Summary
Today the vector graph builds only via:

• Implicit search (ensureGraphAvailable() → buildGraphFromScratch()), or
• SQL: REBUILD INDEX <name>.

There’s no public Java API to trigger a graph build/rebuild without a dummy search or SQL.

Ask
Add a public method on LSMVectorIndex (e.g., rebuildNow() / rebuildNow(GraphBuildCallback cb)) that rebuilds from persisted pages and persists the graph. This lets apps force the expensive build right after ingest and before serving.

Scope/Notes

• Keep it vector-index–specific (no Index interface change).
• Internally acquire the write lock and reuse existing buildGraphFromScratch() retry logic.
• Document preconditions (not during compaction; rebuilds from on-disk pages; persists graph).
• Accessible via schema lookup (db.getSchema().getIndexByName(...) → cast to LSMVectorIndex).

Help
I’m happy to draft the PR for this if desired.