Three self-contained reference SessionStore implementations under
examples/session-stores/, each importing types from the published
@anthropic-ai/claude-agent-sdk package.

- s3/        @aws-sdk/client-s3 — JSONL part files per append
- redis/     ioredis            — RPUSH/LRANGE lists + zset session index
- postgres/  pg                 — one row per entry, BIGSERIAL ordering

Each adapter directory is independently installable and includes:
- src/       the adapter (copy into your project)
- test/      in-process mock unit tests + env-gated live conformance
             (SESSION_STORE_S3_* / _REDIS_URL / _POSTGRES_URL)
- demo.ts    runnable query() + resume round-trip against the SDK

shared/conformance.ts vendors the 13-contract behavioral suite so users
can validate their own adapters.

Not packaged or published; examples/.gitignore excludes node_modules and
lockfiles. No CI workflow added — the existing workflows are issue-only
or path-filtered to .github/**, so this change is inert for CI.