chore: cleanup project structure and resolve client type errors

- resolve all 69 client type-checking errors for stricter TS compliance
- remove obsolete type-check baseline scripts and files
- overhaul project root with updated README.md and new DEVELOPMENT.md
- migrate to unified baseline migration strategy and cleanup docker configs
- remove redundant production and dev-specific shell scripts

docker-compose.dev.yml

@@ -0,0 +1,24 @@
+name: projectx-dev
+
+services:
+  postgres:
+    image: pgvector/pgvector:pg16
+    restart: unless-stopped
+    environment:
+      POSTGRES_USER: ${POSTGRES_USER:-projectx}
+      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:-projectx}
+      POSTGRES_DB: ${POSTGRES_DB:-projectx}
+      POSTGRES_HOST_AUTH_METHOD: trust
+    ports:
+      - "5432:5432"
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+      - ./docker/postgres/init.sql:/docker-entrypoint-initdb.d/init.sql
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U projectx"]
+      interval: 5s
+      timeout: 5s
+      retries: 5
+
+volumes:
+  postgres_data: