feat: add controller info API and show it in Version Details

[suryapratap-01]

What this PR does / why we need it

Show numaflow-controller version and scope in the UI Version Details sidebar (separate from UX server /sysinfo).

• Add GET /api/v1/namespaces/:namespace/controller-info
• Display controller details in Version Details; fall back to managed namespace when not found
• Improve Version Details styling (including dark mode) and fix sidebar scroll clipping

Related issues

Fixes #

Testing

• make test
• yarn --cwd ui test --watchAll=false -t "VersionDetails|controllerInfo"
• Manual: open Version Details and confirm controller version/image/scope

Special notes for reviewers

• The /sysinfo endpoint remains unchanged this is a new route
• Missing controller returns found:false (HTTP 200) so the UI can retry another namespace

[vigith]

can you rename server to UI Server and is it possible to add Rust based data plane details too?

[suryapratap-01]

Hey @vigith, I’ve updated server to UI Server.

I’d like to confirm the second part for the Rust data plane section. Should I display the NUMA container image/tag from the pods, following the same pattern as controller-info, or expose the full binary build information—such as Version, GitCommit, and RustVersion—through a new data plane /version endpoint or a build_info metric?

If the full build information is required, I’ll include it in a second PR.

[vigith]

@suryapratap-01 don't worry if it is too complex? 😄

[codecov]

Codecov Report

❌ Patch coverage is 77.70270% with 33 lines in your changes missing coverage. Please review.
✅ Project coverage is 83.52%. Comparing base (0069107) to head (7fe255e).

Files with missing lines	Patch %	Lines
server/apis/v1/response_controller_info.go	81.65%	13 Missing and 7 partials ⚠️
server/apis/v1/controller_info.go	67.56%	8 Missing and 4 partials ⚠️
server/routes/routes.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##             main    #3555    +/-   ##
========================================
  Coverage   83.51%   83.52%            
========================================
  Files         311      313     +2     
  Lines       83097    83245   +148     
========================================
+ Hits        69402    69529   +127     
- Misses      13102    13112    +10     
- Partials      593      604    +11     

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[adarsh0728]

@suryapratap-01 added a commit/fix, please check and verify if its working fine.

[suryapratap-01]

@suryapratap-01 added a commit/fix, please check and verify if its working fine.

Yes it is

[adarsh0728]

@suryapratap-01 added a commit/fix, please check and verify if its working fine.

Yes it is

Lets test it internally in one of our clusters with different ui server versions

[suryapratap-01]

@adarsh0728 Tested internally by swapping only the UI server image (controller left unchanged).

Controller details are read from the numaflow-controller Deployment via the new UX-server API — not from controller code — so comparing UI server versions is enough.

New (feat-controller-info-api-7fe255e): UI Server + Controller section shown
Old (main-0069107): server only, no Controller section

Also verified failure handling: if controller-info can’t be fetched, the Controller section shows Unable to load controller details: … and the rest of the UI still works.

[yhl25]

Apart from version, scope and data plane mode(rust or golang), I don't see much value in showing other fields.

[adarsh0728]

Remove unnecessary fields from server version details, think on the sidebar trigger - at cluster level if user has already checked the server version, its not intuitive that he will check it again. There should be some distinct icon to show controller version.