The four findings from the review of the 3.15-3.18 batch:
- The event step's `_eventFieldsError` flag is cleared at the start of each
collect: fixing malformed JSON used to leave the save refused until the
editor was closed and reopened. Regression test covers invalid -> fixed.
- The script store keeps an entry that no longer validates on load (a
tightened engine rule or a hand edit): it is served, fails at run start with
the validator's message and can be fixed in the editor, instead of being
dropped from memory and erased by the next save. Mutation paths still
refuse it. (The presets store already had this behaviour.)
- Writebacks are serialized per script (`_testWriteChains`): two quick saves
of an unsaved draft no longer create two server-side scripts - the window
could be minutes while a RAM operation holds the card lock. Regression
test asserts one create + one update.
- Deleting a script cancels its pending debounced save and marks it deleted,
so a queued writeback never resurrects it; a create already in flight is
undone with a delete. Regression test covers the pending-save case.
- The event vectors moved to a shared fixture
(frontend/tests/event_vectors.json) asserted by BOTH suites - a one-sided
builder change now fails the other suite instead of drifting silently.
Tests: 816 frontend + 716 Python; sw cache simple-v383.
catarrh
152878062f
