[codex] Improve runtime and import reliability (#6549)

## Thinking Path

> - Paperclip coordinates autonomous company work through local and
hosted runtime surfaces.
> - Local embedded Postgres and tenant import/export paths are
foundational reliability pieces.
> - A runtime failure in either path can stop agents or imports before
useful work begins.
> - The branch included remaining fixes for embedded native library
bootstrap and async tenant import handling.
> - This pull request groups those runtime/import reliability changes
into one standalone PR.
> - The benefit is a more robust local runtime and safer cloud tenant
import behavior.

## What Changed

- Prepared embedded Postgres native runtime before startup in
CLI/server/test entrypoints.
- Added embedded Postgres native bootstrap coverage.
- Added async tenant import job handling and deferred validation
coverage.
- Kept the runtime/import changes based directly on current
`origin/master` after related upstream PRs had already merged.

## Verification

- `pnpm --filter @paperclipai/plugin-sdk build`
- `NODE_ENV=test pnpm exec vitest run
packages/db/src/embedded-postgres-native.test.ts
server/src/__tests__/company-portability-routes.test.ts`

## Risks

- Medium-low: this touches startup/import paths, but the branch is small
and covered by targeted tests.
- The embedded Postgres change depends on platform-specific
native-library behavior, so CI and follow-up checks should still verify
supported runners.

> 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 GPT-5 Codex via `codex_local`, tool-enabled coding session;
exact context window not exposed by this 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

cli/src/commands/routines.ts

@@ -9,6 +9,7 @@ import {
   createEmbeddedPostgresLogBuffer,
   ensurePostgresDatabase,
   formatEmbeddedPostgresError,
+  prepareEmbeddedPostgresNativeRuntime,
   routines,
 } from "@paperclipai/db";
 import { eq, inArray } from "drizzle-orm";
@@ -116,6 +117,7 @@ async function ensureEmbeddedPostgres(dataDir: string, preferredPort: number): P
       "Embedded PostgreSQL support requires dependency `embedded-postgres`. Reinstall dependencies and try again.",
     );
   }
+  await prepareEmbeddedPostgresNativeRuntime();
 
   const postmasterPidFile = path.resolve(dataDir, "postmaster.pid");
   const runningPid = readRunningPostmasterPid(postmasterPidFile);

cli/src/commands/worktree.ts

@@ -45,6 +45,7 @@ import {
   runDatabaseRestore,
   createEmbeddedPostgresLogBuffer,
   formatEmbeddedPostgresError,
+  prepareEmbeddedPostgresNativeRuntime,
 } from "@paperclipai/db";
 import type { Command } from "commander";
 import { ensureAgentJwtSecret, loadPaperclipEnvFile, mergePaperclipEnvEntries, readPaperclipEnvEntries, resolvePaperclipEnvFile } from "../config/env.js";
@@ -1059,6 +1060,7 @@ async function ensureEmbeddedPostgres(dataDir: string, preferredPort: number): P
       "Embedded PostgreSQL support requires dependency `embedded-postgres`. Reinstall dependencies and try again.",
     );
   }
+  await prepareEmbeddedPostgresNativeRuntime();
 
   const postmasterPidFile = path.resolve(dataDir, "postmaster.pid");
   const runningPid = readRunningPostmasterPid(postmasterPidFile);