 2024 Actuals

[jclarkin]

Closes #99

Adds Gatineau's 2024 municipal financial actuals to Canada Spends ($900M total spending, $164M surplus).

What's Included

• 2024 Gatineau Financial Actuals: Complete revenue and expense breakdown with full hierarchy
• Sankey Diagram: Fully functional visualization
• Extraction Script: data/gatineau/scripts/processor.py for automated PDF processing
• Documentation: README with setup and usage instructions

Testing

• ✅ Linter passes
• ✅ Script executed successfully
• ✅ All values verified against PDF source
• ✅ Negative values handled correctly
• ✅ Single-child categories collapsed appropriately
• ✅ Sankey diagram renders correctly

Notes

• Both French (llm_extracted.md) and English (llm_extracted_en.md) versions included
• Processor defaults to English version but supports both

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[melkuo]

Hey @jclarkin, awesome to see your leadership in putting this together!

This seems like budgeted/forecasted data? Our sankeys are made based on actual expenditures. We want to know how the government actually made and spent their money.

I will also say, without diving too deep into the data, I think this could be more granular to make it more interesting/insightful. As a small litmus test, Toronto Spends and Vancouver Spends go "three layers deep" on the expenses side. This involved mashing together granular unaudited data with audited totals.

Check out the wiki here if you haven't already: https://github.com/BuildCanada/CanadaSpends/wiki

[jclarkin]

Thanks @melkuo! I will take another stab at this, to try and track down the actuals.

Hopefully (unlike my town) the numbers are online, and not only viewable at a physical office 🥲

[melkuo]

Awesome!

I get a Page non trouvée when I click on the source in Methodology section.

Nit: the revenue side is so granular such that the layers are all squishy and you have to hover to see the categories. It's not immediately obvious to me how to consolidate, so I'll leave it as a nit.

Otherwise adding in @xrendan for eng review!

[jclarkin]

Thanks @melkuo 🖖

I fixed the hyperlink in the methodology section to point to the high-level Gatineau portal that lists all the public financial documents.

As for the granularity, we could just truncate the depth at a max 4 or 5 deep. I was leaning on the "more precision is better" philosophy, but agree that the UI gets a bit spidery when stretched that deep...