fix(ui): truncate long identifiers

[miclle]

Summary

• truncate long job and workflow labels in the ordinary-user Jobs view
• constrain long runner identifiers in admin overview cards and runner request rows
• cap long runner spec, group, and policy table columns without affecting status or action columns

Why

Long workflow and runner identifiers could expand flex and table content beyond the intended layout instead of displaying an ellipsis.

Validation

• npm run lint
• npm run build

[gemini-code-assist]

Code Review

This pull request introduces layout improvements across several UI components by adding text truncation and max-width constraints to prevent overflow. The reviewer feedback correctly points out that applying truncation classes directly to TableCell elements is unreliable due to their default display: table-cell styling. It is recommended to wrap the text content in block-level elements, such as a div, and apply the truncation and max-width classes to those inner elements instead.

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[fennoai]

No issues found in this review. I reviewed the changed UI truncation classes across the admin tables, overview cards, runner requests list, and user dashboard job fields.

Verification not run: review-only pass; dependencies are not installed in ui/node_modules.