Fix TheTVDB matching for 04x01 filenames and add all-seasons mode.

Parse NxNN and SxxExx layouts, match across every season when season is 0, and rewrite season plus episode numbers.

Co-authored-by: Cursor <[email protected]>

engine/tvdb_client.py

@@ -189,5 +189,44 @@ class TvdbClient:
             if not links.get("next"):
                 break
             page += 1
-        episodes.sort(key=lambda e: e.number)
+        episodes.sort(key=lambda e: (e.season_number, e.number))
+        return episodes
+
+    def get_all_episodes(
+        self,
+        series_id: int,
+        season_type: str = "default",
+    ) -> list[TvdbEpisode]:
+        """Fetch every episode for a series (all seasons), paginated."""
+        episodes: list[TvdbEpisode] = []
+        page = 0
+        while True:
+            payload = self._request(
+                "GET",
+                f"/series/{series_id}/episodes/{season_type}",
+                params={"page": page},
+            )
+            batch = (payload.get("data") or {}).get("episodes") or []
+            if not batch:
+                break
+            for ep in batch:
+                number = ep.get("number")
+                season = ep.get("seasonNumber")
+                name = ep.get("name")
+                if number is None or season is None or not name:
+                    continue
+                if int(season) == 0:
+                    continue
+                episodes.append(
+                    TvdbEpisode(
+                        number=int(number),
+                        season_number=int(season),
+                        name=str(name),
+                    )
+                )
+            links = payload.get("links") or {}
+            if not links.get("next"):
+                break
+            page += 1
+        episodes.sort(key=lambda e: (e.season_number, e.number))
         return episodes