Tree reorg must MOVE/reparent bots; never rename to 归档- and recreate #452

Environment

• Owner Mac sidebar on FlyBot after main e7acf99 (Tree organizes itself by role: groups under leads, merge, daily tidy, undo #448 Tree self-organization), Asia/Shanghai 2026-10-19.
• Cloud agents unavailable (region); fix locally.

Steps to reproduce

1. Install / update to main with Tree organizes itself by role: groups under leads, merge, daily tidy, undo #448 (tree self-organization by role).
2. Have a FlyBot specialist set under Chief (e.g. FlyBot 开发 / 维护 / 测试 / 仓管).
3. Let reorganization or a Main-Bot "archive" attempt run (full level / tidy / LLM update_bot).
4. Open the Bot sidebar.

Actual

• Sidebar shows both FlyBot 开发 and 归档-FlyBot 开发 (same for 维护 / 测试 / 仓管).
• Reorg / "archive" path effectively renames the old Bot to 归档-… and creates a new Bot with the original name, instead of reparenting the existing Bot.
• Archived (or 归档-*) Bots still appear in the main Bot list under Chief (tagged or prefixed), so the list doubles.

Expected

• Tree reorganization moves / reparents existing Bots (set parent); it never renames a Bot to 归档-… and never recreates a same-role Bot to achieve grouping.
• Archive = tree field archived (+ hide from the default sidebar); chat/memory kept; delete stays the owner's click.
• Archived Bots (and leftover 归档-* names from tonight) do not show in the main Bot list.
• One-shot repair restores tonight's 归档-* Bots (strip prefix when the bare name is free; otherwise properly archive+hide the 归档-* duplicate).

Where it sits

• plugins/tree/src/organize.js — move / archive / createLead / tidy (reorg primitives; archive today only sets the field, does not rename — confirm no rename path; harden + repair).
• plugins/tree/src/tree.js — adoption / ensureRoot (hook one-shot repair).
• plugins/tree/client.js + core sidebar structure — hide archived from the default Bot list (Tree self-organization follow-ups: memory handoff on merge, model-based clustering, chat notice #450 item 4, now in scope).
• Related: Tree: close create_bot maxChildren bypass; auto-prune/merge when over capacity or orphans exist #446 / Tree organizes itself by role: groups under leads, merge, daily tidy, undo #448 (self-org), Tree self-organization follow-ups: memory handoff on merge, model-based clustering, chat notice #450 (archived in sidebar deferred — pull hide into this fix).

Suggested direction

1. Keep grouping as reparent only (set parent); tests assert Bot names never change during a reorg run.
2. On archive: set archived and hide from the default sidebar (core hidden / structure include).
3. One-shot repair for names matching 归档- / Archive- prefixes.
4. Docs: tree.md Self-organization — move never rename+recreate; archived hidden from main list.

Owner decision (2026-10-19 22:23 Asia/Shanghai)

Reorg must reparent existing bots; never rename-old-to-归档- + create new; archived must not show in the main bot list; repair tonight's 归档-* bots.