note: Repository/objective pages and sidebar navigation both modify the Workspace SPA navigation/layout surface, especially `web/workspace/src/routes/+page.svelte` and route/component structure. Start this Ticket after `00001KVNG9B9Z` lands or after its implementation diff is known enough to route a non-conflicting continuation.

author: yoi-orchestrator


summary: Add read-only current-workspace Repository APIs/pages with bounded Git summary/log and Ticket Kanban, plus Objective list page and sidebar links, preserving filesystem Ticket/Objective authority and static SPA boundaries.

role_plan: Orchestrator creates a dedicated child worktree from current sidebar-integrated `orchestration` and spawns a narrow-scope Coder. Reviewer will be spawned read-only after Coder reports implementation commit(s). After approval, Orchestrator integrates into `orchestration`, validates workspace-server/frontend/Nix, records closure, and cleans only the child worktree/branch.