Merge remote-tracking branch 'origin/master' into codex/model-experience-readmes-20260712

# Conflicts:
#	package.json
#	packages/code-runtime/code-runtime-worker/README.md
#	packages/workflow/tool-workflow/README.md

packages/core/system-prompt/src/index.ts

@@ -103,6 +103,8 @@ export interface PromptSection {
 export interface AssembledSection {
   /** The contributing section's unique name. */
   name: string
+  // TODO(assembled-section-order): drop this output field; registry order has
+  // already sorted the array, and no production renderer/listener reads it.
   /** The contributing section's order (sections arrive sorted ascending). */
   order: number
   /** The resolved (but not yet interpolated) section text. */