[codex] Improve workspace navigation and runtime UI (#4089)

## Thinking Path

> - Paperclip agents do real work in project and execution workspaces.
> - Operators need workspace state to be visible, navigable, and
copyable without digging through raw run logs.
> - The branch included related workspace cards, navigation, runtime
controls, stale-service handling, and issue-property visibility.
> - These changes share the workspace UI and runtime-control surfaces
and can stand alone from unrelated access/profile work.
> - This pull request groups the workspace experience changes into one
standalone branch.
> - The benefit is a clearer workspace overview, better metadata copy
flows, and more accurate runtime service controls.

## What Changed

- Polished project workspace summary cards and made workspace metadata
copyable.
- Added a workspace navigation overview and extracted reusable project
workspace content.
- Squared and polished the execution workspace configuration page.
- Fixed stale workspace command matching and hid stopped stale services
in runtime controls.
- Showed live workspace service context in issue properties.

## Verification

- `pnpm install --frozen-lockfile`
- `pnpm exec vitest run
ui/src/components/ProjectWorkspaceSummaryCard.test.tsx
ui/src/lib/project-workspaces-tab.test.ts
ui/src/components/Sidebar.test.tsx
ui/src/components/WorkspaceRuntimeControls.test.tsx
ui/src/components/IssueProperties.test.tsx`
- `pnpm exec vitest run packages/shared/src/workspace-commands.test.ts
--config /dev/null` because the root Vitest project config does not
currently include `packages/shared` tests.
- Split integration check: merged after runtime/governance,
dev-infra/backups, and access/profiles with no merge conflicts.
- Confirmed this branch does not include `pnpm-lock.yaml`.

## Risks

- Medium risk: touches workspace navigation, runtime controls, and issue
property rendering.
- Visual layout changes may need browser QA, especially around smaller
screens and dense workspace metadata.
- No database migrations are included.

> For core feature work, check [`ROADMAP.md`](ROADMAP.md) first and
discuss it in `#dev` before opening the PR. Feature PRs that overlap
with planned core work may need to be redirected — check the roadmap
first. See `CONTRIBUTING.md`.

## Model Used

- OpenAI Codex, GPT-5.4 tool-enabled coding model, agentic
code-editing/runtime with local shell and GitHub CLI access; exact
context window and reasoning mode are not exposed by the Paperclip
harness.

## Checklist

- [x] I have included a thinking path that traces from project context
to this change
- [x] I have specified the model used (with version and capability
details)
- [x] I have checked ROADMAP.md and confirmed this PR does not duplicate
planned core work
- [x] I have run tests locally and they pass
- [x] I have added or updated tests where applicable
- [x] If this change affects the UI, I have included before/after
screenshots
- [x] I have updated relevant documentation to reflect my changes
- [x] I have considered and documented any risks above
- [x] I will address all Greptile and reviewer comments before
requesting merge

---------

Co-authored-by: Paperclip <noreply@paperclip.ing>

ui/src/App.tsx

@@ -10,6 +10,7 @@ import { AgentDetail } from "./pages/AgentDetail";
 import { Projects } from "./pages/Projects";
 import { ProjectDetail } from "./pages/ProjectDetail";
 import { ProjectWorkspaceDetail } from "./pages/ProjectWorkspaceDetail";
+import { Workspaces } from "./pages/Workspaces";
 import { Issues } from "./pages/Issues";
 import { IssueDetail } from "./pages/IssueDetail";
 import { Routines } from "./pages/Routines";
@@ -90,6 +91,7 @@ function boardRoutes() {
       <Route path="projects/:projectId/workspaces" element={<ProjectDetail />} />
       <Route path="projects/:projectId/configuration" element={<ProjectDetail />} />
       <Route path="projects/:projectId/budget" element={<ProjectDetail />} />
+      <Route path="workspaces" element={<Workspaces />} />
       <Route path="issues" element={<Issues />} />
       <Route path="issues/all" element={<Navigate to="/issues" replace />} />
       <Route path="issues/active" element={<Navigate to="/issues" replace />} />
@@ -296,6 +298,7 @@ export function App() {
           <Route path="projects/:projectId/workspaces" element={<UnprefixedBoardRedirect />} />
           <Route path="projects/:projectId/workspaces/:workspaceId" element={<UnprefixedBoardRedirect />} />
           <Route path="projects/:projectId/configuration" element={<UnprefixedBoardRedirect />} />
+          <Route path="workspaces" element={<UnprefixedBoardRedirect />} />
           <Route path="execution-workspaces/:workspaceId" element={<UnprefixedBoardRedirect />} />
           <Route path="execution-workspaces/:workspaceId/configuration" element={<UnprefixedBoardRedirect />} />
           <Route path="execution-workspaces/:workspaceId/runtime-logs" element={<UnprefixedBoardRedirect />} />