docs/config/packages: add v0.1 release prep, security status, and SDK enhancements

- Add Stage 23 roadmap for v0.1 release preparation with PyPI/npm publishing, deployment automation, and security audit milestones
- Document competitive differentiators: zkML/FHE integration, hybrid TEE/ZK verification, on-chain model marketplace, and geo-low-latency matching
- Update security documentation with smart contract audit results (0 vulnerabilities, 35 OpenZeppelin warnings)
- Add security-first setup

apps/coordinator-api/src/app/config.py

@@ -27,7 +27,7 @@ class DatabaseConfig(BaseSettings):
 
         # Default SQLite path
         if self.adapter == "sqlite":
-            return "sqlite:///./coordinator.db"
+            return "sqlite:///../data/coordinator.db"
 
         # Default PostgreSQL connection string
         return f"{self.adapter}://localhost:5432/coordinator"