# Orchestration Log Entry

### 2026-04-02T16-23-55Z - Focused diagnostics parity validation for issue #585

| Field | Value |
|-------|-------|
| **Agent routed** | Nate (Tester) |
| **Why chosen** | Needed focused regression coverage to prove the new CLI/MCP error envelope parity without reopening unrelated flake-heavy suites. |
| **Mode** | `sync` |
| **Why this mode** | The contract decision depended on surgical pass/fail evidence from targeted CLI, MCP, and protocol buckets. |
| **Files authorized to read** | `tests/ExcelMcp.CLI.Tests/**`, `tests/ExcelMcp.McpServer.Tests/**`, `src/ExcelMcp.Service/**`, `src/ExcelMcp.CLI/**`, `src/ExcelMcp.McpServer/**` |
| **File(s) agent must produce** | focused parity/protocol regressions, `.squad/decisions/inbox/nate-diagnostics-parity-tests.md` |
| **Outcome** | Completed — targeted #585-focused CLI/MCP validations passed, focused protocol buckets passed, and the remaining full-class MCP noise was identified as pre-existing `ProgramTransport` / session flake outside this slice. |
