# session.yaml Schema (tgassist)

## Fields

- `schema.name`:
  - Value: `tgassist.session`

- `schema.version`:
  - Value: `0.1`

- `status.current_phase`:
  - Enum: `demand | acceptance | plan | architecture | decompose | develop | code_review | test | acceptance_review | archive`

- `status.current_round`:
  - Integer (>= 1)

- `status.state`:
  - Enum: `in_progress | awaiting_answers | finalized`

- `status.last_updated`:
  - ISO date (YYYY-MM-DD)

- `phases`:
  - List of phase objects
  - Each phase has:
    - `name` (same enum as `current_phase`)
    - `status`: `pending | in_progress | completed | optional`

- `questions`:
  - `p0_open`: integer
  - `p1_open`: integer
  - `p2_open`: integer

- `metrics`:
  - `evidence_count`: integer
  - `mermaid_count`: integer
  - `table_count`: integer

- `assumptions`:
  - List of strings

## Notes
- Phase progression requires DoR/DoD checks and gate approvals.
- `state` becomes `awaiting_answers` when P0 questions remain.