Forces unbuffered output (helpful on Windows)

Author: mariusei

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "scantool"
-version = "0.12.0"
+version = "0.13.0"
 description = "MCP server for multi-language code analysis with structure extraction, metadata parsing, and search capabilities across Python, JavaScript, TypeScript, Rust, Go, C/C++, Java, PHP, C#, Ruby, Zig, HTML, CSS, SCSS, Markdown, Swift, plain text, and images"
 readme = "README.md"
 requires-python = ">=3.11"
@@ -20,7 +20,7 @@ classifiers = [
     "Topic :: Software Development :: Libraries :: Python Modules",
 ]
 dependencies = [
-    "fastmcp>=2.12.4",
+    "fastmcp>=2.14.4",  # Includes stdio handling improvements
     "tree-sitter>=0.23.2",
     "tree-sitter-python>=0.23.6",
     "tree-sitter-javascript>=0.23.1",

src/scantool/__init__.py

@@ -1,6 +1,20 @@
 """File Scanner MCP - Beautiful file structure scanner with tree formatting."""
 
-__version__ = "0.1.0"
+import os
+import sys
+
+# === Windows/stdio buffering fix ===
+# Prevents deadlocks when Claude Code sends parallel MCP requests over stdio.
+# Without this, stdout buffering on Windows can cause responses to get stuck.
+# See: https://github.com/jlowin/fastmcp/issues/1625
+os.environ.setdefault('PYTHONUNBUFFERED', '1')
+
+if hasattr(sys.stdout, 'reconfigure'):
+    sys.stdout.reconfigure(write_through=True)  # type: ignore[union-attr]
+if hasattr(sys.stderr, 'reconfigure'):
+    sys.stderr.reconfigure(write_through=True)  # type: ignore[union-attr]
+
+__version__ = "0.12.0"
 
 from .server import main