feat(new-nav): add environment overview page

[rmnbrd]

Summary

Issue:

Screenshots / Recordings

Testing

• Changes tested locally in the relevant Console's pages and Storybooks
• yarn test or yarn test -u (if you need to regenerate snapshots)
• yarn format
• yarn lint

PR Checklist

• I followed naming, styling, and TypeScript rules (see .cursor/rules)
• I performed a self-review (diff inspected, dead code removed)
• I titled the PR using Conventional Commits with a scope when possible (e.g. feat(service): add new Terraform service) - required for semantic-release
• I only kept necessary comments, written in English (watch for useless AI comments)
• I involved a designer to validate UI changes if I am not a designer
• I covered new business logic with tests (unit)
• I confirmed CI is green (Codecov red can be accepted)
• I reviewed and executed locally any AI-assisted code

[RemiBonnet]

Qovery can create a Preview Environment for this PR.
To trigger its creation, please post a comment with one of the following command.

Command	Blueprint environment
/qovery preview 15d69f24-9bc1-4a8d-80fe-d1bb1b2bcd00	New Navigation
/qovery preview {all|UUID1,UUID2,...}	To preview multiple environments

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This comment has been generated from Qovery AI 🤖.
Below, a word from its wisdom :

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[rmnbrd]

/qovery preview 15d69f24-9bc1-4a8d-80fe-d1bb1b2bcd00

[RemiBonnet]

A preview environment was automatically created via Qovery.
Click on the link below to follow its deployment and use it.
👉 [PR] New Navigation - feat(new-nav): add environment overview page - 2026-02-11T10:28:47Z

Another comment will be posted when deployments are finished