feat: add list-of-dicts to dict one-liner

@@ -191,3 +191,9 @@ a, b = b, a

seen = set(); unique = [x for x in items if not (x in seen or seen.add(x))]

```

**Example:** `[1, 2, 2, 3, 1] → [1, 2, 3]`

## Convert a list of dictionaries to a single dictionary (by key)

```python

merged = {item['id']: item for item in list_of_dicts}

```

**Example:** `[{'id': 1, 'name': 'A'}, {'id': 2, 'name': 'B'}] → {1: {'id': 1, 'name': 'A'}, 2: {'id': 2, 'name': 'B'}}`