# A1: Navigable Administration Pages

**What to build:** Workspace and Pi become pages; all five surfaces support deep links, browser history, permission enforcement and guarded navigation while retaining session state.

**Blocked by:** None (can start immediately).

**Status:** implemented and locally verified on 2026-09-12; local ticket, Gitea publication pending.

- [x] Five full-page surfaces reached from the current right navigation.
- [x] Refresh, Back/Forward and unrelated host URL/history fields preserved.
- [x] Unsaved edits block navigation; operations lock context without blocking page inspection. Unauthorized links denied.
- [x] Existing session continuation and management regressions pass.
- [x] One global shelf A; independent remembered workspace/model, validated defaults, session-pinned workspace on Resume.