feat(gui): read the schema's constraints in the property panel

[kz930]

What changes were proposed in this PR?

The property panel reads the constraints the schema declares.

A column property is checked against the attribute type rule for every column it names rather than only the first. A hyperparameter's value renders as the control its parameter implies: a dropdown where the accepted set is known, a number input where it is numeric, a plain text box where the rules say nothing. A property declared unique among rows says which row already holds the value, and a row deleted clears the error it left behind, since deleting a row changes no surviving control's value and the row left behind would otherwise keep an error about a duplicate that is no longer there.

#8350 is the export button; this one is a separate thread of work.

Any related issues, documentation, discussions?

Part of #8325, 26 of 27; that issue lists the set in order.

Closes #8510, the task this change is the whole of.

Supersedes #7983, #7980 and the frontend half of #7946, which are closed in favour of this. They touched the same three files, so reviewing them apart meant reading the same code more than once and resolving a conflict between them at merge.

Closes #7981. Part of #7979, #7952 and #7936, whose remaining half is in #8348; those three stay open until both land, since each is only fixed once the schema declares the rule and the panel enforces it.

How was this PR tested?

formly-utils.spec.ts covers the mapping from a declared rule to a control and the type checking across every named column. constrained-value.component.spec.ts covers what each control renders. operator-property-edit-frame.component.spec.ts drives the rendered form, including the click that deletes a duplicate row and the error it has to clear.

Was this PR authored or co-authored using generative AI tooling?

Generated-by: Claude Code (Claude Opus 5)

🤖 Generated with Claude Code

[github-actions]

Automated Reviewer Suggestions

Based on the git blame history of the changed files, we recommend the following reviewers:

• Contributors with relevant context: @aglinxinyuan, @aicam, @Ma77Ball
  You can notify them by mentioning @aglinxinyuan, @aicam, @Ma77Ball in a comment.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 91.50943% with 9 lines in your changes missing coverage. Please review.
✅ Project coverage is 92.72%. Comparing base (ca6316c) to head (e802643).

Files with missing lines	Patch %	Lines
...it-frame/operator-property-edit-frame.component.ts	86.11%	2 Missing and 3 partials ⚠️
frontend/src/app/common/formly/formly-utils.ts	95.83%	0 Missing and 2 partials ⚠️
...t/constrained-value/constrained-value.component.ts	90.47%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #8507      +/-   ##
============================================
- Coverage     92.73%   92.72%   -0.02%     
  Complexity     4926     4926              
============================================
  Files          1241     1242       +1     
  Lines         52476    52564      +88     
  Branches       6475     6505      +30     
============================================
+ Hits          48662    48738      +76     
- Misses         2206     2210       +4     
- Partials       1608     1616       +8     

Flag	Coverage Δ		*Carryforward flag
access-control-service	77.38% <ø> (ø)		Carriedforward from f24dab0
agent-service	99.16% <ø> (ø)		Carriedforward from f24dab0
amber	88.43% <ø> (ø)		Carriedforward from f24dab0
computing-unit-managing-service	55.24% <ø> (ø)		Carriedforward from f24dab0
config-service	87.37% <ø> (ø)		Carriedforward from f24dab0
file-service	81.53% <ø> (ø)		Carriedforward from f24dab0
frontend	96.50% <91.50%> (-0.04%)	⬇️
notebook-migration-service	83.73% <ø> (ø)		Carriedforward from f24dab0
pyamber	98.48% <ø> (ø)		Carriedforward from f24dab0
workflow-compiling-service	74.09% <ø> (ø)		Carriedforward from f24dab0

*This pull request uses carry forward flags. Click here to find out more.

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

🚀 New features to boost your workflow:

• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[kz930]

/request-review @aglinxinyuan

[carloea2]

The schema rules and row revalidation look good.

[aglinxinyuan]

LGTM!