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
 

docs/internal/stage-analyze.md

@@ -104,6 +104,10 @@ Supported source families:
   prerequisites remain available through the runtime catalog without invoking
   Scriptorium; newly produced prerequisites enter that catalog with the same
   contract, checksum, and size identity used for persisted current evidence.
+- before the first adapter call, checkpoints the reconciled starting collection
+  when it removed configuration records or cleared obsolete authority. After
+  each successful artifact, checkpoints the complete collection before making
+  that artifact available to the next scheduled dependent.
 - keeps adapter output in the invocation's run-local analyze directory until
   it is a safe, non-empty, bounded regular file with a calculated checksum and
   complete output contract. Canonical replacement uses the shared atomic file
@@ -146,6 +150,10 @@ Supported source families:
 - unrelated current records survive a partial failure. Old canonical bytes for
   the failed artifact and newly materialized bytes whose checkpoint fails are
   incidental, not current evidence.
+- a checkpoint failure stops the queue immediately. The in-memory retry
+  collection starts from the last successful checkpoint, marks the active
+  artifact failed without output authority, and stales its current transitive
+  dependents.
 - the runner's ordinary error path marks aggregate analyze failed, clears its
   aggregate outputs, invalidates publish and notify through the application
   dependency relation, and persists the live retry collection. Terminal-save
@@ -164,6 +172,9 @@ Supported source families:
 - output provenance and metadata are deterministic per execution.
 - a canonical file without current per-artifact manifest evidence is never
   promoted to current state.
+- an ordinary retry after interruption or partial failure reuses every valid
+  earlier checkpoint and schedules only failed, stale, missing, or otherwise
+  non-current work in dependency order.
 
 ## Related Contracts And Tests
 

docs/operations.md

@@ -210,6 +210,12 @@ analysis evidence, regenerate the affected target instead of copying an older
 canonical file into place or editing the manifest. See
 [Troubleshooting: Analysis artifact evidence is not current](./troubleshooting.md#analysis-artifact-evidence-is-not-current).
 
+Analyze checkpoints each completed configured artifact before starting later
+artifact work. After a partial failure or interruption, retry normally: valid
+earlier checkpoints are reused and execution resumes with failed, stale, or
+missing work in dependency order. `--force` is unnecessary unless the operator
+intends to replace otherwise-current artifacts.
+
 ## Artifact Selection
 
 For a configured artifact family, selecting its family key expands to every

docs/roadmap/implementation.md

@@ -383,7 +383,7 @@ validation, application, and rollback paths.
 
 ## Stage 5 — Verify Force Semantics, Align Documentation, And Close Workstream 6
 
-**Status:** Pending
+**Status:** Completed
 
 ### Goal
 

docs/roadmap/refactoring.md

@@ -264,7 +264,7 @@ do not require process-global substitution.
 
 ### Workstream 6 — Per-artifact analyze checkpointing and recovery
 
-**Status:** Pending
+**Status:** Complete
 
 **Audit sources:** H04, H14, H15, H36, H37, C02, and C03.
 

docs/troubleshooting.md

@@ -428,6 +428,34 @@ narratio analyze 2026-04-04 --artifacts session_recap
 Relevant references: [Operations: Artifact Selection](./operations.md#artifact-selection)
 and [Artifact Internals](./internal/artifacts.md#resolution-rules).
 
+## Analysis manifest checkpoint failed
+
+Symptom:
+
+- analyze reports that it could not save the session manifest after completing
+  an artifact.
+
+Likely causes:
+
+- the workspace is unwritable or out of space;
+- the manifest path or its parent directory has unsafe permissions or type; or
+- a transient local filesystem error interrupted atomic manifest replacement.
+
+Safe fix:
+
+- correct the reported filesystem or permission problem;
+- inspect `session artifacts` to identify the last durable current records; and
+- rerun analyze normally. Narratio reuses earlier successful checkpoints and
+  retries the failed or non-current artifact and its required dependents.
+
+Do not treat a newly created canonical artifact file as current when its
+checkpoint failed, and do not edit the manifest to advertise it. If the error
+recurs, preserve the manifest and run-local diagnostics before repairing the
+workspace.
+
+Relevant references: [Operations: Stage Execution and Continuation Behavior](./operations.md#stage-execution-and-continuation-behavior)
+and [Manifest Internals](./internal/manifest.md#persistence-semantics).
+
 ## Built-in transcript or bounds source is unavailable
 
 Symptom:

internal/stage/analyze_plan_test.go

@@ -62,6 +62,30 @@ func TestPlanAnalyzeWorkSelectionAndDependencyClosure(t *testing.T) {
 			},
 			wantTargets: []string{"alpha", "zeta"}, wantExecution: []string{"alpha", "zeta"},
 		},
+		{
+			name: "ordinary default selection reuses every current artifact",
+			configured: map[string]config.ScriptoriumArtifactConfig{
+				"alpha": {Enabled: true}, "zeta": {Enabled: true}, "disabled": {Enabled: false},
+			},
+			reasons: map[string]analyzeReconciliationReason{
+				"alpha": analyzeReconciliationCurrent, "zeta": analyzeReconciliationCurrent,
+				"disabled": analyzeReconciliationCurrent,
+			},
+			wantTargets: []string{"alpha", "zeta"}, wantReused: []string{"alpha", "zeta"},
+		},
+		{
+			name: "unqualified force reruns every enabled artifact",
+			configured: map[string]config.ScriptoriumArtifactConfig{
+				"alpha": {Enabled: true}, "zeta": {Enabled: true}, "disabled": {Enabled: false},
+			},
+			force: true,
+			reasons: map[string]analyzeReconciliationReason{
+				"alpha": analyzeReconciliationCurrent, "zeta": analyzeReconciliationCurrent,
+				"disabled": analyzeReconciliationCurrent,
+			},
+			wantTargets: []string{"alpha", "zeta"}, wantExecution: []string{"alpha", "zeta"},
+			wantForced: []string{"alpha", "zeta"},
+		},
 		{
 			name: "partial selection closes over nested dependencies",
 			configured: map[string]config.ScriptoriumArtifactConfig{