Fix Windows MCP subprocess timeout for git detection (bd-r79z)

- Add shell=True for subprocess.run() on Windows platform
- Improves git command PATH resolution on Windows
- Add debug logging for git detection failures
- Fixes GH#245 timeout issue where git rev-parse times out in MCP server

Amp-Thread-ID: https://ampcode.com/threads/T-71b3ce65-87cb-451a-a30d-162d76d92f9c
Co-authored-by: Amp <amp@ampcode.com>

integrations/beads-mcp/src/beads_mcp/server.py

@@ -213,10 +213,12 @@ def _resolve_workspace_root(path: str) -> str:
             capture_output=True,
             text=True,
             check=False,
+            shell=sys.platform == "win32",
         )
         if result.returncode == 0:
             return result.stdout.strip()
-    except Exception:
+    except Exception as e:
+        logger.debug(f"Git detection failed for {path}: {e}")
         pass
     
     return os.path.abspath(path)

integrations/beads-mcp/src/beads_mcp/tools.py

@@ -1,14 +1,18 @@
 """MCP tools for beads issue tracker."""
 
 import asyncio
+import logging
 import os
 import subprocess
+import sys
 from contextvars import ContextVar
 from functools import lru_cache
 from typing import Annotated, TYPE_CHECKING
 
 from .bd_client import create_bd_client, BdClientBase, BdError
 
+logger = logging.getLogger(__name__)
+
 if TYPE_CHECKING:
     from typing import List
 from .models import (
@@ -75,10 +79,12 @@ def _resolve_workspace_root(path: str) -> str:
             capture_output=True,
             text=True,
             check=False,
+            shell=sys.platform == "win32",
         )
         if result.returncode == 0:
             return result.stdout.strip()
-    except Exception:
+    except Exception as e:
+        logger.debug(f"Git detection failed for {path}: {e}")
         pass
     
     return os.path.abspath(path)