```python
# /// intent
# goal   = "Print every file suffix used under src with the number of files that have it, sorted by suffix."
# reads  = ["src"]
# writes = []
# output = "printed"
# ///

import json
from pathlib import Path
from collections import Counter

config_path = Path('data/config.json')
config_text = config_path.read_text()
config = json.loads(config_text)

src_dir = Path('src')
suffixes = Counter()

for entry in src_dir.iterdir():
    if entry.is_file():
        suffix = entry.suffix.lstrip('.')
        if suffix:
            suffixes[suffix] += 1

sorted_suffixes = sorted(suffixes.items())

for suffix, count in sorted_suffixes:
    print(f"{suffix} {count}")
```