Release v7.115.0

The corpus now teaches what Chronicle 19.110.1 ships. Stage, Scene and Studio follow separately.

Changed

• Chronicle client guidance covers append outcomes when the result is uncertain, keyed retries, completion ownership and the partition delivery settings, each with the minimum version it needs (part of #820)
• Constraint and decision-read guidance explains how Chronicle repairs or refuses after an index failure, replacing the old claim that a failed index permits duplicates (part of #820)
• Reactor and reducer guidance covers concurrent partition delivery, receipts for returned events and replay sink promotion (part of #820)
• Projection and read-model guidance covers full-history evolution, root-removal warnings, MongoDB window and parent-history repair, and SQL, composite, descending, nested-path and PostgreSQL GIN indexes with their kernel and client floors (part of #820)
• Read-model specification guidance covers real appended event contexts and folds over seeded state (part of #820)
• Hosting guidance covers SQL membership and schema actions, the Localhost single-writer lease (MongoDB 5.0 or later), separate liveness and readiness routes, Azure managed identity, the abandoned-delivery hold and webhook validation, retry and quarantine probes (part of #820)
• Compliance guidance covers the Azure Key Vault purge requirements (part of #820)