TestContractPin_CollectionsJSON tripped on the additive keys the
episode-collections work introduced — the tripwire worked exactly as
designed (additive keys must be whitelisted here AND in
docs/contract_pins.md first).
- Collections envelope gains rule_match_mode (item 2.4): the
smart-collection match semantics on GET /api/collections/:id.
- BookInfo gains four STABLE keys (item 2.3): is_episode,
feed_title, download_state, hidden — dropped omitempty so every
card surface emits the same key set (the viewer_percentage
precedent; adapters that predate episode awareness emit zero
values).
docs/contract_pins.md changelog entry written. Nothing removed,
nothing renamed.
John O'Keefe
bc91ce68d4