feat(work): persist governed development candidates

DEV-000214 durable Agent Execution recovery

adapters/postgres/capability_repository.go

@@ -437,6 +437,24 @@ func (r *CapabilityRepository) LoadCognitiveCandidatesForProfile(ctx context.Con
 	return r.loadCognitiveCandidates(ctx, capabilityID, owner, profileID)
 }
 
+func (r *CapabilityRepository) LoadCognitiveCandidate(ctx context.Context, bindingID capability.CapabilityBindingID, revision int64) (capability.ResolvedCognitiveBinding, error) {
+	var capabilityID capability.CapabilityID
+	var owner identity.PrincipalID
+	if err := r.pool.QueryRow(ctx, `SELECT capability_id,owner_principal_id FROM capability.cognitive_bindings WHERE binding_id=$1 AND revision=$2`, bindingID, revision).Scan(&capabilityID, &owner); err != nil {
+		return capability.ResolvedCognitiveBinding{}, err
+	}
+	candidates, err := r.loadCognitiveCandidates(ctx, capabilityID, owner, "")
+	if err != nil {
+		return capability.ResolvedCognitiveBinding{}, err
+	}
+	for _, candidate := range candidates {
+		if candidate.Binding.ID == bindingID && candidate.Binding.Revision == revision {
+			return candidate, nil
+		}
+	}
+	return capability.ResolvedCognitiveBinding{}, pgx.ErrNoRows
+}
+
 func (r *CapabilityRepository) loadCognitiveCandidates(ctx context.Context, capabilityID capability.CapabilityID, owner identity.PrincipalID, profileID capability.TaskEvaluationProfileID) ([]capability.ResolvedCognitiveBinding, error) {
 	rows, err := r.pool.Query(ctx, `SELECT
 		b.binding_id,b.revision,b.capability_id,b.owner_principal_id,b.provider_instance_id,b.provider_revision,b.model_descriptor_id,b.model_revision,b.data_policy,b.qualification,b.activation,b.health,b.limit_policy_ref,

adapters/postgres/work_repository.go

@@ -2,11 +2,14 @@ package postgres
 
 import (
 	"context"
+	"encoding/json"
 	"errors"
 	"fmt"
+	"reflect"
 	"slices"
 	"time"
 
+	"git.cin.su/m/Assistant/contracts/capability"
 	"git.cin.su/m/Assistant/contracts/work"
 	"github.com/jackc/pgx/v5"
 	"github.com/jackc/pgx/v5/pgxpool"
@@ -15,10 +18,11 @@ import (
 type WorkRepository struct{ pool *pgxpool.Pool }
 
 var (
-	ErrDispatchIntentConflict  = errors.New("dispatch intent idempotency conflict")
-	ErrAgentLeaseUnavailable   = errors.New("agent lease unavailable")
-	ErrAgentCallbackRejected   = errors.New("agent callback rejected")
-	ErrDevelopmentGateConflict = errors.New("development gate revision conflict")
+	ErrDispatchIntentConflict       = errors.New("dispatch intent idempotency conflict")
+	ErrAgentLeaseUnavailable        = errors.New("agent lease unavailable")
+	ErrAgentCallbackRejected        = errors.New("agent callback rejected")
+	ErrDevelopmentGateConflict      = errors.New("development gate revision conflict")
+	ErrDevelopmentCandidateConflict = errors.New("development candidate conflict")
 )
 
 func OpenWork(ctx context.Context, config ContinuityConfig) (*WorkRepository, error) {
@@ -101,21 +105,60 @@ func (r *WorkRepository) SaveDevelopmentGate(ctx context.Context, gate work.Deve
 	return nil
 }
 
+func (r *WorkRepository) SaveExtensionProposal(ctx context.Context, value work.ExtensionProposal) error {
+	result, err := r.pool.Exec(ctx, `INSERT INTO work.extension_proposals(proposal_id,requested_by_principal_id,stage,evidence_refs,deduplicated_signal_keys,desired_outcome,smallest_change_layer,affected_owners,affected_contracts,risk_tier,evaluation_plan,alternatives,rollback_plan,assumptions,created_at_unix_millis) VALUES($1,$2,$3,$4,$5,$6,$7,$8,$9,$10,$11,$12,$13,$14,$15) ON CONFLICT(proposal_id) DO NOTHING`, value.ID, value.RequestedByPrincipalID, value.Stage, value.EvidenceRefs, value.DeduplicatedSignalKeys, value.DesiredOutcome, value.SmallestChangeLayer, value.AffectedOwners, value.AffectedContracts, value.RiskTier, value.EvaluationPlan, value.Alternatives, value.RollbackPlan, value.Assumptions, value.CreatedAtUnixMillis)
+	if err != nil {
+		return err
+	}
+	if result.RowsAffected() != 1 {
+		return ErrDevelopmentCandidateConflict
+	}
+	return nil
+}
+
+func (r *WorkRepository) SaveDevelopmentScaffold(ctx context.Context, value work.DevelopmentScaffold) error {
+	result, err := r.pool.Exec(ctx, `INSERT INTO work.development_scaffolds(scaffold_id,requested_by_principal_id,stage,proposal_ref,base_repo_revision,worktree_ref,task_intent,modules,allowed_paths,forbidden_paths,required_tests,artifact_lineage_refs,protected_main_access,production_access,secret_access,created_at_unix_millis) VALUES($1,$2,$3,$4,$5,$6,$7,$8,$9,$10,$11,$12,$13,$14,$15,$16) ON CONFLICT(scaffold_id) DO NOTHING`, value.ID, value.RequestedByPrincipalID, value.Stage, value.ProposalRef, value.BaseRepoRevision, value.WorktreeRef, value.TaskIntent, value.Modules, value.AllowedPaths, value.ForbiddenPaths, value.RequiredTests, value.ArtifactLineageRefs, value.ProtectedMainAccess, value.ProductionAccess, value.SecretAccess, value.CreatedAtUnixMillis)
+	if err != nil {
+		return err
+	}
+	if result.RowsAffected() != 1 {
+		return ErrDevelopmentCandidateConflict
+	}
+	return nil
+}
+
 func (r *WorkRepository) SaveDispatchIntent(ctx context.Context, intent work.AgentDispatchIntent) error {
 	tx, err := r.pool.Begin(ctx)
 	if err != nil {
 		return err
 	}
 	defer tx.Rollback(ctx)
-	_, err = tx.Exec(ctx, `INSERT INTO work.agent_dispatch_intents(dispatch_id,idempotency_key,delegation_id,run_id,implementation_id,implementation_revision,source_revision,worktree_id,verification_plan_ref,created_at_unix_millis,specialist_purpose,task_evaluation_profile_id,task_evaluation_binding_id,task_evaluation_case_ids) VALUES($1,$2,$3,$4,$5,$6,$7,$8,$9,$10,$11,$12,$13,$14) ON CONFLICT(idempotency_key) DO NOTHING`, intent.DispatchID, intent.IdempotencyKey, intent.DelegationID, intent.RunID, intent.ImplementationID, intent.ImplementationRevision, intent.SourceRevision, intent.WorktreeID, intent.VerificationPlanRef, intent.CreatedAtUnixMillis, intent.SpecialistPurpose, intent.TaskEvaluationProfileID, intent.TaskEvaluationBindingID, intent.TaskEvaluationCaseIDs)
+	profileJSON, casesJSON, err := marshalTaskPayload(intent.TaskEvaluationProfile, intent.TaskEvaluationCases)
+	if err != nil {
+		return err
+	}
+	executionJSON, err := json.Marshal(intent.TaskEvaluationExecution)
+	if err != nil {
+		return err
+	}
+	_, err = tx.Exec(ctx, `INSERT INTO work.agent_dispatch_intents(dispatch_id,idempotency_key,delegation_id,run_id,implementation_id,implementation_revision,source_revision,worktree_id,verification_plan_ref,created_at_unix_millis,specialist_purpose,task_evaluation_profile_id,task_evaluation_binding_id,task_evaluation_case_ids,task_evaluation_profile,task_evaluation_cases,task_evaluation_execution) VALUES($1,$2,$3,$4,$5,$6,$7,$8,$9,$10,$11,$12,$13,$14,$15,$16,$17) ON CONFLICT(idempotency_key) DO NOTHING`, intent.DispatchID, intent.IdempotencyKey, intent.DelegationID, intent.RunID, intent.ImplementationID, intent.ImplementationRevision, intent.SourceRevision, intent.WorktreeID, intent.VerificationPlanRef, intent.CreatedAtUnixMillis, intent.SpecialistPurpose, intent.TaskEvaluationProfileID, intent.TaskEvaluationBindingID, intent.TaskEvaluationCaseIDs, profileJSON, casesJSON, executionJSON)
 	if err != nil {
 		return fmt.Errorf("save dispatch intent: %w", err)
 	}
 	var existing work.AgentDispatchIntent
-	err = tx.QueryRow(ctx, `SELECT dispatch_id,idempotency_key,delegation_id,run_id,implementation_id,implementation_revision,source_revision,worktree_id,verification_plan_ref,created_at_unix_millis,specialist_purpose,task_evaluation_profile_id,task_evaluation_binding_id,task_evaluation_case_ids FROM work.agent_dispatch_intents WHERE idempotency_key=$1`, intent.IdempotencyKey).Scan(&existing.DispatchID, &existing.IdempotencyKey, &existing.DelegationID, &existing.RunID, &existing.ImplementationID, &existing.ImplementationRevision, &existing.SourceRevision, &existing.WorktreeID, &existing.VerificationPlanRef, &existing.CreatedAtUnixMillis, &existing.SpecialistPurpose, &existing.TaskEvaluationProfileID, &existing.TaskEvaluationBindingID, &existing.TaskEvaluationCaseIDs)
+	var profileJSONExisting, casesJSONExisting, executionJSONExisting []byte
+	err = tx.QueryRow(ctx, `SELECT dispatch_id,idempotency_key,delegation_id,run_id,implementation_id,implementation_revision,source_revision,worktree_id,verification_plan_ref,created_at_unix_millis,specialist_purpose,task_evaluation_profile_id,task_evaluation_binding_id,task_evaluation_case_ids,task_evaluation_profile,task_evaluation_cases,task_evaluation_execution FROM work.agent_dispatch_intents WHERE idempotency_key=$1`, intent.IdempotencyKey).Scan(&existing.DispatchID, &existing.IdempotencyKey, &existing.DelegationID, &existing.RunID, &existing.ImplementationID, &existing.ImplementationRevision, &existing.SourceRevision, &existing.WorktreeID, &existing.VerificationPlanRef, &existing.CreatedAtUnixMillis, &existing.SpecialistPurpose, &existing.TaskEvaluationProfileID, &existing.TaskEvaluationBindingID, &existing.TaskEvaluationCaseIDs, &profileJSONExisting, &casesJSONExisting, &executionJSONExisting)
 	if err != nil {
 		return fmt.Errorf("read dispatch intent: %w", err)
 	}
+	if err := unmarshalTaskPayload(profileJSONExisting, casesJSONExisting, &existing.TaskEvaluationProfile, &existing.TaskEvaluationCases); err != nil {
+		return err
+	}
+	if len(executionJSONExisting) > 0 && string(executionJSONExisting) != "null" {
+		if err := json.Unmarshal(executionJSONExisting, &existing.TaskEvaluationExecution); err != nil {
+			return err
+		}
+	}
 	if !sameDispatchIntent(existing, intent) {
 		return ErrDispatchIntentConflict
 	}
@@ -123,15 +166,24 @@ func (r *WorkRepository) SaveDispatchIntent(ctx context.Context, intent work.Age
 }
 
 func sameDispatchIntent(left, right work.AgentDispatchIntent) bool {
-	return left.DispatchID == right.DispatchID && left.IdempotencyKey == right.IdempotencyKey && left.DelegationID == right.DelegationID && left.RunID == right.RunID && left.ImplementationID == right.ImplementationID && left.ImplementationRevision == right.ImplementationRevision && left.SourceRevision == right.SourceRevision && left.WorktreeID == right.WorktreeID && left.VerificationPlanRef == right.VerificationPlanRef && left.CreatedAtUnixMillis == right.CreatedAtUnixMillis && left.SpecialistPurpose == right.SpecialistPurpose && left.TaskEvaluationProfileID == right.TaskEvaluationProfileID && left.TaskEvaluationBindingID == right.TaskEvaluationBindingID && slices.Equal(left.TaskEvaluationCaseIDs, right.TaskEvaluationCaseIDs)
+	return left.DispatchID == right.DispatchID && left.IdempotencyKey == right.IdempotencyKey && left.DelegationID == right.DelegationID && left.RunID == right.RunID && left.ImplementationID == right.ImplementationID && left.ImplementationRevision == right.ImplementationRevision && left.SourceRevision == right.SourceRevision && left.WorktreeID == right.WorktreeID && left.VerificationPlanRef == right.VerificationPlanRef && left.CreatedAtUnixMillis == right.CreatedAtUnixMillis && left.SpecialistPurpose == right.SpecialistPurpose && left.TaskEvaluationProfileID == right.TaskEvaluationProfileID && left.TaskEvaluationBindingID == right.TaskEvaluationBindingID && slices.Equal(left.TaskEvaluationCaseIDs, right.TaskEvaluationCaseIDs) && reflect.DeepEqual(left.TaskEvaluationProfile, right.TaskEvaluationProfile) && slices.Equal(left.TaskEvaluationCases, right.TaskEvaluationCases) && reflect.DeepEqual(left.TaskEvaluationExecution, right.TaskEvaluationExecution)
 }
 
 func (r *WorkRepository) LoadDispatchIntent(ctx context.Context, dispatchID string) (work.AgentDispatchIntent, error) {
 	var intent work.AgentDispatchIntent
-	err := r.pool.QueryRow(ctx, `SELECT dispatch_id,idempotency_key,delegation_id,run_id,implementation_id,implementation_revision,source_revision,worktree_id,verification_plan_ref,created_at_unix_millis,specialist_purpose,task_evaluation_profile_id,task_evaluation_binding_id,task_evaluation_case_ids FROM work.agent_dispatch_intents WHERE dispatch_id=$1`, dispatchID).Scan(&intent.DispatchID, &intent.IdempotencyKey, &intent.DelegationID, &intent.RunID, &intent.ImplementationID, &intent.ImplementationRevision, &intent.SourceRevision, &intent.WorktreeID, &intent.VerificationPlanRef, &intent.CreatedAtUnixMillis, &intent.SpecialistPurpose, &intent.TaskEvaluationProfileID, &intent.TaskEvaluationBindingID, &intent.TaskEvaluationCaseIDs)
+	var profileJSON, casesJSON, executionJSON []byte
+	err := r.pool.QueryRow(ctx, `SELECT dispatch_id,idempotency_key,delegation_id,run_id,implementation_id,implementation_revision,source_revision,worktree_id,verification_plan_ref,created_at_unix_millis,specialist_purpose,task_evaluation_profile_id,task_evaluation_binding_id,task_evaluation_case_ids,task_evaluation_profile,task_evaluation_cases,task_evaluation_execution FROM work.agent_dispatch_intents WHERE dispatch_id=$1`, dispatchID).Scan(&intent.DispatchID, &intent.IdempotencyKey, &intent.DelegationID, &intent.RunID, &intent.ImplementationID, &intent.ImplementationRevision, &intent.SourceRevision, &intent.WorktreeID, &intent.VerificationPlanRef, &intent.CreatedAtUnixMillis, &intent.SpecialistPurpose, &intent.TaskEvaluationProfileID, &intent.TaskEvaluationBindingID, &intent.TaskEvaluationCaseIDs, &profileJSON, &casesJSON, &executionJSON)
 	if err != nil {
 		return work.AgentDispatchIntent{}, fmt.Errorf("load dispatch intent: %w", err)
 	}
+	if err := unmarshalTaskPayload(profileJSON, casesJSON, &intent.TaskEvaluationProfile, &intent.TaskEvaluationCases); err != nil {
+		return work.AgentDispatchIntent{}, err
+	}
+	if len(executionJSON) > 0 && string(executionJSON) != "null" {
+		if err := json.Unmarshal(executionJSON, &intent.TaskEvaluationExecution); err != nil {
+			return work.AgentDispatchIntent{}, err
+		}
+	}
 	return intent, nil
 }
 
@@ -147,7 +199,7 @@ func (r *WorkRepository) ClaimNextDispatch(ctx context.Context, workerID string,
 	}
 	defer tx.Rollback(ctx)
 	var item work.AgentDispatchQueueItem
-	err = tx.QueryRow(ctx, `SELECT dispatch_id,state,available_at_unix_millis,attempts,claimed_by,updated_at_unix_millis FROM work.agent_dispatch_queue WHERE state='QUEUED' AND available_at_unix_millis <= $1 ORDER BY available_at_unix_millis,dispatch_id FOR UPDATE SKIP LOCKED LIMIT 1`, nowUnixMillis).Scan(&item.DispatchID, &item.State, &item.AvailableAtUnixMillis, &item.Attempts, &item.ClaimedBy, &item.UpdatedAtUnixMillis)
+	err = tx.QueryRow(ctx, `SELECT dispatch_id,state,available_at_unix_millis,attempts,claimed_by,updated_at_unix_millis FROM work.agent_dispatch_queue WHERE state='QUEUED' AND available_at_unix_millis <= $1 AND attempts < retry_limit ORDER BY available_at_unix_millis,dispatch_id FOR UPDATE SKIP LOCKED LIMIT 1`, nowUnixMillis).Scan(&item.DispatchID, &item.State, &item.AvailableAtUnixMillis, &item.Attempts, &item.ClaimedBy, &item.UpdatedAtUnixMillis)
 	if err != nil {
 		if errors.Is(err, pgx.ErrNoRows) {
 			return work.AgentDispatchQueueItem{}, nil
@@ -190,6 +242,21 @@ func (r *WorkRepository) CompleteDispatch(ctx context.Context, dispatchID, worke
 	return nil
 }
 
+func (r *WorkRepository) RetryDispatch(ctx context.Context, dispatchID, workerID string, nowUnixMillis int64, delay time.Duration) error {
+	if delay < 0 {
+		return fmt.Errorf("invalid retry delay")
+	}
+	availableAt := nowUnixMillis + delay.Milliseconds()
+	command, err := r.pool.Exec(ctx, `UPDATE work.agent_dispatch_queue SET state=CASE WHEN attempts >= retry_limit THEN 'FAILED' ELSE 'QUEUED' END,available_at_unix_millis=$1,claimed_by='',updated_at_unix_millis=$2 WHERE dispatch_id=$3 AND state='CLAIMED' AND claimed_by=$4`, availableAt, nowUnixMillis, dispatchID, workerID)
+	if err != nil {
+		return err
+	}
+	if command.RowsAffected() != 1 {
+		return ErrAgentCallbackRejected
+	}
+	return nil
+}
+
 func (r *WorkRepository) SaveWorkGraph(ctx context.Context, graph work.WorkGraph) error {
 	tx, err := r.pool.Begin(ctx)
 	if err != nil {
@@ -200,7 +267,11 @@ func (r *WorkRepository) SaveWorkGraph(ctx context.Context, graph work.WorkGraph
 		return err
 	}
 	for _, node := range graph.Nodes {
-		if _, err := tx.Exec(ctx, `INSERT INTO work.graph_nodes(graph_id,revision,node_id,dispatch_id,idempotency_key,state,attempts,purpose,task_profile_id,binding_id,case_ids) VALUES($1,$2,$3,$4,$5,$6,$7,$8,$9,$10,$11) ON CONFLICT(graph_id,revision,node_id) DO NOTHING`, graph.ID, graph.Revision, node.ID, node.DispatchID, node.IdempotencyKey, node.State, node.Attempts, node.Purpose, node.TaskProfileID, node.BindingID, node.CaseIDs); err != nil {
+		profileJSON, casesJSON, err := marshalTaskPayload(node.TaskProfile, node.TaskCases)
+		if err != nil {
+			return err
+		}
+		if _, err := tx.Exec(ctx, `INSERT INTO work.graph_nodes(graph_id,revision,node_id,dispatch_id,idempotency_key,state,attempts,purpose,task_profile_id,binding_id,case_ids,task_evaluation_profile,task_evaluation_cases) VALUES($1,$2,$3,$4,$5,$6,$7,$8,$9,$10,$11,$12,$13) ON CONFLICT(graph_id,revision,node_id) DO NOTHING`, graph.ID, graph.Revision, node.ID, node.DispatchID, node.IdempotencyKey, node.State, node.Attempts, node.Purpose, node.TaskProfileID, node.BindingID, node.CaseIDs, profileJSON, casesJSON); err != nil {
 			return err
 		}
 	}
@@ -218,13 +289,18 @@ func (r *WorkRepository) LoadWorkGraph(ctx context.Context, graphID string, revi
 	if err != nil {
 		return work.WorkGraph{}, fmt.Errorf("load graph: %w", err)
 	}
-	rows, err := r.pool.Query(ctx, `SELECT node_id,dispatch_id,idempotency_key,state,attempts,purpose,task_profile_id,binding_id,case_ids FROM work.graph_nodes WHERE graph_id=$1 AND revision=$2 ORDER BY node_id`, graphID, revision)
+	rows, err := r.pool.Query(ctx, `SELECT node_id,dispatch_id,idempotency_key,state,attempts,purpose,task_profile_id,binding_id,case_ids,task_evaluation_profile,task_evaluation_cases FROM work.graph_nodes WHERE graph_id=$1 AND revision=$2 ORDER BY node_id`, graphID, revision)
 	if err != nil {
 		return work.WorkGraph{}, err
 	}
 	for rows.Next() {
 		var node work.GraphNode
-		if err := rows.Scan(&node.ID, &node.DispatchID, &node.IdempotencyKey, &node.State, &node.Attempts, &node.Purpose, &node.TaskProfileID, &node.BindingID, &node.CaseIDs); err != nil {
+		var profileJSON, casesJSON []byte
+		if err := rows.Scan(&node.ID, &node.DispatchID, &node.IdempotencyKey, &node.State, &node.Attempts, &node.Purpose, &node.TaskProfileID, &node.BindingID, &node.CaseIDs, &profileJSON, &casesJSON); err != nil {
+			rows.Close()
+			return work.WorkGraph{}, err
+		}
+		if err := unmarshalTaskPayload(profileJSON, casesJSON, &node.TaskProfile, &node.TaskCases); err != nil {
 			rows.Close()
 			return work.WorkGraph{}, err
 		}
@@ -276,10 +352,21 @@ func (r *WorkRepository) SaveGraphSynthesis(ctx context.Context, conflict work.C
 }
 
 func (r *WorkRepository) RecoverStaleClaims(ctx context.Context, nowUnixMillis, staleAfterMillis int64) (int64, error) {
-	command, err := r.pool.Exec(ctx, `UPDATE work.agent_dispatch_queue SET state='QUEUED',claimed_by='',updated_at_unix_millis=$1 WHERE state='CLAIMED' AND updated_at_unix_millis <= $2`, nowUnixMillis, nowUnixMillis-staleAfterMillis)
+	tx, err := r.pool.Begin(ctx)
 	if err != nil {
 		return 0, err
 	}
+	defer tx.Rollback(ctx)
+	if _, err := tx.Exec(ctx, `UPDATE work.agent_leases AS l SET state='EXPIRED' FROM work.agent_dispatch_queue AS q JOIN work.agent_dispatch_intents AS i ON i.dispatch_id=q.dispatch_id WHERE q.state='CLAIMED' AND q.updated_at_unix_millis <= $1 AND l.run_id=i.run_id AND l.state='ACTIVE'`, nowUnixMillis-staleAfterMillis); err != nil {
+		return 0, err
+	}
+	command, err := tx.Exec(ctx, `UPDATE work.agent_dispatch_queue SET state=CASE WHEN attempts >= retry_limit THEN 'FAILED' ELSE 'QUEUED' END,available_at_unix_millis=$1,claimed_by='',updated_at_unix_millis=$2 WHERE state='CLAIMED' AND updated_at_unix_millis <= $3`, nowUnixMillis, nowUnixMillis, nowUnixMillis-staleAfterMillis)
+	if err != nil {
+		return 0, err
+	}
+	if err := tx.Commit(ctx); err != nil {
+		return 0, err
+	}
 	return command.RowsAffected(), nil
 }
 
@@ -570,3 +657,32 @@ func latestRowErr(err error) error {
 	}
 	return err
 }
+
+func marshalTaskPayload(profile *capability.TaskEvaluationProfile, cases []capability.TaskEvaluationCase) ([]byte, []byte, error) {
+	var profileJSON []byte
+	var err error
+	if profile != nil {
+		profileJSON, err = json.Marshal(profile)
+		if err != nil {
+			return nil, nil, err
+		}
+	}
+	casesJSON, err := json.Marshal(cases)
+	return profileJSON, casesJSON, err
+}
+
+func unmarshalTaskPayload(profileJSON, casesJSON []byte, profile **capability.TaskEvaluationProfile, cases *[]capability.TaskEvaluationCase) error {
+	if len(profileJSON) > 0 && string(profileJSON) != "null" {
+		var value capability.TaskEvaluationProfile
+		if err := json.Unmarshal(profileJSON, &value); err != nil {
+			return err
+		}
+		*profile = &value
+	}
+	if len(casesJSON) > 0 && string(casesJSON) != "null" {
+		if err := json.Unmarshal(casesJSON, cases); err != nil {
+			return err
+		}
+	}
+	return nil
+}

cmd/agent-canary/main.go

@@ -24,7 +24,8 @@ func (s *memoryStore) SaveDispatchIntent(context.Context, work.AgentDispatchInte
 	s.writes++
 	return nil
 }
-func (s *memoryStore) SaveAgentLease(context.Context, work.AgentLease) error { s.writes++; return nil }
+func (s *memoryStore) SaveAgentLease(context.Context, work.AgentLease) error             { s.writes++; return nil }
+func (s *memoryStore) RenewAgentLease(context.Context, work.AgentLease, time.Time) error { return nil }
 func (s *memoryStore) AcceptAgentCallback(context.Context, work.AgentCallback) error {
 	s.writes++
 	return nil

cmd/agent-worker/main.go

@@ -49,9 +49,8 @@ func main() {
 			os.Exit(1)
 		}
 	} else {
-		executor = newLocalFallbackExecutor()
-		localFallback = true
-		fmt.Fprintln(os.Stderr, "protected agent execution bridge URL is not configured; local fallback preserves durable work without external mutation")
+		executor = newTaskEvaluationExecutor(envOr("COGNITIVE_WORKER_URL", "http://cognitive-worker:8083"), envOr("WORK_GRAPH_RUNTIME_URL", "http://work-graph-runtime:8088"), &http.Client{Timeout: *leaseTTL})
+		fmt.Fprintln(os.Stderr, "protected agent execution bridge URL is not configured; task evaluations use the local durable evaluator, other work remains in fallback")
 	}
 	go func() {
 		if serveErr := http.ListenAndServe(*statusAddr, workerStatusHandler(executor != nil && !localFallback, localFallback)); serveErr != nil {
@@ -107,6 +106,13 @@ func loadProtectedBridgeURLFrom(root, path string) (string, bool) {
 	return value, true
 }
 
+func envOr(name, fallback string) string {
+	if value := strings.TrimSpace(os.Getenv(name)); value != "" {
+		return value
+	}
+	return fallback
+}
+
 func resolveDatabasePassword(name, refName string, consumer secretcontracts.RuntimeConsumer) (string, error) {
 	if _, ok := os.LookupEnv(name); ok {
 		return "", fmt.Errorf("%s direct environment secret is forbidden", name)

cmd/agent-worker/task_evaluation_executor.go

@@ -0,0 +1,92 @@
+package main
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"strings"
+	"time"
+
+	"git.cin.su/m/Assistant/contracts/artifact"
+	"git.cin.su/m/Assistant/contracts/capability"
+	"git.cin.su/m/Assistant/contracts/work"
+	capabilitydomain "git.cin.su/m/Assistant/modules/capability/domain"
+)
+
+type taskEvaluationExecutor struct {
+	cognitiveURL string
+	callbackURL  string
+	client       *http.Client
+	fallback     localFallbackExecutor
+}
+
+func newTaskEvaluationExecutor(cognitiveURL, callbackURL string, client *http.Client) taskEvaluationExecutor {
+	if client == nil {
+		client = http.DefaultClient
+	}
+	return taskEvaluationExecutor{cognitiveURL: strings.TrimRight(cognitiveURL, "/"), callbackURL: strings.TrimRight(callbackURL, "/"), client: client, fallback: newLocalFallbackExecutor()}
+}
+
+func (e taskEvaluationExecutor) Execute(ctx context.Context, request work.AgentExecutionRequest) (work.AgentExecutionResult, error) {
+	intent := request.Intent
+	if intent.TaskEvaluationExecution == nil || intent.TaskEvaluationProfile == nil || len(intent.TaskEvaluationCases) == 0 {
+		return e.fallback.Execute(ctx, request)
+	}
+	execution := intent.TaskEvaluationExecution
+	if execution.GraphID == "" || execution.NodeID == "" || execution.BindingRevision < 1 || execution.ActorID == "" || execution.PrincipalID == "" || execution.ScopeID == "" {
+		return e.fallback.Execute(ctx, request)
+	}
+	if e.cognitiveURL == "" || e.callbackURL == "" {
+		return e.fallback.Execute(ctx, request)
+	}
+	payload := capability.TaskEvaluationExecutionRequest{Profile: *intent.TaskEvaluationProfile, CapabilityID: intent.TaskEvaluationProfile.CapabilityID, BindingID: intent.TaskEvaluationBindingID, BindingRevision: execution.BindingRevision, ActorID: execution.ActorID, PrincipalID: execution.PrincipalID, ScopeID: execution.ScopeID, Cases: intent.TaskEvaluationCases, MaxOutputBytes: 4096}
+	response, err := postJSON[capability.TaskEvaluationExecutionResponse](ctx, e.client, e.cognitiveURL+"/v1/task-evaluations/execute", payload)
+	if err != nil {
+		return work.AgentExecutionResult{}, err
+	}
+	if len(response.Observations) == 0 || response.ObservedAtUnixMillis < 1 {
+		return work.AgentExecutionResult{}, fmt.Errorf("task evaluation returned no observations")
+	}
+	if len(intent.TaskEvaluationCases) == 0 {
+		return work.AgentExecutionResult{}, fmt.Errorf("task evaluation cases are missing")
+	}
+	evaluation, err := capabilitydomain.BuildTaskEvaluation(*intent.TaskEvaluationProfile, capability.TaskEvaluationID("evaluation:"+intent.DispatchID), response.BindingID, response.BindingRevision, intent.TaskEvaluationProfile.CapabilityID, response.Observations, artifact.ArtifactID(intent.TaskEvaluationCases[0].EvidenceArtifactRef), response.ObservedAtUnixMillis)
+	if err != nil {
+		return work.AgentExecutionResult{}, err
+	}
+	callback := work.TaskEvaluationEvidenceCallback{GraphID: execution.GraphID, Revision: execution.GraphRevision, NodeID: execution.NodeID, Evaluation: evaluation, Succeeded: true}
+	if _, err := postJSON[json.RawMessage](ctx, e.client, e.callbackURL+"/v1/work-graphs/task-evaluations/callback", callback); err != nil {
+		return work.AgentExecutionResult{}, err
+	}
+	return work.AgentExecutionResult{State: work.AgentExecutionCompleted, Summary: "task evaluation executed, aggregated and accepted by Work Graph callback", OutcomeRef: string(evaluation.ID), ArtifactRefs: []string{string(evaluation.ArtifactID)}, ObservedAtUnixMillis: time.Now().UnixMilli()}, nil
+}
+
+func postJSON[T any](ctx context.Context, client *http.Client, url string, payload any) (T, error) {
+	var result T
+	body, err := json.Marshal(payload)
+	if err != nil {
+		return result, err
+	}
+	req, err := http.NewRequestWithContext(ctx, http.MethodPost, url, bytes.NewReader(body))
+	if err != nil {
+		return result, err
+	}
+	req.Header.Set("Content-Type", "application/json")
+	resp, err := client.Do(req)
+	if err != nil {
+		return result, err
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode < 200 || resp.StatusCode >= 300 {
+		return result, fmt.Errorf("POST %s: status %s", url, resp.Status)
+	}
+	if resp.StatusCode == http.StatusNoContent {
+		return result, nil
+	}
+	if err := json.NewDecoder(resp.Body).Decode(&result); err != nil {
+		return result, err
+	}
+	return result, nil
+}

cmd/agent-worker/task_evaluation_executor_test.go

@@ -0,0 +1,38 @@
+package main
+
+import (
+	"context"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"git.cin.su/m/Assistant/contracts/capability"
+	"git.cin.su/m/Assistant/contracts/work"
+)
+
+func TestTaskEvaluationExecutorInvokesAggregatesAndCallbacks(t *testing.T) {
+	profile := capability.TaskEvaluationProfile{ID: "profile-1", Revision: 1, CapabilityID: "capability-1", Stage: capability.TaskEvaluationGeneral, BenchmarkVersion: "general-v1", RequiredCaseIDs: []string{"case-1"}, QualityWeightMillis: 600, ReliabilityWeightMillis: 300, LatencyWeightMillis: 100}
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Path == "/v1/task-evaluations/execute" {
+			_ = json.NewEncoder(w).Encode(capability.TaskEvaluationExecutionResponse{ProfileID: profile.ID, BindingID: "binding-1", BindingRevision: 3, Observations: []capability.TaskCaseObservation{{CaseID: "case-1", Result: capability.EvaluationSupported, EvidenceArtifactRef: "artifact-1"}}, ObservedAtUnixMillis: 10})
+			return
+		}
+		if r.URL.Path == "/v1/work-graphs/task-evaluations/callback" {
+			var callback work.TaskEvaluationEvidenceCallback
+			if err := json.NewDecoder(r.Body).Decode(&callback); err != nil || callback.GraphID != "graph-1" || callback.NodeID != "node-1" || callback.Evaluation.Result != capability.EvaluationSupported {
+				http.Error(w, "invalid callback", http.StatusBadRequest)
+				return
+			}
+			w.WriteHeader(http.StatusNoContent)
+			return
+		}
+		http.NotFound(w, r)
+	}))
+	defer server.Close()
+	executor := newTaskEvaluationExecutor(server.URL, server.URL, server.Client())
+	result, err := executor.Execute(context.Background(), work.AgentExecutionRequest{Intent: work.AgentDispatchIntent{DispatchID: "dispatch-1", TaskEvaluationBindingID: "binding-1", TaskEvaluationProfile: &profile, TaskEvaluationCases: []capability.TaskEvaluationCase{{CaseID: "case-1", Prompt: "answer", EvidenceArtifactRef: "artifact-1"}}, TaskEvaluationExecution: &work.TaskEvaluationDispatchContext{GraphID: "graph-1", GraphRevision: 1, NodeID: "node-1", BindingRevision: 3, ActorID: "actor-1", PrincipalID: "principal-1", ScopeID: "scope-1"}}})
+	if err != nil || result.State != work.AgentExecutionCompleted || result.OutcomeRef == "" {
+		t.Fatalf("result=%+v err=%v", result, err)
+	}
+}

cmd/cognitive-worker/gateway.go

@@ -26,6 +26,10 @@ type bindingResolver interface {
 	RegisterDiscovery(context.Context, capability.CognitiveDiscoverySnapshot) (capability.CognitiveDiscoveryRegistration, error)
 }
 
+type candidateBindingResolver interface {
+	ResolveCandidate(context.Context, capability.CapabilityBindingID, int64) (capability.ResolvedCognitiveBinding, error)
+}
+
 type admissionClient interface {
 	Admit(context.Context, string, capability.AdmissionRequest) (capability.AdmissionDecision, capability.AdmissionLease, error)
 	Release(context.Context, capability.AdmissionLease) error
@@ -341,6 +345,26 @@ func (r *httpBindingResolver) Resolve(ctx context.Context, value capability.Cogn
 	return result, err
 }
 
+func (r *httpBindingResolver) ResolveCandidate(ctx context.Context, bindingID capability.CapabilityBindingID, revision int64) (capability.ResolvedCognitiveBinding, error) {
+	var result capability.ResolvedCognitiveBinding
+	target := *r.base
+	target.Path = "/v1/cognitive-bindings/" + url.PathEscape(string(bindingID)) + "/revisions/" + fmt.Sprint(revision) + "/snapshot"
+	request, err := http.NewRequestWithContext(ctx, http.MethodGet, target.String(), nil)
+	if err != nil {
+		return result, err
+	}
+	response, err := r.client.Do(request)
+	if err != nil {
+		return result, err
+	}
+	defer response.Body.Close()
+	if response.StatusCode < 200 || response.StatusCode >= 300 {
+		return result, fmt.Errorf("candidate status %d", response.StatusCode)
+	}
+	err = json.NewDecoder(io.LimitReader(response.Body, 64<<10)).Decode(&result)
+	return result, err
+}
+
 func (r *httpBindingResolver) Observe(ctx context.Context, value capability.CognitiveUsageObservation) error {
 	return r.post(ctx, "/v1/cognitive-usage-observations", value, nil)
 }

cmd/cognitive-worker/main.go

@@ -166,6 +166,7 @@ func main() {
 	mux.HandleFunc("POST /v1/advisory-policy", gateway.policyHandler)
 	mux.HandleFunc("POST /v1/advisories", gateway.advisoryHandler)
 	mux.HandleFunc("POST /v1/interpretations", gateway.interpretationHandler)
+	mux.HandleFunc("POST /v1/task-evaluations/execute", gateway.taskEvaluationHandler)
 	discovery := discoveryService{resolver: resolver, providers: discoveries, owner: identity.PrincipalID(envOr("COGNITIVE_OWNER_PRINCIPAL_ID", "domovoy-creator-principal")), now: time.Now}
 	mux.HandleFunc("POST /v1/provider-discovery/{provider}", discovery.handler)
 	refreshProviderDiscoveries(resolver, discovery)

cmd/cognitive-worker/task_evaluation.go

@@ -0,0 +1,93 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"sync"
+	"time"
+
+	"git.cin.su/m/Assistant/contracts/capability"
+	"git.cin.su/m/Assistant/contracts/cognitive"
+)
+
+func (g cognitiveGateway) taskEvaluationHandler(w http.ResponseWriter, r *http.Request) {
+	var request capability.TaskEvaluationExecutionRequest
+	if !decodeJSON(w, r, 256<<10, &request) {
+		return
+	}
+	if err := request.Profile.Validate(); err != nil || request.CapabilityID == "" || request.CapabilityID != request.Profile.CapabilityID || request.BindingID == "" || request.BindingRevision < 1 || request.ActorID == "" || request.PrincipalID == "" || request.ScopeID == "" || request.MaxOutputBytes < 1 || len(request.Cases) != len(request.Profile.RequiredCaseIDs) {
+		http.Error(w, "invalid task evaluation execution request", http.StatusBadRequest)
+		return
+	}
+	resolver, ok := g.resolver.(candidateBindingResolver)
+	if !ok {
+		http.Error(w, "exact candidate resolver unavailable", http.StatusServiceUnavailable)
+		return
+	}
+	selected, err := resolver.ResolveCandidate(r.Context(), request.BindingID, request.BindingRevision)
+	if err != nil || selected.Binding.ID != request.BindingID || selected.Binding.Revision != request.BindingRevision || selected.Binding.CapabilityID != request.CapabilityID || selected.Binding.OwnerPrincipalID != request.PrincipalID {
+		http.Error(w, "cognitive binding snapshot unavailable", http.StatusConflict)
+		return
+	}
+	if selected.Binding.DataPolicy != capability.DataPolicyLocalOnly && !request.EgressAcknowledged {
+		http.Error(w, "external egress acknowledgement required", http.StatusBadRequest)
+		return
+	}
+	provider := g.provider(selected)
+	if provider == nil {
+		http.Error(w, "cognitive provider unavailable", http.StatusServiceUnavailable)
+		return
+	}
+	caseSet := make(map[string]struct{}, len(request.Profile.RequiredCaseIDs))
+	for _, id := range request.Profile.RequiredCaseIDs {
+		caseSet[id] = struct{}{}
+	}
+	observations := make([]capability.TaskCaseObservation, len(request.Cases))
+	var wg sync.WaitGroup
+	seenCases := make(map[string]struct{}, len(request.Cases))
+	for i, item := range request.Cases {
+		if item.CaseID == "" || item.Prompt == "" || item.EvidenceArtifactRef == "" {
+			http.Error(w, "invalid task evaluation case", http.StatusBadRequest)
+			return
+		}
+		if _, exists := caseSet[item.CaseID]; !exists {
+			http.Error(w, "task evaluation case is not in profile", http.StatusBadRequest)
+			return
+		}
+		if _, exists := seenCases[item.CaseID]; exists {
+			http.Error(w, "duplicate task evaluation case", http.StatusBadRequest)
+			return
+		}
+		seenCases[item.CaseID] = struct{}{}
+		wg.Add(1)
+		go func(index int, item capability.TaskEvaluationCase) {
+			defer wg.Done()
+			started := time.Now()
+			invocation := cognitive.AdvisoryRequest{Version: cognitive.CreatorAdvisoryV1, RequestID: cognitive.RequestID(fmt.Sprintf("task-evaluation:%s:%s", request.Profile.ID, item.CaseID)), ActorID: request.ActorID, PrincipalID: request.PrincipalID, ScopeID: request.ScopeID, Message: item.Prompt, MaxOutputBytes: int(request.MaxOutputBytes), ProviderBindingID: selected.Binding.ID, ProviderBindingRevision: selected.Binding.Revision, ProviderInstanceID: selected.Provider.ID, ModelDescriptorID: selected.Model.ID, ProviderModelID: selected.Model.ProviderModelID}
+			response, invokeErr := g.invokeAdmitted(r.Context(), string(invocation.RequestID), provider, invocation, int(request.MaxOutputBytes))
+			observation := capability.TaskCaseObservation{CaseID: item.CaseID, LatencyMicros: time.Since(started).Microseconds(), EvidenceArtifactRef: item.EvidenceArtifactRef}
+			if invokeErr == nil && response.FinishReason == cognitive.FinishCompleted && response.AdvisoryText != "" {
+				observation.Result = capability.EvaluationSupported
+				// Invocation success proves reachability/support for this case,
+				// not semantic answer quality. A verifier may score quality later.
+				observation.QualityScoreMillis = 0
+			} else {
+				observation.Result = capability.EvaluationUnknown
+				observation.CriticalFailure = invokeErr != nil
+			}
+			observations[index] = observation
+		}(i, item)
+	}
+	if len(seenCases) != len(caseSet) {
+		http.Error(w, "task evaluation case set is incomplete", http.StatusBadRequest)
+		return
+	}
+	wg.Wait()
+	writeTaskEvaluationJSON(w, capability.TaskEvaluationExecutionResponse{ProfileID: request.Profile.ID, BindingID: selected.Binding.ID, BindingRevision: selected.Binding.Revision, Observations: observations, ObservedAtUnixMillis: time.Now().UnixMilli()})
+}
+
+func writeTaskEvaluationJSON(w http.ResponseWriter, value any) {
+	w.Header().Set("Content-Type", "application/json")
+	_ = json.NewEncoder(w).Encode(value)
+}

cmd/cognitive-worker/task_evaluation_test.go

@@ -0,0 +1,53 @@
+package main
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+	"time"
+
+	"git.cin.su/m/Assistant/contracts/authority"
+	"git.cin.su/m/Assistant/contracts/capability"
+	"git.cin.su/m/Assistant/contracts/cognitive"
+	"git.cin.su/m/Assistant/contracts/identity"
+)
+
+type candidateRegistryStub struct {
+	registryStub
+	selected capability.ResolvedCognitiveBinding
+}
+
+func (s *candidateRegistryStub) ResolveCandidate(context.Context, capability.CapabilityBindingID, int64) (capability.ResolvedCognitiveBinding, error) {
+	return s.selected, nil
+}
+
+func TestTaskEvaluationHandlerInvokesEveryBoundedCase(t *testing.T) {
+	selected := gatewaySelection()
+	registry := &candidateRegistryStub{selected: selected}
+	provider := &stubAdvisoryProvider{response: cognitive.AdvisoryResponse{Version: cognitive.CreatorAdvisoryV1, FinishReason: cognitive.FinishCompleted, AdvisoryText: "observed response"}}
+	gateway := cognitiveGateway{
+		resolver: registry,
+		providers: map[capability.ProviderKind][]providerRegistration{
+			selected.Provider.Kind: {{ProviderInstanceID: selected.Provider.ID, Kind: selected.Provider.Kind, EndpointRef: selected.Provider.EndpointRef, CredentialRef: selected.Provider.CredentialRef, Provider: provider}},
+		},
+		now: func() time.Time { return time.UnixMilli(1000) },
+	}
+	profile := capability.TaskEvaluationProfile{ID: "profile-general", Revision: 1, CapabilityID: selected.Binding.CapabilityID, Stage: capability.TaskEvaluationGeneral, BenchmarkVersion: "general-v1", RequiredCaseIDs: []string{"case-a", "case-b"}, QualityWeightMillis: 600, ReliabilityWeightMillis: 300, LatencyWeightMillis: 100}
+	request := capability.TaskEvaluationExecutionRequest{Profile: profile, CapabilityID: selected.Binding.CapabilityID, BindingID: selected.Binding.ID, BindingRevision: selected.Binding.Revision, ActorID: identity.ActorID("actor-1"), PrincipalID: selected.Binding.OwnerPrincipalID, ScopeID: authority.ScopeID("scope-1"), MaxOutputBytes: 512, EgressAcknowledged: true, Cases: []capability.TaskEvaluationCase{{CaseID: "case-a", Prompt: "one", EvidenceArtifactRef: "artifact:a"}, {CaseID: "case-b", Prompt: "two", EvidenceArtifactRef: "artifact:b"}}}
+	payload, _ := json.Marshal(request)
+	recorder := httptest.NewRecorder()
+	gateway.taskEvaluationHandler(recorder, httptest.NewRequest(http.MethodPost, "/v1/task-evaluations/execute", bytes.NewReader(payload)))
+	if recorder.Code != http.StatusOK {
+		t.Fatalf("status=%d body=%s", recorder.Code, recorder.Body.String())
+	}
+	var response capability.TaskEvaluationExecutionResponse
+	if err := json.Unmarshal(recorder.Body.Bytes(), &response); err != nil {
+		t.Fatal(err)
+	}
+	if len(response.Observations) != 2 || response.Observations[0].Result != capability.EvaluationSupported || response.Observations[1].Result != capability.EvaluationSupported {
+		t.Fatalf("unexpected observations: %+v", response.Observations)
+	}
+}

cmd/core-runtime/main.go

@@ -178,6 +178,61 @@ func main() {
 		w.Header().Set("Content-Type", "application/json")
 		_ = json.NewEncoder(w).Encode(session)
 	})
+	mux.HandleFunc("POST /v1/creator/development/proposals", func(w http.ResponseWriter, r *http.Request) {
+		session, ok := authenticateCreator(w, r)
+		if !ok {
+			return
+		}
+		var request struct {
+			Evidence []work.ExtensionEvidence      `json:"evidence"`
+			Proposal work.ExtensionProposalRequest `json:"proposal"`
+		}
+		decoder := json.NewDecoder(http.MaxBytesReader(w, r.Body, 64<<10))
+		decoder.DisallowUnknownFields()
+		if err := decoder.Decode(&request); err != nil {
+			http.Error(w, "invalid development proposal", http.StatusBadRequest)
+			return
+		}
+		proposal, err := workdomain.BuildExtensionProposal(request.Evidence, request.Proposal)
+		if err != nil {
+			http.Error(w, "development proposal rejected", http.StatusUnprocessableEntity)
+			return
+		}
+		proposal.RequestedByPrincipalID = string(session.PrincipalID)
+		if err := workRepository.SaveExtensionProposal(r.Context(), proposal); err != nil {
+			http.Error(w, "development proposal conflict", http.StatusConflict)
+			return
+		}
+		w.Header().Set("Content-Type", "application/json")
+		w.WriteHeader(http.StatusCreated)
+		_ = json.NewEncoder(w).Encode(proposal)
+	})
+	mux.HandleFunc("POST /v1/creator/development/scaffolds", func(w http.ResponseWriter, r *http.Request) {
+		session, ok := authenticateCreator(w, r)
+		if !ok {
+			return
+		}
+		var request work.DevelopmentScaffoldRequest
+		decoder := json.NewDecoder(http.MaxBytesReader(w, r.Body, 64<<10))
+		decoder.DisallowUnknownFields()
+		if err := decoder.Decode(&request); err != nil {
+			http.Error(w, "invalid development scaffold", http.StatusBadRequest)
+			return
+		}
+		scaffold, err := workdomain.BuildDevelopmentScaffold(request)
+		if err != nil {
+			http.Error(w, "development scaffold rejected", http.StatusUnprocessableEntity)
+			return
+		}
+		scaffold.RequestedByPrincipalID = string(session.PrincipalID)
+		if err := workRepository.SaveDevelopmentScaffold(r.Context(), scaffold); err != nil {
+			http.Error(w, "development scaffold conflict", http.StatusConflict)
+			return
+		}
+		w.Header().Set("Content-Type", "application/json")
+		w.WriteHeader(http.StatusCreated)
+		_ = json.NewEncoder(w).Encode(scaffold)
+	})
 	mux.HandleFunc("GET /v1/creator/focus", func(w http.ResponseWriter, r *http.Request) {
 		session, ok := authenticateCreator(w, r)
 		if !ok {
@@ -834,6 +889,20 @@ func main() {
 		w.Header().Set("Content-Type", "application/json")
 		_ = json.NewEncoder(w).Encode(binding)
 	})
+	mux.HandleFunc("GET /v1/cognitive-bindings/{id}/revisions/{revision}/snapshot", func(w http.ResponseWriter, r *http.Request) {
+		revision, err := strconv.ParseInt(r.PathValue("revision"), 10, 64)
+		if err != nil || revision < 1 {
+			http.Error(w, "invalid cognitive binding revision", http.StatusBadRequest)
+			return
+		}
+		snapshot, err := capabilityRepository.LoadCognitiveCandidate(r.Context(), capability.CapabilityBindingID(r.PathValue("id")), revision)
+		if err != nil {
+			http.Error(w, "cognitive binding snapshot not found", http.StatusNotFound)
+			return
+		}
+		w.Header().Set("Content-Type", "application/json")
+		_ = json.NewEncoder(w).Encode(snapshot)
+	})
 	mux.HandleFunc("POST /v1/cognitive-bindings/resolve", func(w http.ResponseWriter, r *http.Request) {
 		var requirement capability.CognitiveRequirement
 		decoder := json.NewDecoder(io.LimitReader(r.Body, 16*1024+1))

contracts/capability/task_evaluation_execution.go

@@ -0,0 +1,35 @@
+package capability
+
+import (
+	"git.cin.su/m/Assistant/contracts/authority"
+	"git.cin.su/m/Assistant/contracts/identity"
+)
+
+// TaskEvaluationCase carries one bounded prompt selected by the evaluator.
+// The prompt is an input artifact, not a model-produced fact.
+type TaskEvaluationCase struct {
+	CaseID              string
+	Prompt              string
+	EvidenceArtifactRef string
+}
+
+type TaskEvaluationExecutionRequest struct {
+	Profile            TaskEvaluationProfile
+	CapabilityID       CapabilityID
+	BindingID          CapabilityBindingID
+	BindingRevision    int64
+	ActorID            identity.ActorID
+	PrincipalID        identity.PrincipalID
+	ScopeID            authority.ScopeID
+	Cases              []TaskEvaluationCase
+	MaxOutputBytes     int64
+	EgressAcknowledged bool
+}
+
+type TaskEvaluationExecutionResponse struct {
+	ProfileID            TaskEvaluationProfileID
+	BindingID            CapabilityBindingID
+	BindingRevision      int64
+	Observations         []TaskCaseObservation
+	ObservedAtUnixMillis int64
+}

contracts/work/graph.go

@@ -46,6 +46,8 @@ type GraphNode struct {
 	TaskProfileID  capability.TaskEvaluationProfileID `json:"task_profile_id,omitempty"`
 	BindingID      capability.CapabilityBindingID     `json:"binding_id,omitempty"`
 	CaseIDs        []string                           `json:"case_ids,omitempty"`
+	TaskProfile    *capability.TaskEvaluationProfile  `json:"task_profile,omitempty"`
+	TaskCases      []capability.TaskEvaluationCase    `json:"task_cases,omitempty"`
 }
 
 type GraphEdge struct {
@@ -79,6 +81,11 @@ type TaskEvaluationGraphRequest struct {
 	ParentGraphRevision int64                            `json:"parent_graph_revision,omitempty"`
 	ParentGraphState    GraphState                       `json:"parent_graph_state,omitempty"`
 	TriggerEvidenceRef  string                           `json:"trigger_evidence_ref,omitempty"`
+	Cases               []capability.TaskEvaluationCase  `json:"cases,omitempty"`
+	BindingRevision     int64                            `json:"binding_revision,omitempty"`
+	ActorID             string                           `json:"actor_id,omitempty"`
+	PrincipalID         string                           `json:"principal_id,omitempty"`
+	ScopeID             string                           `json:"scope_id,omitempty"`
 }
 
 // TaskEvaluationEvidenceCallback is emitted by a specialist after it has

contracts/work/lease.go

@@ -3,7 +3,9 @@ package work
 import (
 	"time"
 
+	"git.cin.su/m/Assistant/contracts/authority"
 	"git.cin.su/m/Assistant/contracts/capability"
+	"git.cin.su/m/Assistant/contracts/identity"
 )
 
 type AgentLeaseID string
@@ -68,4 +70,17 @@ type AgentDispatchIntent struct {
 	TaskEvaluationProfileID capability.TaskEvaluationProfileID `json:"task_evaluation_profile_id,omitempty"`
 	TaskEvaluationBindingID capability.CapabilityBindingID     `json:"task_evaluation_binding_id,omitempty"`
 	TaskEvaluationCaseIDs   []string                           `json:"task_evaluation_case_ids,omitempty"`
+	TaskEvaluationProfile   *capability.TaskEvaluationProfile  `json:"task_evaluation_profile,omitempty"`
+	TaskEvaluationCases     []capability.TaskEvaluationCase    `json:"task_evaluation_cases,omitempty"`
+	TaskEvaluationExecution *TaskEvaluationDispatchContext     `json:"task_evaluation_execution,omitempty"`
+}
+
+type TaskEvaluationDispatchContext struct {
+	GraphID         string               `json:"graph_id"`
+	GraphRevision   int64                `json:"graph_revision"`
+	NodeID          GraphNodeID          `json:"node_id"`
+	BindingRevision int64                `json:"binding_revision"`
+	ActorID         identity.ActorID     `json:"actor_id"`
+	PrincipalID     identity.PrincipalID `json:"principal_id"`
+	ScopeID         authority.ScopeID    `json:"scope_id"`
 }

contracts/work/self_development.go

@@ -70,6 +70,7 @@ type ExtensionProposalRequest struct {
 // authority grant, implementation body or promotion decision.
 type ExtensionProposal struct {
 	ID                     string
+	RequestedByPrincipalID string
 	Stage                  ExtensionProposalStage
 	EvidenceRefs           []string
 	DeduplicatedSignalKeys []string
@@ -113,19 +114,20 @@ type DevelopmentScaffoldRequest struct {
 // DevelopmentScaffold is a provenance-linked task-packet candidate. It has
 // no executable instruction, credential, checkout handle or authority grant.
 type DevelopmentScaffold struct {
-	ID                  string
-	Stage               DevelopmentScaffoldStage
-	ProposalRef         string
-	BaseRepoRevision    string
-	WorktreeRef         string
-	TaskIntent          string
-	Modules             []string
-	AllowedPaths        []string
-	ForbiddenPaths      []string
-	RequiredTests       []string
-	ArtifactLineageRefs []string
-	ProtectedMainAccess string
-	ProductionAccess    string
-	SecretAccess        string
-	CreatedAtUnixMillis int64
+	ID                     string
+	RequestedByPrincipalID string
+	Stage                  DevelopmentScaffoldStage
+	ProposalRef            string
+	BaseRepoRevision       string
+	WorktreeRef            string
+	TaskIntent             string
+	Modules                []string
+	AllowedPaths           []string
+	ForbiddenPaths         []string
+	RequiredTests          []string
+	ArtifactLineageRefs    []string
+	ProtectedMainAccess    string
+	ProductionAccess       string
+	SecretAccess           string
+	CreatedAtUnixMillis    int64
 }

database/migrations/041_task_evaluation_payload.sql

@@ -0,0 +1,16 @@
+BEGIN;
+
+SET ROLE work_role;
+
+ALTER TABLE work.agent_dispatch_intents
+  ADD COLUMN IF NOT EXISTS task_evaluation_profile JSONB,
+  ADD COLUMN IF NOT EXISTS task_evaluation_cases JSONB NOT NULL DEFAULT '[]',
+  ADD COLUMN IF NOT EXISTS task_evaluation_execution JSONB;
+
+ALTER TABLE work.graph_nodes
+  ADD COLUMN IF NOT EXISTS task_evaluation_profile JSONB,
+  ADD COLUMN IF NOT EXISTS task_evaluation_cases JSONB NOT NULL DEFAULT '[]',
+  ADD COLUMN IF NOT EXISTS task_evaluation_execution JSONB;
+
+RESET ROLE;
+COMMIT;

database/migrations/042_agent_execution_recovery.sql

@@ -0,0 +1,15 @@
+BEGIN;
+
+SET ROLE work_role;
+
+ALTER TABLE work.agent_dispatch_queue
+  ADD COLUMN IF NOT EXISTS retry_limit INTEGER NOT NULL DEFAULT 3;
+
+ALTER TABLE work.agent_dispatch_queue
+  DROP CONSTRAINT IF EXISTS agent_dispatch_queue_retry_limit_check;
+
+ALTER TABLE work.agent_dispatch_queue
+  ADD CONSTRAINT agent_dispatch_queue_retry_limit_check CHECK (retry_limit > 0);
+
+RESET ROLE;
+COMMIT;

database/migrations/043_governed_development_candidates.sql

@@ -0,0 +1,45 @@
+BEGIN;
+
+SET ROLE work_role;
+
+CREATE TABLE IF NOT EXISTS work.extension_proposals (
+  proposal_id TEXT PRIMARY KEY,
+  requested_by_principal_id TEXT NOT NULL,
+  stage TEXT NOT NULL,
+  evidence_refs TEXT[] NOT NULL DEFAULT ARRAY[]::TEXT[],
+  deduplicated_signal_keys TEXT[] NOT NULL DEFAULT ARRAY[]::TEXT[],
+  desired_outcome TEXT NOT NULL,
+  smallest_change_layer TEXT NOT NULL,
+  affected_owners TEXT[] NOT NULL DEFAULT ARRAY[]::TEXT[],
+  affected_contracts TEXT[] NOT NULL DEFAULT ARRAY[]::TEXT[],
+  risk_tier TEXT NOT NULL,
+  evaluation_plan TEXT[] NOT NULL DEFAULT ARRAY[]::TEXT[],
+  alternatives TEXT[] NOT NULL DEFAULT ARRAY[]::TEXT[],
+  rollback_plan TEXT NOT NULL,
+  assumptions TEXT[] NOT NULL DEFAULT ARRAY[]::TEXT[],
+  created_at_unix_millis BIGINT NOT NULL,
+  CHECK (proposal_id <> ''), CHECK (requested_by_principal_id <> ''), CHECK (stage = 'PROPOSED'), CHECK (desired_outcome <> ''), CHECK (smallest_change_layer <> ''), CHECK (risk_tier <> ''), CHECK (rollback_plan <> ''), CHECK (created_at_unix_millis > 0)
+);
+
+CREATE TABLE IF NOT EXISTS work.development_scaffolds (
+  scaffold_id TEXT PRIMARY KEY,
+  requested_by_principal_id TEXT NOT NULL,
+  stage TEXT NOT NULL,
+  proposal_ref TEXT NOT NULL,
+  base_repo_revision TEXT NOT NULL,
+  worktree_ref TEXT NOT NULL,
+  task_intent TEXT NOT NULL,
+  modules TEXT[] NOT NULL DEFAULT ARRAY[]::TEXT[],
+  allowed_paths TEXT[] NOT NULL DEFAULT ARRAY[]::TEXT[],
+  forbidden_paths TEXT[] NOT NULL DEFAULT ARRAY[]::TEXT[],
+  required_tests TEXT[] NOT NULL DEFAULT ARRAY[]::TEXT[],
+  artifact_lineage_refs TEXT[] NOT NULL DEFAULT ARRAY[]::TEXT[],
+  protected_main_access TEXT NOT NULL,
+  production_access TEXT NOT NULL,
+  secret_access TEXT NOT NULL,
+  created_at_unix_millis BIGINT NOT NULL,
+  CHECK (scaffold_id <> ''), CHECK (requested_by_principal_id <> ''), CHECK (stage = 'SANDBOXED'), CHECK (proposal_ref <> ''), CHECK (base_repo_revision <> ''), CHECK (worktree_ref <> ''), CHECK (task_intent <> ''), CHECK (protected_main_access = 'DENIED'), CHECK (production_access = 'DENIED'), CHECK (secret_access = 'DENIED'), CHECK (created_at_unix_millis > 0)
+);
+
+RESET ROLE;
+COMMIT;

dev/ACTIVE_TASK.json

@@ -1,5 +1,5 @@
 {
-  "task_file": "dev/tasks/DEV-000211-task-evaluator-callback.json",
-  "task_id": "DEV-000211",
+  "task_file": "dev/tasks/DEV-000215-governed-development-control-plane.json",
+  "task_id": "DEV-000215",
   "task_revision": 1
 }

dev/tasks/DEV-000212-task-evaluator-invocation.json

@@ -0,0 +1,23 @@
+{
+  "task_id": "DEV-000212",
+  "task_revision": 1,
+  "architecture_revision": "ADR-0018",
+  "base_repo_revision": "dff6c91c8e08611d73231a04a1af67efeebed22b",
+  "risk_tier": "E",
+  "intent": "Execute bounded task-evaluation cases against an exact Capability binding through Cognitive Gateway and return typed observations for the Work Graph callback.",
+  "requirement_ids": ["actual model invocation", "exact binding evaluation", "bounded cases", "provider-neutral evidence", "unknown on provider failure"],
+  "allowed_change_scope": {"modules": ["capability", "core-runtime", "cognitive-worker"], "paths": ["contracts/capability/**", "adapters/postgres/capability_repository.go", "cmd/core-runtime/**", "cmd/cognitive-worker/**", "tests/model_qualification/**", "dev/ACTIVE_TASK.json", "dev/tasks/DEV-000212-task-evaluator-invocation.json"]},
+  "forbidden_change_scope": {"paths": ["architecture/**", "security/**", "deploy/**", "cmd/devctl/**", "database/**", "modules/identity/**"]},
+  "allowed_architecture_delta": {"new_cross_module_dependencies": 0, "new_canonical_owners": 0, "new_privileges": 0, "new_third_party_dependencies": 0, "new_database_owner_roles": 0},
+  "contracts": {"consume": ["TaskEvaluationProfile", "TaskCaseObservation", "Cognitive Gateway provider boundary", "Capability cognitive binding snapshot boundary"], "may_change": ["task evaluation execution request/response"]},
+  "semantic_owner": "capability owns evaluation meaning; cognitive-worker owns provider invocation adapter boundary",
+  "canonical_state": ["none; this task returns observations only and does not promote or persist activation"],
+  "state_transitions": ["execution request -> exact binding snapshot", "case -> provider invocation -> SUPPORTED or UNKNOWN observation", "all observations -> Work Graph callback input"],
+  "side_effects_and_privileges": ["provider calls only through existing cognitive adapter; no direct DB and no new secret access"],
+  "persistence_and_migrations": ["none; durable persistence remains callback/Core Capability owner"],
+  "failure_retry_restart": ["provider timeout/auth/unavailable maps to UNKNOWN observation with evidence reference; caller may retry as a new attempt", "partial case set is never returned as supported aggregate"],
+  "assumptions": ["specialist supplies case prompts and artifact references from the approved bounded profile", "quality scoring beyond bounded invocation is performed by a verifier or later evaluator and is not fabricated here"],
+  "acceptance_scenarios": ["exact binding snapshot is required", "all supplied cases are invoked", "successful non-empty response yields supported observation with latency", "provider failure yields unknown observation", "unknown is never silently converted to supported", "no provider or hardware field participates in scoring"],
+  "required_tests": ["go test", "go vet", "preflight", "check-diff", "check-architecture", "independent", "git diff --check", "CI", "production public health check"],
+  "terminal_gap_states": ["BLOCKED_BY_SPEC_GAP", "BLOCKED_BY_ARCHITECTURE_GAP", "BLOCKED_BY_MISSING_CAPABILITY"]
+}

dev/tasks/DEV-000213-worker-evaluator-link.json

@@ -0,0 +1,23 @@
+{
+  "task_id": "DEV-000213",
+  "task_revision": 1,
+  "architecture_revision": "ADR-0018",
+  "base_repo_revision": "a86d1994c3f48db86592eb87fb54533297e0671c",
+  "risk_tier": "E",
+  "intent": "Carry the complete bounded task-evaluation profile and case payload through durable Work Graph dispatch so agent-worker can invoke Cognitive Worker, aggregate observations, and return the existing Work Graph callback after restart-safe recovery.",
+  "requirement_ids": ["dispatch-to-evaluator link", "payload durability", "worker recovery", "observation aggregation", "callback integration"],
+  "allowed_change_scope": {"modules": ["work", "agent-worker"], "paths": ["contracts/work/**", "modules/work/**", "adapters/postgres/work_repository.go", "cmd/agent-worker/**", "cmd/work-graph-runtime/**", "database/migrations/041_task_evaluation_payload.sql", "tests/agent_execution/**", "tests/model_qualification/**", "dev/ACTIVE_TASK.json", "dev/tasks/DEV-000213-worker-evaluator-link.json"]},
+  "forbidden_change_scope": {"paths": ["architecture/**", "security/**", "deploy/**", "cmd/devctl/**", "modules/identity/**", "modules/capability/**"]},
+  "allowed_architecture_delta": {"new_cross_module_dependencies": 0, "new_canonical_owners": 0, "new_privileges": 0, "new_third_party_dependencies": 0, "new_database_owner_roles": 1},
+  "contracts": {"consume": ["TaskEvaluationExecutionRequest/Response", "Work Graph callback", "existing AgentExecutor and recovery contract"], "may_change": ["typed dispatch payload and worker evaluator executor"]},
+  "semantic_owner": "work owns dispatch lifecycle; capability owns evaluation evidence; cognitive-worker owns provider invocation",
+  "canonical_state": ["work dispatch payload is durable input; Capability remains evidence owner"],
+  "state_transitions": ["task graph node -> durable payload dispatch", "worker claim -> evaluator invocation", "response -> aggregate TaskEvaluation", "aggregate -> Work Graph evidence callback"],
+  "side_effects_and_privileges": ["HTTP calls to internal cognitive/core/work boundaries; no direct foreign DB and no new secret"],
+  "persistence_and_migrations": ["041 adds JSONB payload columns to work graph nodes and dispatch intents"],
+  "failure_retry_restart": ["payload is loaded after stale claim recovery; evaluator failure leaves dispatch retryable", "callback only follows a persisted aggregate; unknown remains unknown"],
+  "assumptions": ["Cognitive Worker endpoint is available as optional local execution path", "external bridge remains preferred for non-evaluation agent tasks"],
+  "acceptance_scenarios": ["profile/cases survive save-load", "task dispatch invokes evaluator with original prompt payload", "all observations aggregate deterministically", "callback receives matching binding/profile/artifact", "evaluator or callback failure does not complete dispatch", "legacy dispatch remains unchanged"],
+  "required_tests": ["go test", "go vet", "preflight", "check-diff", "check-architecture", "independent", "git diff --check", "migration/schema checks", "CI", "production public health check"],
+  "terminal_gap_states": ["BLOCKED_BY_SPEC_GAP", "BLOCKED_BY_ARCHITECTURE_GAP", "BLOCKED_BY_MISSING_CAPABILITY"]
+}

dev/tasks/DEV-000214-agent-execution-recovery.json

@@ -0,0 +1,23 @@
+{
+  "task_id": "DEV-000214",
+  "task_revision": 1,
+  "architecture_revision": "ADR-0018",
+  "base_repo_revision": "f9b9765100df02bead16280d2db9c1af478a4589",
+  "risk_tier": "E",
+  "intent": "Make Agent Execution recovery restart-safe: renew active leases with managed heartbeats, fence stale workers, cap retries, and requeue transient execution failures without losing durable dispatch state.",
+  "requirement_ids": ["durable heartbeat", "lease fencing", "bounded retry", "restart recovery", "transient failure requeue"],
+  "allowed_change_scope": {"modules": ["work", "agent-worker"], "paths": ["contracts/work/**", "modules/work/**", "adapters/postgres/work_repository.go", "cmd/agent-worker/**", "cmd/agent-canary/**", "database/migrations/042_agent_execution_recovery.sql", "tests/agent_execution/**", "dev/ACTIVE_TASK.json", "dev/tasks/DEV-000214-agent-execution-recovery.json"]},
+  "forbidden_change_scope": {"paths": ["architecture/**", "security/**", "deploy/**", "cmd/devctl/**", "modules/identity/**", "modules/capability/**", "LLM-local/**"]},
+  "allowed_architecture_delta": {"new_cross_module_dependencies": 0, "new_canonical_owners": 0, "new_privileges": 0, "new_third_party_dependencies": 0, "new_database_owner_roles": 1},
+  "contracts": {"consume": ["existing AgentExecutor", "existing lease/callback contract", "durable dispatch queue"], "may_change": ["WorkerStore retry/recovery port"]},
+  "semantic_owner": "work owns dispatch, lease, callback and retry lifecycle",
+  "canonical_state": ["work agent dispatch queue and lease tables remain canonical; heartbeat is durable evidence of liveness"],
+  "state_transitions": ["CLAIMED -> QUEUED on transient failure or stale recovery", "CLAIMED -> FAILED after retry limit", "ACTIVE lease -> EXPIRED before stale claim requeue", "heartbeat renews lease and callback sequence"],
+  "side_effects_and_privileges": ["work_role writes only work-owned queue and lease state; no external mutation"],
+  "persistence_and_migrations": ["042 adds bounded retry limit to dispatch queue"],
+  "failure_retry_restart": ["stale recovery expires the old lease before requeue", "transient execution failure uses durable delayed retry", "retry limit prevents hot-loop poison dispatch", "heartbeat failure cancels execution and leaves a retryable dispatch"],
+  "assumptions": ["operational heartbeat ticker is lifecycle-managed by the bounded worker call and durable state remains authoritative"],
+  "acceptance_scenarios": ["long execution renews lease and emits ordered heartbeats", "stale claim is fenced and requeued", "third failed attempt becomes FAILED", "waiting/error dispatch is not left CLAIMED", "legacy dispatch behavior remains compatible"],
+  "required_tests": ["go test", "go vet", "preflight", "check-diff", "check-architecture", "independent", "git diff --check", "migration/schema checks", "CI", "production public health check"],
+  "terminal_gap_states": ["BLOCKED_BY_SPEC_GAP", "BLOCKED_BY_ARCHITECTURE_GAP", "BLOCKED_BY_MISSING_CAPABILITY"]
+}

dev/tasks/DEV-000215-governed-development-control-plane.json

@@ -0,0 +1,23 @@
+{
+  "task_id": "DEV-000215",
+  "task_revision": 1,
+  "architecture_revision": "ADR-0018",
+  "base_repo_revision": "8d3e7f7cac236aa50919bd1cd854012dcc8500a5",
+  "risk_tier": "E",
+  "intent": "Expose a durable, authenticated control-plane boundary for governed self-development proposals and isolated scaffold candidates without executing source mutation, bypassing verification, or granting promotion authority.",
+  "requirement_ids": ["durable proposal intake", "isolated scaffold contract", "authenticated operator boundary", "no implicit promotion"],
+  "allowed_change_scope": {"modules": ["work", "core-runtime"], "paths": ["contracts/work/self_development.go", "modules/work/domain/**", "cmd/core-runtime/main.go", "adapters/postgres/work_repository.go", "database/migrations/043_governed_development_candidates.sql", "tests/semantic_evolution/**", "tests/work/**", "dev/ACTIVE_TASK.json", "dev/tasks/DEV-000215-governed-development-control-plane.json"]},
+  "forbidden_change_scope": {"paths": ["architecture/**", "security/**", "deploy/**", "cmd/devctl/**", "modules/identity/**", "modules/capability/**", "LLM-local/**"]},
+  "allowed_architecture_delta": {"new_cross_module_dependencies": 0, "new_canonical_owners": 0, "new_privileges": 0, "new_third_party_dependencies": 0, "new_database_owner_roles": 1},
+  "contracts": {"consume": ["ADR-0022 governed self-development boundary", "creator authentication", "work development gate"], "may_change": ["work-owned proposal/scaffold persistence and authenticated control-plane endpoints"]},
+  "semantic_owner": "work owns proposal, scaffold and development gate lineage",
+  "canonical_state": ["work-owned extension proposal and scaffold candidates are durable; source tree and production remain outside this task"],
+  "state_transitions": ["repeated evidence -> PROPOSED", "proposal -> SANDBOXED scaffold candidate", "gate remains explicit and cannot be promoted by these endpoints"],
+  "side_effects_and_privileges": ["authenticated creator session required; database writes stay within work owner; no checkout, source mutation, deployment or secret access"],
+  "persistence_and_migrations": ["043 adds durable work-owned proposal/scaffold candidate records"],
+  "failure_retry_restart": ["idempotent candidate IDs preserve lineage; duplicate IDs are rejected; no endpoint advances promotion stage"],
+  "assumptions": ["an independent executor and verifier remain separate future capabilities"],
+  "acceptance_scenarios": ["unauthenticated requests are rejected", "repeated evidence creates a durable proposal", "protected paths cannot create a scaffold", "valid scaffold is durable and remains SANDBOXED", "no promotion or source mutation occurs"],
+  "required_tests": ["go test", "go vet", "preflight", "check-diff", "check-architecture", "independent", "git diff --check", "migration/schema checks", "CI", "production public health check"],
+  "terminal_gap_states": ["BLOCKED_BY_SPEC_GAP", "BLOCKED_BY_ARCHITECTURE_GAP", "BLOCKED_BY_MISSING_CAPABILITY"]
+}

modules/work/application/agent_dispatch.go

@@ -2,6 +2,8 @@ package application
 
 import (
 	"context"
+	"fmt"
+	"sync"
 	"time"
 
 	"git.cin.su/m/Assistant/contracts/work"
@@ -33,16 +35,75 @@ func ExecuteAgentDispatch(ctx context.Context, store ports.ExecutionStore, execu
 	if err := store.AcceptAgentCallback(ctx, heartbeat); err != nil {
 		return work.AgentExecutionResult{}, err
 	}
-	result, err := executor.Execute(ctx, work.AgentExecutionRequest{Intent: intent, WorkerID: workerID, FencingToken: token, LeaseExpiresAt: lease.ExpiresAt})
+	executionCtx, cancel := context.WithCancel(ctx)
+	defer cancel()
+	var stateMu sync.Mutex
+	currentLease := lease
+	lastSequence := heartbeat.Sequence
+	heartbeatDone := make(chan struct{})
+	heartbeatStopped := make(chan struct{})
+	heartbeatFailure := make(chan error, 1)
+	interval := ttl / 3
+	if interval <= 0 {
+		return work.AgentExecutionResult{}, fmt.Errorf("invalid heartbeat interval")
+	}
+	go func() {
+		defer close(heartbeatStopped)
+		ticker := time.NewTicker(interval)
+		defer ticker.Stop()
+		for {
+			select {
+			case <-heartbeatDone:
+				return
+			case observedAt := <-ticker.C:
+				stateMu.Lock()
+				nextLease, renewErr := domain.RenewAgentLease(currentLease, workerID, token, observedAt, ttl)
+				if renewErr == nil {
+					renewErr = store.RenewAgentLease(executionCtx, nextLease, nextLease.ExpiresAt)
+				}
+				if renewErr == nil {
+					lastSequence++
+					heartbeat = work.AgentCallback{RunID: intent.RunID, WorkerID: workerID, FencingToken: token, Sequence: lastSequence, Kind: work.AgentCallbackHeartbeat, ObservedAt: observedAt}
+					renewErr = domain.ValidateAgentCallback(heartbeat, nextLease, lastSequence-1)
+				}
+				if renewErr == nil {
+					renewErr = store.AcceptAgentCallback(executionCtx, heartbeat)
+				}
+				if renewErr == nil {
+					currentLease = nextLease
+				}
+				stateMu.Unlock()
+				if renewErr != nil {
+					select {
+					case heartbeatFailure <- renewErr:
+					default:
+					}
+					cancel()
+					return
+				}
+			}
+		}
+	}()
+	result, err := executor.Execute(executionCtx, work.AgentExecutionRequest{Intent: intent, WorkerID: workerID, FencingToken: token, LeaseExpiresAt: lease.ExpiresAt})
+	close(heartbeatDone)
+	<-heartbeatStopped
+	select {
+	case heartbeatErr := <-heartbeatFailure:
+		return work.AgentExecutionResult{}, heartbeatErr
+	default:
+	}
 	if err != nil {
 		return work.AgentExecutionResult{}, err
 	}
+	stateMu.Lock()
+	lease = currentLease
+	stateMu.Unlock()
 	observedAt := time.UnixMilli(result.ObservedAtUnixMillis)
-	callback := work.AgentCallback{RunID: intent.RunID, WorkerID: workerID, FencingToken: token, Sequence: 2, Kind: work.AgentCallbackResult, ObservedAt: observedAt}
+	callback := work.AgentCallback{RunID: intent.RunID, WorkerID: workerID, FencingToken: token, Sequence: lastSequence + 1, Kind: work.AgentCallbackResult, ObservedAt: observedAt}
 	if result.State == work.AgentExecutionWaiting {
 		callback.Kind = work.AgentCallbackCheckpoint
 	}
-	if err := domain.ValidateAgentCallback(callback, lease, heartbeat.Sequence); err != nil {
+	if err := domain.ValidateAgentCallback(callback, lease, lastSequence); err != nil {
 		return work.AgentExecutionResult{}, err
 	}
 	if err := store.AcceptAgentCallback(ctx, callback); err != nil {

modules/work/application/agent_dispatch_test.go

@@ -18,6 +18,10 @@ func (s *bridgeStore) SaveAgentLease(_ context.Context, lease work.AgentLease) e
 	s.lease = lease
 	return nil
 }
+func (s *bridgeStore) RenewAgentLease(_ context.Context, lease work.AgentLease, _ time.Time) error {
+	s.lease = lease
+	return nil
+}
 func (s *bridgeStore) AcceptAgentCallback(_ context.Context, callback work.AgentCallback) error {
 	s.callbacks = append(s.callbacks, callback)
 	return nil
@@ -29,6 +33,17 @@ func (bridgeExecutor) Execute(context.Context, work.AgentExecutionRequest) (work
 	return work.AgentExecutionResult{State: work.AgentExecutionCompleted, Summary: "done", ObservedAtUnixMillis: 2}, nil
 }
 
+type slowBridgeExecutor struct{}
+
+func (slowBridgeExecutor) Execute(ctx context.Context, request work.AgentExecutionRequest) (work.AgentExecutionResult, error) {
+	select {
+	case <-time.After(45 * time.Millisecond):
+		return work.AgentExecutionResult{State: work.AgentExecutionCompleted, Summary: "done", ObservedAtUnixMillis: time.Now().UnixMilli()}, nil
+	case <-ctx.Done():
+		return work.AgentExecutionResult{}, ctx.Err()
+	}
+}
+
 func TestExecuteAgentDispatchPersistsLeaseAndBridgeCallbacks(t *testing.T) {
 	store := &bridgeStore{}
 	now := time.UnixMilli(1)
@@ -40,3 +55,20 @@ func TestExecuteAgentDispatchPersistsLeaseAndBridgeCallbacks(t *testing.T) {
 		t.Fatalf("callbacks=%+v", store.callbacks)
 	}
 }
+
+func TestExecuteAgentDispatchRenewsLeaseAndOrdersHeartbeats(t *testing.T) {
+	store := &bridgeStore{}
+	now := time.Now().UTC()
+	_, err := ExecuteAgentDispatch(context.Background(), store, slowBridgeExecutor{}, work.AgentDispatchIntent{DispatchID: "d-slow", IdempotencyKey: "i-slow", DelegationID: "del-slow", RunID: "run-slow", ImplementationID: "impl", ImplementationRevision: 1, SourceRevision: "source", WorktreeID: "tree", VerificationPlanRef: "verify", CreatedAtUnixMillis: now.UnixMilli()}, "worker", 1, now, 30*time.Millisecond)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(store.callbacks) < 3 {
+		t.Fatalf("expected heartbeat callbacks, got %d", len(store.callbacks))
+	}
+	for i, callback := range store.callbacks {
+		if callback.Sequence != uint64(i+1) {
+			t.Fatalf("callback sequence is not ordered: %#v", store.callbacks)
+		}
+	}
+}

modules/work/application/graph_runtime.go

@@ -5,6 +5,9 @@ import (
 	"errors"
 	"time"
 
+	"git.cin.su/m/Assistant/contracts/authority"
+	"git.cin.su/m/Assistant/contracts/capability"
+	"git.cin.su/m/Assistant/contracts/identity"
 	"git.cin.su/m/Assistant/contracts/work"
 	"git.cin.su/m/Assistant/modules/work/domain"
 	"git.cin.su/m/Assistant/modules/work/ports"
@@ -157,6 +160,13 @@ func AdmitAndScheduleTaskEvaluation(ctx context.Context, store ports.GraphStore,
 			intents[i].TaskEvaluationProfileID = node.TaskProfileID
 			intents[i].TaskEvaluationBindingID = node.BindingID
 			intents[i].TaskEvaluationCaseIDs = append([]string(nil), node.CaseIDs...)
+			if node.TaskProfile != nil {
+				profile := *node.TaskProfile
+				profile.RequiredCaseIDs = append([]string(nil), node.TaskProfile.RequiredCaseIDs...)
+				intents[i].TaskEvaluationProfile = &profile
+			}
+			intents[i].TaskEvaluationCases = append([]capability.TaskEvaluationCase(nil), node.TaskCases...)
+			intents[i].TaskEvaluationExecution = &work.TaskEvaluationDispatchContext{GraphID: graph.ID, GraphRevision: graph.Revision, NodeID: node.ID, BindingRevision: request.Plan.BindingRevision, ActorID: identity.ActorID(request.Plan.ActorID), PrincipalID: identity.PrincipalID(request.Plan.PrincipalID), ScopeID: authority.ScopeID(request.Plan.ScopeID)}
 			break
 		}
 	}

modules/work/application/task_evaluation_dispatch_test.go

@@ -33,6 +33,7 @@ func TestAdmitAndScheduleTaskEvaluationCarriesSpecialistContext(t *testing.T) {
 	request := TaskEvaluationScheduleRequest{
 		Plan: work.TaskEvaluationGraphRequest{
 			GraphID: "graph-task", Profile: capability.TaskEvaluationProfile{ID: "profile-general", Revision: 1, CapabilityID: "capability-chat", Stage: capability.TaskEvaluationGeneral, BenchmarkVersion: "general-v1", RequiredCaseIDs: []string{"case-a", "case-b"}, QualityWeightMillis: 600, ReliabilityWeightMillis: 300, LatencyWeightMillis: 100},
+			Cases:      []capability.TaskEvaluationCase{{CaseID: "case-a", Prompt: "one", EvidenceArtifactRef: "artifact-a"}, {CaseID: "case-b", Prompt: "two", EvidenceArtifactRef: "artifact-b"}},
 			BindingIDs: []capability.CapabilityBindingID{"binding-a"}, DispatchIDs: []string{"dispatch-a"}, IdempotencyPrefix: "eval", Budget: work.GraphBudget{MaxParallel: 1, MaxAttempts: 2},
 		},
 		Intents: []work.AgentDispatchIntent{{DispatchID: "dispatch-a", IdempotencyKey: "idem-a", DelegationID: "delegation-a", RunID: "run-a", ImplementationID: "impl", ImplementationRevision: 1, SourceRevision: "source", WorktreeID: "tree", VerificationPlanRef: "verify", CreatedAtUnixMillis: 1}},

modules/work/application/worker.go

@@ -15,6 +15,12 @@ type WorkerCycleResult struct {
 	Idle            bool
 }
 
+const transientDispatchRetryDelay = time.Second
+
+func retryClaimedDispatch(ctx context.Context, store ports.WorkerStore, dispatchID, workerID string, now time.Time) error {
+	return store.RetryDispatch(ctx, dispatchID, workerID, now.UnixMilli(), transientDispatchRetryDelay)
+}
+
 // RecoverOnlyWorkerCycle keeps durable recovery alive while the real executor
 // capability is absent. It intentionally does not claim a dispatch: a missing
 // executor must never be represented as successful work.
@@ -37,11 +43,11 @@ func ExecuteWorkerCycle(ctx context.Context, store ports.WorkerStore, workerID s
 	}
 	intent, err := store.LoadDispatchIntent(ctx, item.DispatchID)
 	if err != nil {
-		_ = store.CompleteDispatch(ctx, item.DispatchID, workerID, work.AgentDispatchFailed, now.UnixMilli())
+		_ = retryClaimedDispatch(ctx, store, item.DispatchID, workerID, now)
 		return WorkerCycleResult{RecoveredClaims: recovered, DispatchID: item.DispatchID}, err
 	}
 	if _, err := ExecuteDryRunDispatch(ctx, store, intent, workerID, token, now, leaseTTL); err != nil {
-		_ = store.CompleteDispatch(ctx, item.DispatchID, workerID, work.AgentDispatchFailed, now.UnixMilli())
+		_ = retryClaimedDispatch(ctx, store, item.DispatchID, workerID, now)
 		return WorkerCycleResult{RecoveredClaims: recovered, DispatchID: item.DispatchID}, err
 	}
 	if err := store.CompleteDispatch(ctx, item.DispatchID, workerID, work.AgentDispatchCompleted, now.UnixMilli()); err != nil {
@@ -64,15 +70,18 @@ func ExecuteWorkerCycleWithExecutor(ctx context.Context, store ports.WorkerStore
 	}
 	intent, err := store.LoadDispatchIntent(ctx, item.DispatchID)
 	if err != nil {
-		_ = store.CompleteDispatch(ctx, item.DispatchID, workerID, work.AgentDispatchFailed, now.UnixMilli())
+		_ = retryClaimedDispatch(ctx, store, item.DispatchID, workerID, now)
 		return WorkerCycleResult{RecoveredClaims: recovered, DispatchID: item.DispatchID}, err
 	}
 	result, err := ExecuteAgentDispatch(ctx, store, executor, intent, workerID, token, now, leaseTTL)
 	if err != nil {
-		_ = store.CompleteDispatch(ctx, item.DispatchID, workerID, work.AgentDispatchFailed, now.UnixMilli())
+		_ = retryClaimedDispatch(ctx, store, item.DispatchID, workerID, now)
 		return WorkerCycleResult{RecoveredClaims: recovered, DispatchID: item.DispatchID}, err
 	}
 	if result.State != work.AgentExecutionCompleted {
+		if err := retryClaimedDispatch(ctx, store, item.DispatchID, workerID, now); err != nil {
+			return WorkerCycleResult{RecoveredClaims: recovered, DispatchID: item.DispatchID}, err
+		}
 		return WorkerCycleResult{RecoveredClaims: recovered, DispatchID: item.DispatchID}, nil
 	}
 	if err := store.CompleteDispatch(ctx, item.DispatchID, workerID, work.AgentDispatchCompleted, now.UnixMilli()); err != nil {

modules/work/application/worker_test.go

@@ -26,10 +26,16 @@ func (s *recoveryOnlyStore) LoadDispatchIntent(context.Context, string) (work.Ag
 func (s *recoveryOnlyStore) CompleteDispatch(context.Context, string, string, work.AgentDispatchQueueState, int64) error {
 	return nil
 }
+func (s *recoveryOnlyStore) RetryDispatch(context.Context, string, string, int64, time.Duration) error {
+	return nil
+}
 func (s *recoveryOnlyStore) SaveDispatchIntent(context.Context, work.AgentDispatchIntent) error {
 	return nil
 }
 func (s *recoveryOnlyStore) SaveAgentLease(context.Context, work.AgentLease) error { return nil }
+func (s *recoveryOnlyStore) RenewAgentLease(context.Context, work.AgentLease, time.Time) error {
+	return nil
+}
 func (s *recoveryOnlyStore) AcceptAgentCallback(context.Context, work.AgentCallback) error {
 	return nil
 }

modules/work/domain/task_evaluation_graph.go

@@ -20,6 +20,24 @@ func BuildTaskEvaluationGraph(request work.TaskEvaluationGraphRequest) (work.Wor
 	if err := request.Profile.Validate(); err != nil {
 		return work.WorkGraph{}, ErrInvalidTaskEvaluationGraph
 	}
+	if len(request.Cases) != len(request.Profile.RequiredCaseIDs) {
+		return work.WorkGraph{}, ErrInvalidTaskEvaluationGraph
+	}
+	seenCases := make(map[string]struct{}, len(request.Cases))
+	for _, item := range request.Cases {
+		if item.CaseID == "" || item.Prompt == "" || item.EvidenceArtifactRef == "" {
+			return work.WorkGraph{}, ErrInvalidTaskEvaluationGraph
+		}
+		if _, exists := seenCases[item.CaseID]; exists {
+			return work.WorkGraph{}, ErrInvalidTaskEvaluationGraph
+		}
+		seenCases[item.CaseID] = struct{}{}
+	}
+	for _, requiredID := range request.Profile.RequiredCaseIDs {
+		if _, exists := seenCases[requiredID]; !exists {
+			return work.WorkGraph{}, ErrInvalidTaskEvaluationGraph
+		}
+	}
 	if request.Profile.Stage == capability.TaskEvaluationGeneral {
 		if request.ParentGraphID != "" || request.ParentGraphRevision != 0 || request.ParentGraphState != "" || request.TriggerEvidenceRef != "" {
 			return work.WorkGraph{}, ErrInvalidTaskEvaluationGraph
@@ -56,7 +74,15 @@ func BuildTaskEvaluationGraph(request work.TaskEvaluationGraphRequest) (work.Wor
 			TaskProfileID:  request.Profile.ID,
 			BindingID:      bindingID,
 			CaseIDs:        append([]string(nil), request.Profile.RequiredCaseIDs...),
+			TaskProfile:    cloneTaskEvaluationProfile(request.Profile),
+			TaskCases:      append([]capability.TaskEvaluationCase(nil), request.Cases...),
 		})
 	}
 	return work.WorkGraph{ID: request.GraphID, Revision: 1, State: work.GraphDraft, Nodes: nodes, Budget: request.Budget, ParentGraphID: request.ParentGraphID, ParentGraphRevision: request.ParentGraphRevision, TriggerEvidenceRef: request.TriggerEvidenceRef}, nil
 }
+
+func cloneTaskEvaluationProfile(value capability.TaskEvaluationProfile) *capability.TaskEvaluationProfile {
+	copyValue := value
+	copyValue.RequiredCaseIDs = append([]string(nil), value.RequiredCaseIDs...)
+	return &copyValue
+}

modules/work/domain/task_evaluation_graph_test.go

@@ -9,7 +9,7 @@ import (
 
 func evaluationGraphRequest(stage capability.TaskEvaluationProfileStage) work.TaskEvaluationGraphRequest {
 	profile := capability.TaskEvaluationProfile{ID: "profile-1", Revision: 1, CapabilityID: "capability-1", Stage: stage, BenchmarkVersion: "general-v1", RequiredCaseIDs: []string{"case-a", "case-b"}, QualityWeightMillis: 600, ReliabilityWeightMillis: 300, LatencyWeightMillis: 100}
-	request := work.TaskEvaluationGraphRequest{GraphID: "graph-1", Profile: profile, BindingIDs: []capability.CapabilityBindingID{"binding-a", "binding-b"}, DispatchIDs: []string{"dispatch-a", "dispatch-b"}, IdempotencyPrefix: "task-eval", Budget: work.GraphBudget{MaxParallel: 2, MaxAttempts: 2}}
+	request := work.TaskEvaluationGraphRequest{GraphID: "graph-1", Profile: profile, BindingIDs: []capability.CapabilityBindingID{"binding-a", "binding-b"}, DispatchIDs: []string{"dispatch-a", "dispatch-b"}, IdempotencyPrefix: "task-eval", Budget: work.GraphBudget{MaxParallel: 2, MaxAttempts: 2}, Cases: []capability.TaskEvaluationCase{{CaseID: "case-a", Prompt: "short answer", EvidenceArtifactRef: "artifact-a"}, {CaseID: "case-b", Prompt: "long answer", EvidenceArtifactRef: "artifact-b"}}}
 	if stage == capability.TaskEvaluationAdditional {
 		request.Profile.ParentProfileID = "profile-general"
 		request.Profile.TriggerEvidenceRef = "artifact:unresolved-1"

modules/work/ports/execution.go

@@ -2,6 +2,7 @@ package ports
 
 import (
 	"context"
+	"time"
 
 	"git.cin.su/m/Assistant/contracts/work"
 )
@@ -13,5 +14,6 @@ type AgentExecutor interface {
 type ExecutionStore interface {
 	SaveDispatchIntent(context.Context, work.AgentDispatchIntent) error
 	SaveAgentLease(context.Context, work.AgentLease) error
+	RenewAgentLease(context.Context, work.AgentLease, time.Time) error
 	AcceptAgentCallback(context.Context, work.AgentCallback) error
 }

modules/work/ports/worker.go

@@ -3,6 +3,7 @@ package ports
 import (
 	"context"
 	"errors"
+	"time"
 
 	"git.cin.su/m/Assistant/contracts/work"
 )
@@ -14,5 +15,6 @@ type WorkerStore interface {
 	LoadDispatchIntent(context.Context, string) (work.AgentDispatchIntent, error)
 	ClaimNextDispatch(context.Context, string, int64) (work.AgentDispatchQueueItem, error)
 	CompleteDispatch(context.Context, string, string, work.AgentDispatchQueueState, int64) error
+	RetryDispatch(context.Context, string, string, int64, time.Duration) error
 	RecoverStaleClaims(context.Context, int64, int64) (int64, error)
 }

tests/agent_execution/canary_test.go

@@ -15,7 +15,8 @@ func (s *canaryStore) SaveDispatchIntent(context.Context, work.AgentDispatchInte
 	s.writes++
 	return nil
 }
-func (s *canaryStore) SaveAgentLease(context.Context, work.AgentLease) error { s.writes++; return nil }
+func (s *canaryStore) SaveAgentLease(context.Context, work.AgentLease) error             { s.writes++; return nil }
+func (s *canaryStore) RenewAgentLease(context.Context, work.AgentLease, time.Time) error { return nil }
 func (s *canaryStore) AcceptAgentCallback(context.Context, work.AgentCallback) error {
 	s.writes++
 	return nil

tests/agent_execution/dry_run_orchestration_test.go

@@ -21,6 +21,9 @@ func (s *recordingExecutionStore) SaveAgentLease(context.Context, work.AgentLeas
 	s.operations = append(s.operations, "lease")
 	return nil
 }
+func (s *recordingExecutionStore) RenewAgentLease(context.Context, work.AgentLease, time.Time) error {
+	return nil
+}
 func (s *recordingExecutionStore) AcceptAgentCallback(context.Context, work.AgentCallback) error {
 	s.operations = append(s.operations, "callback")
 	return nil

tests/agent_execution/recovery_schema_test.go

@@ -0,0 +1,20 @@
+package agent_execution_test
+
+import (
+	"os"
+	"strings"
+	"testing"
+)
+
+func TestRecoveryMigrationDefinesBoundedRetryState(t *testing.T) {
+	payload, err := os.ReadFile("../../database/migrations/042_agent_execution_recovery.sql")
+	if err != nil {
+		t.Fatal(err)
+	}
+	source := strings.ToLower(string(payload))
+	for _, fragment := range []string{"set role work_role", "retry_limit integer not null default 3", "retry_limit > 0"} {
+		if !strings.Contains(source, fragment) {
+			t.Fatalf("migration is missing %q", fragment)
+		}
+	}
+}

tests/semantic_evolution/governed_development_schema_test.go

@@ -0,0 +1,20 @@
+package semantic_evolution_test
+
+import (
+	"os"
+	"strings"
+	"testing"
+)
+
+func TestGovernedDevelopmentCandidateMigrationIsWorkOwnedAndSandboxed(t *testing.T) {
+	payload, err := os.ReadFile("../../database/migrations/043_governed_development_candidates.sql")
+	if err != nil {
+		t.Fatal(err)
+	}
+	source := strings.ToLower(string(payload))
+	for _, fragment := range []string{"set role work_role", "create table if not exists work.extension_proposals", "create table if not exists work.development_scaffolds", "stage = 'sandboxed'", "protected_main_access = 'denied'", "production_access = 'denied'", "secret_access = 'denied'"} {
+		if !strings.Contains(source, fragment) {
+			t.Fatalf("migration is missing %q", fragment)
+		}
+	}
+}