The popup offered [[feature]]/[[milestone]] on every fresh line — right
under the last property or straight after a header. Only volunteer them
once there's a blank line above (the "two new lines" convention); typing
a bare `[` still summons them anywhere. Property keys are unchanged.
The pattern's trailing optional quote let a complete `status = "x"`
match, so the popup reopened after the closing quote. Drop it so the
match ends with the value, while still typing remains supported.
Slicing the UTC ISO string showed the wrong calendar day near
midnight for non-UTC authors. Build it from local getFullYear/
getMonth/getDate so it matches the day the author actually sees.
The TOML editor offered nothing when typing a date, leaving the
yyyy-mm-dd format undiscoverable until a parse error. Suggest today
(a full, easy-to-edit date) and the current-year prefix on empty
date values and fresh reestimates elements, backing off once a date
is being typed.
Given a source and caret offset, suggest block headers, the keys valid
for the current block (excluding ones already written), status enum
values, and the feature names referenced by a milestone's requires.
Mirrors the schema in parse.ts.
