FN-7425: add GitLab tracking metadata to tasks

Persist GitLab tracking metadata and surface it across task APIs and dashboard views.

- add task-store schema, migration, and update helpers for linked GitLab items and stale state
- expose validated GitLab tracking updates through task workflow routes and legacy task payloads
- render GitLab badges, detail-panel metadata, open/unlink actions, styling, i18n strings, and docs
- cover persistence, route validation, task card badges, and task detail interactions with tests
- add a patch changeset for the published Fusion package

Files changed:
 .changeset/fn-7425-gitlab-tracking.md              |   7 ++
 docs/cli-reference.md                              |   2 +-
 docs/dashboard-guide.md                            |   3 +
 packages/core/src/__tests__/db-migrate.test.ts     |  29 +++++
 .../src/__tests__/store-gitlab-tracking.test.ts    | 138 +++++++++++++++++++++
 packages/core/src/db.ts                            |  10 +-
 packages/core/src/gitlab-tracking.ts               |  10 ++
 packages/core/src/index.ts                         |   3 +-
 packages/core/src/store.ts                         | 135 +++++++++++++++++++-
 packages/core/src/types.ts                         |  49 ++++++++
 packages/dashboard/app/api/legacy.ts               |   3 +
 packages/dashboard/app/components/GitLabBadge.tsx  |  33 +++++
 packages/dashboard/app/components/TaskCard.tsx     |   7 +-
 .../dashboard/app/components/TaskCardBadge.tsx     |  15 ++-
 .../dashboard/app/components/TaskDetailModal.css   |  47 +++++--
 .../dashboard/app/components/TaskDetailModal.tsx   | 134 +++++++++++++++++++-
 .../app/components/__tests__/TaskCard.test.tsx     |  49 ++++++++
 .../TaskDetailModal.gitlab-tracking.test.tsx       | 121 ++++++++++++++++++
 .../__tests__/TaskDetailModal.test-helpers.ts      |   1 +
 packages/dashboard/app/styles.css                  |   9 ++
 .../src/__tests__/routes-tasks-ops.test.ts         | 136 ++++++++++++++++++++
 packages/dashboard/src/gitlab.ts                   |  24 +++-
 packages/dashboard/src/routes/register-gitlab.ts   |   1 +
 .../src/routes/register-task-workflow-routes.ts    | 106 +++++++++++++++-
 packages/i18n/locales/en/app.json                  |  31 +++++
 packages/i18n/src/resources.d.ts                   |  31 +++++
 26 files changed, 1106 insertions(+), 28 deletions(-)

Fusion-Task-Id: FN-7425

Fusion-Task-Lineage: 9b5e6005-7284-402e-995c-553be2275eff

Co-authored-by: Fusion (runfusion.ai) <noreply@runfusion.ai>

docs/cli-reference.md

@@ -649,7 +649,7 @@ Default behavior: PR title/body are AI-generated unless both `--title` and `--bo
 
 `fn task import` creates Fusion tasks from GitHub issues. If project or global GitHub tracking defaults are enabled, imported issue tasks are marked as tracked and the tracking hook links the source issue itself instead of opening a duplicate Fusion tracking issue.
 
-`fn task import-gitlab` creates Fusion tasks from GitLab project issues, group issues, or project merge requests using the configured GitLab instance/API URL and access token (`read_api` or `api` scope). It uses the GitLab HTTP API only (no `glab` dependency), supports GitLab.com and self-managed instances, stores `gitlab_import` provenance, and skips duplicates by source URL/provenance.
+`fn task import-gitlab` creates Fusion tasks from GitLab project issues, group issues, or project merge requests using the configured GitLab instance/API URL and access token (`read_api` or `api` scope). It uses the GitLab HTTP API only (no `glab` dependency), supports GitLab.com and self-managed instances, stores `gitlab_import` provenance plus `gitlabTracking` task metadata for dashboard badges/details, and skips duplicates by source URL/provenance. GitLab comment posting and remote auto-close are not part of this command yet.
 
 ```bash
 fn pr create FN-001