sequenceDiagram
    participant User
    participant CLI as CLI (root.go)
    participant Cmd as issue_select.go
    participant Config as config.go
    participant Client as jira/client.go
    participant TUI as tui/selector.go
    participant State as state.go
    participant Branch as branch/generator.go

    User->>CLI: jcli issue select
    CLI->>Cmd: executeIssueSelect(args)
    Cmd->>Config: Load()
    Config-->>Cmd: config
    Cmd->>State: Load()
    State-->>Cmd: state
    alt Direct selection by key
        Cmd->>Client: GetIssue(key)
        Client-->>Cmd: issue
    else Interactive selection
        Cmd->>Client: SearchIssues(project, status)
        Client-->>Cmd: issues[]
        Cmd->>TUI: SelectIssue(issues)
        TUI-->>Cmd: selected issue
    end
    Cmd->>State: SetCurrentIssue(key, summary)
    Cmd->>State: Save()
    State-->>Cmd: saved
    Cmd-->>User: issue selected confirmation

    User->>CLI: jcli issue branch
    CLI->>Cmd: executeIssueBranch(args)
    Cmd->>State: Load()
    State-->>Cmd: state with current issue
    Cmd->>Branch: Generate(key, summary)
    Branch-->>Cmd: branch name
    Cmd-->>User: branch-name-output