Intent of historyRecordFixtures.ts ×2

All 3 exact tests in this concept. Every test is marked by where it enters the hierarchy.

mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/ 3 tests
- platform/ 3 tests
  - agentHost/ 3 tests
    
    test/ 3 tests
    
    node/ 3 tests
    
    historyRecordFixtures.test|title=mapSessionEventsToHistoryRecords skill events synthesizes tool start/ 1 test
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/platform/agentHost/test/node/historyRecordFixtures.test|title=mapSessionEventsToHistoryRecords skill events synthesizes tool start/complete from skill.invoked and filters synthetic skill-injected user messages|occurrence=1 Inherited historyRecordFixtures.ts ×2
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/platform/agentHost/test/node/agentService.test|title=AgentService (node dispatcher) restoreSession inner assistant messages from subagent do not create extra turns (fixture)|occurrence=1 Inherited copilotToolDisplay.ts ×7
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/platform/agentHost/test/node/agentService.test|title=AgentService (node dispatcher) restoreSession inner assistant messages from subagent route via envelope agentId (fixture)|occurrence=1 Inherited historyRecordFixtures.ts ×1