Preserve canonical distinct-source and unique-native-observation refinements after resolving inline or retained JavaScript workflow inputs. The shared application entry points now return structured invalid_request errors before graph parsing and computation, avoiding another complete graph capture.
Six focused tests, actual compiled CLI/SDK stdio workflows, JSON Schema dialect checks, static/document checks, and a real Notion ASAR analysis/recovery/trace/close workflow passed. All 20 final-head checks, including real JavaScript recovery, passed. Native-provider acceptance is not claimed for this provider-neutral validation change.
Fixes#1364
Refs #1065
morluto