Operator feedback iteration on the Ask-Claude input. Replaces the inline
comment-thread box (and the top-center QuickInput before it) with ONE input for
both scopes: a multi-line webview in a split pane below the document.
- New `editInstructionInput.ts` (`promptEditInstruction`): a tall, resizable
textarea + Send, opened via `newGroupBelow` so it sits under the document, not
over it. Auto-focused; ⌘↵/Ctrl↵ sends; Esc cancels. Cancel/Esc confirms ONLY
when there's text to lose (a webview can read its own textarea); closing the tab
is an explicit dismiss. On submit/cancel the split collapses AND focus is handed
back to the document, so the bottom panel (Output/Debug Console) no longer pops.
- Selection edits use the same box; the document above keeps the selection
highlighted (inactive-selection style) so the user sees what Claude will edit —
the selection is captured before the prompt, never touched.
- Removes the whole inline-comment mechanism: deletes `inlineAsk.ts`
(InlineAskController), the `cowriting.askClaude.submit`/`.cancel` commands, their
comment-thread menus, and the Escape keybinding — net deletion. One overridable
seam `TrackChangesPreviewController.askEditInstruction` (used by editSelection
and the preview), stubbed by the host E2E.
Sealed webview (INV-8/35): collects text only, no SDK/secret surface, no network.
242 unit + typecheck (src + e2e) + build green.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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