müde 8b10731aa4 split claude.md into docs/ — per-topic, human-readable

claude.md was eating 400 lines of subsystem detail that's useful
when you're working on that subsystem and noise the rest of the
time. split into:

- docs/conventions.md   naming, identity, async forms, commit style
- docs/gotchas.md       nspawn / nixos-container quirks
- docs/web-ui.md        dashboard + per-agent layouts and endpoints
- docs/turn-loop.md     claude invocation, wake prompt, mcp surface
- docs/approvals.md     approval flow, manager policy, helper events
- docs/persistence.md   sqlite dbs, retention, state dir layout

claude.md is now the entry point — file map, reading paths
("pick the doc that matches your task"), quick reminders that
fit on one screen, and a small scratchpad section for in-flight
context. references the docs; the docs don't reference claude.md.

no content was lost — the docs/ files cover everything the old
claude.md did, plus things i wrote up better while extracting.

2026-05-15 20:17:11 +02:00

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Persistence + retention

Where state lives, what survives what, and how it's bounded.

Two sqlite databases

`/var/lib/hyperhive/broker.sqlite` (host)

Three tables, all in one file:

messages — every inter-agent / operator-bound message. sender / recipient / body / sent_at / delivered_at.
approvals — the queue. agent / kind (apply_commit | spawn) / commit_ref / requested_at / status / resolved_at / note.
operator_questions — ask_operator queue. asker / question / options_json / multi / asked_at / answered_at / answer.

Retention:

Broker::vacuum_delivered runs hourly via a tokio task in hive-c0re::main. Drops delivered rows older than 30 days. Undelivered rows are always kept (still in flight).
Approvals and questions are kept indefinitely — both are audit trails. actions::destroy and answered questions stay visible to anything that queries by id.

`/state/hyperhive-events.sqlite` (per agent)

Lives inside each container's bind-mounted /state/ dir (host path: /var/lib/hyperhive/agents/<name>/state/hyperhive-events.sqlite). One table:

events(id, ts, kind, payload_json) — every LiveEvent the harness emits during turn loop execution.

The harness writes; the host vacuums. hive-c0re::events_vacuum runs hourly and sweeps every existing agent state dir, applying the same two-stage delete to each file: drop rows older than 7 days, then trim to the 2000 most-recent. Centralising retention on the host means a misbehaving harness can't disable its own vacuum and agents don't need any cleanup wiring of their own.

Path overridable via HYPERHIVE_EVENTS_DB (for dev / no-/state setups). On open failure the Bus falls back to no-store mode rather than crashing the harness — events still broadcast over SSE, just nothing persisted.

State dirs (per agent)

Under /var/lib/hyperhive/agents/<name>/:

config/ — the proposed nix repo (manager-editable).
claude/ — claude OAuth credentials, bind-mounted RW to /root/.claude inside the container.
state/ — durable notes + the events.sqlite db, bind-mounted to /state inside the container.

Under /var/lib/hyperhive/applied/<name>/ — the hive-c0re-only applied repo (flake.nix + agent.nix) that the container actually builds from.

Destroy vs purge

DESTR0Y (default) — stops + removes the nspawn container, drops the systemd drop-in, fails any pending approvals. State dirs stay put; the agent appears in the dashboard's K3PT ST4T3 section as a tombstone with ⊕ R3V1V3 and PURG3 actions. R3V1V3 queues a Spawn approval that reuses the kept state on approve (no re-login).
PURG3 (opt-in via the dashboard button or hive-c0re destroy --purge <name>) — DESTR0Y plus wipes /var/lib/hyperhive/{agents,applied}/<name>/. Config history, claude creds, /state/ notes, and the events db are all gone. No undo.

The manager is non-destroyable from both paths (declarative container; would fight with the host's NixOS config).

Run-time dirs

/run/hyperhive/ is tmpfs-backed (systemd RuntimeDirectory=) but preserved across hive-c0re restarts via RuntimeDirectoryPreserve=yes. Without that, every restart wipes bind sources and existing containers can't be started.

/run/hyperhive/host.sock — admin socket (host-side CLI).
/run/hyperhive/manager/mcp.sock — manager-privileged socket.
/run/hyperhive/agents/<name>/mcp.sock — per-sub-agent socket (bind-mounted into the container as /run/hive/mcp.sock).

On startup, Coordinator::register_agent drops any prior socket task before rebinding — idempotent so a hive-c0re restart followed by rebuild alice recreates the agent's socket without a clean reinstall.

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