claude@clouddev1
0b15ce0306
The typing-surface matrix exposed two bugs the existing 859-test suite missed: walk_repeated: when the separator consumed but the inner item failed at EOF, the old path rolled the separator back and reported a definite error at the rollback position (`insert into T (a, ` flashed red on the `,` after each comma). Now propagates Incomplete with the inner's expected set so the input renderer treats it as mid-typing. build_insert Form C path: `insert into T (col)` walked to a complete match but produced `values: []` because Form C's value collector drops ident-shaped items. The user almost certainly meant Form A and just hasn't typed `values (...)` yet. Reject with a ValidationError naming the Form-A continuation; classify_input now reports IncompleteAtEof. completion_probe / expected_at_input: ValidationFailed used to return an empty expected set, leaving Tab with nothing to offer at the new Form-A flag point. Now surface result.tail_expected (skipped-Optional expectations captured before validation fired) so `values` is still offered as a candidate.