fix: add missing workloadName for CodeInterpreter sandboxes

[HarshitPal25]

What this PR does

In buildSandboxByCodeInterpreter, the buildSandboxParams never sets the
workloadName field, causing the WorkloadNameLabelKey label to be empty
on all CodeInterpreter Sandbox objects.

The AgentRuntime path (buildSandboxByAgentRuntime) correctly sets
workloadName at line 274:

buildParams := &buildSandboxParams{
    namespace:    namespace,
    workloadName: name,  //  present here
    ...
}

But the CodeInterpreter path at line 425 does not:

buildParams := &buildSandboxParams{
    sandboxName: sandboxName,
    namespace:   namespace,
    // workloadName is MISSING 
    ...
}

Impact

CodeInterpreter sandboxes are missing the runtime.agentcube.io/workload-name label
This affects label-based queries and debugging for CodeInterpreter workloads

Fix

Added workloadName: codeInterpreterName to match the AgentRuntime pattern.

[volcano-sh-bot]

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[Copilot]

Pull request overview

Fixes missing runtime.agentcube.io/workload-name labeling for CodeInterpreter sandboxes generated by the Workload Manager, aligning CodeInterpreter sandbox construction with the existing AgentRuntime path.

Changes:

• Populate buildSandboxParams.workloadName in buildSandboxByCodeInterpreter so WorkloadNameLabelKey is set on created Sandbox objects.

[codecov-commenter]

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Codecov Report

❌ Patch coverage is 0% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 47.74%. Comparing base (524e55e) to head (f0039a5).
⚠️ Report is 22 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/workloadmanager/workload_builder.go	0.00%	1 Missing ⚠️
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Additional details and impacted files

@@            Coverage Diff             @@
##             main     #310      +/-   ##
==========================================
+ Coverage   47.57%   47.74%   +0.17%     
==========================================
  Files          30       30              
  Lines        2819     2855      +36     
==========================================
+ Hits         1341     1363      +22     
- Misses       1338     1344       +6     
- Partials      140      148       +8     

Flag	Coverage Δ
unittests	47.74% <0.00%> (+0.17%)	⬆️

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[gemini-code-assist]

Code Review

This pull request updates the buildSandboxByCodeInterpreter function to include the workloadName in the sandbox build parameters. However, the feedback indicates that the implementation is incomplete as it misses applying the WorkloadNameLabelKey label to the warm pool path, specifically for the simpleSandbox and SandboxClaim objects.

[gemini-code-assist]

While this change correctly addresses the missing workloadName for the direct sandbox creation path, the fix appears incomplete based on the PR description. The WorkloadNameLabelKey label is still missing in the warm pool path (when WarmPoolSize > 0). Specifically, the simpleSandbox object created at line 384 and the SandboxClaim created at line 371 should also include the WorkloadNameLabelKey label to ensure consistency across all CodeInterpreter workloads.