Purpose of this page: name every adapter, the vendor each one wraps, and the rule that only main.ts may construct them.

Layer 8

services/ — implementations

Vendor-named adapters. Only main.ts names them; everything else sees an interface.

SQLite family

Owns the database file, its schema migrations, and the transaction context every other store accepts.

Append-only events, lease hierarchy state, execution records — all inside the caller's transaction.

Plan documents and large payloads under canonical serialization.

Speaks to the git binary through runner · journal · probe · worktree · ref-update · seed · sweep, guarded against outside writers.

Graph algorithms and YAML parsing behind their interfaces.

Revision checks and dependency readiness evaluation.

Identity and time, injected so domain stays pure and tests stay deterministic.

Encryption of credential material at rest.

Model provider catalog and configuration loading.

Exclusive access to a home directory.

From	Meaning
interfaces	implemented by
main.ts	constructs + injects each one once

An implementation imports only its own capability's interface and implementations. Another capability's implementation is out of bounds.
Vendors live here and nowhere above Layer 7.