Intent of claudeProxyService.ts ×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 GET / 3 tests
    
    v1/ 3 tests
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/platform/agentHost/test/node/claudeProxyService.test|title=ClaudeProxyService GET /v1/models non-CopilotApiError → 502 api_error|occurrence=1 Inherited models non-CopilotApiError → 502 api_error|occurrence=1
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/platform/agentHost/test/node/claudeProxyService.test|title=ClaudeProxyService GET /v1/models returns Page envelope with SDK-format IDs and filters by vendor + endpoint|occurrence=1 Inherited claudeProxyService.ts ×2
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/platform/agentHost/test/node/claudeProxyService.test|title=ClaudeProxyService GET /v1/models upstream CopilotApiError is re-emitted verbatim with original status|occurrence=1 Inherited models upstream CopilotApiError is re-emitted verbatim with original status|occurrence=1
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/platform/agentHost/test/node/claudeProxyService.test|title=ClaudeProxyService Auth Bearer <nonce>.<sessionId> → request proceeds|occurrence=1 Inherited claudeProxyService.ts ×4
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/platform/agentHost/test/node/claudeProxyService.test|title=ClaudeProxyService Token slot start() updates token slot last-writer-wins|occurrence=1 Inherited claudeProxyService.test|title=ClaudeProxyService Token slot start() updates token slot last-writer-wins|occurrence=1