docs: session key docs blitz

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Pull Request Checklist

• Did you add new tests and confirm existing tests pass? (yarn test)
• Did you update relevant docs? (docs are found in the site folder, and guidelines for updating/adding docs can be found in the contribution guide)
• Do your commits follow the Conventional Commits standard?
• Does your PR title also follow the Conventional Commits standard?
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PR-Codex overview

This PR focuses on adding documentation for session keys, detailing their permissions and implementation in Smart Wallets, enhancing user understanding and usage of session keys for transaction automation.

Detailed summary

• Added session-keys section in docs/docs.yml.
• Created Permission Types page with detailed descriptions and examples of permission types.
• Added Use session keys page explaining session key functionality and benefits.
• Included implementation examples in React and JavaScript.
• Updated API documentation for session key creation and usage.

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Project	Deployment	Preview	Comments	Updated (UTC)
aa-sdk-ui-demo	Ready	Preview	Comment	Sep 18, 2025 11:06pm

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Name	Status	Preview	Updated (UTC)
Alchemy Docs	✅ Ready	🔗 Visit Preview	Sep 18, 2025, 11:04 PM