feat: per-user board ordering in the navigation

[Lightshadow02]

• Resolves: recurring request to control the order of boards in the navigation (related discussion: Feature request: Sorting of the board list by recent activity #7871)
• Target version: main

Summary

The left navigation sorts boards alphabetically (hard-coded), which does not match how people prioritise their boards. This adds per-user manual ordering:

• New per-user config key boardOrder (JSON array of board ids) through the existing ConfigService user-config plumbing and the existing OCS POST /config/{key} route — no schema migration, no shared state: each user has their own order and boards themselves are untouched
• getAll() exposes boardOrder to the frontend initial state; value is validated (list of ints) and cleaned on write; documented in docs/API.md
• Frontend: drag & drop of boards in the "All boards" navigation category only (archived/shared categories keep the alphabetical sort), sortBoards() helper — user order first, boards not in the list appended alphabetically (new/newly shared boards), stale ids ignored
• Rename input and actions menu are non-drag areas; failures show an error toast and the order reverts
• Jest tests for the helper; PHPUnit tests for the config round-trip and validation

How to test

1. Drag boards into a custom order in the "All boards" section; F5 persists it
2. A second user on the same boards keeps their own independent order
3. New boards appear at the end of the list alphabetically

Checklist

• Code is properly formatted
• Sign-off message is added to all commits
• Tests (unit, integration, api and/or acceptance) are included
• Documentation (manuals or wiki) has been updated or is not required

🤖 Generated with Claude Code

[luka-nextcloud]

Should be updated to @return bool|array{id: string, displayname: string}[]|int[] as well

[Lightshadow02]

Good catch, updated in 9caa17e — the annotation now includes int[].

[luka-nextcloud]

I think we should add an icon to indicate and trigger the drag function since it is showing the board url when user trying to drag the board.

[Lightshadow02]

Makes sense — done in 9caa17e. Boards are now dragged through a dedicated handle icon (drag-vertical, revealed on row hover, cursor: grab) via drag-handle-selector, so grabbing the row itself no longer starts a drag and the browser's native link drag (the URL ghost from your screenshot) can't be triggered by the reorder gesture anymore.

[Lightshadow02]

@luka-nextcloud thanks for the review! Both points are addressed in 9caa17e:

• ConfigService::get() return annotation now includes int[]
• boards are reordered through a dedicated drag handle (drag-vertical icon, revealed on row hover, cursor: grab) wired via drag-handle-selector, so grabbing the row itself no longer starts a drag and the native link drag with the URL ghost from your screenshot can no longer be triggered by the reorder gesture

Whenever you have a moment for another look.

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