Merge branch 'codex/canonical-tool-output' into codex/code-mode-typed-results

# Conflicts:
#	docs/config-catalog.md
#	docs/cookbook/adding-a-tool.i18n.yaml
#	docs/cookbook/adding-a-tool.md
#	docs/cookbook/adding-a-tool.zh.md
#	docs/cordis-catalog/events.md
#	docs/cordis-catalog/services.md
#	docs/event-producer-consumer.md
#	packages/core/tools/tests/code-mode.spec.ts

packages/core/tools/src/code-mode.ts

@@ -169,9 +169,8 @@ export function createRunCodeTool(registry: ToolRegistry, requireRuntime: () =>
       // (its executor kills on this signal) instead of orphaned, and
       // queued-unstarted dispatches are abandoned.
       const runController = new AbortController()
-      const onOuterAbort = (): void => { runController.abort(exec.signal?.reason) }
-      if (exec.signal?.aborted) onOuterAbort()
-      exec.signal?.addEventListener('abort', onOuterAbort, { once: true })
+      const onOuterAbort = (): void => { runController.abort(exec.signal.reason) }
+      exec.signal.addEventListener('abort', onOuterAbort, { once: true })
 
       let dispatches = 0
       // The per-run serialization queue: every binding call chains onto the tail, so even
@@ -281,7 +280,7 @@ export function createRunCodeTool(registry: ToolRegistry, requireRuntime: () =>
           ...result.value !== undefined ? { result: result.value } : {},
         }
       } finally {
-        exec.signal?.removeEventListener('abort', onOuterAbort)
+        exec.signal.removeEventListener('abort', onOuterAbort)
       }
     },
     // ACP execute cards use the program as their visible title.