read and write tools, moved schemas to tool/__init__

tests/test_files.py

@@ -0,0 +1,46 @@
+import asyncio
+from unittest.mock import MagicMock
+
+import pytest
+
+from tools.files import read_file, write_file
+
+
+@pytest.mark.unit
+async def test_read_file_with_no_sandbox():
+    """Test read_file handles missing sandbox."""
+    result = await read_file("test.txt", sandbox=None)
+    assert "error" in result.lower()
+
+
+@pytest.mark.integration
+async def test_real_write_then_read():
+    """Integration: Write file, then read it back."""
+    from sandbox.session import PodmanSandbox
+
+    async with PodmanSandbox() as sb:
+        # Write
+        result = await write_file("test.txt", "Hello, world!", sb)
+        assert "✓" in result
+
+        # Read back
+        content = await read_file("test.txt", sb)
+        assert "Hello, world!" in content
+
+        # Cleanup
+        await asyncio.to_thread(sb.run, "rm test.txt")
+
+
+@pytest.mark.integration
+async def test_real_write_creates_directories():
+    """Integration: write_file creates parent directories."""
+    from sandbox.session import PodmanSandbox
+
+    async with PodmanSandbox() as sb:
+        result = await write_file("dir1/dir2/test.txt", "nested", sb)
+        assert "✓" in result
+
+        # Verify file exists
+        ls_result = await asyncio.to_thread(sb.run, "ls -R")
+        assert "dir1" in ls_result
+        assert "dir2" in ls_result