Improved sync status UI, added elapsed sync timer, commit status column, and database type fixes

Live elapsed sync timer — Added a live elapsed-time display next to the sync status badge so you can see how long a sync run has been running. The timer derives its initial value from the run start time so it shows the correct duration even if you open the page mid-sync.
Per-commit processing status in commit history — Added a 'Status' column on larger screens to show whether each commit is Processed or Queued, making it easier to see pipeline progress at a glance.

Updated sync status labels to use sentence case and clearer wording (for example, 'Analyzing commit history' and 'Analyzing changelog entries').frontend

Added a SyncTimer component that displays the elapsed time (e.g. '2m 34s') next to the status badge while a sync run is in progress; it starts at the correct offset when rendered mid-sync.frontend

Added a 'Status' column to the commit history table on large screens showing 'Processed' (green) or 'Queued' (yellow) based on existing is_processed data — no backend changes required.frontend

Added missing TypeScript type aliases and JSONB interfaces in the database package (entitlement, sync status, changelog entry types, diff summaries, generated JSON shapes, and more) to resolve pre-existing build failures.database