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>

packages/db/src/migrations/0078_white_darwin.sql

@@ -0,0 +1,3 @@
+ALTER TABLE "issue_comments" ADD COLUMN "author_type" text;--> statement-breakpoint
+ALTER TABLE "issue_comments" ADD COLUMN "presentation" jsonb;--> statement-breakpoint
+ALTER TABLE "issue_comments" ADD COLUMN "metadata" jsonb;

packages/db/src/migrations/meta/_journal.json

@@ -547,6 +547,13 @@
       "when": 1777933347806,
       "tag": "0077_unusual_karnak",
       "breakpoints": true
+    },
+    {
+      "idx": 78,
+      "version": "7",
+      "when": 1778004024976,
+      "tag": "0078_white_darwin",
+      "breakpoints": true
     }
   ]
 }

packages/db/src/schema/issue_comments.ts

@@ -1,4 +1,5 @@
-import { pgTable, uuid, text, timestamp, index } from "drizzle-orm/pg-core";
+import type { IssueCommentAuthorType, IssueCommentMetadata, IssueCommentPresentation } from "@paperclipai/shared";
+import { pgTable, uuid, text, timestamp, index, jsonb } from "drizzle-orm/pg-core";
 import { companies } from "./companies.js";
 import { issues } from "./issues.js";
 import { agents } from "./agents.js";
@@ -12,8 +13,11 @@ export const issueComments = pgTable(
     issueId: uuid("issue_id").notNull().references(() => issues.id),
     authorAgentId: uuid("author_agent_id").references(() => agents.id),
     authorUserId: text("author_user_id"),
+    authorType: text("author_type").$type<IssueCommentAuthorType>(),
     createdByRunId: uuid("created_by_run_id").references(() => heartbeatRuns.id, { onDelete: "set null" }),
     body: text("body").notNull(),
+    presentation: jsonb("presentation").$type<IssueCommentPresentation | null>(),
+    metadata: jsonb("metadata").$type<IssueCommentMetadata | null>(),
     createdAt: timestamp("created_at", { withTimezone: true }).notNull().defaultNow(),
     updatedAt: timestamp("updated_at", { withTimezone: true }).notNull().defaultNow(),
   },