feat(agent): audio config context propagation in tool callbacks

Add audio config context helpers in pipeline callbacks. Propagate voice/model
selections through agent loop resolver for tool invocation.

internal/agent/loop_pipeline_tool_callbacks.go

@@ -35,6 +35,15 @@ func (l *Loop) makeExecuteToolCall(req *RunRequest, bridgeRS *runState) func(ctx
 		toolStart := time.Now().UTC()
 		toolSpanID := l.emitToolSpanStart(ctx, toolStart, tc.Name, tc.ID, string(argsJSON))
 
+		// Inject agent audio snapshot so TTS tool (and any future audio consumers)
+		// can read agent-level voice/model config without an extra DB lookup.
+		if l.agentUUID != uuid.Nil {
+			ctx = store.WithAgentAudio(ctx, store.AgentAudioSnapshot{
+				AgentID:     l.agentUUID,
+				OtherConfig: append([]byte(nil), l.agentOtherConfig...), // defensive copy at dispatch
+			})
+		}
+
 		result := l.tools.ExecuteWithContext(ctx, registryName, tc.Arguments,
 			req.Channel, req.ChatID, req.PeerKind, req.SessionKey, nil)
 		toolDuration := time.Since(toolStart)
@@ -84,6 +93,14 @@ func (l *Loop) makeExecuteToolRaw(req *RunRequest) func(ctx context.Context, tc
 		start := time.Now().UTC()
 		spanID := l.emitToolSpanStart(ctx, start, tc.Name, tc.ID, string(argsJSON))
 
+		// Inject agent audio snapshot (parallel path — same as sequential makeExecuteToolCall).
+		if l.agentUUID != uuid.Nil {
+			ctx = store.WithAgentAudio(ctx, store.AgentAudioSnapshot{
+				AgentID:     l.agentUUID,
+				OtherConfig: append([]byte(nil), l.agentOtherConfig...), // defensive copy at dispatch
+			})
+		}
+
 		result := l.tools.ExecuteWithContext(ctx, registryName, tc.Arguments,
 			req.Channel, req.ChatID, req.PeerKind, req.SessionKey, nil)
 		dur := time.Since(start)

internal/agent/loop_types.go

@@ -2,6 +2,7 @@ package agent
 
 import (
 	"context"
+	"encoding/json"
 	"sync"
 	"sync/atomic"
 
@@ -78,8 +79,11 @@ type Loop struct {
 	// agentUUID is the canonical DB primary key. Use for SQL WHERE/JOIN,
 	// DomainEvent.AgentID, OTel span attributes, and context propagation via
 	// store.WithAgentID. See docs/agent-identity-conventions.md.
-	agentUUID uuid.UUID
-	tenantID  uuid.UUID // agent's owning tenant
+	agentUUID        uuid.UUID
+	tenantID         uuid.UUID // agent's owning tenant
+	// agentOtherConfig is a defensive byte copy of agents.other_config JSONB.
+	// Copied once at Loop construction; used to build AgentAudioSnapshot at tool dispatch.
+	agentOtherConfig json.RawMessage
 	agentType        string    // "open" or "predefined"
 	defaultTimezone  string    // system default timezone for bootstrap pre-fill
 	provider         providers.Provider
@@ -319,9 +323,10 @@ type LoopConfig struct {
 	ShellDenyGroups map[string]bool
 
 	// Agent UUID + tenant for context propagation to tools
-	AgentUUID   uuid.UUID
-	TenantID    uuid.UUID // agent's owning tenant — injected into execution context
-	AgentType   string    // "open" or "predefined"
+	AgentUUID        uuid.UUID
+	TenantID         uuid.UUID        // agent's owning tenant — injected into execution context
+	AgentOtherConfig json.RawMessage  // raw other_config JSONB — copied defensively in NewLoop
+	AgentType        string           // "open" or "predefined"
 	DisplayName string    // human-readable agent display name (for runtime section)
 	IsTeamLead bool      // agent leads a team (from resolver detection)
 
@@ -449,6 +454,7 @@ func NewLoop(cfg LoopConfig) *Loop {
 		displayName:            cfg.DisplayName,
 		agentUUID:              cfg.AgentUUID,
 		tenantID:               cfg.TenantID,
+		agentOtherConfig:       append([]byte(nil), cfg.AgentOtherConfig...), // defensive copy
 		agentType:              cfg.AgentType,
 		provider:               cfg.Provider,
 		model:                  cfg.Model,

internal/agent/resolver.go

@@ -451,6 +451,7 @@ func NewManagedResolver(deps ResolverDeps) ResolverFunc {
 			DisplayName:            ag.DisplayName,
 			AgentUUID:              ag.ID,
 			TenantID:               ag.TenantID,
+			AgentOtherConfig:       ag.OtherConfig,
 			AgentType:              ag.AgentType,
 			IsTeamLead:             isTeamLead,
 			AutoInjector:          deps.AutoInjector,