feat: add pitch-deck service to core infrastructure

Migrated pitch-deck from breakpilot-pwa to breakpilot-core.
Container: bp-core-pitch-deck on port 3012.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

pitch-deck/lib/db.ts

@@ -0,0 +1,10 @@
+import { Pool } from 'pg'
+
+const pool = new Pool({
+  connectionString: process.env.DATABASE_URL || 'postgres://breakpilot:breakpilot123@localhost:5432/breakpilot_db',
+  max: 5,
+  idleTimeoutMillis: 30000,
+  connectionTimeoutMillis: 5000,
+})
+
+export default pool