fix(extension): resolve Codeforces dark mode visibility for code syntax and LGM handles (closes #31)

[Thundercloud12]

Summary

This PR fixes text contrast and visibility issues when using the Browser Companion's dark theme on Codeforces pages. Specifically, it resolves the invisible code syntax elements on submission status pages and makes the first letter of Legendary Grandmaster (LGM) usernames legible.

Closes #31

Component

• Browser companion (Chrome and Firefox)
• Terminal app (Rust)
• VS Code extension
• Website / docs

What changed

• Code Syntax Highlighting Fix (cfColorCode):
  • Overrode Google Code Prettify's .pln (plain text/variables) and .pun (braces, operators, punctuation) classes within .prettyprint to use the themed foreground color (p.fg) under dark mode, preventing them from rendering as black text.
  • Overrode comments (.com) to use the themed dim color (p.dim).
• LGM Username First Letter Visibility Fix (cfColorMisc):
  • Overrode .legendary-user-first-letter to use the themed foreground color (p.fg) under dark mode so that the black first letter of LGM handles remains visible against dark page backgrounds.

Test plan

1. Install/load the unpacked extension in Chrome/Firefox.
2. Enable dark mode in CPOS.
3. Open a Codeforces submission status page containing source code (e.g. click a submission ID #). All variables, semicolons, brackets, and operators should now be fully legible and high-contrast.
4. Locate any Legendary Grandmaster user (e.g. tourist). The first letter of their handle should be readable instead of blending into the background.

[vercel]

@Thundercloud12 is attempting to deploy a commit to the Soham Aggarwal's projects Team on Vercel.

A member of the Team first needs to authorize it.

[Thundercloud12]

@Soham109 just fixing a issue raised nothing much fix is just overriding the style

[Soham109]

hey @Thundercloud12, thanks for your pr. I have been a little busy lately. Please allow me till the 2nd week of september. Sorry for the delay and thank you so much for your contribution!

[Thundercloud12]

@Soham109 no worries!!