DESCRIBE PAGE output is rejected by mxcli's own check --references (duplicate derived widget names)

[Chendodelangen]

DESCRIBE PAGE output is rejected by mxcli's own check --references (duplicate derived widget names)

• mxcli version: v0.19.0 (2026-08-21T13:13:26Z)
• Mendix version: 11.12.2
• Severity: Low/Medium — breaks the documented capture-and-regenerate workflow for pages: the tool's own output does not pass its own validation.
• Tracker searches: "describe round-trip", "describe output", "duplicate widget name describe" → describe microflow drops the offset and limit of a Range list operation #966, DESCRIBE ASSOCIATION emits DELETE_CASCADE but parser only accepts CASCADE #388, roundtrip for @merge does not work #923, DESCRIBE PAGE silently omits List View specialization templates; SHOW REFERENCES and SEARCH do not index their contents #940 are other describe round-trip gaps; none covers widget naming.

Steps to reproduce

1. Take any page built in Studio Pro with several layout grids (each having rows/columns Studio Pro left unnamed).
2. mxcli describe page Module.Page -p app.mpr > page.mdl
3. mxcli check page.mdl -p app.mpr --references

Expected

The describe output validates: it is the tool's own rendering of a valid page.

Actual

- duplicate widget name 'row1' (used 4 times) — Mendix requires unique widget names per page (CE0495)
- duplicate widget name 'col1' (used 4 times) — Mendix requires unique widget names per page (CE0495)
- duplicate widget name 'template1' (used 4 times) — Mendix requires unique widget names per page (CE0495)

The names are derived at describe time (renaming them uniquely in the script and re-executing yields a read-back with row1/col1 again), so describe manufactures collisions its own checker rejects. Combined with <unbound> params in output (#565) a captured page always needs hand-editing before it can be replayed.

Suggested fix

Derive unique names on describe (row1, row2, ... page-wide), or accept duplicate derived names for widgets whose names are not stored.

• Diagnostic bundle: available, mxcli-diag-20260827-184627.tar.gz