feat: Add tracing to profile codex-tui launch performance #217
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Add optional startup profiling instrumentation using tracing-flame. When enabled via the `startup-profiling` feature flag, emits folded stack format to $NORI_HOME/log/startup-profile.folded for flamegraph visualization. Key milestones tracked: - config_loaded: Configuration file parsing complete - tracing_initialized: Tracing subscriber setup complete - terminal_initialized: Terminal and ratatui setup complete - chat_interactive: Chat widget ready for user input (TTI) - session_header_visible: Model/session header displayed Usage: cargo build -p codex-tui --features startup-profiling inferno-flamegraph < startup-profile.folded > flamegraph.svg
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Add optional startup profiling instrumentation using tracing-flame. When enabled via the
startup-profilingfeature flag, emits folded stack format to $NORI_HOME/log/startup-profile.folded for flamegraph visualization.Key milestones tracked:
Usage:
cargo build -p codex-tui --features startup-profiling inferno-flamegraph < startup-profile.folded > flamegraph.svg