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/IssueChatThread.test.tsx

@@ -836,6 +836,9 @@ describe("IssueChatThread", () => {
       authorAgentId: "agent-perf-codex",
       authorUserId: null,
       body: "Older loaded comment",
+      authorType: "agent" as const,
+      presentation: null,
+      metadata: null,
       createdAt: new Date("2026-04-06T12:00:00.000Z"),
       updatedAt: new Date("2026-04-06T12:00:00.000Z"),
     };
@@ -1056,6 +1059,9 @@ describe("IssueChatThread", () => {
       authorAgentId: "agent-1",
       authorUserId: null,
       body: "Agent summary with **markdown**",
+      authorType: "agent" as const,
+      presentation: null,
+      metadata: null,
       createdAt: new Date("2026-04-06T12:00:00.000Z"),
       updatedAt: new Date("2026-04-06T12:00:00.000Z"),
     }];
@@ -1135,6 +1141,9 @@ describe("IssueChatThread", () => {
               authorAgentId: null,
               authorUserId: "local-board",
               body: "Please continue validation.",
+              authorType: "user",
+              presentation: null,
+              metadata: null,
               followUpRequested: true,
               createdAt: new Date("2026-03-11T10:00:00.000Z"),
               updatedAt: new Date("2026-03-11T10:00:00.000Z"),
@@ -1588,6 +1597,9 @@ describe("IssueChatThread", () => {
               authorAgentId: "agent-1",
               authorUserId: null,
               body: "Agent summary",
+              authorType: "agent",
+              presentation: null,
+              metadata: null,
               createdAt: new Date("2026-04-06T12:00:00.000Z"),
               updatedAt: new Date("2026-04-06T12:00:00.000Z"),
             }]}
@@ -1624,6 +1636,9 @@ describe("IssueChatThread", () => {
               authorAgentId: null,
               authorUserId: "user-1",
               body: "Need a quick update",
+              authorType: "user",
+              presentation: null,
+              metadata: null,
               queueState: "queued",
               queueReason: "hold",
               createdAt: new Date("2026-04-06T12:00:00.000Z"),
@@ -1653,6 +1668,9 @@ describe("IssueChatThread", () => {
               authorAgentId: null,
               authorUserId: "user-1",
               body: "Queue behind active run",
+              authorType: "user",
+              presentation: null,
+              metadata: null,
               queueState: "queued",
               queueReason: "active_run",
               createdAt: new Date("2026-04-06T12:01:00.000Z"),
@@ -1997,6 +2015,9 @@ describe("IssueChatThread", () => {
               authorAgentId: null,
               authorUserId: "user-1",
               body: "hello",
+              authorType: "user",
+              presentation: null,
+              metadata: null,
               createdAt: new Date("2026-04-22T12:00:00.000Z"),
               updatedAt: new Date("2026-04-22T12:00:00.000Z"),
             }]}