Integrate partial processing outcomes and fatal cancellation

docs/roadmap/implementation.md

@@ -552,6 +552,16 @@ not rely on report tables to maintain chunk state.
 
 ## Stage 6 — Integrate Partial Outcomes and Fatal Cancellation
 
+**Completed 2026-09-24.** The runner now preserves per-section operation facts,
+continues after recoverable model failures, applies only candidates approved by
+every required validator, and retains completed observations on fatal cancellation.
+It tracks explicit work-unit states and merges defective-proposal filtering with
+an existing proposal recovery. Runner tests cover total proposal failure, mixed
+validation outcomes, later modules, multiple failures in one unit, merged recovery,
+and fatal cancellation. `go test -race ./internal/framework/runner
+./internal/framework/llm` and `git diff --check` passed. Integrated reporting
+checks remain deferred until the reporting stages.
+
 **Work:** Update `collectSectionProposals`, `runModulePipeline`, and
 `validateSectionCandidates` to consume the outcomes from Stages 3–4. Recoverable
 failures never enter shared fatal cancellation. Preserve candidates through every