fix: Update JSON Schema for expressions in Studio with new functions

[TomasEng]

Description

This pull request updates the JSON Schema used in the expression editor in studio with the recently added functions.

Current:

This pull request:

Verification

• Related issues:
  • Add sum expression app-frontend-react#4191
  • Add average expression app-frontend-react#4193
  • Add list count expression app-frontend-react#4192
• Your code builds clean without any errors or warnings
• Manual testing done (required)
• No need to add tests. JSON Schema validation is already covered by existing tests.

Summary by CodeRabbit

• New Features
  • Expanded numeric expression support to include aggregation functions for sum, average, and count.
  • Added validation for these new aggregation formats, enabling them anywhere numeric expressions are used.

[coderabbitai]

Caution

Review failed

The head commit changed during the review from 0d6d79c to cb3af8e.

📝 Walkthrough

Walkthrough

The schema for strict-number now includes func-sum, func-average, and func-count, and adds JSON schema definitions for all three numeric function forms.

Changes

Numeric expression schema extensions

Layer / File(s)	Summary
Strict-number function forms src/Designer/frontend/libs/studio-components/src/components/StudioExpression/validators/expression.schema.v1.json	Extends strict-number.anyOf with func-sum, func-average, and func-count, and adds JSON schema definitions for the new function shapes.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• Altinn/altinn-studio#19254: Also updates expression.schema.v1.json by expanding strict-number with additional numeric function forms.

Suggested labels

area/studio-components

Suggested reviewers

• ErlingHauan
• olavsorl

Poem

🐇 I hop through JSON, neat and bright,
With sum, average, and count in sight.
strict-number grows with every bite,
A rabbit’s nibble, tidy and light.
Hop hop! ✨

🚥 Pre-merge checks | ✅ 4

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly states the schema update and the addition of new expression functions.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Description check	✅ Passed	The description covers the change summary, screenshots, and verification items, with only minor template details left implicit.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch update-json-schema-for-expressions-with-sum-and-average

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In
`@src/Designer/frontend/libs/studio-components/src/components/StudioExpression/validators/expression.schema.v1.json`:
- Around line 688-705: The sum/average schemas currently point to the generic
list definition, so they allow non-numeric values instead of only number lists.
Update the argument schema used by func-sum and func-average in
expression.schema.v1.json to reference a numeric-list definition (for example a
new helper definition) rather than `#/definitions/list`, and make sure it covers
only numeric list literals plus any explicitly supported list-producing
expressions. Use the existing func-sum and func-average symbols to locate the
affected entries and keep their array shape unchanged aside from the tightened
argument validation.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: 4b3f44ac-8f3b-4865-9fc8-0a85c3113793

📥 Commits

Reviewing files that changed from the base of the PR and between 94ad4c0 and eb6deb6.

📒 Files selected for processing (1)

• src/Designer/frontend/libs/studio-components/src/components/StudioExpression/validators/expression.schema.v1.json

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.86%. Comparing base (070c7ab) to head (fb34cfd).
⚠️ Report is 227 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #19364      +/-   ##
==========================================
+ Coverage   95.84%   95.86%   +0.01%     
==========================================
  Files        3028     3024       -4     
  Lines       39819    39548     -271     
  Branches     4910     4866      -44     
==========================================
- Hits        38166    37914     -252     
+ Misses       1235     1223      -12     
+ Partials      418      411       -7     

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