Commit the full decision record into the chain, not only the request

[President]

A ContextEntry commits only the request (request_hash, step_type, provenance_summary, timestamp).
Not the disposition, the rule(s) that fired, or the inputs it relied on (counters, classifier/model outputs).
So a Guardian can rewrite what it decided, and why, without breaking its own chain.

Suggest:

• each entry also commits a hash of the full decision record: request, disposition, reasons, inputs used, response.
  Whether the Guardian stores the record itself stays its choice/config; the hash is always in the chain.