| """Planner agent — slow-path CRISP-DM analysis planner. | |
| Single LLM call: BusinessContext + CatalogSummary + ToolRegistry + question + | |
| Constraints -> a validated, static `TaskList` (a DAG of fully-specified | |
| tool-call chains). No replanning (INV-6); tool-agnostic (INV-7). | |
| See AGENT_ARCHITECTURE_CONTEXT_new.md §7.3. | |
| """ | |