The turn-error Definition suppressed its node permanently once the owning
turn carried any llm/retry event — a rule from the retired model where a
retry opened a new numbered turn. Retries now run inside the failing turn,
so the suppression hid exactly the exhausted terminal failure it existed
to defer to: spending every transient retry left the conversation with a
neutral collapsed retry row and no error row at all.
Delete the suppression: turn-error matches only turn/start and error-reason
turn/end, and renders whenever its turn recorded a terminal error; the
settled retry chain renders beside it through the separate model-retry
node. The Definition suite now asserts the exhausted-retry error node in
full history, tail-only windows, and after prepending the chain, and a new
keyless live e2e scenario exhausts a scenario-owned two-retry policy and
pins the terminal error row beside the settled retry row (the scaffold
gains replayRetryPolicy so exhaustion runs in milliseconds).
Both stale notes are corrected to the same-turn retry reality, and the new
bug-fix note owns the removal rationale.
A caret Backspace or Delete replaces no selection, so `beforeinput` reports
the bare caret and the previous derivation produced a negative inserted
length and fell back to the ambiguous scan. The delete half of the defect
survived, and the component test missed it by pre-expanding the selection to
the span the engines never report.
The range for a caret delete now comes from the direction `inputType` names
and the number of characters the draft actually lost, measured rather than
assumed to be one, so a grapheme, word, or line deletion sizes correctly.
Only the insert and delete families are recorded; a history replay reports
wherever the caret sits and would name a wrong span while passing every check.
Component tests cover the caret Backspace, Delete, and word-delete gestures,
and an assembled browser scenario drives them as real key presses, which is
the only place an engine's reported range is observable.
Ordinary typing supplied no edit range, so the machine recovered one by
scanning the two drafts for a common prefix and suffix. That reading is
ambiguous whenever the inserted text repeats what it lands against, and the
greedy scan always slides the edit as late as the characters allow. A
reference renders as '@' plus its label, so typing '@' immediately before one
reads as an insertion inside the reference; reconcile then applies its
intersect rule and drops the occurrence. Submission takes the occurrence-free
path and sends the human-facing label instead of the owner's model form, past
the serialization guard that only fires when an occurrence survives.
InputBar now records the textarea's selection during beforeinput and passes
the resulting range to setDraft, which the machine already prefers over its
own scan. A record that cannot describe the reported change yields no range
and the scan still runs.
The backdrop keyed each plain-text reference mark by its draft offset, so
any character typed ahead of a reference changed the key and made React
unmount the mark with its nested spans and inline glyph. Every keystroke
before a reference rebuilt every reference after the caret.
A scan derives these ranges fresh on every render, so a range carries no
identity past the render slot it occupies. The mark now keys by its index
in the offset-sorted textRefs list. Structured chips keep occurrenceId,
the identity their occurrence table owns.