pub fn upsert_reference_cache_v2_with_report(
config: &FoundryConfig,
build: &CachedBuild,
changed_abs_paths: &[String],
) -> Result<CacheSaveReport, String>Expand description
Incrementally upsert v2 cache shards for changed files, serializing
global metadata (path_to_abs, id_to_path_map, external_refs) from
the merged in-memory CachedBuild (root-key entry in ast_cache).
This ensures the disk cache always mirrors the authoritative in-memory
state, which has correct globally-remapped file IDs from
merge_scoped_cached_build. Only file shards for changed_abs_paths
are rewritten (the incremental fast-path); all other shards are preserved.
The full-project reconcile (save_reference_cache_with_report) is still
the canonical full save; this function bridges the gap between saves so
that a restart can warm-start from a reasonably up-to-date cache.