fix: stabilize library paths and subscription matching

internal/service/subscription_pack.go

@@ -0,0 +1,23 @@
+package service
+
+import (
+	"regexp"
+	"strings"
+)
+
+var (
+	seriesPackRE = regexp.MustCompile(`(?i)(complete|batch|合集|全集|全\s*\d+\s*[集话話期]|整季|全季|s\d{1,2}\s*(?:complete|batch|pack)|season\s*\d{1,2}\s*(?:complete|batch|pack)|s\d{1,2}e\d{1,3}\s*[-~–—]\s*(?:s\d{1,2})?e?\d{1,3}|第\s*\d+\s*[-~–—]\s*\d+\s*[集话話期])`)
+	seasonOnlyRE = regexp.MustCompile(`(?i)(?:^|[\s._-])(?:s|season)\s*\d{1,2}(?:[\s._-]|$)|第\s*\d+\s*季`)
+)
+
+func isSeriesPackTitle(title string) bool {
+	title = strings.TrimSpace(title)
+	if title == "" {
+		return false
+	}
+	if seriesPackRE.MatchString(title) {
+		return true
+	}
+	_, episode := ParseEpisode(title)
+	return episode == 0 && seasonOnlyRE.MatchString(title)
+}