fix(console): validate add member email

[kekius-maximus45]

Summary

Fixes #6296.

Adds client-side email validation to the Add Member drawer so invalid email strings are blocked before the API request is sent.

Changes

• Added the same email validation regex used by InvitationDrawer
• Shows an inline Enter a valid email address. message for invalid input
• Disables the Add Member button until the trimmed email is valid
• Sends the trimmed email value to the add-member API
• Added regression tests for invalid email blocking and trimmed valid submission

Testing

• AddMemberDrawer.test.tsx passes
• eslint src passes via local ESLint binary
• tsc -b passes
• Vite production build passes

Note: the full Vitest suite has unrelated existing failures in MFA/public-key/secure-vault tests; the new focused AddMemberDrawer tests pass.

[kekius-maximus45]

@danielgatis check the pr.

[otavio]

/review

[github-actions]

Claude finished @otavio's task in 4m 27s —— View job

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Code Review Complete

Reviewed 2 files across code quality, security, testing, TypeScript patterns, and architecture — no issues found. The code looks good as-is.

The implementation correctly mirrors the established validation pattern from InvitationDrawer.tsx, with proper accessibility attributes (htmlFor/id, aria-invalid, aria-describedby), state reset on drawer open, and trimmed email submission. Tests cover both the invalid-email blocking path and the trimmed valid-email submission path.

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[orihamama]

@claude Can you give a brief summary of what files were changed in this PR?