feat: detect swap for LS2, avnu

[rsodre]

• generic swap detection (one endpoint array for each type)
• detect avnu swap and display swap review screen
• detect LS2 purchase game as a single swap and display swap review screen
• removed additional tx count from Swap button
• misc layout updates

[vercel]

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Project	Deployment	Actions	Updated (UTC)
controller-example-next	Ready	Preview	Mar 24, 2026 4:09pm
keychain	Ready	Preview	Mar 24, 2026 4:09pm
keychain-storybook	Ready	Preview	Mar 24, 2026 4:09pm

[claude]

Claude finished @rsodre's task —— View job

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Documentation Analysis Complete

Tasks:

• Analyze PR changes to understand user-facing impact
• Check if documentation updates are needed per the rules
• Determine final action

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Analysis Summary

The PR #2493 adds internal support for detecting swap transactions from multiple DEX protocols (AVNU, Ekubo) and LS2 game purchases. The changes include:

1. Generic swap detection system - Pattern-based approach supporting multiple DEX types
2. AVNU DEX support - New ABI and detection for multi_route_swap entrypoint
3. LS2 game purchase detection - Special handling to display as a swap transaction
4. UI improvements - Enhanced swap review screen, layout updates

Documentation Decision: NO UPDATES NEEDED

Reasoning:

Following the provided rules (particularly "DEFAULT TO NO CHANGES"), documentation updates are not required because:

1. Internal implementation detail: The swap detection logic is an internal feature that automatically recognizes and displays swap transactions. Users don't need to configure or interact with it differently.

2. No API changes: There are no new public APIs, configuration options, or integration steps that developers need to know about. The changes are purely internal to the keychain UI.

3. No documented behavior changes: The existing documentation doesn't describe swap detection mechanisms. The docs mention:

   • Layerswap for cross-chain bridging (in starter-packs.md and coinbase-onramp.md)
   • Session policies for transaction approval (in sessions.md)
   • But nothing about internal transaction detection or DEX integrations

4. Enhanced UX, not new feature: This PR improves how existing swap transactions are displayed in the UI. Users already perform swaps through these DEXes; the PR just makes the Controller better at recognizing and presenting them.

5. Example code only: The changes to examples/next/src/components/Swap.tsx are just test examples showing different swap patterns - not meant for user documentation.

Conclusion: This is an internal refactoring and enhancement that doesn't affect the documented user-facing API or configuration. The documentation remains accurate and complete without any updates.

--- | Branch: claude/pr-2493-20260324-1705