diff --git a/docs/roadmap/implementation.md b/docs/roadmap/implementation.md
index f2a10786..fc907a70 100644
--- a/docs/roadmap/implementation.md
+++ b/docs/roadmap/implementation.md
@@ -296,6 +296,8 @@ absolute reference fixtures until Stage 7 supplies relative path resolution.
 
 ## Stage 5 — Support ConfigKit Dynamic Integers In Modules
 
+**Status:** Completed 2026-09-13.
+
 **Goal:** Ensure the module boundary accepts valid ConfigKit options.
 
 **Work:**
diff --git a/internal/core/config/loaded_config_test.go b/internal/core/config/loaded_config_test.go
index 67b74d1c..96458fc7 100644
--- a/internal/core/config/loaded_config_test.go
+++ b/internal/core/config/loaded_config_test.go
@@ -7,6 +7,8 @@ import (
 
 	configkit "gitea.maximumdirect.net/eric/ConfigKit"
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/pipeline"
+	units "gitea.maximumdirect.net/eric/notarius/internal/modules/generic/chunk/units"
+	jsonoutput "gitea.maximumdirect.net/eric/notarius/internal/modules/generic/output/json"
 )
 
 func TestLoadedConfigConvertsDocumentsAndResolvesRuntimePipeline(t *testing.T) {
@@ -91,6 +93,40 @@ pipelines:
 	}
 }
 
+func TestLoadedConfigPreservesConfigKitIntegerOptionsForModules(t *testing.T) {
+	t.Parallel()
+
+	loaded, err := loadConfigSource(configkit.Bytes("document.yml", []byte(`version: 5
+pipelines:
+  session:
+    input: {module: input}
+    chunk:
+      module: generic
+      options:
+        max_units: 3
+        overlap_units: 1
+    output:
+      module: json
+      options:
+        evidence_context:
+          enabled: true
+          lanes: [score]
+          window_units: 2
+`)), LoadOptions{})
+	if err != nil {
+		t.Fatalf("loadConfigSource() error = %v", err)
+	}
+	profile := loaded.Config.Pipelines["session"]
+	chunkOptions, err := units.DecodeOptions(profile.Chunk.Options)
+	if err != nil || chunkOptions.MaxUnits != 3 || chunkOptions.OverlapUnits != 1 {
+		t.Fatalf("chunk options = %#v, %v", chunkOptions, err)
+	}
+	outputOptions, err := jsonoutput.DecodeOptions(profile.Output.Options)
+	if err != nil || !outputOptions.EvidenceContext.Enabled || outputOptions.EvidenceContext.WindowUnits != 2 {
+		t.Fatalf("output options = %#v, %v", outputOptions, err)
+	}
+}
+
 func pipelineProfileWithChangedOption(profile pipeline.PipelineProfile) pipeline.PipelineProfile {
 	profile = clonePipelineProfile(profile)
 	nested := profile.Artifacts["score"].Extract.Options["nested"].(map[string]any)
diff --git a/internal/framework/pipeline/construction.go b/internal/framework/pipeline/construction.go
index c4e3b9a5..66aee8f3 100644
--- a/internal/framework/pipeline/construction.go
+++ b/internal/framework/pipeline/construction.go
@@ -69,3 +69,22 @@ func RejectUnknownOptions(options map[string]any, allowed ...string) error {
 	}
 	return fmt.Errorf("unknown options %q", unknown)
 }
+
+// IntOption accepts the two integer representations admitted at the module
+// boundary: native int values from programmatic bindings and int64 values from
+// ConfigKit dynamic option maps. Callers remain responsible for their own
+// domain constraints.
+func IntOption(value any) (int, bool) {
+	switch typed := value.(type) {
+	case int:
+		return typed, true
+	case int64:
+		converted := int(typed)
+		if int64(converted) != typed {
+			return 0, false
+		}
+		return converted, true
+	default:
+		return 0, false
+	}
+}
diff --git a/internal/modules/generic/chunk/units/chunker.go b/internal/modules/generic/chunk/units/chunker.go
index 1c59080c..b51c759d 100644
--- a/internal/modules/generic/chunk/units/chunker.go
+++ b/internal/modules/generic/chunk/units/chunker.go
@@ -155,7 +155,7 @@ func nonNegativeIntOption(name string, value any) (int, error) {
 }
 
 func intOption(name string, value any) (int, error) {
-	got, ok := value.(int)
+	got, ok := pipeline.IntOption(value)
 	if !ok {
 		return 0, chunkerErrorf("%s must be an integer", name)
 	}
diff --git a/internal/modules/generic/chunk/units/chunker_test.go b/internal/modules/generic/chunk/units/chunker_test.go
index 8e1aaf19..88ff2987 100644
--- a/internal/modules/generic/chunk/units/chunker_test.go
+++ b/internal/modules/generic/chunk/units/chunker_test.go
@@ -121,9 +121,19 @@ func TestPlanRejectsInvalidOptions(t *testing.T) {
 	}
 }
 
-func TestDecodeOptionsRejectsNonNativeIntegers(t *testing.T) {
+func TestDecodeOptionsAcceptsConfigKitIntegers(t *testing.T) {
+	options, err := DecodeOptions(map[string]any{"max_units": int64(2), "overlap_units": int64(1)})
+	if err != nil {
+		t.Fatalf("DecodeOptions() error = %v", err)
+	}
+	if options.MaxUnits != 2 || options.OverlapUnits != 1 {
+		t.Fatalf("DecodeOptions() = %#v", options)
+	}
+}
+
+func TestDecodeOptionsRejectsUnsupportedIntegerRepresentations(t *testing.T) {
 	for _, value := range []any{
-		int8(2), int16(2), int32(2), int64(2),
+		int8(2), int16(2), int32(2),
 		uint(2), uint8(2), uint16(2), uint32(2), uint64(2),
 		float32(2), float64(2), json.Number("2"),
 	} {
diff --git a/internal/modules/generic/output/json/encoder.go b/internal/modules/generic/output/json/encoder.go
index 20ff9079..02d26e6b 100644
--- a/internal/modules/generic/output/json/encoder.go
+++ b/internal/modules/generic/output/json/encoder.go
@@ -182,7 +182,7 @@ func decodeEvidenceContextPolicy(value any) (pipeline.EvidenceContextPolicy, err
 	}
 	windowUnits := 3
 	if rawWindow, ok := object["window_units"]; ok {
-		value, ok := rawWindow.(int)
+		value, ok := pipeline.IntOption(rawWindow)
 		if !ok {
 			return pipeline.EvidenceContextPolicy{}, encoderErrorf("evidence_context option %q must be an integer", "window_units")
 		}
diff --git a/internal/modules/generic/output/json/encoder_test.go b/internal/modules/generic/output/json/encoder_test.go
index e4823c86..a4f9615a 100644
--- a/internal/modules/generic/output/json/encoder_test.go
+++ b/internal/modules/generic/output/json/encoder_test.go
@@ -87,6 +87,7 @@ func TestDecodeEvidenceContextOptions(t *testing.T) {
 		{name: "disabled", options: map[string]any{"evidence_context": map[string]any{"enabled": false}}},
 		{name: "enabled default window", options: map[string]any{"evidence_context": map[string]any{"enabled": true, "lanes": []any{"npcs"}}}, want: pipeline.EvidenceContextPolicy{Enabled: true, WindowUnits: 3, LaneIDs: []string{"npcs"}}},
 		{name: "explicit zero window and normalized lanes", options: map[string]any{"evidence_context": map[string]any{"enabled": true, "lanes": []any{" spells ", "npcs"}, "window_units": 0}}, want: pipeline.EvidenceContextPolicy{Enabled: true, WindowUnits: 0, LaneIDs: []string{"npcs", "spells"}}},
+		{name: "ConfigKit window integer", options: map[string]any{"evidence_context": map[string]any{"enabled": true, "lanes": []any{"npcs"}, "window_units": int64(2)}}, want: pipeline.EvidenceContextPolicy{Enabled: true, WindowUnits: 2, LaneIDs: []string{"npcs"}}},
 		{name: "duplicate lanes", options: map[string]any{"evidence_context": map[string]any{"enabled": true, "lanes": []any{"npcs", " npcs "}}}, wantErr: "duplicated"},
 		{name: "unknown nested option", options: map[string]any{"evidence_context": map[string]any{"enabled": false, "extra": true}}, wantErr: "unknown option"},
 		{name: "disabled nested fields", options: map[string]any{"evidence_context": map[string]any{"enabled": false, "lanes": []any{"npcs"}}}, wantErr: "not allowed"},