Phase D: Move the Cortex store, pricing, session API and attribution into the binary #1727

Part of #1714 · phase D · Section 8 · design in #1717 (docs/superpowers/specs/2026-11-07-praxis-mode-design.md)

Goal

Make Cortex one Rust binary on the Praxis crates, in the shape of praxis-ai today. agentop does not change.

Scope

• Port about 13.7k lines of Go into the binary:

  • the session store, archive and timeline, as a Cortex store crate on SQLite in the pattern of praxis-ai's store crates.
  • pricing and the ledger, as a Rust pricing filter, then Tokenomics when it is on par.
  • the session API, as filters on :47601 (/v1/events through StreamingTerminalResponse).
  • attribution.

• Attribution moves together with the store, because the store's events feed its state. The Go front door passes the client's socket address in X-Cortex-Client, and the binary does the process lookup itself.

• cortex_record writes the same record type to the store in process. /v1/ingest and the emitter's HTTP stream go away.

• Decide: an importer for existing archives, or only the retention window. Decide each remaining plugin: port or retire. Split this issue into sub-issues before work starts.

• Decide the path for the rows that the Go front door still writes (refusals, gateway_unavailable, tunnels, WebSockets) into the binary's store. Proposal: the front door posts them to the ingestion endpoint, now in the binary. Test it before phase C.

• Decide how a ported filter that reads parsed facts in both directions (opa, session budget) fits the chain.

Done when

• The same agentop session gives the same /v1/sessions, /v1/events, /v1/usage and timeline answers against the Go and the Rust store.
• The Go tests of the ported packages pass as parity cases.

Depends on

Trigger: praxis#782 and praxis#1447 in a release, the same trigger as phase C. This phase runs first, then C. (Changed 2026-11-10: users are not asked to use --praxis, so no work starts here before Praxis upstream is ready. See #1714.)

Assisted-By: Claude (Anthropic AI) noreply@anthropic.com