| Node | Covers | Typical artifact |
|---|---|---|
| File reading and formats | Whether what came in is right: text layers, merged cells, encoding | A 'what was actually read' check table |
| Output and file changes | Whether what went out is right, and whether the original changed | The artifact plus a hash check |
| Batches and deep directories | Many files, deep trees, how failures count | A batch result table including failures |
| Cleanup and rollback | What is left behind, and how to recover a bad delete | Leftover list or recovery procedure |
| Workspace index | Navigation for this group | (this page) |
One criterion runs through the group
Every entry answers the same question: how do I know it actually did it. Not 'it said it did' — independently verifiable evidence: character counts, hashes, totals equations, find counts.
That is also the division of labour with the prompt-writing group: that one makes the question clear, this one makes the verification real. You need both; either alone produces false confidence.