Memory Data Model

The unit of memory is the Memory dataclass (src/aml/backends/interface.py). Capability-gated fields are honored only when the corresponding capability is declared.

Field	Type	Gated on
`content`	`str`	always
`valid_from`	`datetime \| None`	`BI_TEMPORAL`
`valid_until`	`datetime \| None`	`BI_TEMPORAL`
`tenant_id`	`str \| None`	`MULTI_TENANT`
`superseded_by`	ref `\| None`	`SUPERSESSION_CHAIN`
`source`	`SourceMeta \| None`	`PROVENANCE` / `CRYPTOGRAPHIC_PROVENANCE`

SourceMeta: write_id, written_at, written_by (populated under PROVENANCE); signature, public_key (populated under CRYPTOGRAPHIC_PROVENANCE).

WriteOptions: valid_from, tenant_id, signing_key. RetrieveOptions: as_of (honored if BI_TEMPORAL; default = now), tenant_id (honored if MULTI_TENANT), budget (in tokens).

Source: src/aml/backends/interface.py