replace favicon

[rugeli]

Problem

What is the problem this work solves, including
closes #147

Solution

What I/we did to solve this problem

• removed default vite favicon and replaced it with the cellPACK icon (48x48 dark filled png)
• added a favicon.ico fallback for browsers that look for it by default

@thao-do also provided 32x32 png version, we can swap them in if the current one doesn't look ideal to the team

Type of change

Please delete options that are not relevant.

• New feature (non-breaking change which adds functionality)

Steps to Verify:

1. go to preview site, verify the favicon's size, color, res, etc

Screenshots (optional):

google chrome

firefox

[github-actions]

Coverage Report

Status	Category	Percentage	Covered / Total
🔵	Lines	21.39%	365 / 1706
🔵	Statements	21.39%	365 / 1706
🔵	Functions	40.35%	23 / 57
🔵	Branches	71.42%	80 / 112

File Coverage

No changed files found.

Generated in workflow #125

[github-actions]

PR Preview Action v1.6.2
Preview removed because the pull request was closed.
2025-11-07 21:55 UTC

[ascibisz]

Looks good to me!

[thao-do]

Just want to add that this should also works for dark background - it's hard to tell on the light background but it also has a very light fill. Eventually we'll consult @gj210 for optimizing the icon (details, line weight, etc.) for this tiny size but for now this is good. Thank you!