README changes:
- Add go install github.com/...@latest as primary install method
- Add git clone instructions as alternative
- Add PATH setup instructions for bash/zsh and fish shells
- Fix cache database filename (sessions.db -> metrics_v2.db)
CLAUDE.md:
- Fix cache database filename to match actual implementation
New users on fresh Go installations often miss that ~/go/bin needs
to be in PATH. This was causing "command not found" errors after
successful installation.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Comprehensive project README covering installation, quick start,
full CLI command table with global flags and examples, TUI dashboard
keybindings and tab descriptions, theme options, configuration format
(TOML + env vars), session key setup instructions, caching behavior,
development commands (make targets), and package architecture diagram.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
