Chat round (explain on selection, page starters, reactions, streamed notes, thinking), negatives on node fixed values and combines, Pack builder quality fixes from 31 real-model eval rounds, and small-model support (scoped tools, checked tool arguments on local servers, two-phase steps, fixed prefix shown in Test connection).
adds wp_api/library_save.py with a single route handler that validates the
incoming payload via the module type's registered handler, persists it through
ModuleRepository.update, and returns {"ok": true, "new_hash": "<sha256>"}.
covered by 5 new async tests in tests/wp_api/test_library_save_endpoint.py.
also fixes pre-existing ruff E501 violations in test_derivation_handler.py
and test_instance_schema_parity.py that were blocking the pre-commit hook.
CombineHandler now calls resolve_text(template, build_resolve_ctx(ctx, surface="combine"))
replacing the manual $TOKEN_RE substitution loop. Unknown $vars emit "" (resolve_text
contract) rather than passing through unchanged; @{uuid} refs in combine surface are
lenient — emit empty string + ref_out_of_surface warning.
DerivationHandler wraps action.value through resolve_text with surface="derivation"
before applying the replace/append/prepend mode, enabling $var interpolation and
{a|b|c} picks inside action values.
ConstraintHandler is a pure metadata pass-through that records reweighting matrices
for future WildcardHandler consumption. It never processes user-authored text strings,
so no migration is required (no-op verdict).
Tests updated: combine tests drop ctx=None path and the pass-through unknown-var
assertion (both incompatible with resolve_text contract); derivation tests add
__wp_rng__ + __wp_warnings__ to all ctx fixtures; two new combine surface tests
added to tests/test_handlers.py per task spec.
Dumitru Picalau