Wire the bare `gitea-axi` home command to a two-tier repository
dashboard (ADR 0012): the short tier shows up to 3 open issues and 3
open PRs with the client-side `review` decision, and `--full` shows the
20-row open-PR table plus open issue counts grouped by label, aggregated
across every page of open issues up to the 1000-issue cap with a `+`
suffix when capped. Empty states render the raw `prs: 0 open` /
`issues: 0 open` strings; issue fetches pass `type=issues`; outside a
Gitea repo the dashboard errors with REPO_NOT_FOUND.
`paginate.ts` now reports whether pagination stopped at the cap, which
drives the label-count `+` suffix.
Finish the `issue list` flag surface left minimal by the tracer slice:
- Server-side filters `--label`, `--assignee`, `--author`, `--milestone`,
mapped to Gitea's `labels`, `assigned_by`, `created_by`, `milestones`.
- Client-side `--sort <created|updated|comments>`, always descending, over
the fully paginated set (ADR 0005); `--limit` caps the sorted result.
- `--fields` exposing body, closedAt, labels, milestone, updatedAt, url.
- `--search` refused with a VALIDATION_ERROR redirecting to `search issues`.
Exhaustive pagination lands as a shared `paginate.ts`, since ADR 0005 makes
it a policy later slices reuse; `lookup.ts` drops its hand-rolled copy of the
same loop. The helper carries the 20-page cap that copy encoded, matching the
1000-item ceiling Principle 8 sets.
