Five majors + four minors from the second review, all fixed:
R2-1 (head line on indentation grammars): tree-sitter-python's block
starts on the first statement line, so the old heuristic made a body line
the fold head and left def foo(): headless. Added a head-selection ascend
rule (block-like node -> ascend to the introducer parent while
parent.start_line < block.start_line), a no-op for brace languages.
Acceptance 1 now tests both Rust and Python.
R2-2 (Q#FD5 cannot live in the View): View::on_edit(&Buffer,&Edit) and
Edit carry no source frontend and no point-inside signal (only crdt_op),
verified at overlay.rs:248 / rope.rs. The store View now does translate +
drop only; the interactive unfold is a pre-edit step at the dispatch layer
that holds the authenticated frontend and its point.
R2-3 (CRDT typing misclassified): the classifier is the authenticated
source frontend's point, not the transport — a GPU user's CRDT-op insert
inside a fold is interactive. Stage 1 implements the command path;
CRDT-origin unfold is a named Stage 3 obligation.
R2-4 (#120 stale-mirror trap): revert drops the store + emits
BufferSnapshot + resets the baseline, so the empty store is suppressed as
'initial empty' and the GPU keeps stale folds unless its snapshot arm
clears the fold mirror. Pinned as a Stage 3 obligation and in acceptance 7.
R2-5 (line-aligned tail hid non-member text): } else { / }, [deps]) —
now the closing-delimiter line stays visible (closer-aware tail);
delimiter-less nodes still hide through the last body line. Decided, not
bet.
Minors: unfold is plural (nested); shared head lines toggle
innermost-first; Q#FD9's reason corrected to the >=1-hidden-line rule (not
bounds); and the Stage 2/3 sketch now names fold-aware LineNumbers,
visible-line viewport/scroll accounting, and hidden-line sign/presence
clamp-or-drop.
Levi Neuwirth
9d08c663d4