Fetch all outcome measurements recorded for an intent.

Accepts a pm_live_ Bearer key with read scope OR a session cookie. On the key path the query is scoped to the key's workspace as well as the intent, because RLS is bypassed there. Ordered by outcome_index ascending then measured_at descending, so the newest measurement for each outcome comes first within its group. Returns the full provenance of each row: provider, queryRef, queryVersion, window, evaluatedAt, expectation, rawResponse, numericValue, and metBasis ('computed' when Pathmode evaluated the expectation itself, 'self_report' when the caller asserted the verdict, null when there is no verdict). Legacy rows predate provenance and read back with those fields null.