Add comprehensive Maestro E2E coverage for wallet connection error paths

[Lakes41]

• Difficulty: Advanced
• Type: test
• Background: The existing .maestro/ suite (per README) covers onboarding, manual entry, guild navigation, access checks, and app reset, but not wallet-connection failure modes (relevant once Issue Add push notification registration and preferences #21 lands).
• Problem: Wallet connection is a high-risk, multi-step external-dependency flow (deep linking out to wallet apps and back) prone to regressions that unit tests can't catch.
• Expected outcome: New Maestro flows covering: user cancels connection in the wallet app, connection times out, connection succeeds but returns an unsupported chain, and reconnect-after-disconnect.
• Suggested implementation: Add new .maestro/*.yaml flow files following existing naming conventions (e.g., 06-wallet-connect-cancel.yaml); document any required mocking/stubbing of the wallet app interaction for deterministic local runs.
• Acceptance criteria: New flows are documented in .maestro/README.md; each flow asserts a specific, distinct end state; flows run successfully against a local development build per the README's E2E instructions.
• Likely affected files/directories: .maestro/
• Labels: test, GrantFox OSS, Maybe Rewarded, Official Campaign | FWC26

[ghg001]

Hi Maintainer,I'll extend the existing Maestro E2E suite with deterministic wallet connection failure scenarios, document the required mocks/stubs, and ensure each flow validates a distinct end state while remaining reliable for local development runs.

[OpensrcLord]

Hello @maintainer, I’ve gone through the requirements and I’m confident I can implement a proper solution that matches the acceptance criteria. Kindly assign this issue to me. And I will deliver at the shortest possible time.

[grantfox-oss]

🦊 GrantFox — @ghg001 has been assigned to this issue as part of the Official Campaign | FWC26 campaign!

Next steps:

1. Open a Pull Request referencing this issue (e.g., Closes #101)
2. Your PR will be reviewed by the Adamantine-guild maintainers

Good luck! Track your progress on GrantFox.

[grantfox-oss]

🎉 This issue has been marked as completed on GrantFox!

@ghg001's PR #292 was approved and merged by @Lakes41.

🏆 @ghg001: You earned 35 FoxPoints for this contribution! Your current tier: Explorer (96 total points). Track your full progress on GrantFox.

👏 Great work, @ghg001! Keep contributing to Adamantine-guild.