Close analyze checkpointing workstream

docs/internal/manifest.md

@@ -119,6 +119,8 @@ the last committed collection before constructing the active failed record.
 Newly materialized canonical bytes therefore remain incidental and cannot
 become current authority. A later ordinary run reconciles the durable records,
 reuses earlier current artifacts, and resumes with the failed or stale work.
+The same recovery applies after process interruption: the aggregate record may
+be non-successful, but every completed artifact checkpoint remains reusable.
 
 ## Remote Commit Manifest
 
@@ -151,6 +153,10 @@ establish a current immutable snapshot.
 
 Manifest replacement provides atomic visibility, not a crash- or power-loss
 durability guarantee. Callers reload after a returned save error before retrying.
+An analyze checkpoint error leaves the prior manifest as per-artifact authority.
+The runner then attempts to persist the bounded failed/stale retry collection;
+if that terminal save also fails, its error is joined with the originating
+failure and the next invocation must reconcile from the last readable manifest.
 
 ## Execution Semantics