Fix Windows startup and portable memory reporting

.github/workflows/ci.yml

@@ -14,10 +14,10 @@ jobs:
         python-version: ["3.10", "3.11", "3.12", "3.13"]
 
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
 
       - name: Install uv
-        uses: astral-sh/setup-uv@eac588ad8def6316056a12d4907a9d4d84ff7a3b # v7
+        uses: astral-sh/setup-uv@eac588ad8def6316056a12d4907a9d4d84ff7a3b # v7.3.0
 
       - name: Set up Python ${{ matrix.python-version }}
         run: uv python install ${{ matrix.python-version }}
@@ -33,3 +33,24 @@ jobs:
 
       - name: Run tests
         run: uv run pytest -v
+
+  windows-smoke:
+    runs-on: windows-latest
+
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@eac588ad8def6316056a12d4907a9d4d84ff7a3b # v7.3.0
+
+      - name: Set up Python 3.13
+        run: uv python install 3.13
+
+      - name: Install dependencies
+        env:
+          UV_DEFAULT_INDEX: https://pypi.org/simple
+          UV_INDEX_URL: https://pypi.org/simple
+        run: uv sync --all-extras
+
+      - name: Run Windows compatibility smoke test
+        run: uv run pytest tests/test_windows_compat.py -v

pyproject.toml

@@ -10,7 +10,8 @@ authors = [
 ]
 license = "Apache-2.0"
 dependencies = [
-    "fastmcp>=2.14.4",
+    "fastmcp>=2.14.4,<3",
+    "psutil>=6.1",
 ]
 
 [project.scripts]

task_queue.py

@@ -11,7 +11,6 @@
 import codecs
 import json
 import os
-import resource
 import signal
 import sqlite3
 import sys
@@ -22,6 +21,7 @@
 from datetime import datetime, timezone
 from pathlib import Path
 
+import psutil
 from fastmcp import FastMCP
 from fastmcp.server.dependencies import get_context
 from fastmcp.tools.tool import ToolResult
@@ -318,11 +318,7 @@ def clear_output_files() -> int:
 
 def get_memory_mb() -> float:
     """Get current process memory usage in MB (RSS - resident set size)."""
-    usage = resource.getrusage(resource.RUSAGE_SELF)
-    # ru_maxrss is in bytes on Linux, kilobytes on macOS
-    if os.uname().sysname == "Darwin":
-        return usage.ru_maxrss / (1024 * 1024)  # KB to MB
-    return usage.ru_maxrss / 1024  # bytes to MB on Linux
+    return psutil.Process(os.getpid()).memory_info().rss / (1024 * 1024)
 
 
 # --- Core Queue Logic ---

tests/test_windows_compat.py

@@ -0,0 +1,50 @@
+"""Cross-platform compatibility tests for the Python package."""
+
+import os
+import subprocess
+import sys
+from pathlib import Path
+
+
+REPO_ROOT = Path(__file__).resolve().parents[1]
+
+
+def test_memory_reporting_does_not_require_posix_resource(tmp_path):
+    script = """
+import builtins
+
+real_import = builtins.__import__
+
+def import_without_resource(name, globals=None, locals=None, fromlist=(), level=0):
+    if name == "resource" and globals and globals.get("__name__") == "task_queue":
+        raise ModuleNotFoundError("No module named 'resource'")
+    return real_import(name, globals, locals, fromlist, level)
+
+builtins.__import__ = import_without_resource
+
+import task_queue
+
+assert task_queue.get_memory_mb() > 0
+
+# Verify byte conversion and current RSS rather than a lifetime peak value.
+from types import SimpleNamespace
+from unittest.mock import patch
+
+with patch.object(task_queue.psutil, "Process") as process:
+    process.return_value.memory_info.return_value = SimpleNamespace(rss=3 * 1024 * 1024)
+    assert task_queue.get_memory_mb() == 3.0
+    process.assert_called_once_with(task_queue.os.getpid())
+"""
+    env = os.environ.copy()
+    env["TASK_QUEUE_DATA_DIR"] = str(tmp_path)
+
+    result = subprocess.run(
+        [sys.executable, "-c", script],
+        cwd=REPO_ROOT,
+        env=env,
+        capture_output=True,
+        text=True,
+        timeout=30,
+    )
+
+    assert result.returncode == 0, result.stderr