fix: eliminate empty tier labels in selection metrics recording

Signed-off-by: Senan Zedan <szedan@redhat.com>

Author: szedan-rh

docs/superpowers/plans/2026-03-29-algorithm-tier-classification.md

@@ -7,7 +7,7 @@ license = "Apache-2.0"
 
 [lib]
 name = "ml_semantic_router"
-crate-type = ["cdylib", "rlib"]
+crate-type = ["staticlib", "cdylib", "rlib"]
 
 [dependencies]
 # Linfa ML framework - inference only (training done in Python)

docs/superpowers/specs/2026-03-29-algorithm-tier-classification-design.md

@@ -116,8 +116,7 @@ func (r *OpenAIRouter) selectModelFromCandidates(modelRefs []config.ModelRef, de
 			modelRefs[i].LoRAName == result.SelectedModel {
 			logging.Infof("[ModelSelection] Selected %s (method=%s, score=%.4f, confidence=%.2f): %s",
 				result.SelectedModel, method, result.Score, result.Confidence, result.Reasoning)
-			// Record selection metrics
-			selection.RecordSelection(string(method), decisionName, result.SelectedModel, result.Score)
+			selection.RecordSelection(string(method), decisionName, result.SelectedModel, result.Tier, result.Score)
 			return &modelRefs[i], string(method)
 		}
 	}

ml-binding/Cargo.toml

@@ -46,7 +46,7 @@ func collectConfiguredAlgorithmMethods(cfg *config.RouterConfig) []selection.Sel
 	seen := make(map[string]bool)
 	var methods []selection.SelectionMethod
 
-	for _, decision := range cfg.IntelligentRouting.Decisions {
+	for _, decision := range cfg.Decisions {
 		if decision.Algorithm == nil || decision.Algorithm.Type == "" {
 			continue
 		}

src/semantic-router/pkg/extproc/req_filter_classification.go

@@ -391,26 +391,6 @@ func (a *AutoMixSelector) UpdateFeedback(ctx context.Context, feedback *Feedback
 	return nil
 }
 
-// Tier returns the production readiness tier
-func (a *AutoMixSelector) Tier() AlgorithmTier {
-	return TierExperimental
-}
-
-// ExternalDependencies returns external dependencies for AutoMix
-func (a *AutoMixSelector) ExternalDependencies() []Dependency {
-	deps := []Dependency{}
-	if a.config.EnableSelfVerification && a.config.VerifierServerURL != "" {
-		deps = append(deps, Dependency{
-			Name:        "AutoMix Verifier Server",
-			Type:        DependencyExternalService,
-			Description: "LLM-based entailment verification for self-verification (arXiv:2310.12963)",
-			HealthURL:   a.config.VerifierServerURL + "/health",
-			Required:    true,
-		})
-	}
-	return deps
-}
-
 // computeExpectedValue calculates the expected value of using a model
 // V(model) = R(model) + γ * E[V(s') | escalation possible]
 func (a *AutoMixSelector) computeExpectedValue(model string, selCtx *SelectionContext) float64 {

src/semantic-router/pkg/extproc/router_selection.go

@@ -767,13 +767,3 @@ func (e *EloSelector) GetLeaderboard(category string) []*ModelRating {
 
 	return ratings
 }
-
-// Tier returns the production readiness tier
-func (e *EloSelector) Tier() AlgorithmTier {
-	return TierSupported
-}
-
-// ExternalDependencies returns external dependencies (none for Elo)
-func (e *EloSelector) ExternalDependencies() []Dependency {
-	return []Dependency{}
-}

src/semantic-router/pkg/selection/automix.go

@@ -389,25 +389,6 @@ func (g *GMTRouterSelector) UpdateFeedback(ctx context.Context, feedback *Feedba
 	return nil
 }
 
-// Tier returns the production readiness tier
-func (g *GMTRouterSelector) Tier() AlgorithmTier {
-	return TierExperimental
-}
-
-// ExternalDependencies returns external dependencies for GMTRouter
-func (g *GMTRouterSelector) ExternalDependencies() []Dependency {
-	deps := []Dependency{}
-	if g.config.StoragePath != "" {
-		deps = append(deps, Dependency{
-			Name:        "Pre-trained graph model",
-			Type:        DependencyPretrainedModel,
-			Description: "Heterogeneous graph model weights (arXiv:2511.08590)",
-			Required:    false,
-		})
-	}
-	return deps
-}
-
 // addInteraction adds an interaction record to user state
 func (g *GMTRouterSelector) addInteraction(userID string, record InteractionRecord) {
 	g.userMu.Lock()

src/semantic-router/pkg/selection/elo.go

@@ -478,13 +478,3 @@ func (h *HybridSelector) InitializeFromConfig(modelConfig map[string]config.Mode
 		"model_count": len(modelConfig),
 	})
 }
-
-// Tier returns the production readiness tier
-func (h *HybridSelector) Tier() AlgorithmTier {
-	return TierSupported
-}
-
-// ExternalDependencies returns external dependencies (none for hybrid)
-func (h *HybridSelector) ExternalDependencies() []Dependency {
-	return []Dependency{}
-}

src/semantic-router/pkg/selection/gmtrouter.go

@@ -228,13 +228,3 @@ func (s *LatencyAwareSelector) UpdateFeedback(ctx context.Context, feedback *Fee
 	_ = feedback
 	return nil
 }
-
-// Tier returns the production readiness tier
-func (l *LatencyAwareSelector) Tier() AlgorithmTier {
-	return TierSupported
-}
-
-// ExternalDependencies returns external dependencies (none for latency-aware)
-func (l *LatencyAwareSelector) ExternalDependencies() []Dependency {
-	return []Dependency{}
-}