Finding 1: the empty-anchor optimistic residual was never GPU-only
(the TUI mirror tracks no selection state; its gate checks cursor
freshness/EOL only). The fix moves daemon-side: handle_remote_crdt_op
clears a selection whose anchor equals the pre-edit cursor (= empty)
before applying the source cursor update; nonempty selections stand.
Covers both frontends. The TUI gate's missing type-over check
(nonempty selection at EOL) is a named deferral.
Finding 2: Q#AI8 invalidation is one helper
(search_invalidate_for_edit) invoked from all four edit paths --
apply_active_edit, notify_buffer_edit, and now undo/redo, which
received precise Edits but invalidated nothing. rebuild_views_for is
named as a lower-frequency bypass (deferral).
Finding 3: acceptance matrix trued up -- added active-search
fail-closed + retype recovery, delete translation on both paths,
undo/redo staleness + origin tests; modal contexts narrowed to what
this suite pins (query-replace/menu/completion ride their own
suites).
Finding 4: indent extraction is a forward-chunked scan stopping at
the first non-whitespace byte -- Enter at the end of a giant
minified line no longer materializes the line. Functional pin at
64 KiB.
Both medium fixes are bite-verified (tests fail with the fix
disabled).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ATiKMwJ4864d82D39EvsU6
Levi Neuwirth