feat: scaffold outreach engine monorepo on the novelpad-desktop stack

Workspaces: config (copied), outreach-core (schema + actions/queries +
hard gates), outreach-ai (Gemini client + embeddings copies, profiler and
mission-fit-judge agent stubs), outreach-worker (DBOS executor with
nightly ingest + hourly expiry workflows), outreach-review (RR7 review
queue v0). Initial drizzle migration incl. pgvector extension.

Stack contract: Yarn 4.5.0 + Turbo, Node 22.16, Drizzle 0.44.6 +
pgvector, DBOS 4.17.6, @google/genai on Vertex, gemini-embedding-001
@1536, React Router v7. Files copied from novelpad-desktop carry
provenance headers @ 62c56b87.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

apps/outreach-review/app/db.server.ts

@@ -0,0 +1,33 @@
+// Copied/adapted from novelpad-desktop apps/website/app/db/db.server.ts @ 62c56b87
+import { schema, type NpOutreachDatabase } from '@novelpad/outreach-core';
+import { drizzle } from 'drizzle-orm/node-postgres';
+import pkg from 'pg';
+
+const { Pool } = pkg;
+
+// HMR-safe singleton. Without this, Vite re-evaluates this module on hot
+// reload and instantiates a fresh Pool, while the previous pool lingers with
+// open connections until idleTimeoutMillis fires — see the equivalent note
+// in novelpad-desktop's apps/website/app/db/db.server.ts.
+const g = globalThis as unknown as {
+  __outreachPool?: InstanceType<typeof Pool>;
+  __outreachDb?: NpOutreachDatabase;
+};
+
+const pool =
+  g.__outreachPool ??
+  (g.__outreachPool = new Pool({
+    connectionString: process.env.DATABASE_URL,
+    application_name: 'outreach-review',
+    max: Number(process.env.PG_POOL_MAX ?? 10),
+    idleTimeoutMillis: 30000,
+    connectionTimeoutMillis: Number(
+      process.env.PG_CONNECTION_TIMEOUT_MS ?? 15000,
+    ),
+  }));
+
+const db =
+  g.__outreachDb ??
+  (g.__outreachDb = drizzle(pool, { schema }) as unknown as NpOutreachDatabase);
+
+export { db, pool };