Defect: AD-002: Picker-applied enum and regex rows accept visible values but preview produces no data

[eviltester]

Parent testing issue: #1

Source defect report: https://github.com/eviltester/anywaydata-ai-testing/blob/main/docs/testing/20260625/issue-230-001/defects/AD-002-core-enum-regex-picker-preview-no-output.md
Testing artifact folder: https://github.com/eviltester/anywaydata-ai-testing/tree/main/docs/testing/20260625/issue-230-001
Original grid-table-editor story: eviltester/grid-table-editor#230
Original grid-table-editor PR: eviltester/grid-table-editor#247

The detailed defect report from the testing artifact is copied below.

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AD-002: Picker-applied enum and regex rows accept visible values but preview produces no data

Severity: Medium

Status: confirmed repeatable for enum and regex; literal works through the same picker flow.

Environment

• URL: https://eviltester.github.io/grid-table-editor/generator.html
• Test environment branch/commit: codex/230-method-picker-mvc / 04570e0e428d
• Evidence files: ../support/enum-via-picker-repeat.json, ../support/loop2-focused-rechecks.json, ../support/loop1-command-runtime-matrix.json
• Screenshots: ../screenshots/enum-via-picker-after-fill.png, ../screenshots/loop2-core-enum-via-picker.png, ../screenshots/loop2-core-regex-via-picker.png

Steps to Reproduce

1. Open the deployed generator.
2. In the first schema row, set field type to domain so the method picker trigger is visible.
3. Click Select domain command.
4. Search for enum, select the core enum tile, and click Apply.
5. Enter column name Status and visible value alpha,beta,gamma.
6. Click Preview.
7. Repeat with regex and visible value [A-Z]{2}[0-9]{2}.

Expected Result

After applying a core command from the method picker and filling its visible value field, Preview should generate data just as direct row selection does.

Actual Result

• For enum, the row initially continues to show Row 1: enum value is required. after the visible value is filled.
• Preview clears the schema error but produces no output.
• For regex, the same pattern occurs: visible value is present, prior required-value text is shown, Preview produces no output.
• A direct row-mode matrix where enum/regex are selected without the method picker generated valid output, and picker-applied literal also generated output.

Notes

This looks specific to the core command transition through the new method picker path. It is important because the picker exposes Core commands in the All tab, so users can naturally select them from the dialog.

[eviltester]

Cannot recreate - screenshots do not suggest a problem