refactor: update output directory handling in Crowdin translation script

- Removed the default output directory constant and updated the logic to set the output directory based on the provided argument or default to a "translated" subdirectory within the bundle directory.
- Improved help text for the output directory argument to clarify its default behavior.

tools/translate_crowdin.py

@@ -36,7 +36,6 @@ NS = {"x": XLIFF_NS}
 REPO_ROOT = Path(__file__).resolve().parent.parent
 WORK_DIR = REPO_ROOT / ".crowdin-translate"
 BUNDLES_DIR = WORK_DIR / "bundles"
-DEFAULT_OUTPUT_DIR = WORK_DIR / "translated"
 ERRORS_DIR = WORK_DIR / "errors"
 DOMAIN_PROMPT_CACHE_DIR = WORK_DIR / "domain-prompt-cache"
 
@@ -876,7 +875,7 @@ def build_parser() -> argparse.ArgumentParser:
     p.add_argument("--skip-upload", action="store_true",
                    help="Skip uploading translations to Crowdin")
     p.add_argument("--output-dir", type=Path, default=None,
-                   help=f"Output directory (default: {DEFAULT_OUTPUT_DIR})")
+                   help="Output directory (default: <bundle-dir>/translated/)")
     p.add_argument("--include-docs", action="store_true",
                    help="Include /docs/ files in translation (skipped by default)")
     p.add_argument("-v", "--verbose", action="store_true",
@@ -927,8 +926,12 @@ def main() -> None:
     else:
         bundle_dir = download_bundle(args.bundle_id)
 
-    output_dir = args.output_dir or DEFAULT_OUTPUT_DIR
+    if args.output_dir:
+        output_dir = args.output_dir
+    else:
+        output_dir = bundle_dir / "translated"
     output_dir.mkdir(parents=True, exist_ok=True)
+    log.info("Output directory: %s", output_dir)
 
     exclude_paths: list[str] | None = None if args.include_docs else ["/docs/"]
     if exclude_paths: