The thread_context binding setting is removed. When the kind declares
the history ability and the bot is mentioned in a thread, the host
reads the thread once for a new chat, as before. The other guards stay:
the ability check, the bound, the untrusted block, and a failure never
blocks the answer.
A binding stored by an earlier build still loads. The JSON store
ignores the unknown field. The GORM row no longer maps the
thread_context_off column; AutoMigrate does not drop it and it accepts
NULL, so reads and writes keep working. No data is migrated or removed.
Assisted-by: Claude Code:claude-sonnet-5-5
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>