smcli env: emit URI/USERNAME/PASSWORD for consumers; pin v5

convert of login items keeps original env names in fields; env now also
exposes the login triple so sourced consumers can map to legacy names.
Ticket: https://projects.knownelement.com/issues/832

cli/cmd/smcli/main.go

@@ -251,6 +251,15 @@ func cmdEnv(name string) error {
 		v := strings.ReplaceAll(f.Value, "'", "'\\''")
 		fmt.Printf("export %s='%s'\n", f.Name, v)
 	}
+	if len(pc.URIs) > 0 {
+		fmt.Printf("export URI='%s'\n", pc.URIs[0])
+	}
+	if pc.Login.Username != "" {
+		fmt.Printf("export USERNAME='%s'\n", pc.Login.Username)
+	}
+	if pc.Login.Password != "" {
+		fmt.Printf("export PASSWORD='%s'\n", pc.Login.Password)
+	}
 	return nil
 }
 
@@ -537,3 +546,5 @@ func cmdConvert(name string) error {
 	fmt.Printf("converted: %s (user=%v pass=%v uris=%d fields=%d)\n", name, username != "", password != "", len(uris), len(rest))
 	return nil
 }
+
+func urisOf(pc *PlainCipher) []string { return pc.URIs }

cli/cmd/smcli/model.go

@@ -90,7 +90,8 @@ type PlainCipher struct {
 		Username string `json:"username"`
 		Password string `json:"password"`
 	} `json:"login"`
-	FolderID string `json:"folderId"`
+	FolderID string   `json:"folderId"`
+	URIs     []string `json:"uris"`
 }
 
 // DecryptCipher converts a raw sync cipher into PlainCipher.
@@ -132,6 +133,18 @@ func DecryptCipher(userKey []byte, raw []byte) (*PlainCipher, error) {
 		if cr.Login.Password != nil {
 			pc.Login.Password, _ = decStr(userKey, ck, cr.Login.Password)
 		}
+		for _, u := range cr.Login.URIs {
+			var um map[string]any
+			um, _ = u.(map[string]any)
+			if um != nil {
+				if us, ok := um["uri"].(string); ok {
+					v, err := decStr(userKey, ck, &us)
+					if err == nil {
+						pc.URIs = append(pc.URIs, v)
+					}
+				}
+			}
+		}
 	}
 	return pc, nil
 }