Two knowledge false-positive guards addressing bug 642303 (agent FPs on BCApps PR #9607):
- breaking-changes: relocating a field to a tableextension in the same app under the same field ID/name is a relocation, not a deletion/rename; the field still resolves on the table, so it must not be flagged as a deleted shipped field or require ObsoleteState staging. Scoped to the contract axis; silent on data migration.
- events: adding a parameter to an event publisher does not break existing subscribers (subscribers bind by name and match a subset), so the addition itself must not be reported as a breaking signature change.
