414f68fb63
## Problem
The `deleteFromLocalCache` method was only setting `lastHashCheckedAt=0`
instead of actually deleting the cache entry. This caused old versions
to accumulate in the local cache when `invalidateAndRecompute` was
called.
### Flow that causes the leak:
1. `invalidateAndRecompute()` is called
2. `flush()` → `deleteFromLocalCache()` — **only sets
`lastHashCheckedAt=0`, keeps old data**
3. `recomputeDataFromProvider()` → `setInLocalCache()` — **adds new
version with new hash**
4. `cleanupStaleVersions()` — **never called** (only triggered from
`getFromLocalCache` path)
Result: Each `invalidateAndRecompute` call adds a new version to
`entry.versions` without removing the old one.
### Impact
For migration commands (like
`1-17-migrate-attachment-to-morph-relations`) that process thousands of
workspaces, this caused significant memory growth:
- Each workspace calls `getOrRecompute` (version 1)
- Then calls `invalidateAndRecompute` (version 2 added, version 1 stays)
- Memory accumulates as the command processes more workspaces
## Solution
Actually delete the local cache entry in `deleteFromLocalCache`, so
`recomputeDataFromProvider` starts fresh.
```typescript
// Before (memory leak)
if (isDefined(entry)) {
entry.lastHashCheckedAt = 0;
}
// After (proper cleanup)
this.localCache.delete(localKey);
```
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Co-authored-by: claude[bot] <41898282+claude[bot]@users.noreply.github.com>