diff --git a/docs/internal/runner.md b/docs/internal/runner.md
index 0e12629..03ab213 100644
--- a/docs/internal/runner.md
+++ b/docs/internal/runner.md
@@ -43,9 +43,8 @@ hash. It retains its early request-ID check before direct-session
 normalization. Referenced message content and static template syntax were
 captured when the engine was built.
 
-`InspectPrompt` selects captured metadata through an optional repository
-capability, falling back to the full definition and existing hash resolution
-for internal repositories without it. It returns owned metadata without
+`InspectPrompt` selects captured metadata directly from the repository. It
+returns owned metadata without
 rendering templates or touching profile, artifact, schema, renderer, validator,
 admission, or model collaborators. The root
 [`Engine.InspectPrompt`](../../engine.go) GoDoc owns the public operation's
@@ -57,8 +56,7 @@ snapshot by the selected prompt ID. The analyzer receives only
 those identity fields rather than an execution definition. It analyzes the
 snapshot with the supplied caller variables and normalized direct-session
 bypass; it does not resolve target readiness or enter the preparation
-pipeline. Missing snapshot capability is a prompt-load failure rather than a
-source fallback. The root
+pipeline. An unavailable captured snapshot is a prompt-load failure. The root
 [`Engine.InspectRequirements`](../../requirements.go) GoDoc owns the public
 operation's exact contract.
 
diff --git a/docs/roadmap/implementation.md b/docs/roadmap/implementation.md
index e2cd351..3921ba5 100644
--- a/docs/roadmap/implementation.md
+++ b/docs/roadmap/implementation.md
@@ -119,6 +119,11 @@ presence, prepared-payload freezing, session, and structured-dispatch assertions
 
 ## Stage 3: Require Captured Repository Operations
 
+**Completed:** Repository interfaces require captured definitions, metadata,
+requirements, and profile identity; the alternate lookups and hash wrapper
+were removed. Go 1.27.3 `go build ./...` passed with the real configuration
+snapshot. Use-case test fixture compilation is deferred to the next stage.
+
 **Finding:** 3. **Files:** `internal/promptdef/repository.go`, `internal/profile/repository.go`,
 `internal/usecase/{runner,prompt_inspection,profile_inspection,requirements_inspection}.go`,
 `internal/configuration/prompts.go` and `targets.go`.
diff --git a/internal/configuration/prompts.go b/internal/configuration/prompts.go
index f5fe9dd..392b10d 100644
--- a/internal/configuration/prompts.go
+++ b/internal/configuration/prompts.go
@@ -329,12 +329,6 @@ func (state *loaded) GetPromptInspection(ctx context.Context, id string) (*domai
 	return ownPromptInspection(entry.inspection), nil
 }
 
-// GetPromptDefinition implements the runner's prompt lookup boundary.
-func (state *loaded) GetPromptDefinition(ctx context.Context, id string) (*domain.PromptDefinition, error) {
-	definition, _, err := state.GetPromptSnapshot(ctx, id)
-	return definition, err
-}
-
 // GetCompiledTemplates returns construction-time parses for one prompt ID.
 func (state *loaded) GetCompiledTemplates(id string) (prompt.CompiledTemplates, bool) {
 	if state == nil {
diff --git a/internal/profile/repository.go b/internal/profile/repository.go
index 0d535a2..cfd6a59 100644
--- a/internal/profile/repository.go
+++ b/internal/profile/repository.go
@@ -13,4 +13,5 @@ var ErrProfileNotFound = errors.New("execution profile not found")
 // Repository selects execution profiles from a captured index.
 type Repository interface {
 	GetProfile(ctx context.Context, id string) (*domain.ExecutionProfile, error)
+	GetProfileIdentity(ctx context.Context, id string) (string, error)
 }
diff --git a/internal/promptdef/repository.go b/internal/promptdef/repository.go
index 44d8a71..812d7a5 100644
--- a/internal/promptdef/repository.go
+++ b/internal/promptdef/repository.go
@@ -5,6 +5,7 @@ import (
 	"errors"
 
 	"go.maximumdirect.net/promptkit/internal/domain"
+	"go.maximumdirect.net/promptkit/internal/prompt"
 )
 
 // ErrPromptDefinitionNotFound identifies an absent captured prompt definition.
@@ -12,5 +13,7 @@ var ErrPromptDefinitionNotFound = errors.New("prompt definition not found")
 
 // Repository selects prompt definitions from a captured index.
 type Repository interface {
-	GetPromptDefinition(ctx context.Context, id string) (*domain.PromptDefinition, error)
+	GetPromptSnapshot(ctx context.Context, id string) (*domain.PromptDefinition, string, error)
+	GetPromptInspection(ctx context.Context, id string) (*domain.PromptInspection, error)
+	GetRequirementSnapshot(id string) (prompt.RequirementSnapshot, bool)
 }
diff --git a/internal/usecase/profile_inspection.go b/internal/usecase/profile_inspection.go
index 1b1dee9..e9bddc3 100644
--- a/internal/usecase/profile_inspection.go
+++ b/internal/usecase/profile_inspection.go
@@ -15,10 +15,6 @@ type resolvedProfileSelection struct {
 	profile *domain.ExecutionProfile
 }
 
-type profileIdentityRepository interface {
-	GetProfileIdentity(context.Context, string) (string, error)
-}
-
 func (r *Runner) profileLookupID(profileID string) (string, error) {
 	if strings.TrimSpace(profileID) == "" {
 		return "", fmt.Errorf("%w: profile id is required", ErrInvalidRequest)
@@ -61,18 +57,11 @@ func (r *Runner) resolveProfileIdentity(ctx context.Context, profileID string) (
 	if err != nil {
 		return "", err
 	}
-	if indexed, ok := r.profiles.(profileIdentityRepository); ok {
-		identity, err := indexed.GetProfileIdentity(ctx, lookupID)
-		if err != nil {
-			return "", profileLookupError(err)
-		}
-		return identity, nil
-	}
-	selection, err := r.resolveProfileSelection(ctx, lookupID)
+	identity, err := r.profiles.GetProfileIdentity(ctx, lookupID)
 	if err != nil {
-		return "", err
+		return "", profileLookupError(err)
 	}
-	return selection.id, nil
+	return identity, nil
 }
 
 func normalizeResolvedExecutionTarget(target domain.ExecutionTarget) (domain.ExecutionTarget, error) {
diff --git a/internal/usecase/prompt_inspection.go b/internal/usecase/prompt_inspection.go
index 47477ee..6019306 100644
--- a/internal/usecase/prompt_inspection.go
+++ b/internal/usecase/prompt_inspection.go
@@ -13,10 +13,6 @@ type resolvedPromptDefinition struct {
 	hash       string
 }
 
-type promptInspectionRepository interface {
-	GetPromptInspection(context.Context, string) (*domain.PromptInspection, error)
-}
-
 func (r *Runner) resolvePromptDefinition(ctx context.Context, promptID string) (*resolvedPromptDefinition, error) {
 	if strings.TrimSpace(promptID) == "" {
 		return nil, fmt.Errorf("%w: prompt id is required", ErrInvalidRequest)
@@ -25,16 +21,7 @@ func (r *Runner) resolvePromptDefinition(ctx context.Context, promptID string) (
 		return nil, fmt.Errorf("%w: prompt repository is not configured", ErrPromptLoad)
 	}
 
-	var definition *domain.PromptDefinition
-	var hash string
-	var err error
-	if indexed, ok := r.promptDefs.(interface {
-		GetPromptSnapshot(context.Context, string) (*domain.PromptDefinition, string, error)
-	}); ok {
-		definition, hash, err = indexed.GetPromptSnapshot(ctx, promptID)
-	} else {
-		definition, err = r.promptDefs.GetPromptDefinition(ctx, promptID)
-	}
+	definition, hash, err := r.promptDefs.GetPromptSnapshot(ctx, promptID)
 	if err != nil {
 		return nil, promptLookupError(err)
 	}
@@ -42,12 +29,6 @@ func (r *Runner) resolvePromptDefinition(ctx context.Context, promptID string) (
 		return nil, fmt.Errorf("%w: prompt repository returned nil definition", ErrPromptLoad)
 	}
 
-	if hash == "" {
-		hash, err = hashPromptDefinition(definition)
-		if err != nil {
-			return nil, fmt.Errorf("%w: failed to hash prompt definition: %v", ErrPromptLoad, err)
-		}
-	}
 	return &resolvedPromptDefinition{definition: definition, hash: hash}, nil
 }
 
@@ -58,29 +39,14 @@ func (r *Runner) resolvePromptInspection(ctx context.Context, promptID string) (
 	if r == nil || r.promptDefs == nil {
 		return nil, fmt.Errorf("%w: prompt repository is not configured", ErrPromptLoad)
 	}
-	if indexed, ok := r.promptDefs.(promptInspectionRepository); ok {
-		inspection, err := indexed.GetPromptInspection(ctx, promptID)
-		if err != nil {
-			return nil, promptLookupError(err)
-		}
-		if inspection == nil {
-			return nil, fmt.Errorf("%w: prompt repository returned nil inspection", ErrPromptLoad)
-		}
-		return inspection, nil
-	}
-
-	selection, err := r.resolvePromptDefinition(ctx, promptID)
+	inspection, err := r.promptDefs.GetPromptInspection(ctx, promptID)
 	if err != nil {
-		return nil, err
+		return nil, promptLookupError(err)
 	}
-	definition := selection.definition
-	return &domain.PromptInspection{
-		PromptID:         definition.ID,
-		PromptHash:       selection.hash,
-		DefaultProfileID: definition.DefaultProfile,
-		Inputs:           append([]domain.PromptInput(nil), definition.Inputs...),
-		OutputContract:   definition.Validation,
-	}, nil
+	if inspection == nil {
+		return nil, fmt.Errorf("%w: prompt repository returned nil inspection", ErrPromptLoad)
+	}
+	return inspection, nil
 }
 
 // InspectPrompt resolves one explicit prompt without execution work.
diff --git a/internal/usecase/requirements_inspection.go b/internal/usecase/requirements_inspection.go
index a33eee7..d9a8d0f 100644
--- a/internal/usecase/requirements_inspection.go
+++ b/internal/usecase/requirements_inspection.go
@@ -18,10 +18,6 @@ type RequirementInspectionRequest struct {
 	SessionID string
 }
 
-type requirementSnapshotRepository interface {
-	GetRequirementSnapshot(id string) (prompt.RequirementSnapshot, bool)
-}
-
 // InspectRequirements discovers prompt inputs and caller variables without
 // loading artifacts or performing execution preparation.
 func (r *Runner) InspectRequirements(
@@ -61,11 +57,7 @@ func (r *Runner) InspectRequirements(
 		return nil, &OperationError{Category: ErrPromptLoad, Cause: err}
 	}
 
-	repository, ok := r.promptDefs.(requirementSnapshotRepository)
-	if !ok {
-		return nil, fmt.Errorf("%w: prompt repository does not provide captured requirement snapshots", ErrPromptLoad)
-	}
-	snapshot, ok := repository.GetRequirementSnapshot(selection.PromptID)
+	snapshot, ok := r.promptDefs.GetRequirementSnapshot(selection.PromptID)
 	if !ok {
 		return nil, fmt.Errorf("%w: captured requirement snapshot is unavailable", ErrPromptLoad)
 	}
diff --git a/internal/usecase/runner.go b/internal/usecase/runner.go
index 487388a..7ba4438 100644
--- a/internal/usecase/runner.go
+++ b/internal/usecase/runner.go
@@ -707,7 +707,3 @@ func buildOutputArtifact(content string, format domain.OutputFormat) domain.Arti
 		Hash:        hex.EncodeToString(hash[:]),
 	}
 }
-
-func hashPromptDefinition(def *domain.PromptDefinition) (string, error) {
-	return promptdef.HashDefinition(def)
-}