Add whoami and issues browse commands, refactor output messages

- Add new `auth whoami` command to display authenticated user info
- Add new `issues browse` command for opening issues in browser
- Add GetViewer API method to fetch authenticated user details
- Refactor output messages to use pterm.Print* instead of pterm.Info
  for consistency across auth, config, issues, and repo commands
- Update dependencies (pterm, testify, bubbletea, lipgloss)

Author: vishnu-deepsource

command/auth/auth.go

@@ -7,6 +7,7 @@ import (
 	"github.com/deepsourcelabs/cli/command/auth/logout"
 	"github.com/deepsourcelabs/cli/command/auth/refresh"
 	"github.com/deepsourcelabs/cli/command/auth/status"
+	"github.com/deepsourcelabs/cli/command/auth/whoami"
 )
 
 // Options holds the metadata.
@@ -22,5 +23,6 @@ func NewCmdAuth() *cobra.Command {
 	cmd.AddCommand(logout.NewCmdLogout())
 	cmd.AddCommand(refresh.NewCmdRefresh())
 	cmd.AddCommand(status.NewCmdStatus())
+	cmd.AddCommand(whoami.NewCmdWhoAmI())
 	return cmd
 }

command/auth/logout/logout.go

@@ -53,6 +53,6 @@ func (opts *LogoutOptions) Run() error {
 			return err
 		}
 	}
-	pterm.Info.Println("Logged out from DeepSource (deepsource.io)")
+	pterm.Println("Logged out from DeepSource (deepsource.io)")
 	return nil
 }

command/auth/refresh/refresh.go

@@ -70,6 +70,6 @@ func (opts *RefreshOptions) Run() error {
 		fmt.Println("Error in writing authentication data to a file. Exiting...")
 		return err
 	}
-	pterm.Info.Println("Authentication successfully refreshed.")
+	pterm.Println("Authentication successfully refreshed.")
 	return nil
 }

command/auth/status/status.go

@@ -50,9 +50,9 @@ func (opts *AuthStatusOptions) Run() error {
 
 	// Check if the token has already expired
 	if !cfg.IsExpired() {
-		pterm.Info.Printf("Logged in to DeepSource as %s.\n", cfg.User)
+		pterm.Printf("Logged in to DeepSource as %s.\n", cfg.User)
 	} else {
-		pterm.Info.Println("The authentication has expired. Run \"deepsource auth refresh\" to refresh the credentials.")
+		pterm.Println("The authentication has expired. Run \"deepsource auth refresh\" to refresh the credentials.")
 	}
 	return nil
 }

command/auth/whoami/whoami.go

@@ -0,0 +1,90 @@
+package whoami
+
+import (
+	"context"
+	"fmt"
+	"strings"
+
+	"github.com/MakeNowJust/heredoc"
+	"github.com/deepsourcelabs/cli/config"
+	"github.com/deepsourcelabs/cli/internal/cli/args"
+	"github.com/deepsourcelabs/cli/internal/cli/style"
+	authsvc "github.com/deepsourcelabs/cli/internal/services/auth"
+	"github.com/pterm/pterm"
+	"github.com/spf13/cobra"
+)
+
+type WhoAmIOptions struct{}
+
+// NewCmdWhoAmI shows the authenticated user and accounts.
+func NewCmdWhoAmI() *cobra.Command {
+	doc := heredoc.Docf(`
+		Show the authenticated user and available accounts.
+
+		Use %[1]s to view the current user.
+	`, style.Cyan("deepsource auth whoami"))
+
+	cmd := &cobra.Command{
+		Use:   "whoami",
+		Short: "Show the current user",
+		Long:  doc,
+		Args:  args.NoArgs,
+		RunE: func(cmd *cobra.Command, args []string) error {
+			opts := WhoAmIOptions{}
+			return opts.Run(cmd.Context())
+		},
+	}
+	return cmd
+}
+
+func (opts *WhoAmIOptions) Run(ctx context.Context) error {
+	svc := authsvc.NewService(config.DefaultManager())
+	cfg, err := svc.LoadConfig()
+	if err != nil {
+		return fmt.Errorf("Error while reading DeepSource CLI config : %v", err)
+	}
+	if err := cfg.VerifyAuthentication(); err != nil {
+		return err
+	}
+
+	user, err := svc.GetViewer(ctx, cfg)
+	if err != nil {
+		return err
+	}
+
+	fullName := strings.TrimSpace(strings.Join([]string{user.FirstName, user.LastName}, " "))
+	if fullName == "" {
+		fullName = "-"
+	}
+
+	pterm.DefaultSection.Println("User")
+	userSummary := [][]string{
+		{"Name", fullName},
+		{"Email", user.Email},
+		{"ID", user.ID},
+	}
+	pterm.DefaultTable.WithData(userSummary).WithBoxed(false).Render()
+
+	if len(user.Accounts) == 0 {
+		pterm.Println("Accounts: none")
+		return nil
+	}
+
+	pterm.Println("")
+	pterm.DefaultSection.Println("Accounts")
+	accountsTable := [][]string{{"Account", "Type", "VCS", "ID"}}
+	for _, account := range user.Accounts {
+		label := strings.TrimSpace(account.Login)
+		if label == "" {
+			label = "-"
+		}
+		accountsTable = append(accountsTable, []string{
+			label,
+			account.Type,
+			account.VCSProvider,
+			account.ID,
+		})
+	}
+	pterm.DefaultTable.WithHasHeader(true).WithData(accountsTable).Render()
+	return nil
+}

command/config/validate/validate.go

@@ -43,7 +43,7 @@ func (o *Options) Run() error {
 	}
 
 	// Just an info
-	pterm.Info.Println("DeepSource config (.deepsource.toml) is mostly present in the root directory of the project.")
+	pterm.Println("DeepSource config (.deepsource.toml) is mostly present in the root directory of the project.")
 	fmt.Println()
 
 	// Extract the path of DeepSource config