Feat: Bitbucket connector (#12332)

### What problem does this PR solve?

Feat: Bitbucket connector NOT READY TO MERGE

### Type of change


- [x] New Feature (non-breaking change which adds functionality)

common/data_source/utils.py

@@ -1150,6 +1150,42 @@ def parallel_yield(gens: list[Iterator[R]], max_workers: int = 10) -> Iterator[R
                     next_ind += 1
                 del future_to_index[future]
 
+
+def sanitize_filename(name: str, extension: str = "txt") -> str:
+    """
+    Soft sanitize for MinIO/S3:
+    - Replace only prohibited characters with a space.
+    - Preserve readability (no ugly underscores).
+    - Collapse multiple spaces.
+    """
+    if name is None:
+        return f"file.{extension}"
+
+    name = str(name).strip()
+
+    # Characters that MUST NOT appear in S3/MinIO object keys
+    # Replace them with a space (not underscore)
+    forbidden = r'[\\\?\#\%\*\:\|\<\>"]'
+    name = re.sub(forbidden, " ", name)
+
+    # Replace slashes "/" (S3 interprets as folder) with space
+    name = name.replace("/", " ")
+
+    # Collapse multiple spaces into one
+    name = re.sub(r"\s+", " ", name)
+
+    # Trim both ends
+    name = name.strip()
+
+    # Enforce reasonable max length
+    if len(name) > 200:
+        base, ext = os.path.splitext(name)
+        name = base[:180].rstrip() + ext
+
+    if not os.path.splitext(name)[1]:
+        name += f".{extension}"
+
+    return name
 F = TypeVar("F", bound=Callable[..., Any])
 
 class _RateLimitDecorator:
@@ -1246,4 +1282,4 @@ def retry_builder(
 
         return cast(F, wrapped_func)
 
-    return retry_with_default
+    return retry_with_default