fix(sf): getRelevantMemoriesRanked pool size never less than limit

Pool was Math.min(50, limit * 5). For default limit=10 this gives 50
(intended 5× oversample for rerank). But for limit=100 it gives 50 —
caller asking for 100 results would silently get at most 50.

Now: max(limit, limit * 5), capped at 200 to bound rerank latency on
huge requests. Default behavior unchanged for limit ≤ 10; large
requests now work correctly.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/resources/extensions/sf/memory-store.ts

@@ -156,7 +156,12 @@ export async function getRelevantMemoriesRanked(
 	limit = 10,
 ): Promise<Memory[]> {
 	if (!isDbAvailable()) return [];
-	const pool = getActiveMemoriesRanked(Math.min(50, limit * 5));
+	// Pool sizing: 5× oversample for the embedding rerank to be meaningful,
+	// but never less than `limit` itself — otherwise asking for limit=100
+	// would silently cap at pool=50 and return only 50 results. Hard ceiling
+	// at 200 to bound rerank latency on huge requests.
+	const poolSize = Math.min(200, Math.max(limit, limit * 5));
+	const pool = getActiveMemoriesRanked(poolSize);
 	if (pool.length === 0 || !query.trim()) {
 		return pool.slice(0, limit);
 	}