fix: rename R2 files with slugified prompt

r2_uploader.py

@@ -154,6 +154,13 @@ def _client(cfg: dict):
     )
 
 
+def _slugify(text):
+    import re
+    text = str(text).lower()
+    text = re.sub(r'[^\w\s-]', '', text)
+    text = re.sub(r'[\s_-]+', '-', text)
+    return text[:50]
+
 def _now_stamp() -> str:
     return datetime.datetime.now(datetime.timezone.utc).strftime("%Y%m%d%H%M%S")
 
@@ -256,7 +263,8 @@ def upload_asset(
                 data = fh.read()
 
         safe_uid = uid or "anonymous"
-        filekey = f"{namespace}/{safe_uid}/{_now_stamp()}-{uuid.uuid4().hex[:8]}{ext}"
+        slug = _slugify(prompt)
+        filekey = f"{namespace}/{safe_uid}/{slug}-{_now_stamp()}-{uuid.uuid4().hex[:8]}{ext}"
 
         s3 = _client(cfg)
         _ensure_bucket(s3, bucket)