Intent of count_tokens with bad auth → 401 (not 501)|occurrence=1, models with bad auth does not reach upstream|occurrence=1, +3

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
    
    claudeProxyService.test|title=ClaudeProxyService Auth auth-first precedence: GET / 1 test
    
    v1/ 1 test
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/platform/agentHost/test/node/claudeProxyService.test|title=ClaudeProxyService Auth auth-first precedence: GET /v1/models with bad auth does not reach upstream|occurrence=1 Introduced here
    
    claudeProxyService.test|title=ClaudeProxyService Auth auth-first precedence: POST / 2 tests
    
    v1/ 2 tests
    
    messages/ 1 test
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/platform/agentHost/test/node/claudeProxyService.test|title=ClaudeProxyService Auth auth-first precedence: POST /v1/messages/count_tokens with bad auth → 401 (not 501)|occurrence=1 Introduced here
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/platform/agentHost/test/node/claudeProxyService.test|title=ClaudeProxyService Auth auth-first precedence: POST /v1/messages with bad auth does not reach upstream|occurrence=1 Introduced here
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/platform/agentHost/test/node/claudeProxyService.test|title=ClaudeProxyService Auth Bearer <nonce>. (empty sessionId) → 401|occurrence=1 Introduced here
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/platform/agentHost/test/node/claudeProxyService.test|title=ClaudeProxyService Auth Bearer wrong-nonce.x → 401|occurrence=1 Introduced here