feat(01-foundation-01): monorepo scaffolding, Docker Compose, and shared data models

- pyproject.toml: uv workspace with 5 member packages (shared, gateway, router, orchestrator, llm-pool)
- docker-compose.yml: PostgreSQL 16 + Redis 7 + Ollama services on konstruct-net
- .env.example: all required env vars documented, konstruct_app role (not superuser)
- scripts/init-db.sh: creates konstruct_app role at DB init time
- packages/shared/shared/config.py: Pydantic Settings loading all env vars
- packages/shared/shared/models/message.py: KonstructMessage, ChannelType, SenderInfo, MessageContent
- packages/shared/shared/models/tenant.py: Tenant, Agent, ChannelConnection SQLAlchemy 2.0 models
- packages/shared/shared/models/auth.py: PortalUser model for admin portal auth
- packages/shared/shared/db.py: async SQLAlchemy engine, session factory, get_session dependency
- packages/shared/shared/rls.py: current_tenant_id ContextVar and configure_rls_hook with parameterized SET LOCAL
- packages/shared/shared/redis_keys.py: tenant-namespaced key constructors (rate_limit, idempotency, session, engaged_thread)

packages/orchestrator/pyproject.toml

@@ -0,0 +1,20 @@
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[project]
+name = "konstruct-orchestrator"
+version = "0.1.0"
+description = "Agent Orchestrator — agent selection, tool dispatch, memory, handoffs"
+requires-python = ">=3.12"
+dependencies = [
+    "konstruct-shared",
+    "fastapi[standard]>=0.115.0",
+    "httpx>=0.28.0",
+]
+
+[tool.uv.sources]
+konstruct-shared = { workspace = true }
+
+[tool.hatch.build.targets.wheel]
+packages = ["orchestrator"]