- Add dashboard routes for /agents/org-tree and /agents/resolve/:shortname with scoped store wiring and 404 handling
- Add /agents/:id/chain-of-command endpoint to return reporting hierarchy from self to top manager
- Extend dashboard app API with OrgTreeNode export plus fetchOrgTree, fetchChainOfCommand, and resolveAgent helpers
- Add route tests covering org-tree, resolve, and chain-of-command success and not-found scenarios