- implement createAthenaAgent with primary-mode model behavior and prompt metadata
- export Athena factory and metadata through athena and root agent barrels
- Add synthesis result contracts with agreement, provenance, and Athena assessment fields\n- Add synthesis prompt builder and council-response formatter with failure-aware provenance output
- Implement executeCouncil with parallel member launch and partial-failure tolerance
- Add result collection mapping and wire Athena exports with read-only athena tool restrictions
- Add council execution result and member response types for orchestration
- Implement provider/model parser for BackgroundManager-compatible model input
- Add shared council prompt builder and export new athena modules
- add AthenaOverrideConfigSchema so athena supports council plus standard override fields
- export athena schema/contracts and add root config tests for valid and invalid athena overrides
- switch schema generation to zod v4 toJSONSchema and regenerate JSON schema with athena council structure
