test: TopBar auto-dismiss countdown bar, TransactionPanel asset memo type selector, ContractEventFeed value Show-more toggle

[k-deejah]

Problem

Three test gaps leave TransactionHistory row features, ContractEventFeed filter state, and AccountScreen Friendbot link untested.

1. TxRow feePaid display and operationCount badge are untested

After issues #51 and #84, TxRow shows feePaid and a multi-op badge. No test verifies: feePaid value renders in the row, operationCount > 1 shows the badge, operationCount === 1 hides it.

2. ContractEventFeed "last updated" timestamp updates every second

After issue #59, the "last updated" timestamp renders in the header. No test verifies: the timestamp renders after a poll completes, advancing fake timers by 60 seconds changes the relative time string from "just now" to "1m ago".

3. AccountScreen Friendbot link renders on testnet only

After issue #81, a Friendbot link appears on testnet with zero balances. No test verifies: the link appears on testnet with balances: [], does not appear on mainnet, and does not appear on testnet with non-empty balances.

Solution

Write Vitest tests with vi.useFakeTimers() for the timestamp test and mock context for the network-conditional tests.

Acceptance Criteria

• TxRow feePaid and multi-op badge tests pass
• ContractEventFeed "last updated" relative time test passes
• AccountScreen Friendbot link conditional tests pass
• All tests pass with npm test

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Note for Contributors: Write a clear PR description. Include the full npm test output.

[Frontman-Code]

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[femiolutayo]

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[mikevill20]

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[frankrichard99]

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