# Known-Family Timeout Diagnostic Report

> Date: 2026-04-19
> Roadmap: `docs/superpowers/plans/2026-04-19-102-full-sweep-improvement-roadmap-plan.md`
> Result: `tests/fixtures/generated_scene/known_family_timeout_diagnostic_2026-04-19.json`

## Scope

This report covers only the `4` records labeled `timeout-known-family-sample` by the full-sweep triage.

No scene status was promoted from this diagnostic.

## Result

| Scene | Group | Diagnostic result |
| --- | --- | --- |
| `台区线损大数据-月_周累计线损率统计分析` | `G2` | `known-family-rerun-pass` |
| `白银线损周报` | `G2` | `known-family-rerun-pass` |
| `线损同期差异报表` | `G2` | `known-family-rerun-pass` |
| `线损大数据-窃电分析` | `G2` | `known-family-rerun-pass` |

All four completed as `multi_mode_request` with readiness `A` after the bounded source-scan improvement.

## Interpretation

The known-family timeout bucket was not a family capability failure. It was dominated by source-scale scanning cost from large static/vendor files.

The diagnostic removes the main ambiguity from the timeout bucket: current `G2` code-backed samples can complete when scanning is bounded.

## Stop Statement

This diagnostic does not promote scenes and does not update the execution board.