Fix tests that already fail on main

Fix the 15 tests that fail on main in a 2-core cloud workspace: 8 FrmClientTest GPG-agent failures plus ApprovalSeedCommandTest, LocalAppSmokeTest (3), ReadModelBuilderTimingTest, ReactionRecordFormatParityTest and TerminalOperatorUiCommandTest. A red default run currently needs manual comparison against main.

Follows thread-20261104020942-96f27522 (default test run under 2 minutes).