phase 0+1: project scaffold, k8s manifests, CI pipeline, steering, hooks, tests

- Repository structure for all services, infra, lakehouse, dashboards
- K8s manifests targeting stonks-oracle namespace with GHCR images
- Ingress via Traefik with ca-issuer TLS for internal services
- ConfigMap wired to existing cluster services (pg, redis, minio, ollama)
- GitHub Actions workflow for lint, test, multi-service container builds
- Dockerfile with build-arg CMD per service
- Makefile for local build/push/deploy
- Steering rules for TDD workflow, K8s conventions, project context
- Agent hooks for lint-on-save, test-on-save, k8s-validate, phase-commit
- Ruff linter config, all lint issues fixed
- 14 passing tests for schemas, config, redis keys
- PostgreSQL migrations, Trino catalogs, Superset config, MinIO lifecycle

services/shared/db.py

@@ -0,0 +1,33 @@
+"""Database connection helpers."""
+import asyncpg
+import redis.asyncio as aioredis
+from minio import Minio
+
+from .config import AppConfig
+
+
+async def get_pg_pool(config: AppConfig) -> asyncpg.Pool:
+    """Create a PostgreSQL connection pool."""
+    return await asyncpg.create_pool(
+        dsn=config.postgres.dsn,
+        min_size=2,
+        max_size=10,
+    )
+
+
+def get_redis(config: AppConfig) -> aioredis.Redis:
+    """Create a Redis async client."""
+    return aioredis.from_url(
+        config.redis.url,
+        decode_responses=True,
+    )
+
+
+def get_minio(config: AppConfig) -> Minio:
+    """Create a MinIO client."""
+    return Minio(
+        config.minio.endpoint,
+        access_key=config.minio.access_key,
+        secret_key=config.minio.secret_key,
+        secure=config.minio.secure,
+    )