Struct StartupOutcome 

pub struct StartupOutcome {
    pub data_dir: PathBuf,
    pub db_path: PathBuf,
    pub config: SoloConfig,
    pub schema_version: u32,
    pub hnsw: Arc<dyn VectorIndex + Send + Sync>,
    pub embedder_id: i64,
    pub replay: ReplayReport,
    pub drift: DriftReport,
    pub used_bak_snapshot: bool,
    pub started_fresh: bool,
    pub rebuild: RebuildReport,
}

What the startup chain hands back to the daemon main. Mostly opaque because the daemon doesn’t need to inspect any of this — it just feeds the writer actor + reader pool.

Fields

data_dir: PathBuf

db_path: PathBuf

config: SoloConfig

schema_version: u32

Schema version after migrations. May equal pre-startup version if nothing was pending.

hnsw: Arc<dyn VectorIndex + Send + Sync>

The HNSW. Wrapped in Arc<dyn VectorIndex> so it can be shared with the read pool per ADR-0003 §O2.

embedder_id: i64

Resolved embedders.embedder_id for the persisted config’s embedder identity. Lazy-inserted on first daemon start; cached in the WriterActor for every subsequent INSERT INTO embeddings.

replay: ReplayReport

Pending-index replay statistics.

drift: DriftReport

Drift between SQL episodes WHERE tier='hot' and HNSW length, after replay. Daemon decides what to do (warn / refuse / rebuild) — startup itself only reports.

used_bak_snapshot: bool

True if we fell back to the .bak snapshot.

started_fresh: bool

True if no usable snapshot was found and we started with a fresh index. (Independent of rebuild below — started_fresh && rebuild.rows_added > 0 means the snapshot was missing but the index was rebuilt from the embeddings table.)

rebuild: RebuildReport

Stats from rebuild_hnsw_from_sql after a missing-snapshot fallback. All zeros in the steady state (snapshot loaded fine) and after solo init (no rows yet). Non-zero only after solo reembed has wiped the snapshots. rows_skipped > 0 means the rebuild degraded around corrupt rows — recall coverage will be incomplete for those rowids until the user investigates and re-runs reembed.

Trait Implementations

impl Debug for StartupOutcome

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.