A programmatic setDraft commit resets the controlled textarea's caret
(observed landing at the start of the value), so every later insert probed
the reset position and the stack drifted (A|B + C + D became |DACB).
placeComposerCaretAfterInsert puts the caret right after the inserted text
once the value commit lands - the index accounts for the left-side
separating space - and is guarded by a value-sync check plus a two-frame
retry, so a newer edit or a different composer wins untouched.
spliceInsert now reports the caret index together with the spliced draft
so the placement math cannot drift from the join logic. Nothing else moves:
the pure insertAtCaret surface is unchanged.
appendToDraft always spliced at the end of the draft. The conversation
service exposes no caret API, so probe the live composer textarea selection
from the DOM (value-sync guarded) and splice at that position with
whitespace-aware joins; an unknown or stale caret falls back to appending.
The explorer @-reference shares this path, so it inserts at the caret too.
The portaled position:fixed add-to-conversation button stays pinned to its
viewport anchor while the sidebar keeps every tab mounted (tab switches only
set display:none; collapsing the panel translates it off-screen), so the
popup could outlive its editor surface. Extract the popup into
useSelectionPopup and close it on any mousedown outside the button, Escape,
document hidden, window blur, and - the tab-switch/collapse path - when an
IntersectionObserver reports the editor surface off-viewport.
Adds eg-bole/dsh-better-sidebar-icons (VSCode-style file/folder icon
theme, DOM overlay, npm-published 0.1.2) to the '增强与工具' plugin
list in the README.
懿驹-伯乐