Erich Blume ed8c7a733a hephd local mode: file lock + JSON-RPC over unix socket ... Slice 6 (tech-spec §3, §6, §10). First async component — the per-device daemon in local mode. - `LockGuard`: exclusive advisory flock on a sidecar `<db>.lock`; a second acquire fails and releases on drop (the §3.1 lock handoff). - JSON-RPC (line-delimited): `rpc::dispatch` maps node/task/next/links/log methods onto the heph-core Store; `Daemon::serve` accepts unix-socket connections and runs dispatch on tokio's blocking pool behind an Arc<Mutex<LocalStore>> (DB never touches an async worker). - Synchronous `Client` for surfaces/CLI; `hephd` binary (clap) opens the store under lock and serves the default socket. - heph-core model/ranking types are now serde-(de)serializable; added node.tombstone + Store::tombstone_node. Tests: 2 lock unit tests + 5 real-socket e2e (round-trip with clock injection, next, error paths, recurring roll-forward over RPC, 8-client concurrency). 60 tests green. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>		2026-05-31 20:28:15 -07:00
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heph-core	hephd local mode: file lock + JSON-RPC over unix socket	2026-05-31 20:28:15 -07:00
hephd	hephd local mode: file lock + JSON-RPC over unix socket	2026-05-31 20:28:15 -07:00