docs: align expo automation and compatibility runbooks

[cursor]

Summary

• update the Expo automation test design doc with quick start steps, runtime constraints, and troubleshooting guidance verified against the current implementation
• refresh the automation scenario matrix and UI file references to match the current scenarioCatalog and screen structure
• expand the device method support doc with override rule semantics, current consumers, and a maintenance workflow

Covered codepaths

• packages/connect-examples/expo-example/src/testTools/automationTest/*
• packages/connect-examples/expo-example/src/services/phonePilotMcp/*
• packages/connect-examples/expo-example/src/atoms/automationAtoms.ts
• packages/connect-examples/expo-example/src/testTools/deviceCompatibility/*
• packages/connect-examples/expo-example/src/testTools/securityCheckTest/blindSignature/utils.ts

Knowledge gaps addressed

• how to start and operate the Expo automation runner in each device preparation mode
• which scenarios actually support specialPassphrase, securityCheck, and chainMethodBatch
• how device compatibility overrides are matched, consumed, and maintained without hiding real device errors

  

[revan-zhang]

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