- Add _get_config_dir() and _get_progress_dir() helpers that return
%APPDATA%/skill-seekers and %LOCALAPPDATA%/skill-seekers/progress on
Windows instead of Unix-only ~/.config and ~/.local/share paths
- Recompute paths at instance creation in __init__ so they are always
evaluated at runtime, not at class definition time
- Guard all chmod() calls with sys.platform != "win32" — chmod with
Unix stat flags is a no-op on Windows which caused config to appear
saved but be unreadable/unfindable on subsequent runs
- Fix should_show_welcome() and mark_welcome_shown() to use instance
config_dir instead of stale class-level WELCOME_FLAG constant
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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