feat(coding-agent): added multi-cell Python execution with persistent kernel

- Added multi-cell Python execution with sequential processing in persistent kernel.
- Changed Python tool API to use cells array instead of single code parameter.
- Renamed workdir parameter to cwd across Bash and Python tools for consistency.
- Fixed indentation adjustment logic for mixed indentation levels in patch tool.

packages/coding-agent/test/tools/python.test.ts

@@ -56,11 +56,11 @@ describe("python tool schema", () => {
 		};
 
 		expect(schema.type).toBe("object");
-		expect(schema.properties.code.type).toBe("string");
+		expect(schema.properties.cells.type).toBe("array");
 		expect(schema.properties.timeoutMs.type).toBe("number");
-		expect(schema.properties.workdir.type).toBe("string");
+		expect(schema.properties.cwd.type).toBe("string");
 		expect(schema.properties.reset.type).toBe("boolean");
-		expect(schema.required).toEqual(["code"]);
+		expect(schema.required).toEqual(["cells"]);
 	});
 });