Add issue controls and retry-now recovery (#5426)

## Thinking Path

> - Paperclip orchestrates AI agents for zero-human companies
> - Issue operators need clear controls for execution settings, model
overrides, and recovery retries
> - Existing issue properties hid useful adapter override state and did
not expose a board-triggered retry for scheduled heartbeat recovery
> - Scheduled retries also need to respect the same safety gates as
normal execution instead of bypassing budget, review, pause, dependency,
or terminal-state checks
> - This pull request adds the issue property controls and retry-now
surfaces together because they share the issue details/properties UI
> - The benefit is that operators can inspect and adjust issue execution
settings and safely trigger pending scheduled recovery without hidden
control-plane behavior

## What Changed

- Adds editable issue assignee model override controls in
`IssueProperties`, with focused coverage.
- Removes the stale workspace tasks link from issue properties.
- Adds a scheduled retry `retry-now` backend path and shared response
types.
- Adds main-pane and properties-pane scheduled retry UI, backed by a
shared `useRetryNowMutation` hook.
- Adds suppression coverage for budget hard stops, review participant
changes, subtree pause holds, unresolved blockers, terminal issues, and
company scoping.
- Updates the `IssueProperties` test harness with toast actions required
by the retry-now hook.

## Verification

- `pnpm exec vitest run ui/src/components/IssueProperties.test.tsx
ui/src/components/IssueScheduledRetryCard.test.tsx` — 31 passed.
- `pnpm exec vitest run
server/src/__tests__/issue-scheduled-retry-routes.test.ts` — exited 0,
but this host skipped the embedded Postgres route tests with: `Postgres
init script exited with code null. Please check the logs for extra info.
The data directory might already exist.`
- Pairwise merge check against the assigned-backlog PR branch completed
without conflicts via `git merge --no-commit --no-ff` in a temporary
worktree.

### Visual verification screenshots

Storybook story: `Product/Issue Scheduled retry surfaces /
ScheduledRetrySurfaces`.

![Scheduled retry card and issue properties rows -
desktop](https://raw.githubusercontent.com/paperclipai/paperclip/62fb566f357312b43b9162af02252d0175530a8f/docs/assets/pr-5426/scheduled-retry-story-desktop.png)

![Scheduled retry card and issue properties rows -
mobile](https://raw.githubusercontent.com/paperclipai/paperclip/62fb566f357312b43b9162af02252d0175530a8f/docs/assets/pr-5426/scheduled-retry-story-mobile.png)

## Risks

- Medium: this touches issue execution/retry behavior, so CI should run
the embedded Postgres route tests on a host that can initialize
Postgres.
- Low-to-medium UI risk around duplicated retry-now entry points; both
surfaces share one mutation hook to keep behavior consistent.

> 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 coding agent, GPT-5 model family (`gpt-5`), tool-enabled
Paperclip heartbeat environment. Context window and internal reasoning
mode are not exposed by the runtime.

## 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/api/issues.ts

@@ -12,6 +12,7 @@ import type {
   IssueComment,
   IssueDocument,
   IssueLabel,
+  IssueRetryNowResponse,
   IssueThreadInteraction,
   IssueTreeControlPreview,
   IssueTreeHold,
@@ -129,6 +130,8 @@ export const issuesApi = {
   releaseTreeHold: (id: string, holdId: string, data: ReleaseIssueTreeHold) =>
     api.post<IssueTreeHold>(`/issues/${id}/tree-holds/${holdId}/release`, data),
   checkMonitorNow: (id: string) => api.post<{ ok: true }>(`/issues/${id}/monitor/check-now`, {}),
+  retryScheduledRetryNow: (id: string) =>
+    api.post<IssueRetryNowResponse>(`/issues/${id}/scheduled-retry/retry-now`, {}),
   remove: (id: string) => api.delete<Issue>(`/issues/${id}`),
   checkout: (id: string, agentId: string) =>
     api.post<Issue>(`/issues/${id}/checkout`, {