[Smart Accounts Kit] document utility for single delegation encode/decoding

[AyushBherwani1998]

Description

• Documents decodeDelegation and encodeDelegation functions in reference docs.

Issue(s) fixed

Fixes #

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Checklist

• If this PR updates or adds documentation content that changes or adds technical meaning, it has received an approval from an engineer or DevRel from the relevant team.
• If this PR updates or adds documentation content, it has received an approval from a technical writer.

External contributor checklist

• I've read the contribution guidelines.
• I've created a new issue (or assigned myself to an existing issue) describing what this PR addresses.

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Note

Low Risk
Low risk documentation-only change that adds reference docs for encodeDelegation/decodeDelegation and clarifies decodeDelegations usage; no runtime behavior is modified.

Overview
Adds reference documentation for the single-delegation utilities decodeDelegation and encodeDelegation, including parameters and usage examples.

Clarifies when to use decodeDelegations (for permission contexts containing delegation chains) versus decodeDelegation (for a single encoded delegation).

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Project	Deployment	Actions	Updated (UTC)
metamask-docs	Ready	Preview, Comment	Mar 3, 2026 9:37pm