v0.2.8

Release v0.2.8

Features:
- Inspector panel redesigned with smart sections (Identity, People, Planning, Status, Labels)
- Full name display for author, assignee and reviewers
- merged_by / merged_at shown in Status section for merged MRs
- git clone yank shortcut [Y] copies SSH clone command to clipboard
- Milestone due date with urgency colour coding (red/yellow/green)
- Milestone autocomplete and bulk-add MRs for release managers
- Interactive first-run prompt for gitlab_url and project_id
- Pipeline created_at date displayed and persisted

Fixes:
- Force pipeline jobs re-fetch when cache has no jobs

Refactoring:
- Removed [X] key binding for MR deletion, [Del] only"