Tidy a few non-idiomatic patterns

aai_cli/code_gen/snippets.py

@@ -7,7 +7,7 @@
 
 
 def _has(*keys: str) -> Callable[[dict[str, object]], bool]:
-    return lambda merged: any(bool(merged.get(k)) for k in keys)
+    return lambda merged: any(merged.get(k) for k in keys)
 
 
 _SNIPPETS: list[_Entry] = [

aai_cli/init/scaffold.py

@@ -84,8 +84,10 @@ def scaffold(
     root = _template_root(template)
     target.mkdir(parents=True, exist_ok=True)
     _copy_tree(root, target)
-    lines = [f"ASSEMBLYAI_API_KEY={api_key or PLACEHOLDER_KEY}"]
-    lines += [f"{k}={v}" for k, v in (env_vars or {}).items()]
+    lines = [
+        f"ASSEMBLYAI_API_KEY={api_key or PLACEHOLDER_KEY}",
+        *(f"{k}={v}" for k, v in (env_vars or {}).items()),
+    ]
     env_path = target / ".env"
     # The .env holds the real API key, so create it readable/writable by the owner
     # only (0600) instead of the umask default (commonly 0644) — otherwise the key

aai_cli/jsonshape.py

@@ -37,12 +37,7 @@ def as_object_list(value: object) -> list[dict[str, object]] | None:
 
 
 def mapping_list(value: object) -> list[dict[str, object]]:
-    valid: list[dict[str, object]] = []
-    for item in object_list(value):
-        mapped = as_mapping(item)
-        if mapped is not None:
-            valid.append(mapped)
-    return valid
+    return [mapped for item in object_list(value) if (mapped := as_mapping(item)) is not None]
 
 
 def as_int(value: object, default: int = 0) -> int:

aai_cli/llm.py

@@ -124,8 +124,7 @@ def usage_of(response: ChatCompletion) -> dict[str, Any] | None:
     usage = response.usage
     if usage is None:
         return None
-    dumped: dict[str, Any] = usage.model_dump()
-    return dumped
+    return usage.model_dump()
 
 
 def transform_transcript(