Implements comprehensive token management with intelligent priority resolution.
Token sources (highest to lowest priority): environment variable, settings file,
interactive prompt. Changes include:
- Updated home directory from ~/.happy to ~/.config/hapi (env var: HAPI_HOME_DIR)
- Added cliApiToken field to Settings interface for persistent storage
- Made cliApiToken mutable in Configuration class (private field with getter/setter)
- Created ui/tokenInit.ts module for token initialization with fallback prompt
- Enhanced auth command: login (interactive input), logout (clear token), status (show source)
- Updated doctor command to correctly identify token source and mask saved token in output
- Token initialization called early in startup flow to ensure availability before API use
weishu