Allow configuring default sort column for the processviewer widget via meta key

Bắt đầu trong frontend/app/view/processviewer/processviewer.tsx, đặc biệt là kiểu SortCol và việc khởi tạo atom mặc định ở các dòng 32 và 113-114. Theo dõi cách meta của block được đọc cho widget processviewer, sau đó xác minh rằng hai khóa meta được yêu cầu thiết lập thứ tự sắp xếp ban đầu, trong khi hành vi sắp xếp lại thủ công bằng cách nhấp vẫn không thay đổi.

Summary

The processviewer widget's default sort is hardcoded to CPU descending. There's no way to configure a different default — every fresh processviewer block opens sorted by CPU, and the user has to manually click another column header (e.g. Memory) every time. The sort preference doesn't persist across block recreations either, since it's stored only in a runtime atom rather than block meta.

For users who primarily care about a non-CPU column (memory hogs being the obvious case), CPU is a poor default to be locked into.

Current behavior

In frontend/app/view/processviewer/processviewer.tsx:113-114:

this.sortByAtom = jotai.atom<SortCol>("cpu");
this.sortDescAtom = jotai.atom<boolean>(true);

Hardcoded. The SortCol type at line 32 already enumerates all valid columns:

type SortCol = "pid" | "command" | "user" | "cpu" | "mem" | "status" | "threads";

On Windows the visible columns are PID / Command / CPU% / Memory (status, user, threads are hidden via hideOnPlatform), so the meaningful defaults a Windows user would want are one of those four. Other platforms get all seven.

Request

Please add meta keys to control the initial sort, e.g.:

• processviewer:sortby — one of the SortCol values ("pid" | "command" | "user" | "cpu" | "mem" | "status" | "threads"), default "cpu"
• processviewer:sortdesc — bool, default true

So a user can put this in their widgets.json to override the default processviewer widget to sort by memory:

"defwidget@processviewer": {
    "display:order": -1,
    "icon": "list-tree",
    "label": "processes",
    "blockdef": {
        "meta": {
            "view": "processviewer",
            "processviewer:sortby": "mem",
            "processviewer:sortdesc": true
        }
    }
}

Manual click-to-resort behavior would still work as today; the meta keys only control the initial state of the atoms.