clean up some unused files (#4279)

Author: thecodingwizard

.github/(archived) module-review.md

@@ -9,16 +9,12 @@ to the following companies for generously providing discounted or free services:
 - [Vercel](https://vercel.com/?utm_source=cp-initiative&utm_campaign=oss), free
   hosting & continuous deployment
 - [Algolia](https://algolia.com/), free search functionality
-- [DigitalOcean](https://m.do.co/c/a07c32d07394), hosting credits
 - [Chromatic](https://www.chromatic.com/) for providing the visual testing
   platform that helps us review UI changes and catch visual regressions
+- [Microsoft for Nonprofits](https://microsoft.com/)
 - [Google for Nonprofits](https://google.com/)
   - [G Suite](https://workspace.google.com/) Nonprofit Plan
   - Google Ad Grant
-- [Microsoft for Nonprofits](https://microsoft.com/)
 - [Github for Nonprofits](https://github.com/)
-- [Canva for Nonprofits](https://canva.com/)
 - [Sentry](https://sentry.io/), error reporting
-- [BrowserStack](https://browserstack.com/), browser testing
-- [Hotjar](https://hotjar.com/), website heatmaps & behavioral analytics
 - [slido](https://www.sli.do/), Q&A and polling platform

content/4_Gold/.DS.swp

@@ -12,7 +12,7 @@ experience.
    - Install [node.js](https://nodejs.org/en/)
      - Gatsby docs:
        https://www.gatsbyjs.org/tutorial/part-zero/#install-nodejs-for-your-appropriate-operating-system
-   - Install [yarn](https://classic.yarnpkg.com/en/)
+   - Install [yarn 1](https://classic.yarnpkg.com/en/)
      - `npm install -g yarn`? might work
 2. Clone repo
    - `git clone https://github.com/cpinitiative/usaco-guide.git`
@@ -25,12 +25,16 @@ experience.
 
 ## Link Checker
 
-`yarn build && yarn serve` -- keep this terminal alive!
+Update 2/3/24: I'm not certain whether this actually works anymore...
 
-`yarn check-links`
+By default, Github CI will check for broken _internal_ links. We can also
+manually check for broken external links by:
 
-If crash due to some `bhttp` error, it's probably a timeout. To fix temporarily,
-run:
+1. `yarn build && yarn serve` -- keep this terminal alive!
+2. `yarn check-links`
+
+If this command crashes due to some `bhttp` error, it's probably a timeout. To
+fix temporarily, run:
 
 ```
 blc http://localhost:9000 -rof --exclude train.usaco.org
@@ -41,6 +45,10 @@ exclusion list. As `train.usaco.org` sometimes crashes, it's added already.
 
 ## XDM Configuration
 
+Update 2/3/24: We switched from MDX v1 to XDM a while ago, but now that MDX
+v2/v3 are out with many of the features found in XDM, we should switch back.
+`gatsby-plugin-mdx` supports MDX v2, which is sufficient for us.
+
 XDM configuration is currently (somewhat) duplicated across three files:
 
 1. `src/gatsby/create-xdm-node.ts`

docs/Companies.md

@@ -3,6 +3,8 @@
 The following is a list of third party services that the USACO Guide /
 Competitive Programming Initiative uses.
 
+Note: This may be out of date.
+
 ## USACO Guide
 
 - Hosted on Vercel (sponsored hosting, but the free hobby tier will likely
@@ -19,19 +21,16 @@ Competitive Programming Initiative uses.
     the free tier plan. Otherwise pay as you go.
   - No easy replacement. Without this, module search + problems search won't
     work.
-- Hotjar & Google analytics
 
 ## IDE
 
 - https://github.com/thecodingwizard/ide
-- Uses a [Judge0](https://github.com/judge0/judge0) instance hosted on
-  DigitalOcean at https://judge0.usaco.guide/
+- Our custom serverless online judge is hosted on AWS Lambda.
 
 ## Forum
 
-- Hosted on DigitalOcean (\$20/mo)
+- Hosted on Microsoft Azure
   - Can host on any VPS
-  - Hub for Good sponsorship -- \$250 in credits (yearly? may need to reapply)
 - Uses Discourse (open source, free)
   - One-click setup on DigitalOcean doesn't work -- manually configure app.yml
 - Uses Mailgun as email provider (currently on pay-as-you-go plan, may or may
@@ -51,11 +50,4 @@ Competitive Programming Initiative uses.
   - Google Ad Grant
 - Microsoft Nonprofits
 - Github Nonprofits
-- Canva for Nonprofits
-- Slido (nonprofit plan)
-- Mailchimp (free plan)
-
-## Services we no longer use
-
-- Freshdesk (free plan)
-  - Not necessary. We (sort of not really) use this just to manage emails.
+- Mailgun

docs/Front End Documentation.md

@@ -0,0 +1 @@
+Miscellaneous Python scripts