refactor(memory): share stale index cleanup

src/memory/sync-stale.ts

@@ -0,0 +1,42 @@
+import type { DatabaseSync } from "node:sqlite";
+
+export function deleteStaleIndexedPaths(params: {
+  db: DatabaseSync;
+  source: string;
+  activePaths: Set<string>;
+  vectorTable: string;
+  ftsTable: string;
+  ftsEnabled: boolean;
+  ftsAvailable: boolean;
+  model: string;
+}) {
+  const staleRows = params.db
+    .prepare(`SELECT path FROM files WHERE source = ?`)
+    .all(params.source) as Array<{ path: string }>;
+
+  for (const stale of staleRows) {
+    if (params.activePaths.has(stale.path)) {
+      continue;
+    }
+    params.db
+      .prepare(`DELETE FROM files WHERE path = ? AND source = ?`)
+      .run(stale.path, params.source);
+    try {
+      params.db
+        .prepare(
+          `DELETE FROM ${params.vectorTable} WHERE id IN (SELECT id FROM chunks WHERE path = ? AND source = ?)`,
+        )
+        .run(stale.path, params.source);
+    } catch {}
+    params.db
+      .prepare(`DELETE FROM chunks WHERE path = ? AND source = ?`)
+      .run(stale.path, params.source);
+    if (params.ftsEnabled && params.ftsAvailable) {
+      try {
+        params.db
+          .prepare(`DELETE FROM ${params.ftsTable} WHERE path = ? AND source = ? AND model = ?`)
+          .run(stale.path, params.source, params.model);
+      } catch {}
+    }
+  }
+}