Show work item title on pipeline detail page when triggered by a work it

[bamdadd]

Summary

Add work item title display to the pipeline detail page header by adding a conditional secondary useQuery for the work item, extending PageHeader with an optional subtitle link and loading skeleton, and guarding rendering on trigger_type and work_item_id — no backend changes required.

Changes

• Verify and update TypeScript types for PipelineRun and WorkItem
• Extend PageHeader component to support a subtitle link slot
• Add secondary work item query and conditional header display to pipeline detail page
• Add and update frontend tests for pipeline detail page and PageHeader

Context

When viewing a pipeline run that was triggered by a work item (trigger_type starts with "work_item:"), the pipeline detail page should display the work item title prominently — e.g. in the header or as a subtitle. Currently only the pipeline run ID and stages are shown, with no context about what work item triggered it.

Acceptance criteria:

• Pipeline detail page fetches the associated work item (via work_item_id on the pipeline run)
• Work item title is displayed in the pipeline header/breadcrumb area
• Title should link to the work item on the board
• If no work_item_id is set (e.g. chat-triggered pipelines), no title is shown

Review

✅ Automated review passed.

Tests

✅ All tests passing.

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Raised by Lintel 🤖

[bamdadd]

Agent review failed — defaulting to manual review.