From 582bc929f638161b62ad9e89b32fb89d41488cae Mon Sep 17 00:00:00 2001
From: ScriptedAlchemy <zackary.l.jackson@gmail.com>
Date: Fri, 18 Sep 2026 11:42:09 +0000
Subject: [PATCH] fix(host-admission): classify typed session projection
 collisions

The SessionOutputCollision variant added in #1778 was not handled by the host admission boundary, so the production composition stopped compiling. Map it to a distinct non-retryable degraded outcome instead of collapsing it into message-output collision.
---
 crates/tracedecay-host-admission/src/lib.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/crates/tracedecay-host-admission/src/lib.rs b/crates/tracedecay-host-admission/src/lib.rs
index fa8e690ff7..bee8a4d8f9 100644
--- a/crates/tracedecay-host-admission/src/lib.rs
+++ b/crates/tracedecay-host-admission/src/lib.rs
@@ -905,6 +905,9 @@ const fn projection_error_outcome(error: &ProjectionStoreError) -> HostAdmission
         ProjectionStoreError::OutputCollision { .. } => {
             HostAdmissionOutcome::degraded("projection_output_collision")
         }
+        ProjectionStoreError::SessionOutputCollision { .. } => {
+            HostAdmissionOutcome::degraded("projection_session_collision")
+        }
         ProjectionStoreError::Contract(_) => {
             HostAdmissionOutcome::degraded("projection_contract_rejected")
         }