diff --git a/contracts/cognitive/context_compiler.go b/contracts/cognitive/context_compiler.go
index 6b4d27e..fd874b9 100644
--- a/contracts/cognitive/context_compiler.go
+++ b/contracts/cognitive/context_compiler.go
@@ -11,14 +11,24 @@ import (
 var ErrInvalidContextBudget = errors.New("context budget must be positive")
 
 type ContextCandidate struct {
-	Excerpt   ContextExcerpt
-	Relevance int
+	Excerpt         ContextExcerpt
+	Relevance       int
+	Lane            string
+	ContextScopeRef string
+	FreshnessState  string
+	Negative        bool
 }
 
 type ContextCompileInput struct {
-	Candidates []ContextCandidate
-	DataPolicy capability.DataPolicy
-	MaxBytes   int
+	Candidates           []ContextCandidate
+	DataPolicy           capability.DataPolicy
+	MaxBytes             int
+	TaskRef              string
+	FocusFrameRef        string
+	ContextScopeRef      string
+	FreshnessRequirement string
+	RiskClass            string
+	TokenBudget          int
 }
 
 type ContextOmission struct {
@@ -30,6 +40,24 @@ type ContextBundle struct {
 	Excerpts  []ContextExcerpt
 	Omissions []ContextOmission
 	Bytes     int
+	Trace     ContextAssemblyTrace
+}
+
+type ContextAssemblyTrace struct {
+	Included        []ContextExcerptID
+	Excluded        []ContextOmission
+	Coverage        string
+	CompilerVersion string
+}
+
+type IterativeRetrievalRequest struct {
+	Query          string
+	RemainingBytes int
+	Pass           int
+}
+type IterativeRetrievalResponse struct {
+	Candidates []ContextCandidate
+	Exhausted  bool
 }
 
 // CompileContext deterministically selects permitted, relevant excerpts for a
@@ -54,6 +82,10 @@ func CompileContext(input ContextCompileInput) (ContextBundle, error) {
 			continue
 		}
 		seen[excerpt.ID] = struct{}{}
+		if input.ContextScopeRef != "" && candidate.ContextScopeRef != input.ContextScopeRef {
+			bundle.Omissions = append(bundle.Omissions, ContextOmission{ID: excerpt.ID, Reason: "context_scope"})
+			continue
+		}
 		reason := permittedContextReason(excerpt, input.DataPolicy)
 		if reason != "" {
 			bundle.Omissions = append(bundle.Omissions, ContextOmission{ID: excerpt.ID, Reason: reason})
@@ -70,7 +102,11 @@ func CompileContext(input ContextCompileInput) (ContextBundle, error) {
 		}
 		bundle.Excerpts = append(bundle.Excerpts, excerpt)
 		bundle.Bytes += bytes
+		bundle.Trace.Included = append(bundle.Trace.Included, excerpt.ID)
 	}
+	bundle.Trace.Excluded = append([]ContextOmission(nil), bundle.Omissions...)
+	bundle.Trace.CompilerVersion = "context-compiler-v2-additive"
+	bundle.Trace.Coverage = "BOUNDED"
 	return bundle, nil
 }
 
diff --git a/contracts/cognitive/context_compiler_v2_test.go b/contracts/cognitive/context_compiler_v2_test.go
new file mode 100644
index 0000000..8e576af
--- /dev/null
+++ b/contracts/cognitive/context_compiler_v2_test.go
@@ -0,0 +1,14 @@
+package cognitive_test
+
+import (
+	"git.cin.su/m/Assistant/contracts/capability"
+	"git.cin.su/m/Assistant/contracts/cognitive"
+	"testing"
+)
+
+func TestContextCompilerV2TraceAndBudgetRemainDeterministic(t *testing.T) {
+	b, err := cognitive.CompileContext(cognitive.ContextCompileInput{MaxBytes: 5, DataPolicy: capability.DataPolicyLocalOnly, TaskRef: "task", FocusFrameRef: "frame", ContextScopeRef: "company-a", Candidates: []cognitive.ContextCandidate{{Excerpt: cognitive.ContextExcerpt{ID: "a", Text: "123", Sensitivity: cognitive.SensitivityPrivateAllowed}, ContextScopeRef: "company-a", Relevance: 10}, {Excerpt: cognitive.ContextExcerpt{ID: "b", Text: "123456", Sensitivity: cognitive.SensitivityPrivateAllowed}, ContextScopeRef: "company-b", Relevance: 100}}})
+	if err != nil || len(b.Excerpts) != 1 || len(b.Trace.Excluded) != 1 {
+		t.Fatalf("bundle=%#v err=%v", b, err)
+	}
+}
diff --git a/dev/ACTIVE_TASK.json b/dev/ACTIVE_TASK.json
index 555815a..342b8f6 100644
--- a/dev/ACTIVE_TASK.json
+++ b/dev/ACTIVE_TASK.json
@@ -1 +1 @@
-{"task_file":"dev/tasks/GEN2-009-build-memory-retrieval-fabric-as-rebuildable-projections.json","task_id":"GEN2-009","task_revision":1}
\ No newline at end of file
+{"task_file":"dev/tasks/GEN2-010-context-compiler-v2-with-budgets-coverage-and-iterative-retrieval.json","task_id":"GEN2-010","task_revision":1}
\ No newline at end of file