`ALTER SNIPPET` looks up page namespace instead of snippet namespace

[retran]

Impact

ALTER SNIPPET is non-functional — always fails with "page not found" even when snippet exists.

Steps to Reproduce

./mxcli -p project.mpr -c "DESCRIBE SNIPPET Module.MySnippet"
# Works — snippet exists

./mxcli -p project.mpr -c "ALTER SNIPPET Module.MySnippet { SET Title = 'Test' }"
# Error: page not found: Module.MySnippet

Root Cause

ALTER SNIPPET searches the page registry instead of the snippet registry.

Comparison

Command	Target exists	Result
ALTER PAGE Module.MyPage	Yes	Works
ALTER SNIPPET Module.MySnippet	Yes	"page not found"

Expected Behavior

ALTER SNIPPET operates on the snippet registry, matching DESCRIBE SNIPPET behavior.

Severity

Medium — no workaround for in-place snippet modification.

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Discovered during AI-assisted manual testing session (2026-04-29, mxcli v0.7.0-257-ga07e7e0).

[github-actions]

Issue Triage

Summary:
The ALTER SNIPPET command incorrectly looks up snippets in the page registry, causing a “page not found” error even when the snippet exists.

Checklist of required bug‑report information

Required info	Present?	Details
mxcli version	✅	v0.7.0-257-ga07e7e0 (from the issue)
Mendix version	❌	Not specified
Scenario (what the user was trying to do)	✅	Running ALTER SNIPPET Module.MySnippet { SET Title = 'Test' } via mxcli
Expected output	✅	Command should succeed, modifying the snippet (behaviour like DESCRIBE SNIPPET)
Experienced output	✅	Error: page not found: Module.MySnippet
AI bug report (mxcli diag --bundle or session log)	❌	Not provided

What’s missing:

• The Mendix version of the project being processed.
• The output of mxcli diag --bundle (or at least the relevant session log) to help reproduce the environment.

Could you please add the Mendix version and attach the diagnostic bundle (or the relevant log) when you have a moment? Thanks for the clear reproduction steps – with those extra details we’ll be able to investigate and fix the issue quickly.

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