adapters/postgres/work_repository.go

@@ -18,10 +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) {
@@ -104,6 +105,28 @@ 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 {

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 {

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/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-000214-agent-execution-recovery.json",
-  "task_id": "DEV-000214",
+  "task_file": "dev/tasks/DEV-000215-governed-development-control-plane.json",
+  "task_id": "DEV-000215",
   "task_revision": 1
 }

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"]
+}

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)
+		}
+	}
+}