Intent of copilotSessionLauncher.ts ×2

All 4 exact tests in this concept. Every test is marked by where it enters the hierarchy.

mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/ 4 tests
- platform/ 4 tests
  - agentHost/ 4 tests
    
    test/ 4 tests
    
    node/ 4 tests
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/platform/agentHost/test/node/copilotAgent.test|title=CopilotAgent quick chat scratch directory resume recreates a reaped quick chat scratch dir (ensure-exists on restore)|occurrence=1 Inherited copilotAgent.ts ×3
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/platform/agentHost/test/node/copilotSessionLauncher.test|title=CopilotSessionLauncher resume fallback does not replace a corrupted session file with an empty session|occurrence=1 Inherited copilotSessionLauncher.test|title=CopilotSessionLauncher resume fallback does not replace a corrupted session file with an empty session|occurrence=1
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/platform/agentHost/test/node/copilotSessionLauncher.test|title=CopilotSessionLauncher resume fallback falls back to createSession after a Start Over truncate leaves the session empty|occurrence=1 Inherited copilotSessionLauncher.ts ×1
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/platform/agentHost/test/node/copilotSessionLauncher.test|title=CopilotSessionLauncher resume fallback falls back to createSession for an unknown -32603 from resumeSession|occurrence=1 Inherited copilotSessionLauncher.ts ×1