Intent of read_ shell tools getToolKind returns subagent for task|occurrence=1

All 5 exact tests in this concept. Every test is marked by where it enters the hierarchy.

mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/ 5 tests
- platform/ 5 tests
  - agentHost/ 5 tests
    
    test/ 5 tests
    
    node/ 5 tests
    
    copilotToolDisplay.test|title=copilotToolDisplay — write_/ 1 test
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/platform/agentHost/test/node/copilotToolDisplay.test|title=copilotToolDisplay — write_/read_ shell tools getToolKind returns subagent for task|occurrence=1 Introduced here
    
    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
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/platform/agentHost/test/node/copilotAgentSession.test|title=CopilotAgentSession event mapping subagent message delta does not suppress final parent assistant message|occurrence=1 Inherited copilotAgentSession.ts ×5
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/platform/agentHost/test/node/mapSessionEvents.test|title=mapSessionEvents — subagent routing routes subagent skill events into the subagent transcript|occurrence=1 Inherited mapSessionEvents.ts ×3