Added Mover and other improvements

src/ComicInfoBuilder.py

@@ -365,8 +365,11 @@ class ComicInfoBuilder:
         add("Volume", volume)
 
         # ----- Description with MAL stats -----------------------------------
-        mal_id = self._mal_resolver.find_mal_id(
-            md.get("title") or self._manga_title)
+        # Prefer the MAL ID from MangaBaka's source map — avoids an extra
+        # Jikan title-search request and is more reliable than fuzzy matching.
+        mal_id = (self._mal_id_from_source(md)
+                  or self._mal_resolver.find_mal_id(
+                      md.get("title") or self._manga_title))
         mal_stats = self._mal_resolver.get_stats(mal_id)
         add("Summary", self._build_summary(md, sd, mal_stats))
 
@@ -417,7 +420,8 @@ class ComicInfoBuilder:
                 pass
 
         # ----- ISBN (GTIN) from volume work ---------------------------------
-        isbn = (work or {}).get('identifiers')[0].get("id")
+        identifiers = (work or {}).get("identifiers") or []
+        isbn = identifiers[0].get("id") if identifiers else None
         add("GTIN", isbn)
 
         # ----- SeriesGroup from related works -------------------------------
@@ -741,6 +745,19 @@ class ComicInfoBuilder:
                     return str(info["id"])
         return None
 
+    @staticmethod
+    def _mal_id_from_source(md: dict) -> "int | None":
+        for raw_key, info in (md.get("source") or {}).items():
+            if _normalise_key(raw_key) in ("myanimelist", "mal"):
+                if isinstance(info, dict):
+                    mid = info.get("id")
+                    if mid is not None:
+                        try:
+                            return int(mid)
+                        except (TypeError, ValueError):
+                            pass
+        return None
+
     @staticmethod
     def _publishers_by_type(md: dict, ptype: str) -> "str | None":
         names = [p.get("name") for p in (md.get("publishers") or [])