const std = @import("std");const js_host_workspace = @import("../../core/hosts/js_host_workspace.zig");const tool_dispatch = @import("../../core/tooling/tool_dispatch.zig");const run_command = @import("run_command.zig"); const Allocator = std.mem.Allocator; pub fn decode(ctx: tool_dispatch.DispatchContext, args_json: []const u8) tool_dispatch.DispatchError!tool_dispatch.DecodeResult {    var parsed = std.json.parseFromSlice(std.json.Value, ctx.allocator, args_json, .{}) catch {        return failure(ctx.allocator, "browser run_command arguments must be valid JSON");    };    defer parsed.deinit();    if (parsed.value != .object) {        return failure(ctx.allocator, "browser run_command arguments must be an object");    }    const command_value = parsed.value.object.get("command") orelse {        return failure(ctx.allocator, "browser run_command requires string field \"command\"");    };    if (command_value != .string) {        return failure(ctx.allocator, "browser run_command field \"command\" must be a string");    }    if (parsed.value.object.count() != 1) {        return failure(ctx.allocator, "browser run_command accepts only the \"command\" field");    }    if (command_value.string.len > js_host_workspace.max_command_bytes) {        return failure(ctx.allocator, "browser run_command field \"command\" exceeds 65536 bytes");    }     const command = try ctx.allocator.dupe(u8, command_value.string);    errdefer ctx.allocator.free(command);    const input = try ctx.allocator.create(run_command.Input);    errdefer ctx.allocator.destroy(input);    input.* = .{ .command = command };    return .{ .input = .{ .ptr = input, .deinit_fn = inputDeinit } };} fn failure(alloc: Allocator, message: []const u8) Allocator.Error!tool_dispatch.DecodeResult {    return .{ .failure = try alloc.dupe(u8, message) };} fn inputDeinit(ptr: *anyopaque, alloc: Allocator) void {    const input: *run_command.Input = @ptrCast(@alignCast(ptr));    input.deinit(alloc);    alloc.destroy(input);}