Replace react-identicons library during Tailwind UI migration

[coderabbitai]

Summary

The react-identicons library is currently used in the web workspace to render identicon avatars. It does not ship its own TypeScript type definitions, which required adding a manual declaration shim (web/src/types/react-identicons.d.ts) to prevent noImplicitAny errors introduced by the stricter TypeScript configuration.

Why Replace It

• The library has no TypeScript support, necessitating a shim that should be temporary.
• The shim was added as part of feat: pre-commit type checking and lint - web #2279 (feat: pre-commit type checking and lint - web) solely to unblock stricter TS checks — it is not a long-term solution.
• Maintaining a shim adds ongoing maintenance overhead and obscures type-safety guarantees.

When to Replace It

This library should be replaced during (or alongside) the upcoming migration of the web workspace UI to Tailwind CSS. At that point, the component(s) consuming react-identicons should be refactored to use a well-typed alternative (or a custom implementation), and the shim at web/src/types/react-identicons.d.ts should be removed.

References

• PR introducing the shim: feat: pre-commit type checking and lint - web #2279
• Shim file: web/src/types/react-identicons.d.ts
• Requested by: @kyrers