Add recovery handoff system notices (#5289)

## Thinking Path

> - Paperclip orchestrates AI agents for zero-human companies.
> - Agent runs can end productively while the source issue still lacks a
durable final disposition.
> - That leaves the control plane unsure whether to resume, escalate, or
close the work.
> - Issue comments also need a presentation contract so system-authored
recovery notices can render as first-class thread messages without
overloading normal comments.
> - This pull request adds successful-run handoff recovery, comment
presentation metadata, and system notice rendering.
> - The benefit is stricter task liveness with clearer operator-facing
recovery state.

## What Changed

- Added successful-run handoff decisions, wake payloads, escalation
behavior, and recovery tests.
- Added issue comment presentation metadata with migration
`0078_white_darwin.sql` and shared/server/company portability support.
- Rendered recovery/system notices in issue chat with dedicated UI
components, fixtures, tests, and storybook/lab coverage.
- Included the current recovery model-profile hint patch so automatic
recovery follow-ups use the cheap profile.

## Verification

- `pnpm install --frozen-lockfile`
- `pnpm exec vitest run
server/src/services/recovery/successful-run-handoff.test.ts
ui/src/components/SystemNotice.test.tsx
ui/src/lib/system-notice-comment.test.ts
ui/src/components/IssueChatThreadSystemNotice.test.tsx`

## Risks

- Migration-bearing PR: merge this before any other branch that might
later add a migration.
- The branch touches both recovery services and issue-thread rendering,
so review should pay attention to recovery wake idempotency and comment
metadata compatibility.

## Model Used

- OpenAI GPT-5 Codex via Paperclip `codex_local` adapter, with
shell/git/GitHub CLI tool use.

## 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/components/IssueBlockedNotice.test.tsx

@@ -0,0 +1,63 @@
+// @vitest-environment jsdom
+
+import { act } from "react";
+import { createRoot } from "react-dom/client";
+import type { AnchorHTMLAttributes, ReactElement } from "react";
+import { afterEach, describe, expect, it, vi } from "vitest";
+import { IssueBlockedNotice } from "./IssueBlockedNotice";
+
+vi.mock("@/lib/router", () => ({
+  Link: ({ children, to, ...props }: AnchorHTMLAttributes<HTMLAnchorElement> & { to: string }) => (
+    <a href={to} {...props}>{children}</a>
+  ),
+}));
+
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+(globalThis as any).IS_REACT_ACT_ENVIRONMENT = true;
+
+let root: ReturnType<typeof createRoot> | null = null;
+let container: HTMLDivElement | null = null;
+
+afterEach(() => {
+  if (root) {
+    act(() => root?.unmount());
+  }
+  root = null;
+  container?.remove();
+  container = null;
+});
+
+function render(element: ReactElement) {
+  container = document.createElement("div");
+  document.body.appendChild(container);
+  root = createRoot(container);
+  act(() => root?.render(element));
+  return container;
+}
+
+describe("IssueBlockedNotice", () => {
+  it("renders a successful-run next-step notice without requiring blockers", () => {
+    const node = render(
+      <IssueBlockedNotice
+        issueStatus="in_progress"
+        blockers={[]}
+        agentName="CodexCoder"
+        successfulRunHandoff={{
+          state: "required",
+          required: true,
+          sourceRunId: "12345678-aaaa-bbbb-cccc-123456789abc",
+          correctiveRunId: null,
+          assigneeAgentId: "agent-1",
+          detectedProgressSummary: "Updated the plan and left follow-up work.",
+          createdAt: "2026-05-01T00:00:00.000Z",
+        }}
+      />,
+    );
+
+    expect(node.textContent).toContain("This issue still needs a next step.");
+    expect(node.textContent).toContain("Corrective wake queued for CodexCoder");
+    expect(node.textContent).toContain("Detected progress: Updated the plan");
+    expect(node.textContent).not.toContain("Work on this issue is blocked until");
+    expect(node.querySelector('[data-successful-run-handoff="required"]')).not.toBeNull();
+  });
+});