Env-driven dev ports + splash as the front door

vite.config.ts now reads WEB_PORT (Vite) and PORT (API) from .env via
loadEnv, with the /api proxy following PORT and strictPort on — so two
branch checkouts can each run `npm run dev` on their own ports.

Play now always lands on the splash at the bare root instead of silently
resuming an active playthrough; a Resume action continues one when present.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

.env.example

@@ -1,9 +1,18 @@
 DATABASE_URL=postgres://osint:osint_secret@localhost:5433/osint_dev
+
+# Dev ports — give each branch checkout distinct values to run them side by side.
+# PORT is the Express API; WEB_PORT is the Vite dev server, which proxies /api to PORT.
 PORT=8787
+WEB_PORT=5173
 CORS_ORIGIN=http://localhost:5173
 LEVEL_EDITING_ENABLED=true
 JWT_SECRET=osint-local-dev-secret
 MAX_DOCUMENT_BYTES=26214400
+OCR_ENABLED=true
+OCR_LANGUAGES=nor+eng
+OCR_TIMEOUT_MS=20000
+MAX_OCR_BYTES=15728640
+MAX_EXTRACTED_TEXT_CHARACTERS=200000
 
 # Game asset storage (MinIO). Start it with: docker compose -f docker-compose.dev.yml up -d minio createbuckets
 S3_ENDPOINT=http://localhost:9000