fix(robot): handle empty permissions in robot view

[Jay2006sawant]

Description

• Fixes [bug]: robot view panics when robot has empty permissions #997

harbor robot view panics when the Harbor API returns a robot with an empty or nil permissions array. The view indexed robot.Permissions[0] unconditionally, while harbor robot list already guarded this case.

This PR adds safe fallbacks for the permission count and project namespace header, matching the list view behavior.

Type of Change

• Bug fix
• New feature
• Refactor
• Documentation update
• Chore / maintenance

Changes

• Add robotPermissionSummary helper to safely read permission count and namespace
• Use placeholders (0, --) when permission details are missing
• Add unit tests for nil/empty and populated permissions

Test plan

• go test ./pkg/views/robot/view/... -v
• Verified robotPermissionSummary returns safe defaults for nil/empty permissions (no index panic)

[Jay2006sawant]

@Vad1mo Can you please look into this?

[NucleoFusion]

I dont think so we can create robots with 0 permissions. (I confirmed you cant)
But i think the gaurd is not a bad to have.
@qcserestipy what do you think? Should we have it or is it redundant?

[codecov]

Codecov Report

❌ Patch coverage is 62.50000% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 9.19%. Comparing base (60ad0bd) to head (760570b).
⚠️ Report is 188 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/views/robot/view/view.go	62.50%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##             main    #998      +/-   ##
=========================================
- Coverage   10.99%   9.19%   -1.80%     
=========================================
  Files         173     321     +148     
  Lines        8671   16088    +7417     
=========================================
+ Hits          953    1480     +527     
- Misses       7612   14474    +6862     
- Partials      106     134      +28     

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[qcserestipy]

@NucleoFusion I think we could get this into the code. I would be curious to know how this issue was found if the cli and ui both do not allow to create robots with 0 permissions in practice @Jay2006sawant.