Polish: Tool added/removed lines every turn, Chief self-intro wording differs, friend's Bot offered as a Main Bot, gear hover inconsistent #276

Summary

Small polish items from the friend-DM self-test (aesthetics, simplicity, consistency).

Environment

• FlyBot main ab723ac (after fix(ui): + menu is a popover next to +; one Copy invite entry; 6 digits room hint (#173) #265), core + plugins/social + plugins/tree on @deepseek-ai/dsh@0.2.0-rc.2, Node 24.
• Two fresh installs on one Linux box: A :3090 (owner SelfA1220, @selfa1220.home) and B :3091 (owner SelfB1220, @selfb1220.home). Bot Social https://47-80-69-220.sslip.io.
• Both Chiefs on ark/deepseek-v4-flash (real model).
• A's Chief is shared with B through a per-Bot invite (grant grt_01M56M32HBPKTGVE0G51AM23C4, grantee @chief.selfb1220.home). B joined with its Chief as the talk-through Bot. B's Chief is not shared back (by design, Per-Bot grants leak: accepting a Helper invite exposes the joiner's Chief; face-room Chief shows in Friends' Bots; Manage access wrong/raw #138/Regression of #138: joining a friend's invite still puts the joiner's Chief on the inviter's main list #161).
• Scheduled product self-test, focus A (friend DM), browser run 2026-10-18 12:27–12:31 Asia/Shanghai. Screenshots stayed on the test machine; what they show is written out below.

Items

1. Tool added / Tool removed lines repeat every turn. Both chats get system lines like Tool added: create_child_bot · Tool added: list_children and then Tool removed: …, again and again. Expected: no tool-mask noise in a person's chat. Chat shows raw 'Tool removed: ask_user_question' cell (remainder of #140; DSH core cell) #140 already hid Tool removed: ask_user_question for the same reason.
   Hunch (code, not verified): hidePluginTools() (core/src/host/hooks.js L651–667) computes known from ctx.tools.schemas(agent). Once restrict({ deny }) has hidden the tree tools (visibleTo: inTree, plugins/tree/src/tools.js L48/61), they may no longer be in schemas, so the next resolve computes deny = [], drops the mask (Tool added), and the one after that denies again (Tool removed). That would flip on every delivery. ContextCell (core/src/client/cells.js L533) shows every tool change except ask_user_question.
2. The two Chiefs introduce themselves differently: A says "your Main Bot", B says "your Chief of Staff". The system prompt says ## You are the Main Bot (Chief of Staff) (core/src/host/prompt.js L26). Use one term (the UI says Main Bot).
3. Settings → Bots → "Add a Main Bot" offers "Chief" when Chief is already the only Main Bot. Hunch: on B, roster.bots also has the friend's Bot (SelfA1220's Chief, also named Chief), and MainBotsSection (core/src/client/settings.js L75 candidates, and L84 for the Main Bot select) does not filter out bot.remote. So a friend's Bot would be offered as a Main Bot under a bare name that looks like my own. The first-Main-Bot select (L84) lists roster.bots without that filter too.
4. Gear on hover is inconsistent. On A, hovering my own Chief row shows no gear. On B, a friend-Bot row shows a gear. Social UI polish round 3: truncation, duplicate Add friend/Accept invite, Manage access depth, wording (#166 follow-up) #173 says the gear should show on hover or focus for every row.

Expected

English-only, short, consistent wording. No repeated system noise. Only my own Bots can be picked as a Main Bot. The same hover affordance on every row.

Related: #140 (tool-removal cell), #173 (polish round 3).