feat(auth): include client identifier in email OTP request and set User-Agent header

Author: tobimadehin

internal/cli/client/auth.go

@@ -4,12 +4,14 @@ import (
 	"context"
 	"fmt"
 	"net/http"
+	"net/url"
 )
 
 // RequestEmailOTP sends an OTP to the given email address.
 // Corresponds to POST /v1/auth/login/email.
 func (c *Client) RequestEmailOTP(ctx context.Context, email string) error {
-	resp, err := c.do(ctx, http.MethodPost, "/auth/login/email", nil, LoginEmailRequest{Email: email})
+	q := url.Values{"client": {"cli"}}
+	resp, err := c.do(ctx, http.MethodPost, "/auth/login/email", q, LoginEmailRequest{Email: email})
 	if err != nil {
 		return err
 	}

internal/cli/client/client.go

@@ -12,6 +12,7 @@ import (
 	"strings"
 
 	"github.com/dployr-io/dployr/internal/cli/config"
+	"github.com/dployr-io/dployr/pkg/version"
 )
 
 // EnvToken is the environment variable checked before config for CI usage.
@@ -68,6 +69,7 @@ func (c *Client) do(ctx context.Context, method, path string, query url.Values,
 		req.Header.Set("Content-Type", "application/json")
 	}
 	req.Header.Set("Accept", "application/json")
+	req.Header.Set("User-Agent", "dployr-cli/"+version.Version)
 
 	c.setAuth(req)