fix(youtube): use platform-aware yt-dlp config path and locale-safe reads (#225)

agent_reach/utils/text.py

@@ -0,0 +1,14 @@
+"""UTF-8-safe text helpers for cross-platform file operations."""
+
+from __future__ import annotations
+
+from pathlib import Path
+
+
+def read_utf8_text(path: str | Path, default: str = "") -> str:
+    """Read text as UTF-8 with replacement semantics."""
+
+    target = Path(path)
+    if not target.exists():
+        return default
+    return target.read_text(encoding="utf-8", errors="replace")