feat: fetchAndUpdateImdbData — download IMDB datasets and populate imdb table

- Check for imdb entries with NULL average_rating
- Download title.basics.tsv.gz and title.ratings.tsv.gz to imdbdata/
- Decompress alongside gzip originals
- Parse only rows matching our imdb_ids (memory-efficient)
- Update: average_rating, num_votes, title_type, primary_title,
  original_title, start_year, runtime_minutes
- Results: 3394 ratings, 3093 basics updated out of 3448 entries

1 files changed, 4 insertions, 0 deletions

diff --git a/src/main.go b/src/main.go
index 0aa01bb..123cc64 100644
--- a/src/main.go
+++ b/src/main.go
@@ -190,4 +190,8 @@ func main() {
 	if err = app.populateImdbTable(); err != nil {
 		log.Fatalf("populateImdbTable: %v", err)
 	}
+
+	if err = app.fetchAndUpdateImdbData(); err != nil {
+		log.Fatalf("fetchAndUpdateImdbData: %v", err)
+	}
 }