create_session could only mint foundational sessions ({"agent_id": <agent>}). Starting an ephemeral template session (agent_id="echo") returned 422 ephemeral_requires_config — ratatoskr had no way to supply the required config block, so Echo was uncreatable. Surfaced as an opaque session_api_failed at the CLI.
Fix (implemented in-session, direct House Code Discipline)
--whoami renderer fixed to read allowed_roles/default_role (was reading dead allowed_models/default_model).
Grounding
role↔model drift resolved with worldtree-dev (althing thread 01KXT976NN91DRBZBPXNZ2BVZR): canonical is config.role (never config.model, which now hard-rejects); role cutover commit bb4d551 / ADR-0012. Pinned conversation-api-spec.md re-synced to v1.1 (b4a278c). Verified end-to-end against the live v0.16.2 target.
Coverage
REST ephemeral-template create now covered. Contract: docs/contracts/issues/2.contract.md (Amendment 2026-07-18). Tests: 7 sessions + 6 CLI (TDD). Full suite green.
Tracking record for work already landed; closed by the implementing commit.
## Gap
`create_session` could only mint *foundational* sessions (`{"agent_id": <agent>}`). Starting an **ephemeral template** session (`agent_id="echo"`) returned `422 ephemeral_requires_config` — ratatoskr had no way to supply the required `config` block, so Echo was uncreatable. Surfaced as an opaque `session_api_failed` at the CLI.
## Fix (implemented in-session, direct House Code Discipline)
- `create_session(config=…)` — verbatim, role/model-agnostic config passthrough (PRE-004/005 guards; config+bifrost mutually exclusive).
- `SessionInfo.kind` / `.config` capture on both create + list.
- CLI `--system-prompt` flag (builds `config={"system_prompt": …}`; validation: non-empty, requires `--new`+`--agent`, xor bifrost); `_amain` surfaces `kind=`.
- `--whoami` renderer fixed to read `allowed_roles`/`default_role` (was reading dead `allowed_models`/`default_model`).
## Grounding
`role`↔`model` drift resolved with worldtree-dev (althing thread 01KXT976NN91DRBZBPXNZ2BVZR): canonical is `config.role` (never `config.model`, which now hard-rejects); role cutover commit bb4d551 / ADR-0012. Pinned conversation-api-spec.md re-synced to v1.1 (b4a278c). Verified end-to-end against the live v0.16.2 target.
## Coverage
REST ephemeral-template create now covered. Contract: docs/contracts/issues/2.contract.md (Amendment 2026-07-18). Tests: 7 sessions + 6 CLI (TDD). Full suite green.
Tracking record for work already landed; closed by the implementing commit.
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Gap
create_sessioncould only mint foundational sessions ({"agent_id": <agent>}). Starting an ephemeral template session (agent_id="echo") returned422 ephemeral_requires_config— ratatoskr had no way to supply the requiredconfigblock, so Echo was uncreatable. Surfaced as an opaquesession_api_failedat the CLI.Fix (implemented in-session, direct House Code Discipline)
create_session(config=…)— verbatim, role/model-agnostic config passthrough (PRE-004/005 guards; config+bifrost mutually exclusive).SessionInfo.kind/.configcapture on both create + list.--system-promptflag (buildsconfig={"system_prompt": …}; validation: non-empty, requires--new+--agent, xor bifrost);_amainsurfaceskind=.--whoamirenderer fixed to readallowed_roles/default_role(was reading deadallowed_models/default_model).Grounding
role↔modeldrift resolved with worldtree-dev (althing thread 01KXT976NN91DRBZBPXNZ2BVZR): canonical isconfig.role(neverconfig.model, which now hard-rejects); role cutover commit bb4d551 / ADR-0012. Pinned conversation-api-spec.md re-synced to v1.1 (b4a278c). Verified end-to-end against the live v0.16.2 target.Coverage
REST ephemeral-template create now covered. Contract: docs/contracts/issues/2.contract.md (Amendment 2026-07-18). Tests: 7 sessions + 6 CLI (TDD). Full suite green.
Tracking record for work already landed; closed by the implementing commit.