ROX-32852: Add filtering by cluster name

[mtodor]

Description

This PR is adding filtering by cluster name.

It first fetches the cluster to verify that the name exists and then uses the actual cluster ID in the query for a backend call. In that way, we can properly return an error if the cluster name does not exist.

Validation

• e2e test
• unit tests (new added)
• manual testing

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 78.22%. Comparing base (a950cd5) to head (4ff363f).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #39      +/-   ##
==========================================
+ Coverage   77.36%   78.22%   +0.86%     
==========================================
  Files          26       27       +1     
  Lines        1162     1208      +46     
==========================================
+ Hits          899      945      +46     
  Misses        223      223              
  Partials       40       40              

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[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 78.22%. Comparing base (a950cd5) to head (f4bf6dd).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #39      +/-   ##
==========================================
+ Coverage   77.36%   78.22%   +0.86%     
==========================================
  Files          26       27       +1     
  Lines        1162     1208      +46     
==========================================
+ Hits          899      945      +46     
  Misses        223      223              
  Partials       40       40              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[janisz]

is it full or partial match? Should we do a check before returning the [0] element if name really matches?

[mtodor]

It is full match. When query value is in quote, then it is "exact match". (as I remember)
Not sure about lower/upper cases.

EDIT:

• also added comment here about that:

  stackrox-mcp/internal/toolsets/vulnerability/deployments.go

  Line 152 in a950cd5

  // We will quote values to have strict match. Without quote: CVE-2025-10, would match CVE-2025-101.