Clean up dead Go code in handlers, pages, and stores

- Remove "chat" from surface disable guard (only admin needs it)
- Remove "chat" from IsSurfaceEnabled always-on check
- Remove unused fmt.Sprintf references in team stores
- Update stale comments referencing personas and chat surfaces

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

server/handlers/packages.go

@@ -101,13 +101,13 @@ func (h *PackageHandler) EnablePackage(c *gin.Context) {
 	c.JSON(http.StatusOK, gin.H{"id": id, "enabled": true})
 }
 
-// DisablePackage disables a package. Chat and Admin cannot be disabled.
+// DisablePackage disables a package. Admin cannot be disabled.
 // PUT /api/v1/admin/packages/:id/disable
 // PUT /api/v1/admin/surfaces/:id/disable (alias)
 func (h *PackageHandler) DisablePackage(c *gin.Context) {
 	id := c.Param("id")
 
-	if id == "chat" || id == "admin" {
+	if id == "admin" {
 		c.JSON(http.StatusBadRequest, gin.H{"error": id + " cannot be disabled"})
 		return
 	}

server/handlers/workflows.go

@@ -285,7 +285,7 @@ func (h *WorkflowHandler) Publish(c *gin.Context) {
 		stages = []models.WorkflowStage{}
 	}
 
-	// Snapshot includes persona tool grants at publish time (frozen for running instances)
+	// Snapshot stages at publish time (frozen for running instances)
 	type stageSnapshot struct {
 		models.WorkflowStage
 		ToolGrants []string `json:"tool_grants,omitempty"`

server/pages/pages_surfaces.go

@@ -48,11 +48,10 @@ func (e *Engine) SeedSurfaces() {
 }
 
 // IsSurfaceEnabled checks if a surface is enabled in the registry.
-// Chat and Admin are always enabled (system-critical).
+// Admin is always enabled (system-critical).
 // Returns true if the surface is not found (fail-open for backward compat).
 func (e *Engine) IsSurfaceEnabled(surfaceID string) bool {
-	// Chat and Admin cannot be disabled — they're system-critical
-	if surfaceID == "chat" || surfaceID == "admin" {
+	if surfaceID == "admin" {
 		return true
 	}
 	if e.stores.Packages == nil {

server/store/postgres/team.go

@@ -4,7 +4,6 @@ import (
 	"context"
 	"database/sql"
 	"encoding/json"
-	"fmt"
 
 	"switchboard-core/models"
 )
@@ -224,8 +223,6 @@ func (s *TeamStore) IsMember(ctx context.Context, teamID, userID string) (bool,
 	return exists, err
 }
 
-// unused but keeping for reference
-var _ = fmt.Sprintf
 
 // ── CS1 additions (v0.29.0) ─────────────────────────────────────────────
 

server/store/sqlite/team.go

@@ -4,7 +4,6 @@ import (
 	"context"
 	"database/sql"
 	"encoding/json"
-	"fmt"
 	"time"
 
 	"switchboard-core/models"
@@ -231,8 +230,6 @@ func (s *TeamStore) IsMember(ctx context.Context, teamID, userID string) (bool,
 	return exists, err
 }
 
-// unused but keeping for reference
-var _ = fmt.Sprintf
 
 // ── CS1 additions (v0.29.0) ─────────────────────────────────────────────