Huginn

Huginn is the GameCult memory organ. It owns each agent instance's mind as typed state: what an instance remembers, which of that memory is admitted to steer its next action, and the provenance of every admitted claim.

Upstream: https://github.com/GameCult/Huginn.git

Authority

• An instance owns its mind; Huginn owns the state. Huginn is the single writer of an instance's memory documents. No other service, script, or agent writes them.
• Memory documents are CultCache state. huginn-mind persists them through CultLib's Rust CultCache into a redb store at <state_root>/minds/<instance>/mind.redb. huginn-daemon serves one such mind over CultNet RUDP: admission and the read side ride cultnet.operation_request.v0 and cultnet.operation_response.v0, and the two wire schemas answer a schema catalog request.
• Retrieval depends on Qdrant directly, with no second store and no second writer. huginn-daemon keeps one collection per mind, huginn_mind_<instance>, as a projection of the mind: one worker thread embeds each indexable document through Ollama and writes its point, off the serving path, and a restart compares the mind with the collection and writes what is missing. An unreachable Qdrant or Ollama shows in whoami as the index's status and is retried; admission never waits on it. The daemon requires --qdrant-url, --ollama-url and --embedding-model. A query carrying semantic is answered through the same selection as any other: the index supplies candidate ids and scores, and the mind keeps only the documents it holds and the selection admits (ask for in_force to exclude resolved ones), ordered by score. It takes no cursor, and it is refused Unavailable while the index is failing or refused.
• Mind state is not version-controlled. It lives in Huginn's store, not in any repository.

Generic .cc inspection is not Huginn's job. CultCache Studio inspects and edits .cc state. Huginn reads and writes minds.

Layout

A Cargo workspace of three crates:

• crates/huginn-mind: storage, identity, admission, and queries and derived status over memory documents.
• crates/huginn-daemon: the CultNet surface. The socket, the sessions and the process, and no rule. The operation envelope both sides speak is huginn-mind's.
• crates/eureka-state: the client core, HuginnClient::call: one request to a daemon over CultNet RUDP, a deferred answer resolved, and no state.

huginn-mind is live: it opens one instance's store (an owned redb CultCache at <state_root>/minds/<instance>/mind.redb, locked for the mind's lifetime), and refuses a store whose instance document names another instance, whose epoch record is foreign, or whose types are not a mind's. It admits batches of pipeline documents through one commit path: the leaf's bounds, formats and keys, then the organ's cross-document rules (references, in-force status, the resolution matrix, derived resolutions and stewardships), then one compare-and-swap that lands the batch whole with a receipt naming the exact bytes it read and wrote. An exact replay answers with the stored receipt. It reads them back the same way: a document with the facts of its admission joined from that receipt and its status derived at read time, and typed queries over one mind. Status is never stored, and the views derive it through the same rules admission does. Document shape and keys come from epiphany-pipeline; the store is CultLib's Rust CultCache.

huginn-daemon opens one mind, binds one UDP socket in that order, and answers every frame on the session it arrived on: one operation per Mind method plus whoami, whose payload is the mind's own types as named MessagePack. A refusal is an answer with a rejected status, never a transport error; an envelope that does not decode is answered with a typed failure and reaches no mind. The two schemas it publishes live in schemas/cultnet/ and are pinned to their derivation by a test. There is no index yet.

eureka-state has no MCP surface yet; the campaign's cut map in Epiphany/notes/eureka-pipeline-state-cut.md owns what each crate must do next.

cargo check --workspace
cargo run -p huginn-daemon -- --state-root <abs> --instance <slug> --bind 127.0.0.1:17872

Persona

Huginn's legacy repo Persona lives under .voidbot/. Its state/huginn.cc holds legacy void.* documents and its voice/identity.json names the Persona. The two disagree about jurisdiction; that migration belongs to the portable-Persona work, not to this workspace, and nothing here reads or writes .voidbot/.