2483 e embedded wallets pass

[m4sterbunny]

Description

First pass over the sdk folder to align with MM style

• Introduces Embedded Wallets brand ahead of Web3Auth where possible
• Improves internal consistency for terms eg:

url --> URL, id, Id --> ID, jwt --> JWT
bolding of colon in lists :** not **:
no caps when bolding eg: Key Configuration Options:

• Simplifies verbose language in some instances
• Simplifies mixed markdown/HTML tables to markdown (simplifies instances of table formatting for easier maintainer readability)
• Applies MM style such as no e.g., links on meaningful text not [here], single line following heading, and others
• Adds Embedded Wallet brand with /Web3Auth in suitable instances to reinforce brand
• Allows proper nouns for Embedded Wallets and Wallet Services, removes proper nouns from most other instances, eg Paymaster
• Reduces instances of developer dashboard in favor of brand Embedded Wallets dashboard
• Improves links between pages

Issue(s) fixed

Partial fix for #2483

Preview

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

Broad documentation pass to align with MetaMask style and Embedded Wallets branding.

• Replaces Web3Auth-first phrasing with “Embedded Wallets (Web3Auth)” and standardizes terms/capitalization (URL, ID, JWT, lowercase headings, consistent bolding) and dashboard references to Embedded Wallets dashboard
• Cleans up grammar, wording, and tables; improves cross-links and section titles (e.g., session management, UI customization, MFA)
• Substantial Android/Flutter docs refresh: clearer setup/prereqs, redirect/deep link handling, custom tabs notes, MFA and custom auth guidance, and multiple migration guides updated
• Minor snippet/param adjustments for consistency (e.g., clientId comments, “dapp share” phrasing, example paymaster/bundler config key casing)

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Project	Deployment	Review	Updated (UTC)
metamask-docs	Ready	Preview, Comment	Jan 8, 2026 5:27pm

[m4sterbunny]

can or does @yashovardhan?

[m4sterbunny]

brought in unused snippets page