# Memory Scoring Persistence — Analysis (2026-04-07)

## Problem

Scores computed by `score_memories_incremental` are written to
`ConversationEntry::Memory::score` (in-memory, serialized to
conversation.log) but never written back to the Store. This means:

- `Node.last_scored` stays at 0 — every restart re-scores everything
- `score_weight()` in `ops.rs:304-313` exists but is never called
- Scoring is wasted work on every session start

## Fix

In `mind/mod.rs` scoring completion handler (currently ~line 341-352),
after writing scores to entries, also persist to Store:

```rust
if let Ok(ref scores) = result {
    let mut ag = agent.lock().await;
    // Write to entries (already done)
    for (key, weight) in scores { ... }
    
    // NEW: persist to Store
    let store_arc = Store::cached().await.ok();
    if let Some(arc) = store_arc {
        let mut store = arc.lock().await;
        for (key, weight) in scores {
            store.score_weight(key, *weight as f32);
        }
        store.save().ok();
    }
}
```

This calls `score_weight()` which updates `node.weight` and sets
`node.last_scored = now()`. The staleness check in
`score_memories_incremental` (learn.rs:325) then skips recently-scored
nodes on subsequent runs.

## Files

- `src/mind/mod.rs:341-352` — scoring completion handler (add Store write)
- `src/hippocampus/store/ops.rs:304-313` — `score_weight()` (exists, unused)
- `src/subconscious/learn.rs:322-326` — staleness check (already correct)
- `src/hippocampus/store/types.rs:219` — `Node.last_scored` field