Simplify codebase per audit of 8b89f14

internal/agents/bash.go

@@ -41,19 +41,14 @@ func (m *Manager) bashTool(l *live) mcp.Tool {
 			},
 			"required": ["command"]
 		}`),
-		Handler: func(ctx context.Context, raw json.RawMessage) (string, error) {
-			return m.bash(ctx, l, raw)
-		},
+		Handler: mcp.Typed(func(ctx context.Context, args bashArgs) (string, error) {
+			return m.bash(ctx, l, args)
+		}),
 	}
 }
 
-func (m *Manager) bash(ctx context.Context, l *live, raw json.RawMessage) (string, error) {
-	args := bashArgs{}
-	err := json.Unmarshal(raw, &args)
-	if err != nil {
-		return "", fmt.Errorf("malformed bash call: %w", err)
-	}
-	err = args.check()
+func (m *Manager) bash(ctx context.Context, l *live, args bashArgs) (string, error) {
+	err := args.check()
 	if err != nil {
 		return "", err
 	}