read and write tools, moved schemas to tool/__init__

tools/files.py

@@ -0,0 +1,78 @@
+import asyncio
+from pathlib import Path
+
+
+async def read_file(filepath: str, sandbox=None) -> str:
+    """Read a file from workspace."""
+    if sandbox is None:
+        return "Error: No sandbox available"
+
+    try:
+        result = await asyncio.to_thread(sandbox.run, f"cat {filepath}")
+        return result
+    except Exception as e:
+        return f"Error reading file: {e}"
+
+
+async def write_file(filepath: str, content: str, sandbox=None) -> str:
+    """Write content to a file."""
+    if sandbox is None:
+        return "Error: No sandbox available"
+
+    # Validate path
+    if filepath.startswith("/") or ".." in filepath:
+        return f"Error: Invalid path '{filepath}'. Use relative paths within workspace."
+
+    try:
+        # Escape content for shell
+        escaped = content.replace("'", "'\\''")
+
+        # Create parent dirs if needed
+        parent = str(Path(filepath).parent)
+        if parent and parent != ".":
+            await asyncio.to_thread(sandbox.run, f"mkdir -p {parent}")
+
+        # Write file
+        await asyncio.to_thread(
+            sandbox.run, f"cat > {filepath} << 'EOF'\n{content}\nEOF"
+        )
+
+        return f"✓ Wrote {filepath}"
+    except Exception as e:
+        return f"Error writing file: {e}"
+
+
+# Schemas
+READ_FILE_SCHEMA = {
+    "name": "read_file",
+    "description": "Read the contents of a file from the workspace",
+    "input_schema": {
+        "type": "object",
+        "properties": {
+            "filepath": {
+                "type": "string",
+                "description": "Path to file relative to workspace (e.g., 'app.py', 'src/utils.py')",
+            }
+        },
+        "required": ["filepath"],
+    },
+}
+
+WRITE_FILE_SCHEMA = {
+    "name": "write_file",
+    "description": "Write content to a file in the workspace. Creates parent directories if needed.",
+    "input_schema": {
+        "type": "object",
+        "properties": {
+            "filepath": {
+                "type": "string",
+                "description": "Path to file relative to workspace (e.g., 'app.py', 'data/config.json')",
+            },
+            "content": {
+                "type": "string",
+                "description": "Content to write to the file",
+            },
+        },
+        "required": ["filepath", "content"],
+    },
+}