Coordinate aggregate PromptKit smoke tests

docs/roadmap/implementation.md

@@ -1,6 +1,6 @@
 # Dependency upgrades, discovery, and smoke testing implementation plan
 
-Status: Stages 1–11 complete; Stage 12 is next.
+Status: Stages 1–12 complete; Stage 13 is next.
 
 ## Authority and baseline
 
@@ -624,6 +624,16 @@ stopping, ordered output, and joined error identity. Run focused aggregate tests
 **Complete when:** `promptkit test all` provides the agreed coordination through
 the same concrete-operation callback as individual tests.
 
+**Completed:** 2026-10-17. `all` now runs reachability, authentication, text
+inference, and structured output sequentially in one invocation, with one input
+check and shared state. Each callback receives a concrete kind and a fresh
+execution override with copied optional pointers. Reports and per-kind errors
+remain ordered; ordinary errors do not stop later tests, while cancellation
+stops scheduling and retains earlier results plus joined error identity.
+Aggregate tests verify shared lifetimes, seed isolation, continuation,
+projection order, and partial cancellation. Focused smoke/report tests and
+`GOTOOLCHAIN=local go build ./...` passed in ckprompt.
+
 ## Stage 13: Verify smoke bindings and invocation lifetimes
 
 **Primary files:** focused smoke command/adapter tests, reusing existing writer