fix: use normalized, URL-encoded ENS name for avatar proxy URL

[rickstaa]

Follow-up to #679.

Change

Build the avatar proxy URL from the normalized name and encodeURIComponent the path segment:

avatar: avatar
  ? `/api/ens-data/image/${encodeURIComponent(normalizedName)}`
  : null,

Why

• Encoding: a normalized ENS name can still contain Unicode (emoji domains); raw Unicode in a URL path segment is invalid. ASCII names like transcode.eth are unaffected (no-op).
• Normalized name: the image route (pages/api/ens-data/image/[name].tsx) checks its blacklist on the raw param before normalizing, so feeding it the canonical form keeps that filter consistent. The route re-normalizes, so this is idempotent.

Addresses a Copilot review comment on #679.

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Project	Deployment	Actions	Updated (UTC)
explorer-arbitrum-one	Ready	Preview, Comment	May 25, 2026 3:19pm

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⚙️ Run configuration

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📥 Commits

Reviewing files that changed from the base of the PR and between 4f63efa and 4d4cd18.

📒 Files selected for processing (1)

• lib/api/ens.ts

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• Commit unit tests in branch fix/ens-avatar-url-encoding

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[Copilot]

Pull request overview

This PR updates ENS avatar proxy URL construction to use the ENS normalized name and to URL-encode it when embedding it in the /api/ens-data/image/[name] path segment, preventing invalid raw-Unicode paths for emoji/Unicode ENS names and aligning with the API route’s pre-normalization blacklist check behavior.

Changes:

• Build the avatar proxy URL from normalizedName instead of name.
• Apply encodeURIComponent to the ENS name used in the avatar proxy URL path segment.

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