• Internal cleanup. Leaner App struct and event loop
• App state grouped into sub-structs: PingState, VaultState, UpdateState, TagState (#25)
• Event loop arms extracted from run_tui (1300 lines) into handler/event_loop.rs
• CLI subcommand handlers extracted from main() into cli.rs
• SshContext struct eliminates repeated function arguments across remote operations
• SnippetEvent bridge thread removed. Snippets send events directly to the main loop
• TUI smoke test: automated tmux-based test navigates all 22 screens in demo mode
• Fixed 6 flaky test races (hardcoded temp paths and global state interference)
• Fixed 9 rustdoc warnings (unclosed HTML tags and bare URLs in doc comments)