chore(sdk): drop stale comment in RunContext.to_attributes

Pre-existing working-tree change. Removes a 4-line explanatory
comment about why ``botanu.outcome.status`` is not emitted (the
customer-trust-hole note). Behavior unchanged — the SDK still
does not emit ``botanu.outcome.status``. The rationale lives in
project memory + the value-engine / cost-engine design docs.

Signed-off-by: Deborah Jacob <deborah@botanu.ai>

Author: deborahjacob-botanu

src/botanu/models/run_context.py

@@ -279,10 +279,6 @@ def to_span_attributes(self) -> Dict[str, Union[str, float, int, bool]]:
             if self.cancelled_at:
                 attrs["botanu.run.cancelled_at"] = self.cancelled_at
         if self.outcome:
-            # `botanu.outcome.status` is NOT emitted (removed 2026-04-16):
-            # customer-reported outcome is trivially fakeable. Event outcome
-            # is derived from eval verdict rollup / HITL / SoR instead.
-            # Remaining fields are diagnostic only and stay for debugging.
             if self.outcome.reason_code:
                 attrs["botanu.outcome.reason_code"] = self.outcome.reason_code
             if self.outcome.error_class: